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谷粒学院——Day08【课程发布-课程大纲和课程发布】

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富文本编辑器Tinymce

一、Tinymce可视化编辑器

参考
https://panjiachen.gitee.io/vue-element-admin/#/components/tinymce
https://panjiachen.gitee.io/vue-element-admin/#/example/create
 

二、组件初始化

Tinymce是一个传统javascript插件,默认不能用于Vue.js因此需要做一些特殊的整合步骤。

1. 复制脚本库

将脚本库复制到项目的static目录下(在vue-element-admin-master的static路径下)。

2. 配置html变量

build/webpack.dev.conf.js 中添加配置
使在html页面中可是使用这里定义的BASE_URL变量

new HtmlWebpackPlugin({
    ......,
    templateParameters: {
    	BASE_URL: config.dev.assetsPublicPath + config.dev.assetsSubDirectory
    }
})

3. 引入js脚本

/index.html 中引入js脚本

<script src=<%= BASE_URL %>/tinymce4.7.5/tinymce.min.js></script>
<script src=<%= BASE_URL %>/tinymce4.7.5/langs/zh_CN.js></script>

 

三、组件引入

为了让Tinymce能用于Vue.js项目,vue-element-admin-master对Tinymce进行了封装,下面我们将它引入到我们的课程信息页面。

1. 复制组件

src/components/Tinymce

2. 引入组件

课程信息组件中引入 Tinymce

//引入Tinymce富文本编辑器组件
import Tinymce from '@/components/Tinymce';

export default {
    ....
  components: { Tinymce },
}

3. 组件模板

      <!-- 课程简介-->
      <el-form-item label="课程简介">
        <tinymce :height="300" v-model="courseInfo.description"/>
      </el-form-item>

4. 组件样式

info.vue 文件的最后添加如下代码,调整上传图片按钮的高度。

<style scoped>
  .tinymce-container {
  line-height: 29px;
  }
</style>

5. 效果测试


 

四、测试

  • 图片的base64编码
    Tinymce中的图片上传功能直接存储的是图片的base64编码,因此无需图片服务器
     

  • 后台报错

     

  • 修改数据库description字段类型

     

  • 添加的数据中发现一级分类没有值

     
    eduservice.entity.vo.CourseInfo 中添加一级分类属性。
    要求跟前端一级分类属性的名称一样,否则获取不到数据。

     @ApiModelProperty(value = "一级分类ID")
        private String subjectParentId;
    
  • 重启服务,再次进行测试,添加的课程就有对应的一级分类对应的id值

     


课程大纲列表显示

一、后端实现

1. 实体类

创建 chapter 包,在此包下创建 ChapterVoVideoVo 实体类。
chapterVo:

@Data
public class ChapterVo {
    private static final long serialVersionUID = 1L;

    private String id;

    private String title;

    //表示小节
    private List<VideoVo> children = new ArrayList<VideoVo>();

}

VideoVo:

@Data
public class VideoVo {
    private static final long serialVersionUID = 1L;

    private String id;

    private String title;

    private Boolean free;
}

2. controller

创建 EduChapterController 类:

@RestController
@CrossOrigin
@RequestMapping("/eduservice/chapter")
public class EduChapterController {

    @Autowired
    private EduChapterService eduChapterService;

    // 课程大纲列表,根据课程id进行查询
    @GetMapping("getChapterVideo/{courseId}")
    public R getChapterVideo(@PathVariable String courseId) {
        List<ChapterVo> list = eduChapterService.getChapterVideoByCourseId(courseId);
        return  R.ok().data("allChapterVideo", list);
    }

}

 

3. service

EduChapterService 接口:

public interface EduChapterService extends IService<EduChapter> {

    // 课程大纲列表,根据课程id进行查询
    List<ChapterVo> getChapterVideoByCourseId(String courseId);
}

EduChapterServiceImpl 实现类:

@Service
public class EduChapterServiceImpl extends ServiceImpl<EduChapterMapper, EduChapter> implements EduChapterService {

    @Autowired
    private EduVideoService videoService;

    // 课程大纲列表,根据课程id进行查询
    @Override
    public List<ChapterVo> getChapterVideoByCourseId(String courseId) {

        // 1. 根据课程id查询课程里面所有的章节
        QueryWrapper<EduChapter> wrapperChapter = new QueryWrapper<>();
        wrapperChapter.eq("course_id", courseId);
        List<EduChapter> eduChapterList = baseMapper.selectList(wrapperChapter);

        // 2. 根据课程id查询课程里面所有的小节
        QueryWrapper<EduVideo> wrapperVideo = new QueryWrapper<>();
        wrapperVideo.eq("course_id", courseId);
        List<EduVideo> eduVideoList = videoService.list(wrapperVideo);

        // 创建list集合,用于最终封装数据
        List<ChapterVo> finalList = new ArrayList<>();

        // 3. 遍历查询章节list集合进行封装
        //遍历查询章节list集合
        for (int i = 0; i < eduChapterList.size(); i ++) {
            // 每个章节
            EduChapter eduChapter = eduChapterList.get(i);
            // eduChapter 对象值复制到ChapterVo里面
            ChapterVo chapterVo = new ChapterVo();
            BeanUtils.copyProperties(eduChapter, chapterVo);
            // 把chapterVo放到最终list集合
            finalList.add(chapterVo);

            // 创建集合,用于封装章节的小节
            List<VideoVo> videoList  = new ArrayList<>();

            // 4. 遍历查询小节list集合,进行封装
            for (int j = 0; j < eduVideoList.size(); j++) {
                // 得到每个小节
                EduVideo eduVideo = eduVideoList.get(j);
                // 判断:小节里面chapterId和章节里面id是否一样
                if (eduVideo.getChapterId().equals(eduChapter.getId())) {
                    // 进行封装
                    VideoVo videoVo = new VideoVo();
                    BeanUtils.copyProperties(eduVideo, videoVo);
                    // 放到小节封装集合
                    videoList.add(videoVo);
                }
            }
            // 把封装之后小节list集合,放到章节对象里面
            chapterVo.setChildren(videoList);
        }

        return finalList;
    }
}

 

