文件上传ajax

function upload() {
      //alert("文件已上传");
      var files = $('#file').prop('files') //单个
      console.log(files)
      var data = new FormData();
      console.log(data)
      data.append('file', files[0]);

      $.ajax({
        url: '/fileUpload/upload',
        type: 'POST',
        data: data,
        success: function (url) {
          $("#fileUploadPath").val(url);
        },
        dataType: 'text',
        cache: false,
        processData: false,
        contentType: false
      });
    }

前端：

 <input id="fileUploadPath" type="hidden" value=""/> <!--保存文件上传后的路径-->
          学生照片: <input id="file" type="file" name="file" onchange="upload()"/>

controller：

   @ResponseBody
    @PostMapping("/upload")
    public String upload(@RequestParam("file")MultipartFile file, HttpServletRequest request) throws IOException {
        long fileName = IdUtil.getSnowflakeNextId();
        //request.getServletContext().getResource("upload") 获取upload目录所在的磁盘路径
//        String upload = request.getServletContext().getResource("upload").toString();
//        upload = upload.substring(6);
//        System.out.println(upload); // file:/
//        String filename = fileName + "." + file.getOriginalFilename().split("\\.")[1];
//        file.transferTo(new File(upload + filename));

        String url = minioUtil.putFile("test", file);
//        System.out.println("上传的文件：" + file.getOriginalFilename());
//        String filePath = "upload/" + filename;
        return url;
    }

上传到minio