第二次课

请求流程

去除eslint校验

vue.config.js修改

 lintOnSave: false

两个vue相互传值

    this.$router.push({path:"/appInfo",query:{userType:result.data.userType,account:result.data.account}})

	mounted() {

            this.account=this.$route.query.account
            this.userType=this.$route.query.userType
        },

递归查询分类

https://www.jf3q.com/article/detail/6311

递归算法查询课程分类列表（树形）

递归查询效率比较高。

    public List<CategoryTreeVo> tree() {
        List<CategoryTreeVo> vos= new ArrayList<>();
        List<AppCategory> list = appCategoryDao.queryAllBy(new AppCategory());//所有的分类

        for (AppCategory category : list) {
            CategoryTreeVo vo = new CategoryTreeVo();
            BeanUtils.copyProperties(category,vo);
            vos.add(vo);
        }
        List<CategoryTreeVo> treeVoList = new ArrayList<>();
        for (CategoryTreeVo vo : vos) {
            if (vo.getParentid() !=null && vo.getParentid() ==1L) {
                vo.setLevel(1);//一级分类
                treeVoList.add(findChildren(vo,vos));//装填二级分类
            }
        }




        return treeVoList;
    }

    private CategoryTreeVo findChildren(CategoryTreeVo vo, List<CategoryTreeVo> vos) {

        vo.setChildren(new ArrayList<>());

        for (CategoryTreeVo it : vos) {
            if(vo.getId()==it.getParentid()) {
                int level = vo.getLevel() + 1;
                it.setLevel(level);

                vo.getChildren().add(it);//把二级分类挂在一级上面
                findChildren(it,vos);//根据二级找三级，根据三级找四级，以此类推
            }
        }
        return vo;
    }

新增修改app基础信息接口

@PostMapping("/saveOrUpdate")
    public ResultVo saveOrUpdate(
            AppInfo appInfo, MultipartFile file, HttpServletRequest request
            ){

        String token = request.getHeader("token");
        if (!file.isEmpty()) {
            String originalFilename = file.getOriginalFilename();
            String fileFormat = FilenameUtils.getExtension(originalFilename);
            if (file.getSize()>500*1024) {
                return ResultVo.error("文件超过了500k");
            }else if(
                    fileFormat.equalsIgnoreCase("jpg")||
                    fileFormat.equalsIgnoreCase("jpeg")||
                    fileFormat.equalsIgnoreCase("png")||
                    fileFormat.equalsIgnoreCase("gif")
            ){

                //正常传文件
                String realPath = request.getServletContext().getRealPath("/upload");
                File savePath= new File(realPath);
                if (!savePath.exists()) {
                    savePath.mkdirs();
                }

                String fileName= UUID.randomUUID().toString().replace("-","");

                File saveFile = new File(realPath+"/"+fileName+"."+fileFormat);
                try {
                    file.transferTo(saveFile);

                    appInfo.setLogopicpath("/upload/"+fileName+"."+fileFormat);

                } catch (IOException e) {

                    e.printStackTrace();

                    return ResultVo.error("logo图上传失败");
                }


            }else{
                return ResultVo.error("文件格式错误");
            }

        }
        DevUser devUser = (DevUser)SeesionManager.get(token);
        if (appInfo.getId()==null) {

            appInfo.setDownloads(0L);

            appInfo.setDevid(devUser.getId());
            appInfo.setCreationdate(new Date());
            appInfo.setStatus(1L);
            appInfo.setCreatedby(devUser.getId());


        }else {

            appInfo.setModifyby(devUser.getId());
            appInfo.setModifydate(new Date());

        }

        appInfoService.saveOrUpdate(appInfo);
        return ResultVo.success(null);


    }

带条件分页查询app基础信息

@PostMapping("/page")
    public ResultVo getPage(@RequestBody AppInfoDto appInfoDto ,@RequestParam(defaultValue = "1") Integer pageNum)
    {

        PageInfo<AppInfo> page =appInfoService.getPage(appInfoDto,pageNum);
        return ResultVo.success(page);

    }

 public PageInfo<AppInfo> getPage(AppInfoDto appInfoDto, Integer pageNum) {
        AppInfo appInfo = new AppInfo();

        BeanUtils.copyProperties(appInfoDto,appInfo);
        PageHelper.startPage(pageNum, SysConstant.pageSize);
        List<AppInfo> list = appInfoDao.queryAllBy(appInfo);
        PageInfo<AppInfo> page= new PageInfo<>(list);
        return page;
    }