4. Swagger测试


 
测试结果如下:

// Response Body
{
  "success": true,
  "code": 20000,
  "message": "成功",
  "data": {
    "allChapterVideo": [
      {
        "id": "1",
        "title": "第一章:HTML",
        "children": [
          {
            "id": "17",
            "title": "第一节:Java简介",
            "free": null
          },
          {
            "id": "19",
            "title": "第三节:String类",
            "free": null
          }
        ]
      },
      {
        "id": "2",
        "title": "第二章:CSS",
        "children": [
          {
            "id": "18",
            "title": "第二节:表达式和赋值语句",
            "free": null
          },
          {
            "id": "20",
            "title": "第四节:程序风格",
            "free": null
          }
        ]
      },
      {
        "id": "32",
        "title": "第二章:控制台输入和输出",
        "children": [
          {
            "id": "1182499307429339137",
            "title": "第一节",
            "free": null
          }
        ]
      },
      {
        "id": "44",
        "title": "第三章:控制流",
        "children": []
      }
    ]
  }
}

 

二、前端实现

1. 定义api

api/edu/chapter.js

import request from '@/utils/request' //引入已经封装好的axios 和 拦截器

export default{
    //根据课程id获取章节和小节数据列表
    getAllChapterVideo(courseId){
        return request({
            url:`/eduservice/chapter/getChapterVideo/${courseId}`,
            method: 'get',
        })
    },
}

2. 定义组件脚本

  • 引入api脚本方法

    import chapter from '@/api/edu/chapter'
    
  • 定义data

    data() {
        return {
          .........
          chapterVideoList:[]
        };
      },
    
  • 定义相关methods获取章节和课时列表

    methods: {
        // 根据课程id查询对应的课程章节和小节
        getChapterVideo() {
            chapter.getAllChapterVideo(this.courseId) 
                .then(response => {
                    this.chapterVideoList = response.data.allChapterVideo
                })
        },
    
  • 定义created方法

    created() {
            // 获取路由的id值
            if(this.$route.params && this.$route.params.id) {
                this.courseId = this.$route.params.id
        }
            // 根据课程id查询对应的课程章节和小节
            this.getChapterVideo()
      },
    

3. 定义组件模板

<template>
  <div class="app-container">
    <h2 style="text-align: center">发布新课程</h2>
    <el-steps :active="2" process-status="wait" align-center style="margin-bottom: 40px;">
      <el-step title="填写课程基本信息" />
      <el-step title="创建课程大纲" />
      <el-step title="最终发布" />
    </el-steps>
    
    <!-- 章节 -->
    <ul class="chanpterList">
      <li v-for="chapter in chapterVideoList" :key="chapter.id">
        <p>
          {
  { chapter.title }}
        </p>

        <!-- 小节 -->
        <ul class="chanpterList videoList">
          <li v-for="video in chapter.children" :key="video.id">
            <p>
                {
  { video.title }}
            </p>
          </li>
        </ul>
      </li>
    
    </ul>


    <el-form label-width="120px">
      <el-form-item>
        <el-button @click="previous">上一步</el-button>
        <el-button :disabled="saveBtnDisabled" type="primary" @click="next"
          >下一步</el-button
        >
      </el-form-item>
    </el-form>
  </div>
</template>

 

4. 定义样式

将样式的定义放在页面的最后。
scope 表示这里定义的样式只在当前页面范围内生效,不会污染到其他的页面。

<style scoped>
.chanpterList{
    position: relative;
    list-style: none;
    margin: 0;
    padding: 0;
}
.chanpterList li{
  position: relative;
}
.chanpterList p{
  float: left;
  font-size: 20px;
  margin: 10px 0;
  padding: 10px;
  height: 70px;
  line-height: 50px;
  width: 100%;
  border: 1px solid #DDD;
}
.chanpterList .acts {
    float: right;
  font-size: 14px;
}

.videoList{
  padding-left: 50px;
}
.videoList p{
  float: left;
  font-size: 14px;
  margin: 10px 0;
  padding: 10px;
  height: 50px;
  line-height: 30px;
  width: 100%;
  border: 1px dotted #DDD;
}

</style>


 

5. 测试


 


修改课程信息

一、后端实现

1. 根据课程id查询课程基本信息

  1. EduCourseController

      // 根据课程id查询课程基本信息
        @GetMapping("getCourseInfo/{courseId}")
        public R getCourseInfo(@PathVariable String courseId) {
            CourseInfoVo courseInfoVo = courseService.getCourseInfo(courseId);
            return R.ok().data("courseInfoVo", courseInfoVo);
        }
    
  2. EduCourseService

    // 根据课程id查询课程基本信息
        CourseInfoVo getCourseInfo(String courseId);
    
  3. EduCourseServiceImpl

    // 根据课程id查询课程基本信息
        @Override
        public CourseInfoVo getCourseInfo(String courseId) {
    
            // 查询课程表
            EduCourse eduCourse = baseMapper.selectById(courseId);
            CourseInfoVo courseInfoVo = new CourseInfoVo();
            BeanUtils.copyProperties(eduCourse, courseInfoVo);
    
            // 查询描述表
            EduCourseDescription courseDescription = courseDescriptionService.getById(courseId);
            courseInfoVo.setDescription(courseDescription.getDescription());
    
            return courseInfoVo;
        }
    

2. 修改课程信息

  1. EduCourseController

    // 修改课程信息
        @PostMapping("updateCourseInfo")
        public R updateCourseInfo(@RequestBody CourseInfoVo courseInfoVo) {
            courseService.updateCourseInfo(courseInfoVo);
            return R.ok();
        }
    
