diff --git a/README.md b/README.md
index c728f6a777ea0ac2c0b04bb7ab246a75434301ed..fcec08725cc8cbc1fb8e8fecb13ea00ac7dbca4b 100644
--- a/README.md
+++ b/README.md
@@ -17,27 +17,38 @@
 
 #### 使用说明
 
-1.  直接拷贝工具类代码嵌入自己项目即可
-2.  目前已完成一部分，经测试可以使用
-    - excel读取导出工具
-    - 文件读取写入工具
-    - Http连接工具（两个）
-    - xml解析工具
-    - 对象反射工具
-
-#### 参与贡献
-
-1.  Fork 本仓库
-2.  新建 Feat_xxx 分支
-3.  提交代码
-4.  新建 Pull Request
-
-
-#### 码云特技
-
-1.  使用 Readme\_XXX.md 来支持不同的语言，例如 Readme\_en.md, Readme\_zh.md
-2.  码云官方博客 [blog.gitee.com](https://blog.gitee.com)
-3.  你可以 [https://gitee.com/explore](https://gitee.com/explore) 这个地址来了解码云上的优秀开源项目
-4.  [GVP](https://gitee.com/gvp) 全称是码云最有价值开源项目，是码云综合评定出的优秀开源项目
-5.  码云官方提供的使用手册 [https://gitee.com/help](https://gitee.com/help)
-6.  码云封面人物是一档用来展示码云会员风采的栏目 [https://gitee.com/gitee-stars/](https://gitee.com/gitee-stars/)
+1. 直接拷贝工具类代码嵌入自己项目即可
+2. 目前已完成一部分，经测试可以使用
+   1. util
+      1. Excel导出工具（ExcelExportUtil）
+      2. EXcel导入工具（ExcelImportUtil）
+      3. 文件读取工具（FileReadUtil）
+      4. 文件写入工具（FileWriteUtil）
+      5. Http(Https)连接工具（HttpConnectionUtil、HttpUrlConnectionUtil）
+      6. Xml解析工具（XmlParseUtil）
+      7. 反射工具（InvokeUtil）
+      8. 省份城市工具（ProvinceCityUtil）
+   2. pdfutil
+      1. 多个pdf合成工具（MutilPdfToOnePdfUtil）
+      2. pdf转图片工具（PdfToPicUtil）
+      3. 图片转pdf工具，多图片转pdf工具（PicToPdfUtil）
+3. 扩展工具，已完成可以直接使用
+   1. 排序算法
+      1. 冒泡排序（BubbleSort）
+      2. 选择排序（SelectionSort）
+      3. 插入排序（InsertionSort）
+      4. 计数排序（CountingSort）
+      5. 归并排序（MergeSort）
+      6. 希尔排序（ShellSort）
+      7. 堆排序（HeapSort）
+      8. 基数排序（RadixSort）
+      9. 桶排序（BucketSort）
+      10. 快速排序（QuickSort）
+   2. 树结构
+      1. AVL树实现算法1（AVLTree1）
+      2. 红黑树实现算法2（RBTree2）
+   3. io模型
+      1. NIO拷贝（Stream）
+      2. BIO拷贝（Channel） 
+      3. NIO读取（Test）（NioRead）
+      4. NIO写入（Test）（NioWrite）
diff --git a/src/main/java/com/lin/codesnippet/ThreadPoolSnippet.java b/src/main/java/com/lin/codesnippet/ThreadPoolSnippet.java
new file mode 100644
index 0000000000000000000000000000000000000000..5fd5e16980019a906f2115a2e736bbee116c1036
--- /dev/null
+++ b/src/main/java/com/lin/codesnippet/ThreadPoolSnippet.java
@@ -0,0 +1,129 @@
+package com.lin.codesnippet;
+
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * 四种线程池模板
+ * @author 九分石人
+ */
+public class ThreadPoolSnippet {
+
+    private static final Integer threadNum = 5;
+
+    /**
+     * 缓存线程池
+     */
+    public void newCachedThreadPool() {
+        ExecutorService executorService = Executors.newCachedThreadPool();
+
+        for (int i = 0; i < threadNum; i++) {
+            final int index = i;
+            executorService.execute(() -> {
+                try {
+                    SimpleDateFormat sdf = new SimpleDateFormat(
+                            "HH:mm:ss");
+                    System.out.println("运行时间: " +
+                            sdf.format(new Date()) + " " + index + " " + Thread.currentThread().getName());
+                    Thread.sleep(2000);
+                } catch (InterruptedException e) {
+                    e.printStackTrace();
+                }
+            });
+        }
+        executorService.shutdown();
+    }
+
+    /**
+     * 单线程线程池
+     */
+    public void newSingleThreadExecutor() {
+        ExecutorService executorService = Executors.newSingleThreadExecutor();
+        execute(executorService);
+        executorService.shutdown();
+    }
+
+    /**
+     * 定长线程池
+     */
+    public void newFixedThreadPool() {
+        ExecutorService executorService = Executors.newFixedThreadPool(3);
+        execute(executorService);
+    }
+
+    private void execute(ExecutorService executorService) {
+        for (int i = 0; i < threadNum; i++) {
+            final int index = i;
+            executorService.execute(() -> {
+                try {
+                    SimpleDateFormat sdf = new SimpleDateFormat(
+                            "HH:mm:ss");
+                    System.out.println("运行时间: " +
+                            sdf.format(new Date()) + " " + index + " " + Thread.currentThread().getName());
+                    Thread.sleep(2000);
+                } catch (InterruptedException e) {
+                    e.printStackTrace();
+                }
+            });
+        }
+    }
+
+    /**
+     * 定时执行的线程池
+     */
+    public void newScheduledThreadPool() {
+        ScheduledExecutorService executorService = Executors.newScheduledThreadPool(3);
+        SimpleDateFormat sdf = new SimpleDateFormat(
+                "HH:mm:ss");
+        for (int i = 0; i < threadNum; i++) {
+            final int index = i;
+            System.out.println("提交时间: " + sdf.format(new Date()));
+            executorService.schedule(() -> {
+                try {
+
+                    System.out.println("运行时间: " +
+                            sdf.format(new Date()) + " " + index + " " + Thread.currentThread().getName());
+                    Thread.sleep(2000);
+                } catch (InterruptedException e) {
+                    e.printStackTrace();
+                }
+            }, 3, TimeUnit.SECONDS);
+
+        }
+    }
+
+    /**
+     * 周期执行的线程池
+     *
+     * @throws InterruptedException
+     */
+    public void newScheduledThreadPool2() throws InterruptedException {
+        ScheduledExecutorService executorService = Executors.newScheduledThreadPool(3);
+        SimpleDateFormat sdf = new SimpleDateFormat(
+                "HH:mm:ss");
+//        for (int i = 0; i < threadNum; i++) {
+        final int index = 1;
+        System.out.println("提交时间: " + sdf.format(new Date()));
+        executorService.scheduleAtFixedRate(() -> {
+            try {
+
+                System.out.println("运行时间: " +
+                        sdf.format(new Date()) + " " + index + " " + Thread.currentThread().getName());
+                Thread.sleep(2000);
+            } catch (InterruptedException e) {
+                e.printStackTrace();
+            }
+        }, 1, 3, TimeUnit.SECONDS);
+        //主线程等待10秒钟后关闭
+        Thread.sleep(10000);
+//        }
+
+        executorService.shutdown();
+    }
+
+
+}
diff --git a/src/main/java/com/lin/codesnippet/io/aio/Asynchronous.java b/src/main/java/com/lin/codesnippet/io/aio/Asynchronous.java
new file mode 100644
index 0000000000000000000000000000000000000000..7bf6c2a5f5c2b9c1f4be8d12dd8b452cc9894d60
--- /dev/null
+++ b/src/main/java/com/lin/codesnippet/io/aio/Asynchronous.java
@@ -0,0 +1,33 @@
+package com.lin.codesnippet.io.aio;
+
+import java.io.*;
+import java.nio.ByteBuffer;
+import java.nio.channels.AsynchronousFileChannel;
+import java.nio.file.OpenOption;
+import java.nio.file.StandardOpenOption;
+import java.util.concurrent.Future;
+
+/**
+ * @author 九分石人
+ */
+public class Asynchronous {
+
+
+    public static void main(String[] args) throws IOException {
+        File file = new File("D:\\util\\BingWallpaper.jpg");
+        OpenOption options = StandardOpenOption.READ;
+        AsynchronousFileChannel asynchronousFileChannel = AsynchronousFileChannel.open(file.toPath(), options);
+        ByteBuffer buffer = ByteBuffer.allocate(1024);
+        Future<Integer> read = asynchronousFileChannel.read(buffer, 1);
+
+        try (InputStream inputStream = new FileInputStream(file)) {
+            InputStreamReader inputStreamReader = new InputStreamReader(inputStream);
+            BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
+            StringReader stringReader = new StringReader("1");
+        }
+
+
+    }
+
+
+}
diff --git a/src/main/java/com/lin/io/bio/Stream.java b/src/main/java/com/lin/codesnippet/io/bio/Stream.java
similarity index 84%
rename from src/main/java/com/lin/io/bio/Stream.java
rename to src/main/java/com/lin/codesnippet/io/bio/Stream.java
index 3217363a3b7c2f65f170585b26399bfd064b391e..3e84a15a20c1a868ca78c73886d8817af6202596 100644
--- a/src/main/java/com/lin/io/bio/Stream.java
+++ b/src/main/java/com/lin/codesnippet/io/bio/Stream.java
@@ -1,9 +1,6 @@
-package com.lin.io.bio;
+package com.lin.codesnippet.io.bio;
 
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
-import java.io.IOException;
+import java.io.*;
 
 /**
  * @author 九分石人
diff --git a/src/main/java/com/lin/io/nio/Channel.java b/src/main/java/com/lin/codesnippet/io/nio/Channel.java
similarity index 86%
rename from src/main/java/com/lin/io/nio/Channel.java
rename to src/main/java/com/lin/codesnippet/io/nio/Channel.java
index a8d0875c13f86efe1643166ee8a8ca107e7e211a..5d2876178fda815343b0356caf25242706e6d469 100644
--- a/src/main/java/com/lin/io/nio/Channel.java
+++ b/src/main/java/com/lin/codesnippet/io/nio/Channel.java
@@ -1,9 +1,6 @@
-package com.lin.io.nio;
+package com.lin.codesnippet.io.nio;
 
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
-import java.io.IOException;
+import java.io.*;
 import java.nio.ByteBuffer;
 import java.nio.channels.FileChannel;
 
diff --git a/src/main/java/com/lin/sort/BubbleSort.java b/src/main/java/com/lin/codesnippet/sort/BubbleSort.java
similarity index 92%
rename from src/main/java/com/lin/sort/BubbleSort.java
rename to src/main/java/com/lin/codesnippet/sort/BubbleSort.java
index 684f15b2f67f63ac6e4480e1965fa4f780f028a8..79bc4fd064daf32216e3783b346718d3e779cc99 100644
--- a/src/main/java/com/lin/sort/BubbleSort.java
+++ b/src/main/java/com/lin/codesnippet/sort/BubbleSort.java
@@ -1,7 +1,7 @@
-package com.lin.sort;
+package com.lin.codesnippet.sort;
 
-import com.lin.enums.SortStatusCode;
-import com.lin.sort.util.SortUtil;
+import com.lin.enums.codesnippet.SortStatusCode;
+import com.lin.codesnippet.sort.util.SortUtil;
 
 /**
  * 冒泡排序
diff --git a/src/main/java/com/lin/sort/BucketSort.java b/src/main/java/com/lin/codesnippet/sort/BucketSort.java
similarity index 96%
rename from src/main/java/com/lin/sort/BucketSort.java
rename to src/main/java/com/lin/codesnippet/sort/BucketSort.java
index c966feb57986a2d2d7f8de6e7612a124cb5a95b2..b5bffc8235f395bb538671b0b55f63e60f1e424d 100644
--- a/src/main/java/com/lin/sort/BucketSort.java
+++ b/src/main/java/com/lin/codesnippet/sort/BucketSort.java
@@ -1,6 +1,6 @@
-package com.lin.sort;
+package com.lin.codesnippet.sort;
 
