diff --git a/MamaCollege/src/main/java/edu/mama/college/controller/admin/CourseController.java b/MamaCollege/src/main/java/edu/mama/college/controller/admin/CourseController.java
index 61fe9d9664f4bbbe8902abbbcf698979b1527671..fcbb87866d3aea81446c6fbd0af22f6201744c1d 100644
--- a/MamaCollege/src/main/java/edu/mama/college/controller/admin/CourseController.java
+++ b/MamaCollege/src/main/java/edu/mama/college/controller/admin/CourseController.java
@@ -3,13 +3,10 @@ package edu.mama.college.controller.admin;
 import edu.mama.college.model.Course;
 import edu.mama.college.model.JsonResult;
 import edu.mama.college.model.Page;
-import edu.mama.college.model.User;
 import edu.mama.college.service.CourseService;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.bind.annotation.*;
 
-import java.util.List;
-
 @RestController("adminCourseController")
 @RequestMapping("/admin")
 public class CourseController {
diff --git a/MamaCollege/src/main/java/edu/mama/college/controller/admin/ResourceController.java b/MamaCollege/src/main/java/edu/mama/college/controller/admin/ResourceController.java
index 0715a05ff390987025d458e193218db09ca66af4..7c40b8a54596ad2772a17d60d27f49f3aab167c7 100644
--- a/MamaCollege/src/main/java/edu/mama/college/controller/admin/ResourceController.java
+++ b/MamaCollege/src/main/java/edu/mama/college/controller/admin/ResourceController.java
@@ -133,7 +133,7 @@ public class ResourceController {
     }
 
     /**
-     * 素材中心（视频/图片）分页查询
+     * 素材中心调整轮播图
      */
     @PostMapping("/resource/carousel")
     public JsonResult carousel(@RequestBody List<Carousel> list) {
diff --git a/MamaCollege/src/main/java/edu/mama/college/mapper/CourseMapper.java b/MamaCollege/src/main/java/edu/mama/college/mapper/CourseMapper.java
index 00642164b80c4746ae38d07a55a76abdd8cd600a..08ed6a09afc6f33e868eafff0ebf0fb6dfea410e 100644
--- a/MamaCollege/src/main/java/edu/mama/college/mapper/CourseMapper.java
+++ b/MamaCollege/src/main/java/edu/mama/college/mapper/CourseMapper.java
@@ -8,7 +8,7 @@ import java.util.List;
 @Mapper
 public interface CourseMapper {
 
-    @Select("SELECT * FROM course ORDER BY students DESC LIMIT #{limit}")
+    @Select("SELECT * FROM course WHERE deleted = false ORDER BY students DESC LIMIT #{limit}")
     List<Course> hotCourse(@Param("limit") int limit);
 
     Course detail(@Param("id") int id);
diff --git a/MamaCollege/src/main/resources/application.yml b/MamaCollege/src/main/resources/application.yml
index 97ff5785c4236cd2074db7d421191d17eb83af28..9d7aff6b345fb093890cfe1958bfedbe3f1c2451 100644
--- a/MamaCollege/src/main/resources/application.yml
+++ b/MamaCollege/src/main/resources/application.yml
@@ -1,8 +1,8 @@
 spring:
   servlet:
     multipart:
-      max-file-size: 5GB                                                #允许上传的文件大小
-      max-request-size: 5GB                                             #允许一次请求上传的文件大小
+      max-file-size: 2GB                                                #允许上传的文件大小
+      max-request-size: 2GB                                             #允许一次请求上传的文件大小
   jackson:
     serialization:
       write-dates-as-timestamps: true                                   #输出日期为时间戳
diff --git a/MamaCollege/src/main/resources/mapper/CourseMapper.xml b/MamaCollege/src/main/resources/mapper/CourseMapper.xml
index 37e26fb24a3282737ac883e04810595ffa915e61..3a9574a04de8f76214a5dd26a0f646d4e66d63a0 100644
--- a/MamaCollege/src/main/resources/mapper/CourseMapper.xml
+++ b/MamaCollege/src/main/resources/mapper/CourseMapper.xml
@@ -41,11 +41,12 @@
 
     <sql id="coursePaginationQueryCriteria">
         <where>
+            deleted = false
             <if test="name != '' and name != null">
-                name LIKE CONCAT('%', #{name}, '%')
+                AND name LIKE CONCAT('%', #{name}, '%')
             </if>
             <if test="teacher != '' and teacher != null">
-                teacher LIKE CONCAT('%', #{teacher}, '%')
+                AND teacher LIKE CONCAT('%', #{teacher}, '%')
             </if>
         </where>
     </sql>