diff --git a/src/main/java/com/zhiyun/zhiyun03/Zhiyun03Application.java b/src/main/java/com/zhiyun/zhiyun03/Zhiyun03Application.java
index 3b3da6b..aa812b3 100644
--- a/src/main/java/com/zhiyun/zhiyun03/Zhiyun03Application.java
+++ b/src/main/java/com/zhiyun/zhiyun03/Zhiyun03Application.java
@@ -6,7 +6,7 @@ import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.context.annotation.ComponentScan;
 
 @SpringBootApplication
-@MapperScan("com.zhiyun.**.dao")
+
 public class Zhiyun03Application {
 
     public static void main(String[] args) {
diff --git a/src/main/java/com/zhiyun/zhiyun03/course/controller/CourseController.java b/src/main/java/com/zhiyun/zhiyun03/course/controller/CourseController.java
index 0ddb10e..7ec77fe 100644
--- a/src/main/java/com/zhiyun/zhiyun03/course/controller/CourseController.java
+++ b/src/main/java/com/zhiyun/zhiyun03/course/controller/CourseController.java
@@ -6,6 +6,7 @@ import com.zhiyun.zhiyun03.course.common.JsonResult;
 import com.zhiyun.zhiyun03.course.entity.Course;
 
 import com.zhiyun.zhiyun03.course.service.CourseService;
+import com.zhiyun.zhiyun03.course.vo.CourseVo;
 import io.swagger.annotations.Api;
 import io.swagger.annotations.ApiOperation;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -24,49 +25,41 @@ public class CourseController {
 
     @ApiOperation("查询课程")
     @GetMapping("/selectAll")
-    public JsonResult selectAll(@RequestParam(value = "page", required = false,defaultValue = "1") Integer pageNum,
-                                @RequestParam(value = "limit", required = false,defaultValue = "1") Integer pageSize){
+    public List<CourseVo> queryCourse(){
 
-        PageHelper.startPage(pageNum,pageSize);
-       List<Course>  courseList = courseService.selectAll();
-
-        PageInfo<Course> coursePageInfo = new PageInfo<>();
-
-        JsonResult jsonResult = JsonResult.ok();
-        jsonResult.setData(coursePageInfo.getList());
-        jsonResult.setCount(coursePageInfo.getTotal());
-        return jsonResult;
+        List<CourseVo> list = courseService.queryCourse();
+        return list;
     }
 
 
-    @ApiOperation("课程添加")
-    @PostMapping("/add")
-    public JsonResult addCourse(Course course){
-        courseService.addCourse(course);
-        return JsonResult.ok();
-    }
-
-//    @ApiOperation("查询目录")
-//    @PostMapping("/select")
-//    public JsonResult selectDir(Directory directory){
-//        courseService.se(course);
+//    @ApiOperation("课程添加")
+//    @PostMapping("/add")
+//    public JsonResult addCourse(Course course){
+//        courseService.addCourse(course);
 //        return JsonResult.ok();
 //    }
-
-    @ApiOperation("删除课程")
-    @DeleteMapping("delById")
-    public JsonResult delCourseById(Integer id){
-        courseService.delCourseById(id);
-return JsonResult.ok();
-    }
-
-    @ApiOperation("更新课程")
-    @DeleteMapping("updateById")
-    public JsonResult updateById(Course course){
-        courseService.updateById(course);
-        return JsonResult.ok();
-    }
-
+//
+////    @ApiOperation("查询目录")
+////    @PostMapping("/select")
+////    public JsonResult selectDir(Directory directory){
+////        courseService.se(course);
+////        return JsonResult.ok();
+////    }
+//
+//    @ApiOperation("删除课程")
+//    @DeleteMapping("delById")
+//    public JsonResult delCourseById(Integer id){
+//        courseService.delCourseById(id);
+//return JsonResult.ok();
+//    }
+//
+//    @ApiOperation("更新课程")
+//    @DeleteMapping("updateById")
+//    public JsonResult updateById(Course course){
+//        courseService.updateById(course);
+//        return JsonResult.ok();
+//    }
+//
 