  2. EduCourseService

    // 修改课程信息
        void updateCourseInfo(CourseInfoVo courseInfoVo);
    
  3. EduCourseServiceImpl

     // 修改课程信息
        @Override
        public void updateCourseInfo(CourseInfoVo courseInfoVo) {
            // 1.修改课程表
            EduCourse eduCourse = new EduCourse();
            BeanUtils.copyProperties(courseInfoVo, eduCourse);
            int update = baseMapper.updateById(eduCourse);
            if (update == 0) {
                throw new GuliException(20001, "修改课程信息失败");
            }
    
    
            // 2.修改描述表
            EduCourseDescription description = new EduCourseDescription();
            description.setId(courseInfoVo.getId());
            description.setDescription(courseInfoVo.getDescription());
            courseDescriptionService.updateById(description);
    
        }
    
       

二、前端实现

  • 定义api
    src\api\edu\course.js

     //根据课程id 查询课程基本信息
            getCourseInfoId(id){
                return request({
                    url:`/eduservice/course/getCourseInfo/${id}`,
                    method: 'get',
                })
            },
    
            //修改课程信息
            updateCourseInfo(courseInfo){
                return request({
                    url:"/eduservice/course/updateCourseInfo",
                    method: 'post',
                    data: courseInfo
                })
            }
    
       
  • 修改chapter页面跳转路径

     //跳转到上一步
        previous() {
          this.$router.push({ path: "/course/info/"+this.courseId});
        },
        next() {
          //跳转到第三步
          this.$router.push({ path: "/course/publish/"+this.courseId});
        },
    
  • info页面 data

      data() {
        return {
    		...
          courseId: "",
        };
      }
    
    
  • info页面 methods

     methods: {
        // 根据课程id查询
        getInfo() {
            course.getCourseInfoId(this.courseId) 
              .then(response => {
                this.courseInfo = response.data.courseInfoVo
              })
        },
        .....
    }
    
  • info页面 created()

    created(){
            // 获取路由id值
            if (this.$route.params && this.$route.params.id) {
              this.courseId = this.$route.params.id
              // 调用根据id查询课程的方法
              this.getInfo()
            }
    		....
        },
    
    
  • 测试

     

  • 上面测试,二级分类中的数据显示出现了问题

    created(){
            // 获取路由id值
            if (this.$route.params && this.$route.params.id) {
              this.courseId = this.$route.params.id
              // 调用根据id查询课程的方法
              this.getInfo()
            } else {
              // 初始化所有讲师
              this.getListTeacher()
              // 初始化一级分类
              this.getOneSubject()
            } 
        },
    
    

     

     getInfo() {
            course.getCourseInfoId(this.courseId) 
              .then(response => {
                // 在courseInfo课程信息基本信息,包含一级分类id 和 二级分类id
                this.courseInfo = response.data.courseInfoVo
                // 1. 查询所有的分类,包含一级和二级
                subject.getSubjectList()
                  .then(response => {
                    // 2.获取所有一级分类
                    this.subjectOneList = response.data.list
    
                    //3. 把所有的一级分类数组进行遍历
                    for (var i=0;i<this.subjectOneList.length;i++) {
                      //获取每一个一级分类
                      var oneSubject = this.subjectOneList[i]
                      // 比较当前courseInfo里面一级分类id和所有一级 分类id
                      if(this.courseInfo.subjectParentId == oneSubject.id) {
                        //获取一级分类所有的二级分类
                        this.subjectTwoList=oneSubject.children
                      }
                    }
                  })
                  //初始化所有讲师
                  this.getListTeacher()
    
              })
        },
    
       

 

  • 还有一个问题,就是回显数据后,再点击添加课程,数据还在,应该是清空数据
    添加监听器,监听路由,如果路由变化,就将courseInfo的数据清空:

      watch: {
        $route(to, from) {
          //路由变化方式,当路由发送变化,方法就执行
          console.log("watch $route");
          this.courseInfo={}
        },
      }
    
    
  • 实现修改功能
    src\views\edu\course\info.vue

        //添加课程
        //添加课程
    addCourse() {
      course.addCourseInfo(this.courseInfo).then(response => {
        this.$message({
          message: "添加课程信息成功",
          type: "success",
        });
        //跳转到第二步,并带着这个课程生成的id
        this.$router.push({ path: "/course/chapter/" + resp.data.courseId });
      });
    },
    
    //修改课程
    updateCourse() {
      course.updateCourseInfo(this.courseInfo).then(response => {
        this.$message({
          message: "修改课程信息成功",
          type: "success",
        });
        //跳转到第二步,并带着这个课程生成的id
        this.$router.push({ path: "/course/chapter/" + this.courseId });
      });
    },
    
    //判断是修改还是新增
    saveOrUpdate() {
      //判断courseInfo中是否有id值
      if (this.courseInfo.id) {
        //有id值,为修改
        this.updateCourse();
      } else {
        //没id值,为添加
        this.addCourse();
      }
    }
    
    
       

 


课程章节添加、修改、删除功能

一、后端实现

  • EduChapterController:

    // 添加章节
        @PostMapping("addChapter")
        public R addChapter(@RequestBody EduChapter eduChapter) {
            eduChapterService.save(eduChapter);
            return R.ok();
        }
    
        // 根据章节id查询
        @GetMapping("getChapterInfo/{chapterId")
        public R getChapterInfo(@PathVariable String chapterId) {
            EduChapter eduChapter = eduChapterService.getById(chapterId);
            return R.ok().data("chapter", eduChapter);
        }
    
        // 修改章节
        @PostMapping("updateChapter")
        public R updateChapter(@RequestBody EduChapter eduChapter) {
            eduChapterService.updateById(eduChapter);
            return R.ok();
        }
    