-import com.lin.enums.SortStatusCode;
+import com.lin.enums.codesnippet.SortStatusCode;
 
 import java.util.Arrays;
 
diff --git a/src/main/java/com/lin/sort/CountingSort.java b/src/main/java/com/lin/codesnippet/sort/CountingSort.java
similarity index 97%
rename from src/main/java/com/lin/sort/CountingSort.java
rename to src/main/java/com/lin/codesnippet/sort/CountingSort.java
index 9cf65895a1ee088215a8bccee3b45a67b9b0cc49..de09eade0516b0f4c5e5d4f57e43b820e74e688c 100644
--- a/src/main/java/com/lin/sort/CountingSort.java
+++ b/src/main/java/com/lin/codesnippet/sort/CountingSort.java
@@ -1,4 +1,4 @@
-package com.lin.sort;
+package com.lin.codesnippet.sort;
 
 import java.util.Arrays;
 
diff --git a/src/main/java/com/lin/sort/HeapSort.java b/src/main/java/com/lin/codesnippet/sort/HeapSort.java
similarity index 95%
rename from src/main/java/com/lin/sort/HeapSort.java
rename to src/main/java/com/lin/codesnippet/sort/HeapSort.java
index caa6de89a60a515caea15c45b74c2bf2d8b7df25..6c905d0ca8fc18f6dad00a8681786173cb89b800 100644
--- a/src/main/java/com/lin/sort/HeapSort.java
+++ b/src/main/java/com/lin/codesnippet/sort/HeapSort.java
@@ -1,7 +1,7 @@
-package com.lin.sort;
+package com.lin.codesnippet.sort;
 
-import com.lin.enums.SortStatusCode;
-import com.lin.sort.util.SortUtil;
+import com.lin.enums.codesnippet.SortStatusCode;
+import com.lin.codesnippet.sort.util.SortUtil;
 
 /**
  * 堆排序
diff --git a/src/main/java/com/lin/sort/InsertionSort.java b/src/main/java/com/lin/codesnippet/sort/InsertionSort.java
similarity index 93%
rename from src/main/java/com/lin/sort/InsertionSort.java
rename to src/main/java/com/lin/codesnippet/sort/InsertionSort.java
index 78767d5f8abdacd4978f068763ad8ac359b08625..ee8a6a16938c30bf844cef41c548bf43bcdca48a 100644
--- a/src/main/java/com/lin/sort/InsertionSort.java
+++ b/src/main/java/com/lin/codesnippet/sort/InsertionSort.java
@@ -1,7 +1,7 @@
-package com.lin.sort;
+package com.lin.codesnippet.sort;
 
-import com.lin.enums.SortStatusCode;
-import com.lin.sort.util.SortUtil;
+import com.lin.enums.codesnippet.SortStatusCode;
+import com.lin.codesnippet.sort.util.SortUtil;
 
 /**
  * 插入排序
diff --git a/src/main/java/com/lin/sort/MergeSort.java b/src/main/java/com/lin/codesnippet/sort/MergeSort.java
similarity index 95%
rename from src/main/java/com/lin/sort/MergeSort.java
rename to src/main/java/com/lin/codesnippet/sort/MergeSort.java
index 389abc3c3e8da6ca1aa2898888c75969cf773ba3..9fab3e7de2d5e791faac6627f38603b0e279022d 100644
--- a/src/main/java/com/lin/sort/MergeSort.java
+++ b/src/main/java/com/lin/codesnippet/sort/MergeSort.java
@@ -1,7 +1,7 @@
-package com.lin.sort;
+package com.lin.codesnippet.sort;
 
-import com.lin.enums.SortStatusCode;
-import com.lin.sort.util.SortUtil;
+import com.lin.enums.codesnippet.SortStatusCode;
+import com.lin.codesnippet.sort.util.SortUtil;
 
 /**
  * 归并排序
diff --git a/src/main/java/com/lin/sort/QuickSort.java b/src/main/java/com/lin/codesnippet/sort/QuickSort.java
similarity index 94%
rename from src/main/java/com/lin/sort/QuickSort.java
rename to src/main/java/com/lin/codesnippet/sort/QuickSort.java
index 19a1d722acac4cc30226e9332abf0f8820ef8735..f78cf34108ad7efd228213338d1ae49b53690f52 100644
--- a/src/main/java/com/lin/sort/QuickSort.java
+++ b/src/main/java/com/lin/codesnippet/sort/QuickSort.java
@@ -1,7 +1,7 @@
-package com.lin.sort;
+package com.lin.codesnippet.sort;
 
-import com.lin.enums.SortStatusCode;
-import com.lin.sort.util.SortUtil;
+import com.lin.enums.codesnippet.SortStatusCode;
+import com.lin.codesnippet.sort.util.SortUtil;
 
 /**
  * 快速排序
diff --git a/src/main/java/com/lin/sort/RadixSort.java b/src/main/java/com/lin/codesnippet/sort/RadixSort.java
similarity index 98%
rename from src/main/java/com/lin/sort/RadixSort.java
rename to src/main/java/com/lin/codesnippet/sort/RadixSort.java
index 9b4bf181501fca08f3ffcb548656f9b04b3523af..951c2fc2aa77e764f49dfccbc2590991d1cfac48 100644
--- a/src/main/java/com/lin/sort/RadixSort.java
+++ b/src/main/java/com/lin/codesnippet/sort/RadixSort.java
@@ -1,4 +1,4 @@
-package com.lin.sort;
+package com.lin.codesnippet.sort;
 
 import java.util.Arrays;
 
diff --git a/src/main/java/com/lin/sort/SelectionSort.java b/src/main/java/com/lin/codesnippet/sort/SelectionSort.java
similarity index 87%
rename from src/main/java/com/lin/sort/SelectionSort.java
rename to src/main/java/com/lin/codesnippet/sort/SelectionSort.java
index af7ee00f941dbd6644faf7c8fd75ef5a3b34809f..cc48f5008d4da17034a934268801525c577800d3 100644
--- a/src/main/java/com/lin/sort/SelectionSort.java
+++ b/src/main/java/com/lin/codesnippet/sort/SelectionSort.java
@@ -1,7 +1,7 @@
-package com.lin.sort;
+package com.lin.codesnippet.sort;
 
-import com.lin.enums.SortStatusCode;
-import com.lin.sort.util.SortUtil;
+import com.lin.enums.codesnippet.SortStatusCode;
+import com.lin.codesnippet.sort.util.SortUtil;
 
 /**
  * 选择排序
diff --git a/src/main/java/com/lin/sort/ShellSort.java b/src/main/java/com/lin/codesnippet/sort/ShellSort.java
similarity index 89%
rename from src/main/java/com/lin/sort/ShellSort.java
rename to src/main/java/com/lin/codesnippet/sort/ShellSort.java
index 76ffd6ddebe281c2a0827db0fd3bd282317c862b..3b57bd7baabc39827990ccdf3cce8f0ffb05c022 100644
--- a/src/main/java/com/lin/sort/ShellSort.java
+++ b/src/main/java/com/lin/codesnippet/sort/ShellSort.java
@@ -1,7 +1,7 @@
-package com.lin.sort;
+package com.lin.codesnippet.sort;
 
-import com.lin.enums.SortStatusCode;
-import com.lin.sort.util.SortUtil;
+import com.lin.enums.codesnippet.SortStatusCode;
+import com.lin.codesnippet.sort.util.SortUtil;
 
 /**
  * 希尔排序
diff --git a/src/main/java/com/lin/sort/util/SortUtil.java b/src/main/java/com/lin/codesnippet/sort/util/SortUtil.java
similarity index 93%
rename from src/main/java/com/lin/sort/util/SortUtil.java
rename to src/main/java/com/lin/codesnippet/sort/util/SortUtil.java
index e65c31e77af2080b6addab5d369c2a1c16fb1eb1..b1b0b1cde6d340f3f1b332e2412714041881824e 100644
--- a/src/main/java/com/lin/sort/util/SortUtil.java
+++ b/src/main/java/com/lin/codesnippet/sort/util/SortUtil.java
@@ -1,4 +1,4 @@
-package com.lin.sort.util;
+package com.lin.codesnippet.sort.util;
 
 /**
  * 排序工具
diff --git a/src/main/java/com/lin/tree/nome/BSTree.java b/src/main/java/com/lin/codesnippet/treeNome/BSTree.java
similarity index 99%
rename from src/main/java/com/lin/tree/nome/BSTree.java
rename to src/main/java/com/lin/codesnippet/treeNome/BSTree.java
index 16c1646da2116144aa577016d3f07e98677da023..9fc2e387ffe50da37e45cd2bd4bf4d16f99d3d7e 100644
--- a/src/main/java/com/lin/tree/nome/BSTree.java
+++ b/src/main/java/com/lin/codesnippet/treeNome/BSTree.java
@@ -1,4 +1,4 @@
-package com.lin.tree.nome;
+package com.lin.codesnippet.treeNome;
 
 import lombok.Data;
 
diff --git a/src/main/java/com/lin/tree/nome/Tree.java b/src/main/java/com/lin/codesnippet/treeNome/Tree.java
similarity index 99%
rename from src/main/java/com/lin/tree/nome/Tree.java
rename to src/main/java/com/lin/codesnippet/treeNome/Tree.java
index 96b0001866812368e751cdc780e0fb2a52271bf3..624a8b64fb7eb1d3d678ef29dff8e061401c0679 100644
--- a/src/main/java/com/lin/tree/nome/Tree.java
+++ b/src/main/java/com/lin/codesnippet/treeNome/Tree.java
@@ -1,4 +1,4 @@
-package com.lin.tree.nome;
+package com.lin.codesnippet.treeNome;
 
 
 import lombok.Data;
diff --git a/src/main/java/com/lin/tree/nome/avltree/AVLTree1.java b/src/main/java/com/lin/codesnippet/treeNome/avltree/AVLTree1.java
similarity index 99%
rename from src/main/java/com/lin/tree/nome/avltree/AVLTree1.java
rename to src/main/java/com/lin/codesnippet/treeNome/avltree/AVLTree1.java
index 4a13540a9e710f21e2608a16646e8d6d2467387e..101505a1a142ca046b31c0013a21f9fc9fb05d50 100644
--- a/src/main/java/com/lin/tree/nome/avltree/AVLTree1.java
+++ b/src/main/java/com/lin/codesnippet/treeNome/avltree/AVLTree1.java
@@ -1,4 +1,4 @@
-package com.lin.tree.nome.avltree;
+package com.lin.codesnippet.treeNome.avltree;
 
 import java.util.Comparator;
 
diff --git a/src/main/java/com/lin/tree/nome/avltree/AVLTree2.java b/src/main/java/com/lin/codesnippet/treeNome/avltree/AVLTree2.java
similarity index 99%
rename from src/main/java/com/lin/tree/nome/avltree/AVLTree2.java
rename to src/main/java/com/lin/codesnippet/treeNome/avltree/AVLTree2.java
index 4b2cc0e01892029b10a0b05813105dab90a463d2..cb4d867efa08793d0535e11c64448f2558a48453 100644
--- a/src/main/java/com/lin/tree/nome/avltree/AVLTree2.java
+++ b/src/main/java/com/lin/codesnippet/treeNome/avltree/AVLTree2.java
@@ -1,4 +1,4 @@
-package com.lin.tree.nome.avltree;
+package com.lin.codesnippet.treeNome.avltree;
 
