在Ionic中如何绑定文件数据和请求体(如何做多部分数据)

<input type="file" (change)="onFileSelected($event)">

onFileSelected(event) {
  const file = event.target.files[0];
  this.uploadFile(file);
}

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

uploadFile(file: File) {
  const formData = new FormData();
  formData.append('file', file);

  // 添加其他请求参数
  formData.append('name', 'John Doe');
  formData.append('age', '25');

  // 发送POST请求
  this.http.post('https://example.com/upload', formData).subscribe(
    (response) => {
      console.log('File uploaded successfully');
    },
    (error) => {
      console.error('Error uploading file:', error);
    }
  );
}

constructor(private http: HttpClient) { }