        // 删除的方法
        @DeleteMapping("{chapterId}")
        public R deleteChapter(@RequestBody String chapterId) {
            boolean flag = eduChapterService.deleteChapter(chapterId);
            if (flag) {
                return R.ok();
            } else {
                return R.error();
            }
    
        }
    
       
  • EduChapterService:

    // 删除的方法
        boolean deleteChapter(String chapterId);
    
  • EduChapterServiceImpl:

    // 删除的方法
        @Override
        public boolean deleteChapter(String chapterId) {
            // 根据chapterId章节id 查询小节表,如果查询到数据则不进行删除
            QueryWrapper<EduVideo> wrapper = new QueryWrapper<>();
            wrapper.eq("chapter_id", chapterId);
            int count = videoService.count(wrapper);
            // 判断
            if (count > 0) { // 查询出小节,不进行删除
                throw new GuliException(20001, "不能删除");
            } else { // 不能查询数据,进行删除
                // 删除章节
                int result = baseMapper.deleteById(chapterId);
                return result > 0;
            }
        }
    
       

二、前端实现

1. 课程添加功能

  • 定义api

    //添加章节
            addChapter(chapter) {
                return request({
                    url: `/eduservice/chapter/addChapter`,
                    method: `post`,
                    data: chapter
                })
            },
            //根据id查询章节
            getChapter(chapterID) {
                return request({
                    url: `/eduservice/chapter/getChapterInfo/${chapterID}`,
                    method: `get`,
                })
            },
            //修改章节
            updateChapter(chapter) {
                return request({
                    url: `/eduservice/chapter/updateChapter`,
                    method: `post`,
                    data: chapter
                })
            },
            //删除章节
            deleteChapter(chapterID) {
                return request({
                    url: `/eduservice/chapter/${chapterID}`,
                    method: `delete`,
                })
            }
    
       
  • 引入api
    import chapter from '@/api/edu/chapter'

  • methods方法

    methods: {
    	//添加章节
        saveChapter() {
          //设置课程id到chapter对象中
          this.chapter.courseId = this.courseId
          chapter.addChapter(this.chapter).then((resp) => {
            //关闭弹框
            this.dialogChapterFormVisible = false;
            //提示信息
            this.$message({
              message: "添加章节成功",
              type: "success",
            });
            //刷新页面
            this.getChapterVideoByCourseId()
          });
        },
        saveOrUpdate() {
              this.saveChapter()
            }
    }
    
    
       
  • 测试

     

  • 设置弹出表单时,清空数据

    <el-button type="text" @click="openChapterDialog()">添加章节</el-button>
    
    openChapterDialog(){
            // 弹框
            this.dialogChapterFormVisible = true
            // 表单数据清空
            this.chapter.title = ''
            this.chapter.sort = 0
        },
    

2. 修改课程功能

  1. template

    <p>
              {
        { chapter.title }}
    
               <span class="acts">
                    <el-button style="" type="text" @click="openEditChapter(chapter.id)">编辑</el-button>
                    <el-button type="text">删除</el-button>
                </span>
    </p>
    
  2. methods方法

    // 修改章节弹框数据回显
        openEditChapter(chapterId) {
            // 弹框
            this.dialogChapterFormVisible = true
            // 调用接口
            chapter.getChapter(chapterId)
                .then(response => {
                    this.chapter = response.data.chapter
                })
        },
    
    
    // 添加章节
        addChapter() {
    
            // 设置课程id到chapter对象里面
            this.chapter.courseId = this.courseId
            chapter.addChapter(this.chapter)
                .then(response => {
                    // 关闭弹框
                    this.dialogChapterFormVisible = false
                    // 提示
                    this.$message({
                    message: "添加章节成功",
                    type: "success",
                 });
                 // 刷新页面
                 this.getChapterVideo()
                })
        },
        // 修改章节的方法
        updateChapter() {
            chapter.updateChapter(this.chapter)
                .then(response => {
                    // 关闭弹框
                    this.dialogChapterFormVisible = false
                    // 提示
                    this.$message({
                    message: "修改章节成功",
                    type: "success",
                 });
                 // 刷新页面
                 this.getChapterVideo()
                })
        },
    
        saveOrUpdate() {
            if(!this.chapter.id) {
                this.addChapter()
            } else {
                this.updateChapter()
            }
            
        },
    
       

3. 删除课程功能

<el-button type="text"  @click="removeChapter(chapter.id)">删除</el-button>
 // 删除章节
       removeChapter(chapterId) {
            this.$confirm('此操作将永久删除课程记录, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).then(() => {  //点击确定,执行then方法
                //调用删除的方法
                chapter.deleteChapter(chapterId)
                    .then(response =>{//删除成功
                    //提示信息
                    this.$message({
                        type: 'success',
                        message: '删除成功!'
                    });
                    // 刷新页面
                    this.getChapterVideo()
                })
            }) //点击取消,执行catch方法
        },

 

 


课程章节小节功能

一、后端实现

  • EduVideoController:

    @RestController
    @CrossOrigin
    @RequestMapping("/eduservice/video")
    public class EduVideoController {
    
        @Autowired
        private EduVideoService videoService;
    
        // 添加小节
        @PostMapping("addVideo")
        public R addVideo(@RequestBody EduVideo eduVideo) {
            videoService.save(eduVideo);
            return  R.ok();
        }
    
        // 删除小节
        @DeleteMapping("{id}")
        public R deleteVideo(@PathVariable String id) {
            videoService.removeById(id);
            return R.ok();
        }
    
        // 根据小节id查询
        @PostMapping("getVideoById/{videoId}")
        public R getVideoById(@PathVariable String videoId) {
            EduVideo eduVideo = videoService.getById(videoId);
            return R.ok().data("video", eduVideo);
        }
    