 //AVL树的节点类
 class AVLNode<T> {
diff --git a/src/main/java/com/lin/tree/nome/rbtree/RBTree1.java b/src/main/java/com/lin/codesnippet/treeNome/rbtree/RBTree1.java
similarity index 99%
rename from src/main/java/com/lin/tree/nome/rbtree/RBTree1.java
rename to src/main/java/com/lin/codesnippet/treeNome/rbtree/RBTree1.java
index 0905b7162813a08692b0659f6e96e2c95e14d930..c704b30880b38c6c08ddbb8c830084ef540a79c8 100644
--- a/src/main/java/com/lin/tree/nome/rbtree/RBTree1.java
+++ b/src/main/java/com/lin/codesnippet/treeNome/rbtree/RBTree1.java
@@ -1,4 +1,4 @@
-package com.lin.tree.nome.rbtree;
+package com.lin.codesnippet.treeNome.rbtree;
 
 /**
  * 红黑树
diff --git a/src/main/java/com/lin/tree/nome/rbtree/RBTree2.java b/src/main/java/com/lin/codesnippet/treeNome/rbtree/RBTree2.java
similarity index 99%
rename from src/main/java/com/lin/tree/nome/rbtree/RBTree2.java
rename to src/main/java/com/lin/codesnippet/treeNome/rbtree/RBTree2.java
index 8c8d7654a5fa779cbf40548bd2b9832712f451e0..804ea7429f7563add5a7157bb608355134cee99c 100644
--- a/src/main/java/com/lin/tree/nome/rbtree/RBTree2.java
+++ b/src/main/java/com/lin/codesnippet/treeNome/rbtree/RBTree2.java
@@ -1,4 +1,4 @@
-package com.lin.tree.nome.rbtree;
+package com.lin.codesnippet.treeNome.rbtree;
 
 
 public class RBTree2 {
diff --git a/src/main/java/com/lin/enums/SortStatusCode.java b/src/main/java/com/lin/enums/codesnippet/SortStatusCode.java
similarity index 95%
rename from src/main/java/com/lin/enums/SortStatusCode.java
rename to src/main/java/com/lin/enums/codesnippet/SortStatusCode.java
index 13e7f3e9e248c3e1f303d1365298fb3a9c3faf3d..4f44b60e2083d8af23319d9aa1e3506ed6c1a021 100644
--- a/src/main/java/com/lin/enums/SortStatusCode.java
+++ b/src/main/java/com/lin/enums/codesnippet/SortStatusCode.java
@@ -1,4 +1,4 @@
-package com.lin.enums;
+package com.lin.enums.codesnippet;
 
 /**
  * 排序状态吗
diff --git a/src/main/java/com/lin/enums/ResponseStatusCode.java b/src/main/java/com/lin/enums/util/ResponseStatusCode.java
similarity index 95%
rename from src/main/java/com/lin/enums/ResponseStatusCode.java
rename to src/main/java/com/lin/enums/util/ResponseStatusCode.java
index a134685630b7f20be48f8389f2cd74b37936d77f..906bd030e115ac8abeff8b27f54a451bd2de1e7c 100644
--- a/src/main/java/com/lin/enums/ResponseStatusCode.java
+++ b/src/main/java/com/lin/enums/util/ResponseStatusCode.java
@@ -1,4 +1,4 @@
-package com.lin.enums;
+package com.lin.enums.util;
 
 /**
  * http相应响应状态码
diff --git a/src/main/java/com/lin/util/ExcelExportUtil.java b/src/main/java/com/lin/util/ExcelExportUtil.java
index ce330185cd911b5537416bec5f534a03d55da5f0..8f85e2356cf6921762e117377da907e0d4322a1b 100644
--- a/src/main/java/com/lin/util/ExcelExportUtil.java
+++ b/src/main/java/com/lin/util/ExcelExportUtil.java
@@ -129,7 +129,7 @@ public class ExcelExportUtil {
                 Field f = fields[j];
                 f.setAccessible(true);
                 if (f.get(t) != null) {
-                    row.createCell(j).setCellValue((String) f.get(t));
+                    row.createCell(j).setCellValue(f.get(t).toString());
                 } else {
                     row.createCell(j);
                 }
diff --git a/src/main/java/com/lin/util/HttpConnectionUtil.java b/src/main/java/com/lin/util/HttpConnectionUtil.java
index 5ce1c3506d132adbbd4d33330031b6cc76d01adb..4b439941a8d41d6a496fb57bbaca25a357053d9c 100644
--- a/src/main/java/com/lin/util/HttpConnectionUtil.java
+++ b/src/main/java/com/lin/util/HttpConnectionUtil.java
@@ -1,6 +1,6 @@
 package com.lin.util;
 
-import com.lin.enums.ResponseStatusCode;
+import com.lin.enums.util.ResponseStatusCode;
 import lombok.extern.slf4j.Slf4j;
 
 import java.io.*;
diff --git a/src/main/java/com/lin/util/HttpUrlConnectionUtil.java b/src/main/java/com/lin/util/HttpUrlConnectionUtil.java
index 02aacb9b5dc174c5e3f5eecafcbe45c9809524f2..c33384775ef097383ac4bb76a47307aceae94153 100644
--- a/src/main/java/com/lin/util/HttpUrlConnectionUtil.java
+++ b/src/main/java/com/lin/util/HttpUrlConnectionUtil.java
@@ -1,6 +1,6 @@
 package com.lin.util;
 
-import com.lin.enums.ResponseStatusCode;
+import com.lin.enums.util.ResponseStatusCode;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.commons.io.IOUtils;
 
@@ -9,7 +9,6 @@ import javax.net.ssl.SSLSocketFactory;
 import javax.net.ssl.TrustManager;
 import java.io.DataOutputStream;
 import java.net.HttpURLConnection;
-import java.net.ResponseCache;
 import java.net.URL;
 import java.security.KeyManagementException;
 import java.security.NoSuchAlgorithmException;
diff --git a/src/main/java/com/lin/pdfutil/ExcelToPdfUtil.java b/src/main/java/com/lin/util/pdfutil/ExcelToPdfUtil.java
similarity index 77%
rename from src/main/java/com/lin/pdfutil/ExcelToPdfUtil.java
rename to src/main/java/com/lin/util/pdfutil/ExcelToPdfUtil.java
index b10abc86becb8945cc8296483bce918b881a645a..99ee865bf5485fd2598bbff4c6af51725ef6c685 100644
--- a/src/main/java/com/lin/pdfutil/ExcelToPdfUtil.java
+++ b/src/main/java/com/lin/util/pdfutil/ExcelToPdfUtil.java
@@ -1,4 +1,4 @@
-package com.lin.pdfutil;
+package com.lin.util.pdfutil;
 
 import lombok.extern.slf4j.Slf4j;
 
diff --git a/src/main/java/com/lin/pdfutil/HtmlToPdfUtil.java b/src/main/java/com/lin/util/pdfutil/HtmlToPdfUtil.java
similarity index 68%
rename from src/main/java/com/lin/pdfutil/HtmlToPdfUtil.java
rename to src/main/java/com/lin/util/pdfutil/HtmlToPdfUtil.java
index ca735b4ef8b5471d38234db3a40500c9a1de6adb..2ebcb317fb9ea0144d34893151f6b2a7fd155aae 100644
--- a/src/main/java/com/lin/pdfutil/HtmlToPdfUtil.java
+++ b/src/main/java/com/lin/util/pdfutil/HtmlToPdfUtil.java
@@ -1,4 +1,4 @@
-package com.lin.pdfutil;
+package com.lin.util.pdfutil;
 
 /**
  * @author 九分石人
diff --git a/src/main/java/com/lin/pdfutil/MultiPdfToOnePdfUtil.java b/src/main/java/com/lin/util/pdfutil/MultiPdfToOnePdfUtil.java
similarity index 96%
rename from src/main/java/com/lin/pdfutil/MultiPdfToOnePdfUtil.java
rename to src/main/java/com/lin/util/pdfutil/MultiPdfToOnePdfUtil.java
index e842e47f0fc2040c1b0b9fc272e81ed2e2078a7b..214ba55bc4ee5259f5ee3e4755bcb7473eef0db8 100644
--- a/src/main/java/com/lin/pdfutil/MultiPdfToOnePdfUtil.java
+++ b/src/main/java/com/lin/util/pdfutil/MultiPdfToOnePdfUtil.java
@@ -1,8 +1,7 @@
-package com.lin.pdfutil;
+package com.lin.util.pdfutil;
 
 import com.itextpdf.text.*;
 import com.itextpdf.text.Image;
-import com.itextpdf.text.Rectangle;
 import com.itextpdf.text.pdf.PdfCopy;
 import com.itextpdf.text.pdf.PdfImportedPage;
 import com.itextpdf.text.pdf.PdfReader;
@@ -83,7 +82,7 @@ public class MultiPdfToOnePdfUtil {
 
 
     /**
-     * 多个pdf合一工具
+     * 多个pdf合一工具，pdf大小不一
      *
      * @param bytes 需要合成的pdf数组
      * @return 合成后的pdf
@@ -97,6 +96,7 @@ public class MultiPdfToOnePdfUtil {
         PdfCopy copy = new PdfCopy(document, bos);
         document.open();
         // 取出单个PDF的数据
+        int count = 0;
         for (byte[] bs : bytes) {
             PdfReader reader = new PdfReader(bs);
             int pageTotal = reader.getNumberOfPages();
@@ -107,6 +107,7 @@ public class MultiPdfToOnePdfUtil {
                 copy.addPage(page);
             }
             reader.close();
+            log.info("已完成的pdf ==> {}",++count);
         }
         document.close();
         byte[] pdfs = bos.toByteArray();
diff --git a/src/main/java/com/lin/pdfutil/PPTToPdfUtil.java b/src/main/java/com/lin/util/pdfutil/PPTToPdfUtil.java
similarity index 77%
rename from src/main/java/com/lin/pdfutil/PPTToPdfUtil.java
rename to src/main/java/com/lin/util/pdfutil/PPTToPdfUtil.java
index de3f697c6c66cbd6b62ce3214d6519086c76e98e..7792504b367fdc8b7a4d3b3e568ce1bfbee35cfc 100644
--- a/src/main/java/com/lin/pdfutil/PPTToPdfUtil.java
+++ b/src/main/java/com/lin/util/pdfutil/PPTToPdfUtil.java
@@ -1,4 +1,4 @@
-package com.lin.pdfutil;
+package com.lin.util.pdfutil;
 
 import lombok.extern.slf4j.Slf4j;
 
diff --git a/src/main/java/com/lin/pdfutil/PdfToPicUtil.java b/src/main/java/com/lin/util/pdfutil/PdfToPicUtil.java
similarity index 98%
rename from src/main/java/com/lin/pdfutil/PdfToPicUtil.java
rename to src/main/java/com/lin/util/pdfutil/PdfToPicUtil.java
index 772b98c6ce99a807ee6051abf5968eeb6032b4f6..b738f5310cefbad91bb4e040d69d8b178fdb85ef 100644
--- a/src/main/java/com/lin/pdfutil/PdfToPicUtil.java
+++ b/src/main/java/com/lin/util/pdfutil/PdfToPicUtil.java
@@ -1,4 +1,4 @@
-package com.lin.pdfutil;
+package com.lin.util.pdfutil;
 
 import com.spire.pdf.PdfDocument;
 import lombok.extern.slf4j.Slf4j;
diff --git a/src/main/java/com/lin/pdfutil/PicToPdfUtil.java b/src/main/java/com/lin/util/pdfutil/PicToPdfUtil.java
similarity index 98%
rename from src/main/java/com/lin/pdfutil/PicToPdfUtil.java
rename to src/main/java/com/lin/util/pdfutil/PicToPdfUtil.java
index 9d6969142f0cb07f4e6b5834d3d9d68f2bd00a2f..44c687b7c243c973419f973fadd54c37144cb518 100644
--- a/src/main/java/com/lin/pdfutil/PicToPdfUtil.java
+++ b/src/main/java/com/lin/util/pdfutil/PicToPdfUtil.java
@@ -1,4 +1,4 @@
-package com.lin.pdfutil;
+package com.lin.util.pdfutil;
 
 import com.itextpdf.text.*;
 import com.itextpdf.text.pdf.PdfWriter;
@@ -23,7 +23,7 @@ import java.io.*;
 public class PicToPdfUtil {
 
