From 7cc32ee4a7afebb5cecb63618c07fd16300d9394 Mon Sep 17 00:00:00 2001
From: Administrator <17779658783@163.com>
Date: Tue, 28 May 2024 19:37:57 +0800
Subject: [PATCH] =?UTF-8?q?feat:=E4=BD=9C=E4=B8=9A?=
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---
 .../Gaoyaoaishanglixinwei.java"               | 74 +++++++++++++++++++
 1 file changed, 74 insertions(+)
 create mode 100644 "work/com/java/minxi/java_20240524/java_2302_\347\216\213\347\216\211\344\272\256_2344310231/Gaoyaoaishanglixinwei.java"

diff --git "a/work/com/java/minxi/java_20240524/java_2302_\347\216\213\347\216\211\344\272\256_2344310231/Gaoyaoaishanglixinwei.java" "b/work/com/java/minxi/java_20240524/java_2302_\347\216\213\347\216\211\344\272\256_2344310231/Gaoyaoaishanglixinwei.java"
new file mode 100644
index 0000000..edf41c5
--- /dev/null
+++ "b/work/com/java/minxi/java_20240524/java_2302_\347\216\213\347\216\211\344\272\256_2344310231/Gaoyaoaishanglixinwei.java"
@@ -0,0 +1,74 @@
+package com.java.minxi.java_20240524.java_2302_王玉亮_2344310231;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.ResultSet;
+import java.sql.Statement;
+
+public class Gaoyaoaishanglixinwei {
+
+    public static void One() throws Exception{
+        //1. 注册驱动
+//        Class.forName("com.mysql.cj.jdbc.Driver");
+
+        String url = "jdbc:mysql:///student?serverTimezone=Asia/Shanghai";
+        String username = "root";
+        String password = "123456";
+        Connection conn = DriverManager.getConnection(url, username, password);
+        String sql = "select * from teacher_info;";
+        Statement stmt = conn.createStatement();
+        ResultSet resultSet = stmt.executeQuery(sql);
+
+
+    }
+    private static void two() throws Exception{
+        //1. 获取连接
+        String url = "jdbc:mysql:///student?serverTimezone=Asia/Shanghai";
+        String username = "root";
+        String password = "123456";
+        Connection conn = DriverManager.getConnection(url, username, password);
+
+        //2. 定义sql
+        String sql = "select * from teacher_info where id = 1 && teacher_age = 35;";
+        Statement stmt = conn.createStatement();
+
+        ResultSet resultSet = stmt.executeQuery(sql);
+
+        System.out.println("id为1，且年龄为35岁的用户:");
+        System.out.println("id\t\tteacher_name\tteacher_age");
+        while (resultSet.next()){
+            int id = resultSet.getInt(1);
+            String name = resultSet.getString(2);
+            int age = resultSet.getInt(3);
+            System.out.println(id+"\t\t"+name+"\t\t\t"+age);
+        }
+        System.out.println();
+        //6. 释放资源S
+        resultSet.close();
+        stmt.close();
+        conn.close();
+    }
+    public static void three() throws Exception{
+        String url = "jdbc:mysql://127.0.0.1:3306/company?serverTimezone=Asia/Shanghai";
+        String userName = "root";
+        String passWord = "123456";
+
+        Connection conn = DriverManager.getConnection(url, userName, passWord);
+
+
+        String sql = "update teacher_info set teacher_name = '小严' where id = 3;";
+        Statement statement= conn.createStatement();
+
+        int i = statement.executeUpdate(sql);
+        if (i>0){
+            System.out.println("修改成功~");
+        }else{
+            System.out.println("修改失败~");
+        }
+
+        //5. 释放资源
+        statement.close();
+        conn.close();
+    }
+
+}
-- 
Gitee