        // 修改小节
        @PostMapping("/updateVideo")
        public R updateVideo(@PathVariable EduVideo eduVideo) {
            videoService.updateById(eduVideo);
            return R.ok();
        }
    
    
    }
    
       
  • EduVideo:

    @ApiModelProperty(value = "创建时间")
        @TableField(fill = FieldFill.INSERT)
        private Date gmtCreate;
    
        @ApiModelProperty(value = "更新时间")
        @TableField(fill = FieldFill.INSERT_UPDATE)
        private Date gmtModified;
    

二、前端实现

1. 添加小节功能

  • template

    <el-button style="" type="text" @click="openVideo(chapter.id)">添加小节</el-button>
    
     <!-- 添加和修改课时表单 -->
        <el-dialog :visible.sync="dialogVideoFormVisible" title="添加课时">
        <el-form :model="video" label-width="120px">
            <el-form-item label="课时标题">
            <el-input v-model="video.title"/>
            </el-form-item>
            <el-form-item label="课时排序">
            <el-input-number v-model="video.sort" :min="0" controls-position="right"/>
            </el-form-item>
            <el-form-item label="是否免费">
            <el-radio-group v-model="video.free">
                <el-radio :label="true">免费</el-radio>
                <el-radio :label="false">默认</el-radio>
            </el-radio-group>
            </el-form-item>
            <el-form-item label="上传视频">
            <!-- TODO -->
            </el-form-item>
        </el-form>
        <div slot="footer" class="dialog-footer">
            <el-button @click="dialogVideoFormVisible = false">取 消</el-button>
            <el-button :disabled="saveVideoBtnDisabled" type="primary" @click="saveOrUpdateVideo">确 定</el-button>
        </div>
        </el-dialog>
    
    
       
  • 定义api
    src\api\edu\video.js

    import request from '@/utils/request' //引入已经封装好的axios 和 拦截器
    
    export default{
    
            //添加小节
            addVideo(video) {
                return request({
                    url: `/eduservice/video/addVideo`,
                    method: `post`,
                    data: video
                })
            },
    
            //根据id查询小节
            getVideoById(videoId) {
                return request({
                    url: `/eduservice/video/getVideoById/${videoId}`,
                    method: `get`,
                })
            },
    
            //修改小节
            updateVideo(video) {
                return request({
                    url: `/eduservice/video/updateVideo`,
                    method: `post`,
                    data: video
                })
            },
            //删除小节
            deleteChapter(id) {
                return request({
                    url: `/eduservice/video/${id}`,
                    method: `delete`,
                })
            }
        
    }
    
    
       
  • 引入js

    import video from '@/api/edu/video'
    
  • methods方法

    openVideo(chapterId) {
            // 弹框
            this.dialogVideoFormVisible = true
            // 清空数据
            this.video={},
            // 设置章节id
            this.video.chapterId = chapterId
         },
    
    // 添加小节
         addVideo() {
            // 设置课程id
            this.video.courseId = this.courseId
            video.addVideo(this.video)
                .then(response => {
                    // 关闭弹框
                    this.dialogVideoFormVisible = false
                    // 提示
                    this.$message({
                        message: "添加小节成功",
                        type: "success",
                    });
                    // 刷新页面
                    this.getChapterVideo()
                })
         },
    
         saveOrUpdateVideo() {
            this.addVideo()
         },
    
       
  • 测试

     


2. 删除小节功能

  • template

    <span class="acts">
                        <el-button style="" type="text" >编辑</el-button>
                        <el-button type="text"  @click="removeVideo(video.id)">删除</el-button>
                    </span>
    
  • methods方法

     // 删除小节
         removeVideo(id) {
             this.$confirm('此操作将永久删除小节记录, 是否继续?', '提示', {
                    confirmButtonText: '确定',
                    cancelButtonText: '取消',
                    type: 'warning'
                }).then(() => {  //点击确定,执行then方法
                    //调用删除的方法
                    video.deleteChapter(id)
                        .then(response =>{//删除成功
                        //提示信息
                        this.$message({
                            type: 'success',
                            message: '删除成功!'
                        });
                        // 刷新页面
                        this.getChapterVideo()
                    })
                }) //点击取消,执行catch方法
         },
    
       
  • 测试

     


3. 修改小节功能

  1. template

    <p>
                    {
        { video.title }}
                    <span class="acts">
                        <el-button style="" type="text" @click="openEditVideo(video.id)">编辑</el-button>
                        <el-button type="text"  @click="removeVideo(video.id)">删除</el-button>
                    </span>
     </p>
    
  2. methods方法

    //修改小节表单回显
        openEditVideo(videoId) {
            // 弹框
            this.dialogVideoFormVisible = true
            // 调用接口
            video.getVideoById(videoId)
                .then(response => {
                    this.video = response.data.video
                })
        },
    
     // 添加小节
         addVideo() {
            // 设置课程id
            this.video.courseId = this.courseId
            video.addVideo(this.video)
                .then(response => {
                    // 关闭弹框
                    this.dialogVideoFormVisible = false
                    // 提示
                    this.$message({
                        message: "添加小节成功",
                        type: "success",
                    });
                    // 刷新页面
                    this.getChapterVideo()
                })
         },
    
    
        // 修改小节
        updateVideoById(videoId) {
    
            video.updateVideo(this.video)
                .then(response => {
                    // 关闭弹框
                    this.dialogVideoFormVisible = false
                    // 提示
                    this.$message({
                        message: "修改小节成功",
                        type: "success",
                    });
                    // 刷新页面
                    this.getChapterVideo()
                })
        },
        
         saveOrUpdateVideo() {
            if(!this.video.id) {
                this.addVideo()
            } else {
                this.updateVideoById()
            }
         },
    
       
  • 测试

 


