Spring boot控制器-上传多部分文件和Java对象，Angular 4,7

@RestController
public class FileUploadController {

    @PostMapping("/upload")
    public String uploadFiles(@RequestParam("files") MultipartFile[] files, @RequestParam("data") MyObject data) {
        // 处理文件上传和对象数据
        // ...
        return "上传成功";
    }
}

import { Component } from '@angular/core';
import { HttpClient } from '@angular/common/http';

@Component({
  selector: 'app-file-upload',
  templateUrl: './file-upload.component.html',
  styleUrls: ['./file-upload.component.css']
})
export class FileUploadComponent {

  constructor(private http: HttpClient) { }

  uploadFilesAndData(files: File[], data: any): void {
    const formData = new FormData();
    for (let i = 0; i < files.length; i++) {
      formData.append('files', files[i]);
    }
    formData.append('data', JSON.stringify(data));

    this.http.post('/upload', formData).subscribe(
      response => {
        console.log(response);
      },
      error => {
        console.error(error);
      }
    );
  }
}