Excel表格和SpringBoot整合进行导入和导出操作

Posted 2022-06-17 指导毕业设计Monkey

1. 导入相关的jar包

2. 前端发送请求代码

     <div class="im_export">
            <el-upload class="upload-demo" action="string" accept=".xlsx, .xls" :on-success="handsuccess"
              :before-upload="handbeforeupload" :http-request="httpRequest">
              <el-button size="mini" type="danger" plain>导入</el-button>
            </el-upload>
          </div>
 <el-button type="danger" size="mini" style="margin-left: 10px" plain @click="exportExcel()">导出</el-button>

      //  覆盖默认上传行为
      httpRequest(params) 
        let fd = new FormData();
        fd.append("file", params.file);
        importExcelApi(fd)
          .then(res => 
            if (res.resultCode == 0) 
              this.resultMsgVal = res.resultMsg;
              this.getDataList();
              this.$message(
                message: "上传成功",
                type: "success",
                showClose: true
              );
             else if (res.resultCode == 500) 
              this.$message(
                message: res.resultMsg,
                type: "warning",
                showClose: true
              );
             else if (res.resultCode == 40001) 
              this.$message(
                message: res.resultMsg,
                type: "warning",
                showClose: true
              );
            
          )
          .catch(err => 
            this.$store.dispatch("loading/CHANGE_LOADING", false);
            this.$message(
              message: err,
              type: "warning",
              showClose: true
            );
          );
      ,

  // 上传之前的钩子
      handbeforeupload(file) 
        console.log("上传之前", file);
        this.fileName = file.name;
        const isExcel =
          file.name.split(".")[1] === "xlsx" || file.name.split(".")[1] === "xls";
        const isSize = file.size / 1024 / 1024 < 10;
        if (!isExcel) 
          this.$message(
            message: "只能上传xls或xlsx文件!",
            type: "warning",
            showClose: true
          );
        
        if (!isSize) 
          this.$message(
            message: "上传文件大小不能超过 10MB!",
            type: "warning",
            showClose: true
          );
        
        return isExcel && isSize;
      ,
  handsuccess() 
        // console.log("上传成功");
      ,

// 导出函数
      // 点击导出
      exportExcel() 
        console.log(this.form.tableData);
        let params = 
          pageNum: this.page.pageIndex,
          pageSize: this.page.pageSize,
          orderList: this.orderList,
          searchConditionList: this.form.tableData
        ;
        excelExportApi(params)
          .then(res => 
            // console.log(res);
            const blob = new Blob([res], 
              type: "application/vnd.ms-excel"
            ); //处理文档流
            const fileName = "疾病分组编码维护.xlsx"; //导出后的文件名
            if (
              !!window.ActiveXObject ||
              "ActiveXObject" in window ||
              window.navigator.userAgent.indexOf("Edge/") > 0
            ) 
              //判断是不是ie的浏览器
              window.navigator.msSaveOrOpenBlob(blob, fileName);
              console.log("ieeeeee");
             else 
              const elink = document.createElement("a");
              elink.download = fileName;
              elink.style.display = "none";
              elink.href = URL.createObjectURL(blob);
              document.body.appendChild(elink);
              elink.click();
              URL.revokeObjectURL(elink.href); // 释放URL 对象
              document.body.removeChild(elink);
              console.log("noieeeee");
            
          )
          .catch(err => 
            this.$message(
              message: err || "导出失败",
              type: "warning",
              showClose: true
            );
          );
      ,

3. 后端的进行文件的校验，进行Excel字段非空的判断，Excel表格里面字段重复的校验。

3.1 controller层接受请求 ObjectResponse自己封装的响应请求类

    @ApiOperation("疾病分组编码维护-导入")
    @PostMapping(value = "/importExcel")
    public ObjectRestResponse importExcel(@RequestParam("file") MultipartFile file) 
        ObjectRestResponse restResponse = new ObjectRestResponse();
        try 
            restResponse = commoncodeBiz.importExcel(file);
         catch (Exception e) 
            e.printStackTrace();
        
        return restResponse;
    