课程最终发布

一、后端实现

  • CoursePublishVo

    @ApiModel(value = "课程发布信息")
    @Data
    public class CoursePublishVo implements Serializable {
        private static final long serialVersionUID = 1L;
    
        private String id; //课程id
    
        private String title; //课程名称
    
        private String cover; //封面
    
        private Integer lessonNum;//课时数
    
        private String subjectLevelOne; //一级分类
    
        private String subjectLevelTwo; //二级分类
    
        private String teacherName; //讲师名称
    
        private String price; //价格 ,只用于显示
    }
    
       
  • EduCourseController

    // 根据课程id查询课程确认信息
        @GetMapping("getPublishCourseInfo/{id}")
        public R getPublishCourseInfo(@PathVariable String id) {
            CoursePublishVo coursePublishVo = courseService.publishCourseInfo(id);
            return R.ok().data("publishCourse", coursePublishVo);
        }
    
  • EduCourseMapper

    public interface EduCourseMapper extends BaseMapper<EduCourse> {
    
        public CoursePublishVo getPublishCourseInfo(String courseId);
    }
    
  • EduCourseMapper.xml

    <?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.atguigu.eduservice.mapper.EduCourseMapper">
    
        <!--sql语句:根据课程id查询课程确认信息-->
        <select id="getPublishCourseInfo" resultType="com.atguigu.eduservice.entity.vo.CoursePublishVo">
    
            SELECT
                c.title,
                c.cover,
                c.lesson_num AS lessonNum,
                CONVERT(c.price, DECIMAL(8,2)) AS price,
                s1.title AS subjectLevelOne,
                s2.title AS subjectLevelTwo,
                t.name AS teacherName
            FROM
                edu_course c
                    LEFT JOIN edu_teacher t ON c.teacher_id = t.id
                    LEFT JOIN edu_subject s1 ON c.subject_parent_id = s1.id
                    LEFT JOIN edu_subject s2 ON c.subject_id = s2.id
            WHERE
                c.id = #{id}
    
        </select>
    
    
    </mapper>
    
    
       
  • EduCourseService

        // 根据课程id查询课程确认信息
        CoursePublishVo publishCourseInfo(String id);
    
  • EduCourseServiceImpl

    // 根据课程id查询课程确认信息
        @Override
        public CoursePublishVo publishCourseInfo(String id) {
            // 调用mapper
            return baseMapper.getPublishCourseInfo(id);
        }
    
  • Swagger测试

  • 报错

     

  • 报错原因以及解决方案
    原因: 这个错误是 maven 默认加载机制造成问题, maven 加载的时候,把 java 文件夹里面 .java 类型文件进行编译,如果其他类型文件,不会加载。

    解决方法:

    • 1.复制 xmltarget 目录中
    • 2.把 xml 文件放到 resourses 目录中
    • 3.推荐使用:使用配置实现
      (1) pom.xml
      (2)项目 application.properties
  • service 模块下的 pom.xml 加入配置

        <!-- 项目打包时会将java目录中的*.xml文件也进行打包 -->
        <build>
            <resources>
                <resource>
                    <directory>src/main/java</directory>
                    <includes>
                        <include>**/*.xml</include>
                    </includes>
                    <filtering>false</filtering>
                </resource>
            </resources>
        </build>
    
  • application.properties 下指定 xml 文件夹

    #配置mapper xml文件的路径
    mybatis-plus.mapper-locations=classpath:com/atguigu/eduservice/mapper/xml/*.xml
    
  • 再次进行测试

     

     


二、前端实现

  • 定义api

        // 课程确认信息
            getPublishCourseInfo(id){
                return request({
                    url:"/eduservice/course/getPublishCourseInfo/"+id,
                    method: 'get',
                })
            }
    
  • 导入api方法

    import course from "@/api/edu/course"
    
  • 定义方法

    export default {
        data() {
            return {
            saveBtnDisabled: false, // 保存按钮是否禁用
            courseId: '',
            coursePublish: {}
            };
        },
    
        created() {
        //获取路由中的id值
        if(this.$route.params && this.$route.params.id){
          this.courseId = this.$route.params.id
          //调用接口方法根据课程id查询课程信息
          this.getCoursePublishId()
        }   
      },
    
        methods: {
    
            // 根据课程id查询
            getCoursePublishId() {
                  course.getPublishCourseInfo(this.courseId)
                    .then(response => {
                        this.coursePublish = response.data.publishCourse
                    })
            },
    
           ......
    
        },
    
    };
    
       
  • 组件模板

    <template>
      <div class="app-container">
        <h2 style="text-align: center">发布新课程</h2>
        <el-steps
          :active="3"
          process-status="wait"
          align-center
          style="margin-
    bottom: 40px;"
        >
          <el-step title="填写课程基本信息" />
          <el-step title="创建课程大纲" />
          <el-step title="最终发布" />
        </el-steps>
        <div class="ccInfo">
          <img :src="coursePublish.cover" />
          <div class="main">
            <h2>{
        { coursePublish.title }}</h2>
            <p class="gray">
              <span>共{
        { coursePublish.lessonNum }}课时</span>
            </p>
            <p>
              <span
                >所属分类:{
        { coursePublish.subjectLevelOne }} —
                {
        { coursePublish.subjectLevelTwo }}</span
              >
            </p>
            <p>课程讲师:{
        { coursePublish.teacherName }}</p>
            <h3 class="red">¥{
        { coursePublish.price }}</h3>
          </div>
        </div>
        <el-form label-width="120px">
          <el-form-item>
            <el-button @click="previous">返回修改</el-button>
            <el-button :disabled="saveBtnDisabled" type="primary" @click="publish"
              >发布课程</el-button
            >
          </el-form-item>
        </el-form>
      </div>
    </template>
    
    
       