 
 
diff --git a/src/main/java/com/zhiyun/zhiyun03/course/mapper/CourseMapper.java b/src/main/java/com/zhiyun/zhiyun03/course/mapper/CourseMapper.java
new file mode 100644
index 0000000..38c326f
--- /dev/null
+++ b/src/main/java/com/zhiyun/zhiyun03/course/mapper/CourseMapper.java
@@ -0,0 +1,9 @@
+package com.zhiyun.zhiyun03.course.mapper;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import com.zhiyun.zhiyun03.course.entity.Course;
+import org.apache.ibatis.annotations.Mapper;
+
+@Mapper
+public interface CourseMapper extends BaseMapper<Course> {
+}
diff --git a/src/main/java/com/zhiyun/zhiyun03/course/service/CourseService.java b/src/main/java/com/zhiyun/zhiyun03/course/service/CourseService.java
index dc3b083..c68e712 100644
--- a/src/main/java/com/zhiyun/zhiyun03/course/service/CourseService.java
+++ b/src/main/java/com/zhiyun/zhiyun03/course/service/CourseService.java
@@ -1,15 +1,17 @@
 package com.zhiyun.zhiyun03.course.service;
 
 import com.zhiyun.zhiyun03.course.entity.Course;
+import com.zhiyun.zhiyun03.course.vo.CourseVo;
 
 import java.util.List;
 
 public interface CourseService {
-    public void addCourse(Course course);
+//    public void addCourse(Course course);
+//
+//    void delCourseById(Integer id);
+//
+//    void updateById(Course course);
 
-    void delCourseById(Integer id);
 
-    void updateById(Course course);
-
-    List<Course> selectAll();
+    List<CourseVo> queryCourse();
 }
diff --git a/src/main/java/com/zhiyun/zhiyun03/course/service/impl/CourseServiceImpl.java b/src/main/java/com/zhiyun/zhiyun03/course/service/impl/CourseServiceImpl.java
index cbb3b52..ef36776 100644
--- a/src/main/java/com/zhiyun/zhiyun03/course/service/impl/CourseServiceImpl.java
+++ b/src/main/java/com/zhiyun/zhiyun03/course/service/impl/CourseServiceImpl.java
@@ -1,36 +1,76 @@
 package com.zhiyun.zhiyun03.course.service.impl;
 
-import com.zhiyun.zhiyun03.course.dao.CourseDAO;
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import com.zhiyun.zhiyun03.application.entity.Directory;
+import com.zhiyun.zhiyun03.application.mapper.DirectoryMapper;
+import com.zhiyun.zhiyun03.application.util.ConvertUtil;
 import com.zhiyun.zhiyun03.course.entity.Course;
 import com.zhiyun.zhiyun03.course.service.CourseService;
-import org.springframework.beans.factory.annotation.Autowired;
+import com.zhiyun.zhiyun03.course.vo.CourseVo;
+import com.zhiyun.zhiyun03.course.mapper.CourseMapper;
 import org.springframework.stereotype.Service;
 
+import javax.annotation.Resource;
 import java.util.List;
 
 @Service
-public class CourseServiceImpl implements CourseService {
+public class CourseServiceImpl extends ServiceImpl<CourseMapper,Course> implements CourseService {
 
-    @Autowired
-    private CourseDAO courseDAO;
+    @Resource
+    private CourseMapper courseMapper;
 
-    @Override
-    public void addCourse(Course course) {
-        courseDAO.insert(course);
-    }
+    @Resource
+    DirectoryMapper directoryMapper;
 
-    @Override
-    public void delCourseById(Integer id) {
-        courseDAO.deleteByPrimaryKey(id);
-    }
 
-    @Override
-    public void updateById(Course course) {
-        courseDAO.updateByPrimaryKey(course);
-    }
 
