3.3.3 API接口

@ApiOperation("添加课程计划") public ResponseResult addTeachplan(Teachplan teachplan);

3.3.4 课程管理服务 3.3.3.1 Dao

public interface TeachplanRepository extends JpaRepository
    
      {    //定义方法根据课程id和父结点id查询出结点列表，可以使用此方法实现查询根结点     public List
     
      findByCourseidAndParentid(String courseId,String parentId);  }
     
    

3.3.3.2 Service //获取课程根结点，如果没有则添加根结点     public String getTeachplanRoot(String courseId){        //校验课程id        Optional
    
      optional = courseBaseRepository.findById(courseId);         if(!optional.isPresent()){            return null;         }        CourseBase courseBase = optional.get();        //取出课程计划根结点List
     
       teachplanList = teachplanRepository.findByCourseidAndParentid(courseId,  "0");         if(teachplanList == null || teachplanList.size()==0){           //新增一个根结点            Teachplan teachplanRoot = new Teachplan();            teachplanRoot.setCourseid(courseId);            teachplanRoot.setPname(courseBase.getName());            teachplanRoot.setParentid("0");            teachplanRoot.setGrade("1");//1级            teachplanRoot.setStatus("0");//未发布            teachplanRepository.save(teachplanRoot);            return teachplanRoot.getId();        }       Teachplan teachplan = teachplanList.get(0);        return teachplan.getId();        }   //添加课程计划    @Transactional    public ResponseResult addTeachplan(Teachplan teachplan){       //校验课程id和课程计划名称        if(teachplan == null ||                StringUtils.isEmpty(teachplan.getCourseid()) ||                        StringUtils.isEmpty(teachplan.getPname())){           ExceptionCast.cast(CommonCode.INVALIDPARAM);        }         //取出课程id       String courseid = teachplan.getCourseid();        //取出父结点id       String parentid = teachplan.getParentid();        if(StringUtils.isEmpty(parentid)){           //如果父结点为空则获取根结点            parentid= getTeachplanRoot(courseid);        }       //取出父结点信息        Optional
      
        teachplanOptional = teachplanRepository.findById(parentid);        if(!teachplanOptional.isPresent()){           ExceptionCast.cast(CommonCode.INVALIDPARAM);        }       //父结点        Teachplan teachplanParent = teachplanOptional.get();        //父结点级别        String parentGrade = teachplanParent.getGrade();        //设置父结点        teachplan.setParentid(parentid);        teachplan.setStatus("0");//未发布        //子结点的级别，根据父结点来判断        if(parentGrade.equals("1")){           teachplan.setGrade("2");        }else if(parentGrade.equals("2")){           teachplan.setGrade("3");}       //设置课程id       teachplan.setCourseid(teachplanParent.getCourseid());        teachplanRepository.save(teachplan);        return new ResponseResult(CommonCode.SUCCESS);    }3.3.3.3 controller //添加课程计划    @Override    @PostMapping("/teachplan/add")   public ResponseResult addTeachplan(@RequestBody  Teachplan teachplan) {       return courseService.addTeachplan(teachplan);    }3.3.3.4 测试 复杂一些的业务逻辑建议写完服务端代码就进行单元测试。使用swagger-ui或postman测试上边的课程计划添加接口。   3.3.5前端 3.3.5.1 Api调用 1、定义 api方法/*添加课程计划*/  export const addTeachplan = teachplah => {    return http.requestPost(apiUrl+'/course/teachplan/add',teachplah)  }
      
     
    

2、调用 api

}         //设置课程id        teachplan.setCourseid(teachplanParent.getCourseid());         teachplanRepository.save(teachplan);         return new ResponseResult(CommonCode.SUCCESS);     }     //添加课程计划     @Override     @PostMapping("/teachplan/add")    public ResponseResult addTeachplan(@RequestBody  Teachplan teachplan) {        return courseService.addTeachplan(teachplan);     } addTeachplan(){  this.$refs.teachplayForm.validate((valid) => {    if (valid) {      //添加课程计划时带上课程id      this.teachplanActive.courseid = this.courseid;       courseApi.addTeachplan(this.teachplanActive).then((res) => {        if(res.success){         this.$message.success('提交成功');           //清空表单           this.teachplanActive = {}          //刷新整个树          this.findTeachplan();}else{         this.$message.error('提交失败');        }     });    } }) },

3.3.5 测试