SpringBoot+Vue项目多文件上传同时上传其他参数

Java后端接收 POST

@ApiOperation(value = "添加测试报告信息", notes = "添加测试报告信息")
@EnableAuth
@PostMapping(value = "/saveTestReport")
@Transactional(rollbackFor = Exception.class)
public ResultData saveTestReport(@RequestParam(value = "files") List files,
                                 TestReport testReport) {

前端核心代码：

fillFormData(){
  let formData = new FormData();
  let MultipartFiles;
  if (this.dialogInfo.type==='1'){//pdf
    MultipartFiles = this.$refs['MultipartFile'].uploadFiles;//文件
  }else{//图片
    MultipartFiles = this.$refs['MultipartFile1'].uploadFiles;//文件
  }
  if(MultipartFiles===undefined){
    this.$message.error("请上传文件");
    return false;
  }
  this.dialogInfo.unitName=this.selectValHome1
  for(let key in this.dialogInfo){
    formData.append(key, this.dialogInfo[key]);
  }
  for(let i=0;i