     /**
-     * 将pdf转换为图片
+     * 将图片转换为pdf，bug
      *
      * @param inputStream 图片输入流
      * @return pdf 输出流
diff --git a/src/main/java/com/lin/pdfutil/WordToPdfUtil.java b/src/main/java/com/lin/util/pdfutil/WordToPdfUtil.java
similarity index 77%
rename from src/main/java/com/lin/pdfutil/WordToPdfUtil.java
rename to src/main/java/com/lin/util/pdfutil/WordToPdfUtil.java
index d260192c385b07ed5cc37f45b7f999108eb792b7..0c3a225d41d1be2dcd80f5d7eedd53ff5cc31ee5 100644
--- a/src/main/java/com/lin/pdfutil/WordToPdfUtil.java
+++ b/src/main/java/com/lin/util/pdfutil/WordToPdfUtil.java
@@ -1,4 +1,4 @@
-package com.lin.pdfutil;
+package com.lin.util.pdfutil;
 
 import lombok.extern.slf4j.Slf4j;
 
diff --git a/src/main/resources/markdown/codesnippet/io.md b/src/main/resources/markdown/codesnippet/io.md
new file mode 100644
index 0000000000000000000000000000000000000000..0e1cf2d9dd5c9c513638ddb215abdd579bab183f
--- /dev/null
+++ b/src/main/resources/markdown/codesnippet/io.md
@@ -0,0 +1,20 @@
+# io
+
+## algorithm
+
+1. NIO拷贝（Stream）
+2. BIO拷贝（Channel）
+
+## test pass
+
+1. NIO读取（NioRead）
+2. NIO写入（NioWrite）
+3. qq_NIO网络通信（qq）
+    1. qq1
+    2. qq2
+
+---
+
+## unfinished
+
+1. AIO拷贝（Asynchronous）
\ No newline at end of file
diff --git a/src/main/resources/markdown/codesnippet/sort.md b/src/main/resources/markdown/codesnippet/sort.md
new file mode 100644
index 0000000000000000000000000000000000000000..294d6494d45dee0f7e382dd7f2d93933ad51e92e
--- /dev/null
+++ b/src/main/resources/markdown/codesnippet/sort.md
@@ -0,0 +1,27 @@
+# sort
+
+## algorithm
+
+1. 冒泡排序（BubbleSort）
+2. 选择排序（SelectionSort）
+3. 插入排序（InsertionSort）
+4. 计数排序（CountingSort）
+5. 归并排序（MergeSort）
+6. 希尔排序（ShellSort）
+7. 堆排序（HeapSort）
+8. 基数排序（RadixSort）
+9. 桶排序（BucketSort）
+10. 快速排序（QuickSort）
+
+## test pass
+
+1. 冒泡排序（BubbleSortTest）
+2. 选择排序（SelectionSortTest）
+3. 插入排序（InsertionSortTest）
+4. 计数排序（CountingSortTest）
+5. 归并排序（MergeSortTest）
+6. 希尔排序（ShellSortTest）
+7. 堆排序（HeapSortTest）
+8. 基数排序（RadixSortTest）
+9. 桶排序（BucketSortTest）
+10. 快速排序（QuickSortTest）
\ No newline at end of file
diff --git a/src/main/resources/markdown/codesnippet/treenome.md b/src/main/resources/markdown/codesnippet/treenome.md
new file mode 100644
index 0000000000000000000000000000000000000000..f36d15883b5fca25f5b8952970692298af89e440
--- /dev/null
+++ b/src/main/resources/markdown/codesnippet/treenome.md
@@ -0,0 +1,24 @@
+# treenome
+
+## algorithm
+
+1. AVL树实现算法1（AVLTree1）
+2. AVL树实现算法2（AVLTree2）
+3. 红黑树实现算法1（RBTree1）
+4. 红黑树实现算法2（RBTree2）
+5. 二叉平衡树实现算法（BSTree）
+6. 普通二叉树6（Tree）
+
+## test pass
+
+1. AVL树算法1测试（AVLTree1Test）
+2. 红黑树算法2测试（RBTree2Test）
+
+---
+
+## untest
+
+1. AVL树实现算法2（AVLTree2）
+2. 红黑树实现算法1（RBTree1）
+3. 二叉平衡树实现算法（BSTree）
+4. 普通二叉树（Tree）
diff --git a/src/main/resources/markdown/util/pdfutil.md b/src/main/resources/markdown/util/pdfutil.md
new file mode 100644
index 0000000000000000000000000000000000000000..1ce1d5814b1617639fc0091f512e486a19482fe9
--- /dev/null
+++ b/src/main/resources/markdown/util/pdfutil.md
@@ -0,0 +1,27 @@
+# pdfutil
+
+## util
+
+1. 图片转pdf工具，多图片转pdf工具（PicToPdfUtil）
+2. pdf转图片工具（PdfToPicUtil）
+3. 多个pdf合成工具（MutilPdfToOnePdfUtil）
+4. Html转Pdf工具（HtmlToPdfUtil）
+5. Word转Pdf工具（WordToPdfUtil）
+6. PPT转Pdf工具（PPTToPdfUtil）
+7. Excel转Pdf工具（ExcelToPdfUtil）
+
+## test pass
+
+1. genPdf，生成pdf（GenPdf）
+2. 多图片合一pdf（MultiToOneTest）
+3. pdf转图片（PdfToPic）
+4. 图片转pdf（PicToPdf）
+
+---
+
+## unfinished
+
+1. Html转Pdf工具
+2. Word转Pdf工具
+3. PPT转Pdf工具
+4. Excel转Pdf工具
\ No newline at end of file
diff --git a/src/main/resources/markdown/util/util.md b/src/main/resources/markdown/util/util.md
new file mode 100644
index 0000000000000000000000000000000000000000..fb3e9b0bfc244343a7e4f4f13b3c84f15fdf71e7
--- /dev/null
+++ b/src/main/resources/markdown/util/util.md
@@ -0,0 +1,34 @@
+# util
+
+## util
+
+1. Excel导出工具（ExcelExportUtil）
+2. EXcel导入工具（ExcelImportUtil）
+3. 文件读取工具（FileReadUtil）
+4. 文件写入工具（FileWriteUtil）
+5. Http(Https)连接工具（HttpConnectionUtil、HttpUrlConnectionUtil）
+6. Xml解析工具（XmlParseUtil）
+7. 反射工具（InvokeUtil）
+8. 省份城市工具（ProvinceCityUtil）
+9. 数组排序工具（ArraySortUtil）
+
+## test pass
+
+1. Excel导出（ExeclTest）
+2. Execl导入（ExeclTest）
+3. 文件读取（FileTest）
+4. 文件写入（FileTest）
+5. http连接（HttpConnectionTest）
+6. 反射（InvokeTest）
+7. xml解析（XmlTest）
+8. 省份城市工具（ProvinceCityTest）
+
+---
+
+## unfinished
+
+1. 数组排序
+
+## test bug
+
+1. 文件写入工具_从流中写入文件（`FileWriteUtil#writeFromInputStream`）
\ No newline at end of file
diff --git a/src/test/java/com/lin/AppTest.java b/src/test/java/com/lin/AppTest.java
index dd879cf57fdf2ddd41b968790fe7c00fbcfa4492..937277d46839b05879fc45860cdf86acde24b818 100644
--- a/src/test/java/com/lin/AppTest.java
+++ b/src/test/java/com/lin/AppTest.java
@@ -25,4 +25,11 @@ public class AppTest {
             System.out.println(i);
         }
     }
+
+    public static void main(String[] args) {
+        String st1 = "hello";
+        String ste = "he" + new String("llo");
+        System.out.println(ste==st1);
+    }
+
 }
diff --git a/src/test/java/com/lin/TestCountDownLatch/CountDownLatchTest.java b/src/test/java/com/lin/TestCountDownLatch/CountDownLatchTest.java
new file mode 100644
index 0000000000000000000000000000000000000000..c4fc97d6296f9c85e0f87badf5b787456279f703
--- /dev/null
+++ b/src/test/java/com/lin/TestCountDownLatch/CountDownLatchTest.java
@@ -0,0 +1,54 @@
+package com.lin.TestCountDownLatch;
+
+
+import org.junit.Test;
+
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.ThreadLocalRandom;
+
+public class CountDownLatchTest {
+
+    @Test
+    public void testone() throws InterruptedException {
+        CountDownLatch countDownLatch = new CountDownLatch(1);
+        for (int i = 0; i < 5; i++) {
+            new Thread(() -> {
+                try {
+                    //准备完毕……运动员都阻塞在这，等待号令
+                    countDownLatch.await();
+                    String parter = "【" + Thread.currentThread().getName() + "，时间：" + System.currentTimeMillis() + "】";
+                    System.out.println(parter + "开始执行……");
+                } catch (InterruptedException e) {
+                    e.printStackTrace();
+                }
+            }).start();
+        }
+
+        Thread.sleep(2000);
+        System.out.println("发令开始.....");
+        countDownLatch.countDown();
+    }
+
+
+    @Test
+    public void testtwo() throws InterruptedException {
+        CountDownLatch countDownLatch = new CountDownLatch(5);
+        for (int i = 0; i < 5; i++) {
+            final int index = i;
+            new Thread(() -> {
+                try {
+                    Thread.sleep(1000 + ThreadLocalRandom.current().nextInt(1000));
+                    System.out.println("finish，" + index + "，" + Thread.currentThread().getName());
+                    countDownLatch.countDown();
+                } catch (InterruptedException e) {
+                    e.printStackTrace();
+                }
+            }).start();
+        }
+        // 主线程在阻塞，当计数器==0，就唤醒主线程往下执行
+        countDownLatch.await();
+        System.out.println("主线程:在所有任务运行完成后，进行结果汇总");
+    }
+
+
+}
diff --git a/src/test/java/com/lin/localhost/FileRename.java b/src/test/java/com/lin/localhost/FileRename.java
new file mode 100644
index 0000000000000000000000000000000000000000..c3f94b145c2dec6217750151c561f1cc00d252ee
--- /dev/null
+++ b/src/test/java/com/lin/localhost/FileRename.java
@@ -0,0 +1,85 @@
+package com.lin.localhost;
+
+import com.alibaba.fastjson.JSONObject;
+import lombok.extern.slf4j.Slf4j;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileReader;
+import java.io.IOException;
+
+@Slf4j
+public class FileRename {
+
+
+    public static void fileRename(File file) throws IOException {
+        if (file.exists()) {
+            if (file.isDirectory()) {
+                File[] files = file.listFiles();
+                for (File f : files) {
+                    fileRename(f);
+                }
+            }
+            if (file.isFile()) {
+                String name = file.getName();
+                if (name.endsWith(".mp4")) {
+                    String parent = file.getParent();
+                    System.out.println(parent);
+                    String[] s = name.split("_");
+                    File titlefile = new File(parent + "/" + s[0] + ".info");
+                    try {
+                        FileReader reader = new FileReader(titlefile);
+                        BufferedReader bufferedReader = new BufferedReader(reader);
+                        String s1 = bufferedReader.readLine();
+                        JSONObject jsonObject = JSONObject.parseObject(s1);
+                        String title = (String) jsonObject.get("Title");
+                        file.renameTo(new File(parent + File.separator + title.replaceAll("/", "-").replaceAll(" ", "") + ".mp4"));
+//                        File newfile = new File(parent + File.separator + title.trim().replaceAll("/","-") + ".mp4");
+//                        newfile.createNewFile();
+//                        try (FileInputStream fileInputStream = new FileInputStream(file)) {
+//                            try (FileOutputStream fileOutputStream = new FileOutputStream(newfile)) {
+//                                byte[] bytes = new byte[1024];
+//                                while (fileInputStream.read(bytes) > 0) {
+//                                    fileOutputStream.write(bytes);
+//                                }
+//                            }
+//                        }
+                    } catch (Exception e) {
+                        log.error(e.getMessage(), e);
+                    }
+                }
+            }
+        }
+    }
+
+    public static void fileNameTrim(File file) throws IOException {
+        if (file.exists()) {
+            if (file.isDirectory()) {
+                File[] files = file.listFiles();
+                for (File f : files) {
+                    fileNameTrim(f);
+                }
+            }
+            if (file.isFile()) {
+                String name = file.getName();
+                if (name.endsWith(".mp4")) {
+                    String fileName = file.getName();
+                    String parent = file.getParent();
+                    File newfile = new File(parent + File.separator + fileName.replaceAll("/", "-").replaceAll(" ", ""));
+//                    while (newfile.exists()) {
+//                        String fileName2 = parent + File.separator + newfile.getName();
+//                        String newfileName = fileName2.substring(0, fileName2.lastIndexOf(".")) + "(1).mp4";
+//                        newfile = new File(newfileName);
+//                    }
+                    file.renameTo(newfile);
+                }
+            }
+        }
+    }
+
+    public static void main(String[] args) throws IOException {
+        fileRename(new File("D:\\Videos\\BiliBliVideo\\舞蹈"));
+//        fileNameTrim(new File(("D:\\Videos\\BiliBliVideo\\万兴素材")));
+    }
+
+}
diff --git a/src/test/java/com/lin/markdown/v2.0.md b/src/test/java/com/lin/markdown/v2.0.md
deleted file mode 100644
index 2759d29e6604d25319277bccc3285c3816aa806a..0000000000000000000000000000000000000000
--- a/src/test/java/com/lin/markdown/v2.0.md
+++ /dev/null
@@ -1,16 +0,0 @@
-# V2.0
-
-1. Excel导出导入工具（测试已通过）
-2. 文件读取写入工具（测试已通过）
-3. Http(Https)连接工具（测试已通过）
-4. Xml解析工具（测试已通过）
-5. 反射工具（测试已通过）
-6. pdf导出工具（未完成）
-
-### TEST
-
-1. Excel导出导入测试
-2. 文件读写测试
-3. http连接测试
-4. 反射测试
-5. xml解析测试
diff --git a/src/test/java/com/lin/markdown/v3.0.md b/src/test/java/com/lin/markdown/v3.0.md
deleted file mode 100644
index 3030e534feaa5fd80deac1936ad07783fbb496d4..0000000000000000000000000000000000000000
--- a/src/test/java/com/lin/markdown/v3.0.md
+++ /dev/null
@@ -1,25 +0,0 @@
-# V3.0
-
-1. 冒泡排序工具
-2. 选择排序
-3. 插入排序
-4. 计数排序
-5. 归并排序
-6. 希尔排序
-7. 堆排序
-8. 基数排序
-9. 桶排序
-10. 快速排序
-
-### TEST
-
-1. 冒泡排序
-2. 桶排序
-3. 计数排序
-4. 堆排序
-5. 插入排序
-6. 归并排序
-7. 快速排序
-8. 基数排序
-9. 选择排序
-10. 希尔排序
\ No newline at end of file
diff --git a/src/test/java/com/lin/markdown/v4.0.md b/src/test/java/com/lin/markdown/v4.0.md
deleted file mode 100644
index f8c313e5241375417ceb60a7389b3358ef672a87..0000000000000000000000000000000000000000
--- a/src/test/java/com/lin/markdown/v4.0.md
+++ /dev/null
@@ -1,13 +0,0 @@
-# V4.0
-
-1. AVL树实现算法1
-2. AVL树实现算法2
-3. 红黑树实现算法1
-4. 红黑树实现算法2
-5. 二叉平衡树实现算法
-6. 普通二叉树6
-
-### TEST
-
-1. AVL树算法1测试
-2. 红黑树算法2测试
\ No newline at end of file
diff --git a/src/test/java/com/lin/markdown/v5.0.md b/src/test/java/com/lin/markdown/v5.0.md
deleted file mode 100644
index 3c522a7d87b40a866ef6b81e152c922cf5eb974e..0000000000000000000000000000000000000000
--- a/src/test/java/com/lin/markdown/v5.0.md
+++ /dev/null
@@ -1,12 +0,0 @@
-# V5.0
-
-1. 图片转pdf工具，多图片转pdf工具
-2. pdf转图片工具
-3. 多个pdf合成工具
-
-### TEST
-
-1. genPdf,生成pdf
-2. 多图片合一pdf
-3. pdf转图片
-4. 图片转pdf
\ No newline at end of file
diff --git a/src/test/java/com/lin/TestIO/nio/NioRead.java b/src/test/java/com/lin/testcodesnippet/TestIO/nio/NioRead.java
similarity index 85%
rename from src/test/java/com/lin/TestIO/nio/NioRead.java
rename to src/test/java/com/lin/testcodesnippet/TestIO/nio/NioRead.java
index b432d1bf42a9c4318e0a1a7df6b29a685bed334b..816ea08f2f3ef11911f0848c08f64ee8593285a3 100644
--- a/src/test/java/com/lin/TestIO/nio/NioRead.java
+++ b/src/test/java/com/lin/testcodesnippet/TestIO/nio/NioRead.java
@@ -1,4 +1,6 @@
-package com.lin.TestIO.nio;
+package com.lin.testcodesnippet.TestIO.nio;
+
+import org.junit.Test;
 