3.2service层

    /**
     * 解析页面导入的文件
     *
     * @return ObjectRestResponse
     */
    public ObjectRestResponse importExcel(MultipartFile file) throws Exception 
        ObjectRestResponse objectRestResponse = new ObjectRestResponse();
        if (file == null) 
            objectRestResponse.setErrorMsg("导入的文件为空");
            throw new NullArgumentException();
        
        String filename = file.getOriginalFilename();
        if (filename == null) 
            throw new NullArgumentException();
        
        try 
            // 调用解析文件方法
            objectRestResponse = parseRowCell(filename, file.getInputStream());
            return objectRestResponse;
         catch (IOException e) 
            throw new Exception(e.getMessage());
        
    

    /**
     * 解析文件中的数据
     *
     * @return
     */
    @Transactional(rollbackFor = Exception.class)
     ObjectRestResponse parseRowCell(String filename, InputStream is) throws IOException 
        ObjectRestResponse restResponse = new ObjectRestResponse();
        try 
            Workbook workbook = null;
            // 判断excel的后缀，不同的后缀用不同的对象去解析
            // xls是低版本的Excel文件
            if (filename.endsWith(".xls")) 
                workbook = new HSSFWorkbook(is);
            
            // xlsx是高版本的Excel文件
            if (filename.endsWith(".xlsx")) 
                workbook = new XSSFWorkbook(is);
            
            if (workbook == null) 
                throw new NullArgumentException();
            
            // 解析第一个sheet
            List<ClmCommoncodeLckl> list = new ArrayList<>();

            Sheet sheet1 = workbook.getSheetAt(0);
            String result1 = parseFileForLchj(sheet1 , list);
//          校验数据是否重复
            for (int i = 0; i < list.size(); i++) 
                int i1 = excelCheckClmCommoncodeLcklData(list.get(i),i);
                if (org.apache.commons.lang.StringUtils.isBlank(list.get(i).getCommcde())) 
                    restResponse.setErrorMsg("第"+(i1+1)+"条数据内部疾病分组编码不能为空,请检查之后再保存");
                    return restResponse;
                
                if (org.apache.commons.lang.StringUtils.isBlank(list.get(i).getCommcdenam())) 
                    restResponse.setErrorMsg("第"+(i1+1)+"条数据内部疾病分组说明不能为空,请检查之后再保存");
                    return restResponse;
                
                if(i1 > 0)
                    restResponse.setErrorMsg("你的导入数据的第"+(i1+1)+"行疾病分组编码重复");
                    return restResponse;
                
            
            // 插入数据
            insertDatas(list);
            String errorMsg = "";
            if (!"导入成功".equals(result1))
                errorMsg += result1 + ",";
            
            if (StringUtils.isNotBlank(errorMsg))
                restResponse.setErrorMsg(errorMsg);
                return restResponse;
            
         catch (Exception e) 
            e.printStackTrace();
            log.error("导入异常：",e);
            throw e;
//            restResponse.setSuucessMsg("导入异常");
//            return restResponse;
        
        restResponse.setSuucessMsg("导入成功");
        return restResponse;
    

//  校验从excel导入的数据
    private int excelCheckClmCommoncodeLcklData(ClmCommoncodeLckl clmZeroPayLchj,int i) 
        return checkRepeatIllnessGroup(clmZeroPayLchj.getCommcde(),i);
    



    private int checkRepeatIllnessGroup(String commcde,int i) 

        i = i +1;
        Example example = new Example(ClmCommoncodeLckl.class);
        Example.Criteria criteria = example.createCriteria();
        criteria.andEqualTo("commcdetyp","10");
        criteria.andEqualTo("commcde",commcde);
        criteria.andEqualTo("status",1);
        List<ClmCommoncodeLcklDTO> clmCommoncodeLcklList = clmCommoncodeLcklMapper.selectByExample(example);
        if(clmCommoncodeLcklList.size() != 0)
            return i;
        else 
            return  0;
        
    

3.2 Entity需要加上一个@Excel注解进行字段的校验

/**
	 * 类别编码
	 */
	@Column(name = "commcde")
	@Excel(name = "类别编码")
	private String commcde;
	/**
	 * 类别名称
	 */
	@Column(name = "commcdenam")
	@Excel(name = "类别名称")
	private String commcdenam;