vue+element-ui+axios多文件上传的实现并显示整体进度_vue.js

@RequestMapping("/oss/ossUploadObject")  public ApiResponse uploadObject(@RequestParam("file") MultipartFile[] file, FileVo fileVo){      //...code      FileDto dto = new FileDto();      dto.setUrl("");      dto.setFileId("");      return ApiResponse.success(FileDto);  }

package com.yj.wiki.controller;  import org.springframework.web.bind.annotation.CrossOrigin;  import org.springframework.web.bind.annotation.PostMapping;  import org.springframework.web.bind.annotation.RestController;  import org.springframework.web.multipart.MultipartFile;     @RestController  @CrossOrigin  public class UploadFileController {         @PostMapping("/upload")      public String upload(MultipartFile[] files){             for (MultipartFile file : files) {              System.out.println(file.getOriginalFilename());             }             return "ok";      }         @PostMapping("/testabc")      public String upload(String name){             System.out.println(name    );             return "ok";      }  }