+    /**
+     * 应用中心查询
+     */
     @Override
-    public List<Course> selectAll() {
-        return courseDAO.selectAll();
+    public List<CourseVo> queryCourse() {
+        QueryWrapper<Course> qwa=new QueryWrapper<>();
+        List<Course> courses = courseMapper.selectList(qwa);
+        QueryWrapper<Directory> qwd=new QueryWrapper<>();
+        List<Directory> directories = directoryMapper.selectList(qwd);
+        ConvertUtil convertUtil=new ConvertUtil();
+        List<CourseVo> applicationVos = convertUtil.entityToVoList(courses, CourseVo.class);
+
+        for (int i = 0; i < courses.size(); i++) {
+            for (int j = 0; j <directories.size() ; j++) {
+                if(courses.get(i).getDirId()==directories.get(i).getId()){
+                    applicationVos.get(i).setDirName(directories.get(i).getDirName());
+                }
+            }
+        }
+        return applicationVos;
     }
+
+
+
+//    @Override
+//    public void addCourse(Course course) {
+//        courseDAO.insert(course);
+//    }
+//
+//    @Override
+//    public void delCourseById(Integer id) {
+//        courseDAO.deleteByPrimaryKey(id);
+//    }
+//
+//    @Override
+//    public void updateById(Course course) {
+//        courseDAO.updateByPrimaryKey(course);
+//    }
+//
+//    @Override
+//    public List<CourseVo> queryCourse() {
+//        return null;
+//    }
+//
+//    @Override
+//    public List<Course> selectAll() {
+//        return courseDAO.selectAll();
+//    }
 }
diff --git a/src/main/java/com/zhiyun/zhiyun03/course/vo/CourseVo.java b/src/main/java/com/zhiyun/zhiyun03/course/vo/CourseVo.java
new file mode 100644
index 0000000..19c222a
--- /dev/null
+++ b/src/main/java/com/zhiyun/zhiyun03/course/vo/CourseVo.java
@@ -0,0 +1,20 @@
+package com.zhiyun.zhiyun03.course.vo;
+
+import com.baomidou.mybatisplus.annotation.TableId;
+import lombok.Data;
+
+@Data
+public class CourseVo{
+    @TableId
+    private int id;
+
+    private String courseName;
+
+    private String courseBrief;
+
+    private String courseUrl;
+
+    private String dirName;
+
+    private String appIcon;
+}
diff --git a/src/main/java/com/zhiyun/zhiyun03/directory/controller/DirectoryController.java b/src/main/java/com/zhiyun/zhiyun03/directory/controller/DirectoryController.java
deleted file mode 100644
index 83059a3..0000000
--- a/src/main/java/com/zhiyun/zhiyun03/directory/controller/DirectoryController.java
+++ /dev/null
@@ -1,33 +0,0 @@
-package com.zhiyun.zhiyun03.directory.controller;
-
-import com.zhiyun.zhiyun03.course.common.JsonResult;
-import com.zhiyun.zhiyun03.directory.entity.Directory;
-import com.zhiyun.zhiyun03.directory.servcie.DirectoryService;
-import io.swagger.annotations.Api;
-import io.swagger.annotations.ApiOperation;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.web.bind.annotation.PostMapping;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
-
-@Api("目录")
-@RestController
-@RequestMapping("/api/directory")
-public class DirectoryController {
-    @Autowired
-    private DirectoryService directoryService;
-
-    @ApiOperation("添加目录")
-    @PostMapping("/add")
-    public JsonResult addDirectory(Directory directory){
-        directoryService.addDirectory(directory);
-        return JsonResult.ok();
-    }
-
-
-
-
-
-
-
-}
diff --git a/src/main/java/com/zhiyun/zhiyun03/directory/servcie/DirectoryService.java b/src/main/java/com/zhiyun/zhiyun03/directory/servcie/DirectoryService.java
deleted file mode 100644
index 5eb61ae..0000000
--- a/src/main/java/com/zhiyun/zhiyun03/directory/servcie/DirectoryService.java
+++ /dev/null
@@ -1,7 +0,0 @@
-package com.zhiyun.zhiyun03.directory.servcie;
-
-import com.zhiyun.zhiyun03.directory.entity.Directory;
-
-public interface DirectoryService {
-    void addDirectory(Directory directory);
-}
diff --git a/src/main/java/com/zhiyun/zhiyun03/directory/servcie/impl/DirectoryServiceImpl.java b/src/main/java/com/zhiyun/zhiyun03/directory/servcie/impl/DirectoryServiceImpl.java