 import java.io.File;
 import java.io.FileInputStream;
@@ -12,7 +14,8 @@ import java.nio.channels.FileChannel;
  */
 public class NioRead {
 
-    public static void main(String[] args) throws Exception {
+    @Test
+    public void testNioRead() throws Exception {
 
         File file = new File("test.txe");
         // 创建输入流
diff --git a/src/test/java/com/lin/TestIO/nio/NioWrite.java b/src/test/java/com/lin/testcodesnippet/TestIO/nio/NioWrite.java
similarity index 86%
rename from src/test/java/com/lin/TestIO/nio/NioWrite.java
rename to src/test/java/com/lin/testcodesnippet/TestIO/nio/NioWrite.java
index 99c6eecd007dedda739958501b7bd5e41c2fb6dc..c79347b3c0aee0bda304d47f20ad2d46c7b777e7 100644
--- a/src/test/java/com/lin/TestIO/nio/NioWrite.java
+++ b/src/test/java/com/lin/testcodesnippet/TestIO/nio/NioWrite.java
@@ -1,4 +1,6 @@
-package com.lin.TestIO.nio;
+package com.lin.testcodesnippet.TestIO.nio;
+
+import org.junit.Test;
 
 import java.io.FileOutputStream;
 import java.nio.ByteBuffer;
@@ -11,7 +13,8 @@ import java.nio.channels.FileChannel;
  */
 public class NioWrite {
 
-    public static void main(String[] args) throws Exception {
+    @Test
+    public void testNioWrite() throws Exception {
 
         // 创建输出流
         FileOutputStream fileOutputStream = new FileOutputStream("test.txe");
diff --git a/src/test/java/com/lin/TestIO/qq/qq1/NIOClient.java b/src/test/java/com/lin/testcodesnippet/TestIO/qq/qq1/NIOClient.java
similarity index 94%
rename from src/test/java/com/lin/TestIO/qq/qq1/NIOClient.java
rename to src/test/java/com/lin/testcodesnippet/TestIO/qq/qq1/NIOClient.java
index 49630a2ec9886a4a044e3aef5dfb23657cff6fe9..e1f5d3709faafe31a9e9ce57178357f1974f321a 100644
--- a/src/test/java/com/lin/TestIO/qq/qq1/NIOClient.java
+++ b/src/test/java/com/lin/testcodesnippet/TestIO/qq/qq1/NIOClient.java
@@ -1,4 +1,4 @@
-package com.lin.TestIO.qq.qq1;
+package com.lin.testcodesnippet.TestIO.qq.qq1;
 
 import java.io.IOException;
 import java.net.InetAddress;
diff --git a/src/test/java/com/lin/TestIO/qq/qq1/NIOServer.java b/src/test/java/com/lin/testcodesnippet/TestIO/qq/qq1/NIOServer.java
similarity index 98%
rename from src/test/java/com/lin/TestIO/qq/qq1/NIOServer.java
rename to src/test/java/com/lin/testcodesnippet/TestIO/qq/qq1/NIOServer.java
index 3ac71443e27cba9c7f64e676448149f8ccf08d11..32be42d43617a13ace04991f6b881a69c7a443ac 100644
--- a/src/test/java/com/lin/TestIO/qq/qq1/NIOServer.java
+++ b/src/test/java/com/lin/testcodesnippet/TestIO/qq/qq1/NIOServer.java
@@ -1,4 +1,4 @@
-package com.lin.TestIO.qq.qq1;
+package com.lin.testcodesnippet.TestIO.qq.qq1;
 
 import java.io.IOException;
 import java.net.InetSocketAddress;
diff --git a/src/test/java/com/lin/TestIO/qq/qq2/NioClient.java b/src/test/java/com/lin/testcodesnippet/TestIO/qq/qq2/NioClient.java
similarity index 96%
rename from src/test/java/com/lin/TestIO/qq/qq2/NioClient.java
rename to src/test/java/com/lin/testcodesnippet/TestIO/qq/qq2/NioClient.java
index 04f5147781211cef84ce39a524af73601ea7d7b8..b7c65a85c1003f39231362c0eeb0d48bf651bef6 100644
--- a/src/test/java/com/lin/TestIO/qq/qq2/NioClient.java
+++ b/src/test/java/com/lin/testcodesnippet/TestIO/qq/qq2/NioClient.java
@@ -1,4 +1,4 @@
-package com.lin.TestIO.qq.qq2;
+package com.lin.testcodesnippet.TestIO.qq.qq2;
 
 import java.net.InetSocketAddress;
 import java.nio.ByteBuffer;
diff --git a/src/test/java/com/lin/TestIO/qq/qq2/NioServer.java b/src/test/java/com/lin/testcodesnippet/TestIO/qq/qq2/NioServer.java
similarity index 98%
rename from src/test/java/com/lin/TestIO/qq/qq2/NioServer.java
rename to src/test/java/com/lin/testcodesnippet/TestIO/qq/qq2/NioServer.java
index 7bd7c5f9ab01938b79bed042ff3e83c4d40e5ebd..75eb7842aa04de8ded6e5d5d38b743f9fa1e3966 100644
--- a/src/test/java/com/lin/TestIO/qq/qq2/NioServer.java
+++ b/src/test/java/com/lin/testcodesnippet/TestIO/qq/qq2/NioServer.java
@@ -1,4 +1,4 @@
-package com.lin.TestIO.qq.qq2;
+package com.lin.testcodesnippet.TestIO.qq.qq2;
 
 import java.net.InetSocketAddress;
 import java.nio.ByteBuffer;
diff --git a/src/test/java/com/lin/TestSort/BubbleSortTest.java b/src/test/java/com/lin/testcodesnippet/TestSort/BubbleSortTest.java
similarity index 71%
rename from src/test/java/com/lin/TestSort/BubbleSortTest.java
rename to src/test/java/com/lin/testcodesnippet/TestSort/BubbleSortTest.java
index a42a9fcf140b8dc2c1ee01718a192e0b07612c7b..32b9e16624087c8f295c09bb1edb38edd772084c 100644
--- a/src/test/java/com/lin/TestSort/BubbleSortTest.java
+++ b/src/test/java/com/lin/testcodesnippet/TestSort/BubbleSortTest.java
@@ -1,7 +1,7 @@
-package com.lin.TestSort;
+package com.lin.testcodesnippet.TestSort;
 
-import com.lin.enums.SortStatusCode;
-import com.lin.sort.BubbleSort;
+import com.lin.enums.codesnippet.SortStatusCode;
+import com.lin.codesnippet.sort.BubbleSort;
 import org.junit.Test;
 
 /**
diff --git a/src/test/java/com/lin/TestSort/BucketSortTest.java b/src/test/java/com/lin/testcodesnippet/TestSort/BucketSortTest.java
similarity index 80%
rename from src/test/java/com/lin/TestSort/BucketSortTest.java
rename to src/test/java/com/lin/testcodesnippet/TestSort/BucketSortTest.java
index ee6a0d5088e81465167568b58bd242cb41071302..547604104873b99916e000f93e6f8113a0a1b958 100644
--- a/src/test/java/com/lin/TestSort/BucketSortTest.java
+++ b/src/test/java/com/lin/testcodesnippet/TestSort/BucketSortTest.java
@@ -1,6 +1,6 @@
-package com.lin.TestSort;
+package com.lin.testcodesnippet.TestSort;
 