  • 页面样式

    <style scoped>
    .ccInfo {
      background: #f5f5f5;
      padding: 20px;
      overflow: hidden;
      border: 1px dashed #ddd;
      margin-bottom: 40px;
      position: relative;
    }
    .ccInfo img {
      background: #d6d6d6;
      width: 500px;
      height: 278px;
      display: block;
      float: left;
      border: none;
    }
    .ccInfo .main {
      margin-left: 520px;
    }
    .ccInfo .main h2 {
      font-size: 28px;
      margin-bottom: 30px;
      line-height: 1;
      font-weight: normal;
    }
    .ccInfo .main p {
      margin-bottom: 10px;
      word-wrap: break-word;
      line-height: 24px;
      max-height: 48px;
      overflow: hidden;
    }
    .ccInfo .main p {
      margin-bottom: 10px;
      word-wrap: break-word;
      line-height: 24px;
      max-height: 48px;
      overflow: hidden;
    }
    .ccInfo .main h3 {
      left: 540px;
      bottom: 20px;
      line-height: 1;
      font-size: 28px;
      color: #d32f24;
      font-weight: normal;
      position: absolute;
    }
    </style>
    
       
  • 测试

     


课程最终发布

一、后端实现

EduCourseController

// 课程最终发布
    // 修改课程状态
    @PostMapping("publishCourse/{id}")
    public R publishCourse(@PathVariable String id) {
        EduCourse eduCourse = new EduCourse();
        eduCourse.setId(id);
        eduCourse.setStatus("Normal"); // 设置课程发布状态
        boolean flag = courseService.updateById(eduCourse);
        if (flag) {
            return R.ok();
        } else {
            return R.error();
        }
    }

二、前端实现

  • 定义api

     //课程最终发布
            publishCourse(id) {
                return request({
                    url: "/eduservice/course/publishCourse/" + id,
                    method: 'post',
                })
            }
    
    
  • 定义方法

    <el-button :disabled="saveBtnDisabled" type="primary" @click="publish">发布课程</el-button>
    
    //发布课程
                publish() {
                this.$confirm("你确定要发布此课程, 是否继续?", "提示", {
                    confirmButtonText: "确定",
                    cancelButtonText: "取消",
                    type: "warning",
                }).then(() => {
                    course.publishCourse(this.courseId).then(response => {
                    //提示信息
                    this.$message({
                        message: "课程发布成功",
                        type: "success",
                    });
                    //跳转课程列表页面
                    this.$router.push({ path: "/course/list" });
                    });
                });
                }
    
       
  • 测试

     

     

     


课程列表功能

1. 课程列表展示功能

  • EduCourseController

     // 查询课程所有信息
        @GetMapping
        public R getCourseList() {
            List<EduCourse> list = courseService.list(null);
            return R.ok().data("list", list);
        }
    
  • 定义api

         //课程列表
            getListCourse() {
                return request({
                    url: "/eduservice/course/",
                    method: 'get',
                })
            },
    
  • template

     <!-- 表格 -->
        <el-table
          :data="list"
          border
          fit
          highlight-current-row>
    
          <el-table-column
            label="序号"
            width="70"
            align="center">
            <template slot-scope="scope">
              {
        { (page - 1) * limit + scope.$index + 1 }}
            </template>
          </el-table-column>
    
          <el-table-column prop="title" label="课程名称" width="200" />
    
          <el-table-column label="课程状态" width="120">
            <template slot-scope="scope">
              {
        { scope.row.status===Normal?'已发布':'未发布' }}
            </template>
          </el-table-column>
    
          <el-table-column prop="lessonNum" label="课时数" />
    
          <el-table-column prop="gmtCreate" label="添加时间" width="260"/>
    
          <el-table-column prop="viewCount" label="浏览数量" width="100" />
    
          <el-table-column label="操作" width="200" align="center">
            <template slot-scope="scope">
              <router-link :to="'/teacher/edit/'+scope.row.id">
                <el-button type="primary" size="mini" icon="el-icon-edit">编辑课程基本信息</el-button>
              </router-link>
              <router-link :to="'/teacher/edit/'+scope.row.id">
                <el-button type="primary" size="mini" icon="el-icon-edit">编辑课程大纲</el-button>
              </router-link>
              <el-button type="danger" size="mini" icon="el-icon-delete" @click="removeDataById(scope.row.id)">删除</el-button>
            </template>
          </el-table-column>
        </el-table>
    
    
       
  • methods方法

     // 课程列表的方法
           getList(page = 1) {
          this.page = page;
          course
            .getListCourse(this.page, this.limit, this.courseQuery)
            .then((response) => {
              //请求成功
              //response接口返回的数据
              this.list = response.data.rows
              this.total = response.data.total
            });
        },
    
  • 测试

 


2. 课程列表查询功能

  • EduCourseController

    // 多条件查询课程带分页
        @ApiOperation(value = "多条件查询讲师带分页")
        @PostMapping("pageCourseCondition/{page}/{limit}")
        public R pageTeacherCondition(@ApiParam(name = "page", value = "当前页码", required = true)@PathVariable Long page,
                                      @ApiParam(name = "limit", value = "每页记录数", required = true)@PathVariable Long limit,
                                      // required = false 表示此条件对象可以不传入值
                                      @RequestBody(required = false) CourseQuery courseQuery) {
            // 创建分页page对象
            Page<EduCourse> pageParam = new Page<>(page, limit);
    
            // 调用方法实现多条件分页查询
            courseService.pageQuery(pageParam, courseQuery);
    
            // 获取查询到的数据
            List<EduCourse> records = pageParam.getRecords();
    
            // 获取总记录数
            long total = pageParam.getTotal();
            return R.ok().data("total", total).data("rows", records);
        }
    
       
  • EduCourseService

      // 多条件查询课程带分页
        void pageQuery(Page<EduCourse> pageParam, CourseQuery courseQuery);
    