deleted file mode 100644
index e10e1ff..0000000
--- a/src/main/java/com/zhiyun/zhiyun03/directory/servcie/impl/DirectoryServiceImpl.java
+++ /dev/null
@@ -1,19 +0,0 @@
-package com.zhiyun.zhiyun03.directory.servcie.impl;
-
-import com.zhiyun.zhiyun03.course.dao.DirectoryDAO;
-import com.zhiyun.zhiyun03.directory.entity.Directory;
-import com.zhiyun.zhiyun03.directory.servcie.DirectoryService;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.stereotype.Service;
-
-@Service
-public class DirectoryServiceImpl implements DirectoryService {
-
-    @Autowired
-    private DirectoryDAO directoryDAO;
-
-    @Override
-    public void addDirectory(Directory directory) {
-        directoryDAO.insert(directory);
-    }
-}
diff --git a/src/main/resources/mapper/DirectoryMapper.xml b/src/main/resources/mapper/DirectoryMapper.xml
new file mode 100644
index 0000000..8055e7d
--- /dev/null
+++ b/src/main/resources/mapper/DirectoryMapper.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="com.zhiyun.zhiyun03.application.mapper.DirectoryMapper">
+
+</mapper>
\ No newline at end of file
diff --git a/src/main/resources/mapper/directory/DirectoryDAO.xml b/src/main/resources/mapper/directory/DirectoryDAO.xml
deleted file mode 100644
index 50e1e0e..0000000
--- a/src/main/resources/mapper/directory/DirectoryDAO.xml
+++ /dev/null
@@ -1,63 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
-<mapper namespace="com.zhiyun.zhiyun03.course.dao.DirectoryDAO">
-  <resultMap id="BaseResultMap" type="com.zhiyun.zhiyun03.directory.entity.Directory">
-    <id column="id" jdbcType="INTEGER" property="id" />
-    <result column="dir_name" jdbcType="VARCHAR" property="dirName" />
-    <result column="dir_img" jdbcType="VARCHAR" property="dirImg" />
-  </resultMap>
-  <sql id="Base_Column_List">
-    id, dir_name, dir_img
-  </sql>
-  <select id="selectByPrimaryKey" parameterType="java.lang.Integer" resultMap="BaseResultMap">
-    select 
-    <include refid="Base_Column_List" />
-    from directory
-    where id = #{id,jdbcType=INTEGER}
-  </select>
-  <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer">
-    delete from directory
-    where id = #{id,jdbcType=INTEGER}
-  </delete>
-  <insert id="insert" keyColumn="id" keyProperty="id" parameterType="com.zhiyun.zhiyun03.directory.entity.Directory" useGeneratedKeys="true">
-    insert into directory (id,dir_name, dir_img)
-    values (#{id},#{dirName,jdbcType=VARCHAR}, #{dirImg,jdbcType=VARCHAR})
-  </insert>
-  <insert id="insertSelective" keyColumn="id" keyProperty="id" parameterType="com.zhiyun.zhiyun03.directory.entity.Directory" useGeneratedKeys="true">
-    insert into directory
-    <trim prefix="(" suffix=")" suffixOverrides=",">
-      <if test="dirName != null">
-        dir_name,
-      </if>
-      <if test="dirImg != null">
-        dir_img,
-      </if>
-    </trim>
-    <trim prefix="values (" suffix=")" suffixOverrides=",">
-      <if test="dirName != null">
-        #{dirName,jdbcType=VARCHAR},
-      </if>
-      <if test="dirImg != null">
-        #{dirImg,jdbcType=VARCHAR},
-      </if>
-    </trim>
-  </insert>
-  <update id="updateByPrimaryKeySelective" parameterType="com.zhiyun.zhiyun03.directory.entity.Directory">
-    update directory
-    <set>
-      <if test="dirName != null">
-        dir_name = #{dirName,jdbcType=VARCHAR},
-      </if>
-      <if test="dirImg != null">
-        dir_img = #{dirImg,jdbcType=VARCHAR},
-      </if>
-    </set>
-    where id = #{id,jdbcType=INTEGER}
-  </update>
-  <update id="updateByPrimaryKey" parameterType="com.zhiyun.zhiyun03.directory.entity.Directory">
-    update directory
-    set dir_name = #{dirName,jdbcType=VARCHAR},
-      dir_img = #{dirImg,jdbcType=VARCHAR}
-    where id = #{id,jdbcType=INTEGER}
-  </update>
-</mapper>
\ No newline at end of file