使用Angular 7将文件上传到Spring web服务

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 {
  selectedFile: File;

  constructor(private http: HttpClient) { }

  onFileSelected(event): void {
    this.selectedFile = event.target.files[0];
  }

  onUpload(): void {
    const formData = new FormData();
    formData.append('file', this.selectedFile);

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

<input type="file" (change)="onFileSelected($event)">
<button (click)="onUpload()">Upload</button>

import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;

@RestController
@RequestMapping("/api")
public class FileUploadController {

    @PostMapping("/upload")
    public String uploadFile(@RequestParam("file") MultipartFile file) {
        // 处理文件上传逻辑
        if (!file.isEmpty()) {
            try {
                // 将文件保存到服务器指定位置
                file.transferTo(new File("/path/to/save/file"));
                return "File uploaded successfully";
            } catch (Exception e) {
                return "File upload failed";
            }
        } else {
            return "No file selected";
        }
    }
}