-import com.lin.sort.BucketSort;
+import com.lin.codesnippet.sort.BucketSort;
 import org.junit.Test;
 
 /**
diff --git a/src/test/java/com/lin/TestSort/CountingSortTest.java b/src/test/java/com/lin/testcodesnippet/TestSort/CountingSortTest.java
similarity index 80%
rename from src/test/java/com/lin/TestSort/CountingSortTest.java
rename to src/test/java/com/lin/testcodesnippet/TestSort/CountingSortTest.java
index 19776056ffe9dbfec7254fbfbe1226eb987d68d0..7c3b638b6837d2422b0b644f788cf514971cfbd3 100644
--- a/src/test/java/com/lin/TestSort/CountingSortTest.java
+++ b/src/test/java/com/lin/testcodesnippet/TestSort/CountingSortTest.java
@@ -1,6 +1,6 @@
-package com.lin.TestSort;
+package com.lin.testcodesnippet.TestSort;
 
-import com.lin.sort.CountingSort;
+import com.lin.codesnippet.sort.CountingSort;
 import org.junit.Test;
 
 /**
diff --git a/src/test/java/com/lin/TestSort/HeapSortTest.java b/src/test/java/com/lin/testcodesnippet/TestSort/HeapSortTest.java
similarity index 71%
rename from src/test/java/com/lin/TestSort/HeapSortTest.java
rename to src/test/java/com/lin/testcodesnippet/TestSort/HeapSortTest.java
index ac2a83fbc2cebe14da400ef4aba7458b64731f76..1bff305d838d124860e00ff09c571e4649100251 100644
--- a/src/test/java/com/lin/TestSort/HeapSortTest.java
+++ b/src/test/java/com/lin/testcodesnippet/TestSort/HeapSortTest.java
@@ -1,7 +1,7 @@
-package com.lin.TestSort;
+package com.lin.testcodesnippet.TestSort;
 
-import com.lin.enums.SortStatusCode;
-import com.lin.sort.HeapSort;
+import com.lin.enums.codesnippet.SortStatusCode;
+import com.lin.codesnippet.sort.HeapSort;
 import org.junit.Test;
 
 /**
diff --git a/src/test/java/com/lin/TestSort/InsertionSortTest.java b/src/test/java/com/lin/testcodesnippet/TestSort/InsertionSortTest.java
similarity index 81%
rename from src/test/java/com/lin/TestSort/InsertionSortTest.java
rename to src/test/java/com/lin/testcodesnippet/TestSort/InsertionSortTest.java
index 4e2d225178b48ecf33aeea42057788b590c41908..ff86f8ef18eeb368af7c0a77a804a4f3b9fc478f 100644
--- a/src/test/java/com/lin/TestSort/InsertionSortTest.java
+++ b/src/test/java/com/lin/testcodesnippet/TestSort/InsertionSortTest.java
@@ -1,7 +1,7 @@
-package com.lin.TestSort;
+package com.lin.testcodesnippet.TestSort;
 
-import com.lin.enums.SortStatusCode;
-import com.lin.sort.InsertionSort;
+import com.lin.enums.codesnippet.SortStatusCode;
+import com.lin.codesnippet.sort.InsertionSort;
 import org.junit.Test;
 
 /**
diff --git a/src/test/java/com/lin/TestSort/MergeSortTest.java b/src/test/java/com/lin/testcodesnippet/TestSort/MergeSortTest.java
similarity index 82%
rename from src/test/java/com/lin/TestSort/MergeSortTest.java
rename to src/test/java/com/lin/testcodesnippet/TestSort/MergeSortTest.java
index 67d38f811e695aff140e550cf9d66958980e1233..eb50c8da668375d64c338b8d8188687419455891 100644
--- a/src/test/java/com/lin/TestSort/MergeSortTest.java
+++ b/src/test/java/com/lin/testcodesnippet/TestSort/MergeSortTest.java
@@ -1,7 +1,7 @@
-package com.lin.TestSort;
+package com.lin.testcodesnippet.TestSort;
 
-import com.lin.enums.SortStatusCode;
-import com.lin.sort.MergeSort;
+import com.lin.enums.codesnippet.SortStatusCode;
+import com.lin.codesnippet.sort.MergeSort;
 import org.junit.Test;
 
 /**
diff --git a/src/test/java/com/lin/TestSort/QuickSortedTest.java b/src/test/java/com/lin/testcodesnippet/TestSort/QuickSortedTest.java
similarity index 72%
rename from src/test/java/com/lin/TestSort/QuickSortedTest.java
rename to src/test/java/com/lin/testcodesnippet/TestSort/QuickSortedTest.java
index b3b6b62b89f9a2a94aa51a2f20ab25e7a850c67f..4dae957e12e0ea0d03d2bd98bdf60318d38bd759 100644
--- a/src/test/java/com/lin/TestSort/QuickSortedTest.java
+++ b/src/test/java/com/lin/testcodesnippet/TestSort/QuickSortedTest.java
@@ -1,7 +1,7 @@
-package com.lin.TestSort;
+package com.lin.testcodesnippet.TestSort;
 
-import com.lin.enums.SortStatusCode;
-import com.lin.sort.QuickSort;
+import com.lin.enums.codesnippet.SortStatusCode;
+import com.lin.codesnippet.sort.QuickSort;
 import org.junit.Test;
 
 /**
diff --git a/src/test/java/com/lin/TestSort/RadixSortTest.java b/src/test/java/com/lin/testcodesnippet/TestSort/RadixSortTest.java
similarity index 80%
rename from src/test/java/com/lin/TestSort/RadixSortTest.java
rename to src/test/java/com/lin/testcodesnippet/TestSort/RadixSortTest.java
index b5eef0393b72270ed3acddc1dbfb5d0ec3732fad..7d3e54b17cc61a78ca46c05b49b6039f5d36d028 100644
--- a/src/test/java/com/lin/TestSort/RadixSortTest.java
+++ b/src/test/java/com/lin/testcodesnippet/TestSort/RadixSortTest.java
@@ -1,6 +1,6 @@
-package com.lin.TestSort;
+package com.lin.testcodesnippet.TestSort;
 
-import com.lin.sort.RadixSort;
+import com.lin.codesnippet.sort.RadixSort;
 import org.junit.Test;
 
 /**
diff --git a/src/test/java/com/lin/TestSort/SelectionSortTest.java b/src/test/java/com/lin/testcodesnippet/TestSort/SelectionSortTest.java
similarity index 71%
rename from src/test/java/com/lin/TestSort/SelectionSortTest.java
rename to src/test/java/com/lin/testcodesnippet/TestSort/SelectionSortTest.java
index 472fd8fb354aa63b0a1632825dbe456a74a98be8..e313a8e798a7577b5dc6e39b96120dc6a024fdda 100644
--- a/src/test/java/com/lin/TestSort/SelectionSortTest.java
+++ b/src/test/java/com/lin/testcodesnippet/TestSort/SelectionSortTest.java
@@ -1,7 +1,7 @@
-package com.lin.TestSort;
+package com.lin.testcodesnippet.TestSort;
 
-import com.lin.enums.SortStatusCode;
-import com.lin.sort.SelectionSort;
+import com.lin.enums.codesnippet.SortStatusCode;
+import com.lin.codesnippet.sort.SelectionSort;
 import org.junit.Test;
 
 /**
diff --git a/src/test/java/com/lin/TestSort/ShellSortTest.java b/src/test/java/com/lin/testcodesnippet/TestSort/ShellSortTest.java
similarity index 71%
rename from src/test/java/com/lin/TestSort/ShellSortTest.java
rename to src/test/java/com/lin/testcodesnippet/TestSort/ShellSortTest.java
index f2a3fa42f8307f8b577d4a926ebd73b24bfadf95..0f75db5d0d4035bbdd37e8fdc1b64c300aa421ce 100644
--- a/src/test/java/com/lin/TestSort/ShellSortTest.java
+++ b/src/test/java/com/lin/testcodesnippet/TestSort/ShellSortTest.java
@@ -1,7 +1,7 @@
-package com.lin.TestSort;
+package com.lin.testcodesnippet.TestSort;
 
-import com.lin.enums.SortStatusCode;
-import com.lin.sort.ShellSort;
+import com.lin.enums.codesnippet.SortStatusCode;
+import com.lin.codesnippet.sort.ShellSort;
 import org.junit.Test;
 
 /**
diff --git a/src/test/java/com/lin/TestTree/AVLTree1Test.java b/src/test/java/com/lin/testcodesnippet/TestTree/AVLTree1Test.java
similarity index 75%
rename from src/test/java/com/lin/TestTree/AVLTree1Test.java
rename to src/test/java/com/lin/testcodesnippet/TestTree/AVLTree1Test.java
index 0298d75bbd813a3a3a4f9fcae6909f6100777cb3..91d7238364a9f69cfdfc425b9d9ac2c5cf01801c 100644
--- a/src/test/java/com/lin/TestTree/AVLTree1Test.java
+++ b/src/test/java/com/lin/testcodesnippet/TestTree/AVLTree1Test.java
@@ -1,6 +1,7 @@
-package com.lin.TestTree;
+package com.lin.testcodesnippet.TestTree;
 
-import com.lin.tree.nome.avltree.AVLTree1;
+import com.lin.codesnippet.treeNome.avltree.AVLTree1;
+import org.junit.Test;
 
 /**
  * AVL树测试
@@ -9,7 +10,11 @@ import com.lin.tree.nome.avltree.AVLTree1;
  */
 public class AVLTree1Test {
 
-    public static void main(String[] args) {
+    /**
+     * test pass
+     */
+    @Test
+    public void testAVLTree1() {
         AVLTree1<Integer> avl = new AVLTree1<>();
         /*可自行添加插入，删除操作进行测试*/
         avl.insert(3);
diff --git a/src/test/java/com/lin/TestTree/RBTree2Test.java b/src/test/java/com/lin/testcodesnippet/TestTree/RBTree2Test.java
similarity index 68%
rename from src/test/java/com/lin/TestTree/RBTree2Test.java
rename to src/test/java/com/lin/testcodesnippet/TestTree/RBTree2Test.java
index 3bb0a1681818be37ef007618094ea4e320e45649..abbea2e678bf97450b0e7157f00ad7e9bf91b560 100644
--- a/src/test/java/com/lin/TestTree/RBTree2Test.java
+++ b/src/test/java/com/lin/testcodesnippet/TestTree/RBTree2Test.java
@@ -1,6 +1,7 @@
-package com.lin.TestTree;
+package com.lin.testcodesnippet.TestTree;
 
-import com.lin.tree.nome.rbtree.RBTree2;
+import com.lin.codesnippet.treeNome.rbtree.RBTree2;
+import org.junit.Test;
 
 /**
  * 红黑树测试
@@ -9,7 +10,11 @@ import com.lin.tree.nome.rbtree.RBTree2;
  */
 public class RBTree2Test {
 
-    public static void main(String[] args) {
+    /**
+     * test pass
+     */
+    @Test
+    public void testRBTree2() {
         RBTree2 T = new RBTree2();
         RBTree2.RedBlackTreeNode node1 = T.RB_NODE(10);
         T.RB_INSERT(T, node1);
diff --git a/src/test/java/com/lin/TestUtil/ExcelTest.java b/src/test/java/com/lin/testutil/ExcelTest.java
similarity index 66%
rename from src/test/java/com/lin/TestUtil/ExcelTest.java
rename to src/test/java/com/lin/testutil/ExcelTest.java
index d6fd9b4f7c58b5d8b5cf350a44138d24610563ab..237a7a89521863eb9955ab87bf80122b1f1a1deb 100644
--- a/src/test/java/com/lin/TestUtil/ExcelTest.java
+++ b/src/test/java/com/lin/testutil/ExcelTest.java
@@ -1,5 +1,6 @@
-package com.lin.TestUtil;
+package com.lin.testutil;
 