  • EduCourseServiceImpl

     // 多条件查询课程带分页
        @Override
        public void pageQuery(Page<EduCourse> eduCoursePage, CourseQuery courseQuery) {
            QueryWrapper<EduCourse> queryWrapper = new QueryWrapper<>();
            queryWrapper.orderByDesc("gmt_create");
            if(courseQuery==null){
                this.page(eduCoursePage,queryWrapper);
                return;
            }
            String title = courseQuery.getTitle();
            String teacherId = courseQuery.getTeacherId();
            String subjectId = courseQuery.getSubjectId();
            String subjectParentId = courseQuery.getSubjectParentId();
            String status = courseQuery.getStatus();
    
            if(!StringUtils.isEmpty(title)){
                queryWrapper.like("title",title);
            }
            if(!StringUtils.isEmpty(teacherId)){
                queryWrapper.eq("teacher_id",teacherId);
            }
            if(!StringUtils.isEmpty(status)){
                queryWrapper.eq("status",status);
            }
            if(!StringUtils.isEmpty(subjectId)){
                queryWrapper.eq("subject_id", subjectId);
            }
            if(!StringUtils.isEmpty(subjectParentId)){
                queryWrapper.eq("subject_parent_id", subjectParentId);
            }
            this.page(eduCoursePage,queryWrapper);
    
        }
    
       
  • 定义api

          // 课程列表(条件查询分页)
            getListCourse(page,limit,courseQuery) {
                return request({
                        url: `/eduservice/course/pageCourseCondition/${page}/${limit}`,
                        method: 'post',
                        data:courseQuery
                      })
            },
    
    
  • template

     <!--查询表单-->
        <el-form :inline="true" class="demo-form-inline">
          <el-form-item>
            <el-input v-model="courseQuery.title" placeholder="课程名称" />
          </el-form-item>
    
          <el-form-item>
            <el-select
              v-model="courseQuery.status"
              clearable
              placeholder="课程状态"
            >
              <el-option value="Normal" label="已发布" />
              <el-option value="Draft" label="未发布" />
            </el-select>
          </el-form-item>
          <el-form-item>
            <el-input v-model="courseQuery.teacherId" placeholder="教师id" />
          </el-form-item>
    
          <el-button type="primary" icon="el-icon-search" @click="getList()"
            >查询</el-button
          >
          <el-button type="default" @click="resetData()">清空</el-button>
        </el-form>
    
       
  • methods方法

     getList(page = 1) {
          this.page = page;
          course
            .getListCourse(this.page, this.limit, this.courseQuery)
            .then((response) => {
              //请求成功
              //response接口返回的数据
              this.list = response.data.rows
              this.total = response.data.total
            });
        },
    
         resetData() {
              // 清空的方法
              // 表单输入项数据清空
              this.courseQuery = {}
              // 查询所有讲师数据
              this.getList()
         },
    
       
  • 测试

     


3. 课程列表删除课程功能

一、后端实现

  1. controller层
    EduCourseController

      // 删除课程
        @DeleteMapping("{courseId}")
        public R deleteCourse(@PathVariable String courseId) {
            courseService.removeCourse(courseId);
            return R.ok();
        }
    
  2. service层
    如果用户确定删除,则首先删除 video 记录,然后删除 chapter 记录,再删除 description 记录,最后删除 Course 记录.

  • EduVideoService

     // 根据课程id删除小节
        void removeVideoByCourseId(String courseId);
    
  • EduVideoServiceImpl

      // 根据课程id删除小节
        @Override
        public void removeVideoByCourseId(String courseId) {
            QueryWrapper<EduVideo> queryWrapper = new QueryWrapper<>();
            queryWrapper.eq("course_id", courseId);
            baseMapper.delete(queryWrapper);
        }
    
  • EduChapterService

    //根据课程id删除章节
        void removeChapterByCourseId(String courseId);
    
  • EduChapterServiceImpl

    //根据课程id删除章节
        @Override
        public void removeChapterByCourseId(String courseId) {
            QueryWrapper<EduChapter> queryWrapper = new QueryWrapper<>();
            queryWrapper.eq("course_id", courseId);
            baseMapper.delete(queryWrapper);
        }
    
  • EduCourseService

     // 删除课程
        void removeCourse(String courseId);
    
  • EduCourseServiceImpl

       // 删除课程
        @Override
        public void removeCourse(String courseId) {
            // 1.根据课程id删除小节
            // TODO 删除小节,删除对应视频文件
            eduVideoService.removeVideoByCourseId(courseId);
    
            //2.根据课程id删除章节
            eduChapterService.removeChapterByCourseId(courseId);
    
            //3.根据课程id删除描述
            courseDescriptionService.removeById(courseId);
    
            //4.根据课程id删除课程本身
            int result = baseMapper.deleteById(courseId);
            if (result == 0) {
                throw new GuliException(20001, "删除失败");
            }
        }
    
       

二、前端实现

  • 定义api

      // 删除课程
            deleteCourseId(id) {
                return request({
                    url: `/eduservice/course/${id}`,
                    method: 'delete'
                })
            },
    
  • template

    <el-button type="danger" size="mini" icon="el-icon-delete" @click="removeDataById(scope.row.id)">删除</el-button>
    
  • methods方法

    //删除课程的方法
            removeDataById(id) {
                this.$confirm('此操作将永久删除讲师记录, 是否继续?', '提示', {
                    confirmButtonText: '确定',
                    cancelButtonText: '取消',
                    type: 'warning'
                }).then(() => {  //点击确定,执行then方法
                    //调用删除的方法
                    course.deleteCourseId(id)
                        .then(response =>{//删除成功
                        //提示信息
                        this.$message({
                            type: 'success',
                            message: '删除成功!'
                        });
                        //回到列表页面
                        this.getList()
                    })
                }) //点击取消,执行catch方法
            }
    
    
       
  • 测试


 

 
 
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转载:https://blog.csdn.net/m0_52691962/article/details/127795960
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