+import com.alibaba.fastjson.JSON;
 import com.lin.dto.BookDto;
 import com.lin.util.ExcelExportUtil;
 import com.lin.util.ExcelImportUtil;
@@ -18,11 +19,17 @@ import java.util.List;
  */
 public class ExcelTest {
 
+    private static final String filePath = "temp/";
 
+    /**
+     * test pass
+     *
+     * @throws IllegalAccessException
+     * @throws IOException
+     */
     @Test
     public void exportExcelTest() throws IllegalAccessException, IOException {
-//        String filepath = "/Users/linqiankun/Desktop/testexcel.xls";
-        String filepath = "src/test/resources/testExcel.xml";
+        String newFilePath = filePath + "testExcel.xls";
         BookDto b = new BookDto();
         b.setAuthor("cvbnm");
         b.setLanguage("english");
@@ -35,20 +42,24 @@ public class ExcelTest {
 
         HSSFWorkbook excel = ExcelExportUtil.getExcel(l, str);
 
-        File file = FileWriteUtil.canCreatFile(filepath);
+        File file = FileWriteUtil.canCreatFile(newFilePath);
         FileOutputStream out = new FileOutputStream(file);
         excel.write(out);
 
     }
 
+    /**
+     * test pass
+     *
+     * @throws FileNotFoundException
+     */
     @Test
     public void importExcelTest() throws FileNotFoundException {
-//        String filepath = "/Users/linqiankun/Desktop/testexcel.xls";
-        String filepath = "src/test/resources/testExcel.xml";
-        File file = FileWriteUtil.canCreatFile(filepath);
+        String newFilePath = filePath + "testExcel.xls";
+        File file = FileWriteUtil.canCreatFile(newFilePath);
         FileInputStream in = new FileInputStream(file);
         List<String[]> strings = ExcelImportUtil.readExcelFile(in, 1, 2);//从第二行开始读，就是2
-        System.out.println(strings);
+        System.out.println(JSON.toJSONString(strings));
 
     }
 
diff --git a/src/test/java/com/lin/TestUtil/FileTest.java b/src/test/java/com/lin/testutil/FileTest.java
similarity index 44%
rename from src/test/java/com/lin/TestUtil/FileTest.java
rename to src/test/java/com/lin/testutil/FileTest.java
index 1f978ee9f36a37e2c771427dac3032ec26f22519..1845b9634886306576260c7dff26db69bbedda20 100644
--- a/src/test/java/com/lin/TestUtil/FileTest.java
+++ b/src/test/java/com/lin/testutil/FileTest.java
@@ -1,14 +1,11 @@
-package com.lin.TestUtil;
+package com.lin.testutil;
 
-import com.alibaba.fastjson.JSON;
-import com.lin.dto.SenseCallbackDto;
 import com.lin.util.FileReadUtil;
 import com.lin.util.FileWriteUtil;
 import org.junit.Test;
 
 import java.io.IOException;
 import java.io.InputStream;
-import java.util.List;
 
 /**
  * 文件读取测试，将读取到的文件反射进对象集合中
@@ -17,30 +14,35 @@ import java.util.List;
  */
 public class FileTest {
 
+    private static final String filePath = "temp/fileString.txt";
+
+    /**
+     * test pass
+     *
+     * @throws IOException
+     */
     @Test
     public void readFileToStringTest() throws IOException {
-//        String filepath = "/Users/linqiankun/Desktop/test";
-        String filepath = "src/test/resources/test";
-        String s = FileReadUtil.readFileToString(filepath);
-
-        List<SenseCallbackDto> reslutList = JSON.parseArray(s, SenseCallbackDto.class);
-        System.out.println(reslutList.size());
+        String s = FileReadUtil.readFileToString(filePath);
+        System.out.println(s);
     }
 
+    /**
+     * test pass
+     */
     @Test
     public void writeFromStringTest() {
-//        String filepath = "/Users/linqiankun/Desktop/test";
-        String filepath = "src/test/resources/test";
         String s = "wertyukmcdrtyukmnhgfrtyu";
-        FileWriteUtil.writeFromString(s, filepath);
+        FileWriteUtil.writeFromString(s, filePath);
     }
 
+    /**
+     * test bug
+     */
     @Test
     public void writeFromInputStreamTest() {
         InputStream in = this.getClass().getClassLoader().getResourceAsStream("book.xml");
-//        String filepath = "/Users/linqiankun/Desktop/test1";
-        String filepath = "src/test/resources/test";
-        FileWriteUtil.writeFromInputStream(in, filepath);
+        FileWriteUtil.writeFromInputStream(in, filePath);
     }
 
 }
\ No newline at end of file
diff --git a/src/test/java/com/lin/TestUtil/HttpConnectionTest.java b/src/test/java/com/lin/testutil/HttpConnectionTest.java
similarity index 69%
rename from src/test/java/com/lin/TestUtil/HttpConnectionTest.java
rename to src/test/java/com/lin/testutil/HttpConnectionTest.java
index 50de472b2edb295af6cdeca103aeddc0eb320030..38ab55fd40b134918ac55411b13a069141bf110b 100644
--- a/src/test/java/com/lin/TestUtil/HttpConnectionTest.java
+++ b/src/test/java/com/lin/testutil/HttpConnectionTest.java
@@ -1,4 +1,4 @@
-package com.lin.TestUtil;
+package com.lin.testutil;
 
 import com.lin.util.HttpConnectionUtil;
 import com.lin.util.HttpUrlConnectionUtil;
@@ -11,16 +11,26 @@ import org.junit.Test;
  */
 public class HttpConnectionTest {
 
+    /**
+     * test pass
+     */
     @Test
     public void httpConnectionTest() {
         String get = HttpConnectionUtil.sendGet("http://www.baidu.com");
-        String post = HttpConnectionUtil.sendPost("http://www.baidu.com", null);
+        System.out.println(get);
+        String post = HttpConnectionUtil.sendPost("http://www.baidu.com", "");
+        System.out.println(post);
     }
 
+    /**
+     * test pass
+     */
     @Test
     public void httpUrlConnectionTest() {
         String get = HttpUrlConnectionUtil.doGet("http://www.baidu.com");
-        String post = HttpUrlConnectionUtil.doPost("http://www.baidu.com", null);
+        System.out.println(get);
+        String post = HttpUrlConnectionUtil.doPost("http://www.baidu.com", "");
+        System.out.println(post);
     }
 
 
diff --git a/src/test/java/com/lin/TestUtil/InvokeTest.java b/src/test/java/com/lin/testutil/InvokeTest.java
similarity index 92%
rename from src/test/java/com/lin/TestUtil/InvokeTest.java
rename to src/test/java/com/lin/testutil/InvokeTest.java
index 7f49e5c0f575f0c7c730c9088477132267899ee8..09886d130a248ed4cb80227ef1e4e046e46e1c4e 100644
--- a/src/test/java/com/lin/TestUtil/InvokeTest.java
+++ b/src/test/java/com/lin/testutil/InvokeTest.java
@@ -1,4 +1,4 @@
-package com.lin.TestUtil;
+package com.lin.testutil;
 
 import com.lin.dto.BookDto;
 import com.lin.dto.SenseCallbackDto;
@@ -21,6 +21,9 @@ import java.util.Map;
  */
 public class InvokeTest {
 
+    /**
+     * test pass
+     */
     @Test
     public void setFromMapTest() {
         String filepath = "src/test/resources/book.xml";
@@ -35,11 +38,13 @@ public class InvokeTest {
             l.add(bookDto);
         }
         System.out.println(l.toString());
-
     }
 
-
-    public static void main(String[] args) throws IllegalAccessException {
+    /**
+     * test pass
+     */
+    @Test
+    public void testDto(String[] args) throws IllegalAccessException {
         SenseCallbackDto dto = new SenseCallbackDto();
         dto.setBatchId("111");
         dto.setAudio("a");
diff --git a/src/test/java/com/lin/TestUtil/ProvinceCityTest.java b/src/test/java/com/lin/testutil/ProvinceCityTest.java
similarity index 87%
rename from src/test/java/com/lin/TestUtil/ProvinceCityTest.java
rename to src/test/java/com/lin/testutil/ProvinceCityTest.java
index 682ea787bc669782aa4dccdd98d4f1200944de94..74dde746d0754da5d72491cc205b18f4516e81d0 100644
--- a/src/test/java/com/lin/TestUtil/ProvinceCityTest.java
+++ b/src/test/java/com/lin/testutil/ProvinceCityTest.java
@@ -1,4 +1,4 @@
-package com.lin.TestUtil;
+package com.lin.testutil;
 
 
 import com.lin.util.ProvinceCityUtil;
@@ -14,12 +14,18 @@ import java.util.Map;
  */
 public class ProvinceCityTest {
 
+    /**
+     * test pass
+     */
     @Test
     public void provinceCityTest() {
         List<Map<String, String>> maps = ProvinceCityUtil.addressResolution("北京市市辖区丰台区");
         System.out.println(maps);
     }
 
+    /**
+     * test pass
+     */
     @Test
     public void provinceCityTestNo() {
         Map<String, String> maps = ProvinceCityUtil.addressResolutionNoTwo("内蒙古维吾尔组自治区胡琦市");
diff --git a/src/test/java/com/lin/TestUtil/XmlTest.java b/src/test/java/com/lin/testutil/XmlTest.java
similarity index 97%
rename from src/test/java/com/lin/TestUtil/XmlTest.java
rename to src/test/java/com/lin/testutil/XmlTest.java
index 705ce33dd25681969204dbc809530e070d45856d..f1690e9e77e51d33fe8a4e9a28f10630237213f5 100644
--- a/src/test/java/com/lin/TestUtil/XmlTest.java
+++ b/src/test/java/com/lin/testutil/XmlTest.java
@@ -1,4 +1,4 @@
-package com.lin.TestUtil;
+package com.lin.testutil;
 
 import com.lin.util.XmlParseUtil;
 import org.junit.Test;
diff --git a/src/test/java/com/lin/TestPdfUtil/GenPdf.java b/src/test/java/com/lin/testutil/testpdfutil/GenPdf.java
similarity index 91%
rename from src/test/java/com/lin/TestPdfUtil/GenPdf.java
rename to src/test/java/com/lin/testutil/testpdfutil/GenPdf.java
index 9898eb12c8274e2fe6b641697e42b9f32d37ddf0..71b5f774fe71cdbccc31f628483fc20ba6327368 100644
--- a/src/test/java/com/lin/TestPdfUtil/GenPdf.java
+++ b/src/test/java/com/lin/testutil/testpdfutil/GenPdf.java
@@ -1,17 +1,19 @@
-package com.lin.TestPdfUtil;
+package com.lin.testutil.testpdfutil;
 
-import com.itextpdf.text.*;
 import com.itextpdf.text.Font;
-import com.itextpdf.text.pdf.*;
+import com.itextpdf.text.*;
+import com.itextpdf.text.pdf.BaseFont;
+import com.itextpdf.text.pdf.PdfCopy;
+import com.itextpdf.text.pdf.PdfPCell;
+import com.itextpdf.text.pdf.PdfPTable;
 import com.lin.util.FileWriteUtil;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.rendering.PDFRenderer;
 import org.junit.Test;
 
-
 import javax.imageio.ImageIO;
-import java.awt.*;
 import java.awt.Image;
+import java.awt.*;
 import java.awt.image.BufferedImage;
 import java.io.*;
 
@@ -22,13 +24,17 @@ import java.io.*;
  */
 public class GenPdf {
 
-
-    String p = "/Users/linqiankun/Documents/需求文件/";
     int dataNums = 120;
+    private static final String p = "temp/";
 
+    /**
+     * test pass
+     *
+     * @throws FileNotFoundException
+     */
     @Test
     public void test1() throws FileNotFoundException {//生成pdf
-//        FileOutputStream outputStream = new FileOutputStream(p + "a.pdf");
+//        FileOutputStream outputStream = new FileOutputStream("a.pdf");
 
         ByteArrayOutputStream b = new ByteArrayOutputStream();
         Document document = new Document();
@@ -117,7 +123,7 @@ public class GenPdf {
             document.close();
             byte[] bytes = b.toByteArray();
             ByteArrayInputStream inputStream = new ByteArrayInputStream(bytes);
-            test2(inputStream);
+            savePdf(inputStream);
 
 //            outputStream.write(bytes);
 //            outputStream.flush();
@@ -147,7 +153,7 @@ public class GenPdf {
     }
 
 
-    public void test2(ByteArrayInputStream inputStream) throws IOException {
+    public void savePdf(ByteArrayInputStream inputStream) throws IOException {
         byte[] b = new byte[inputStream.available()];
         inputStream.read(b);
         PDDocument pdDocument = PDDocument.load(b);
@@ -158,7 +164,10 @@ public class GenPdf {
 
 
         ByteArrayOutputStream temp;
-        String p = "/Users/linqiankun/Documents/需求文件/";
+        File file = new File(p);
+        if (!file.exists()) {
+            file.mkdirs();
+        }
         for (int i = 0; i < numberOfPages; i++) {
             String path = p + i + ".jpg";
             BufferedImage image = renderer.renderImageWithDPI(i, 90);
diff --git a/src/test/java/com/lin/TestPdfUtil/MultiToOneTest.java b/src/test/java/com/lin/testutil/testpdfutil/MultiToOneTest.java
similarity index 30%
rename from src/test/java/com/lin/TestPdfUtil/MultiToOneTest.java
rename to src/test/java/com/lin/testutil/testpdfutil/MultiToOneTest.java
index ab0376b2cbc90af950811d862d5d98383d05c7af..fa2b43bc5ac107006213f5a5f8f88e2017927fdd 100644
--- a/src/test/java/com/lin/TestPdfUtil/MultiToOneTest.java
+++ b/src/test/java/com/lin/testutil/testpdfutil/MultiToOneTest.java
@@ -1,12 +1,15 @@
-package com.lin.TestPdfUtil;
+package com.lin.testutil.testpdfutil;
 
 import com.itextpdf.text.DocumentException;
-import com.lin.pdfutil.MultiPdfToOnePdfUtil;
 import com.lin.util.FileWriteUtil;
+import com.lin.util.pdfutil.MultiPdfToOnePdfUtil;
 import org.junit.Test;
 
-import java.io.*;
-import java.util.ArrayList;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.util.LinkedList;
 import java.util.List;
 
 /**
@@ -16,32 +19,52 @@ import java.util.List;
  */
 public class MultiToOneTest {
 
+    private static final String filePath = "temp/";
 
+    /**
+     * test pass
+     */
     @Test
     public void testOne() {
-        String filePath = "/Users/linqiankun/Downloads/ll";
-        String pdfPath = filePath + "1.pdf";
+        String pdfPath = filePath + "mutil1.pdf";
         FileWriteUtil.canCreatFile(pdfPath);
         MultiPdfToOnePdfUtil.picToPdf(filePath, pdfPath);
     }
 
 
+    /**
+     * test pass
+     *
+     * @throws IOException
+     * @throws DocumentException
+     */
     @Test
     public void testTwo() throws IOException, DocumentException {
-        FileInputStream in = new FileInputStream("/Users/linqiankun/Documents/需求文件/法催3.4的副本.pdf");
-        FileInputStream ins = new FileInputStream("/Users/linqiankun/Documents/需求文件/法催3.4的副本2.pdf");
-        byte[] buf = new byte[in.available()];
-        byte[] bufs = new byte[ins.available()];
-        int read = in.read(buf);
-        int read1 = ins.read(bufs);
+//        FileInputStream in = new FileInputStream("/Users/linqiankun/Documents/需求文件/法催3.4的副本.pdf");
+//        FileInputStream ins = new FileInputStream("/Users/linqiankun/Documents/需求文件/法催3.4的副本2.pdf");
+//        byte[] buf = new byte[in.available()];
+//        byte[] bufs = new byte[ins.available()];
+//        int read = in.read(buf);
+//        int read1 = ins.read(bufs);
 
-        List<byte[]> bytes = new ArrayList<>();
-        bytes.add(buf);
-        bytes.add(bufs);
+        File file = new File(filePath);
+        boolean directory = file.isDirectory();
+        List<byte[]> bytes = new LinkedList<>();
+        if (directory) {
+            File[] files = file.listFiles();
+            for (File f : files) {
+                if (f.isFile() && f.getName().toLowerCase().endsWith(".pdf")) {
+                    FileInputStream inputStream = new FileInputStream(f);
+                    byte[] buf = new byte[inputStream.available()];
+                    int read = inputStream.read(buf);
+                    bytes.add(buf);
+                }
+            }
+        }
 
         byte[] bytes1 = MultiPdfToOnePdfUtil.pdfmMix(bytes);
 
-        String pdf = "/Users/linqiankun/Documents/需求文件/1.pdf";
+        String pdf = filePath + "mutil2.pdf";
 
         FileWriteUtil.canCreatFile(pdf);
         FileOutputStream o = new FileOutputStream(pdf);
diff --git a/src/test/java/com/lin/TestPdfUtil/PdfToPicTest.java b/src/test/java/com/lin/testutil/testpdfutil/PdfToPicTest.java
similarity index 62%
rename from src/test/java/com/lin/TestPdfUtil/PdfToPicTest.java
rename to src/test/java/com/lin/testutil/testpdfutil/PdfToPicTest.java
index 4771f3bcf92c7933a3e0d9922f9569e46b1ffe68..0991d15d02b44b8082fff34a828bbe7edb2d7b2b 100644
--- a/src/test/java/com/lin/TestPdfUtil/PdfToPicTest.java
+++ b/src/test/java/com/lin/testutil/testpdfutil/PdfToPicTest.java
@@ -1,10 +1,13 @@
-package com.lin.TestPdfUtil;
+package com.lin.testutil.testpdfutil;
 
-import com.lin.pdfutil.PdfToPicUtil;
 import com.lin.util.FileWriteUtil;
+import com.lin.util.pdfutil.PdfToPicUtil;
 import org.junit.Test;
 
-import java.io.*;
+import java.io.ByteArrayOutputStream;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
 import java.util.List;
 
 /**
@@ -14,14 +17,21 @@ import java.util.List;
  */
 public class PdfToPicTest {
 
+    private static final String filePath = "temp/";
+
+    /**
+     * test pass
+     *
+     * @throws IOException
+     */
     @Test
     public void testOne() throws IOException {
-        FileInputStream in = new FileInputStream("/Users/linqiankun/Documents/需求文件/法催3.4的副本.pdf");
+        FileInputStream in = new FileInputStream(filePath + "mutil1.pdf");
         List<ByteArrayOutputStream> byteArrayOutputStreams = PdfToPicUtil.pdfToPic1(in);
         for (int i = 0; i < byteArrayOutputStreams.size(); i++) {
-            String filePath = "/Users/linqiankun/Documents/需求文件/" + i + 2 + ".jpg";
-            FileWriteUtil.canCreatFile(filePath);
-            FileOutputStream outputStream = new FileOutputStream(filePath);
+            String newfilePath = filePath + i + 1 + ".jpg";
+            FileWriteUtil.canCreatFile(newfilePath);
+            FileOutputStream outputStream = new FileOutputStream(newfilePath);
             ByteArrayOutputStream byteArrayOutputStream = byteArrayOutputStreams.get(i);
             byte[] bytes = byteArrayOutputStream.toByteArray();
             outputStream.write(bytes);
@@ -31,14 +41,19 @@ public class PdfToPicTest {
         }
     }
 
+    /**
+     * test pass
+     *
+     * @throws IOException
+     */
     @Test
     public void testTwo() throws IOException {
-        FileInputStream in = new FileInputStream("/Users/linqiankun/Documents/需求文件/法催3.4的副本.pdf");
+        FileInputStream in = new FileInputStream(filePath + "mutil1.pdf");
         List<ByteArrayOutputStream> byteArrayOutputStreams = PdfToPicUtil.pdfToPic2(in);
         for (int i = 0; i < byteArrayOutputStreams.size(); i++) {
-            String filePath = "/Users/linqiankun/Documents/需求文件/" + i + ".PNG";
-            FileWriteUtil.canCreatFile(filePath);
-            FileOutputStream outputStream = new FileOutputStream(filePath);
+            String newfilePath = filePath + i + 2 + ".PNG";
+            FileWriteUtil.canCreatFile(newfilePath);
+            FileOutputStream outputStream = new FileOutputStream(newfilePath);
             ByteArrayOutputStream byteArrayOutputStream = byteArrayOutputStreams.get(i);
             byte[] bytes = byteArrayOutputStream.toByteArray();
             outputStream.write(bytes);
diff --git a/src/test/java/com/lin/TestPdfUtil/PicToPdfTest.java b/src/test/java/com/lin/testutil/testpdfutil/PicToPdfTest.java
similarity index 54%
rename from src/test/java/com/lin/TestPdfUtil/PicToPdfTest.java
rename to src/test/java/com/lin/testutil/testpdfutil/PicToPdfTest.java
index 52a4878320531eca6c688425a43dfe7982cd1b13..e7c7709c1e9c208590bbf7a127417c33e3adc7f4 100644
--- a/src/test/java/com/lin/TestPdfUtil/PicToPdfTest.java
+++ b/src/test/java/com/lin/testutil/testpdfutil/PicToPdfTest.java
@@ -1,11 +1,14 @@
-package com.lin.TestPdfUtil;
+package com.lin.testutil.testpdfutil;
 
 import com.itextpdf.text.DocumentException;
-import com.lin.pdfutil.PicToPdfUtil;
 import com.lin.util.FileWriteUtil;
+import com.lin.util.pdfutil.PicToPdfUtil;
 import org.junit.Test;
 
-import java.io.*;
+import java.io.ByteArrayOutputStream;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
 
 /**
  * 图片转pdf
@@ -14,12 +17,18 @@ import java.io.*;
  */
 public class PicToPdfTest {
 
+    private static final String filePath = "temp/";
 
+
+    /**
+     * test pass
+     *
+     * @throws IOException
+     */
     @Test
     public void testOne() throws IOException {
-        String filePath = "/Users/linqiankun/Documents/需求文件/";
-        FileInputStream in = new FileInputStream(filePath + "02.jpg");
-        String pdfPath = filePath + "1.pdf";
+        FileInputStream in = new FileInputStream(filePath + "0.jpg");
+        String pdfPath = filePath + "0.pdf";
         FileWriteUtil.canCreatFile(pdfPath);
         FileOutputStream outputStream = new FileOutputStream(pdfPath);
         ByteArrayOutputStream byteArrayOutputStream = PicToPdfUtil.picToPdf1(in);
@@ -30,20 +39,29 @@ public class PicToPdfTest {
     }
 
 
+    /**
+     * test pass
+     *
+     * @throws IOException
+     */
     @Test
     public void testTwo() throws IOException {
-        String filePath = "/Users/linqiankun/Documents/需求文件/";
-        String imgPath = filePath + "02.jpg";
-        String pdfPath = filePath + "02.pdf";
+        String imgPath = filePath + "1.jpg";
+        String pdfPath = filePath + "1.pdf";
         PicToPdfUtil.imgToPdf2(imgPath, pdfPath);
     }
 
 
+    /**
+     * test pass
+     *
+     * @throws IOException
+     * @throws DocumentException
+     */
     @Test
     public void testThree() throws IOException, DocumentException {
-        String filePath = "/Users/linqiankun/Documents/需求文件/";
-        String imgPath = filePath + "02.jpg";
-        String pdfPath = filePath + "02.pdf";
+        String imgPath = filePath + "2.jpg";
+        String pdfPath = filePath + "2.pdf";
         PicToPdfUtil.imageToPdf3(imgPath, pdfPath);
     }