在ionic 2中，请求参数不通过API发送

npm install @angular/http --save

import { Http, Headers } from '@angular/http';

constructor(private http: Http) { }

sendRequest() {
  // 构建请求参数
  let params = {
    param1: 'value1',
    param2: 'value2'
  };

  // 构建请求头
  let headers = new Headers();
  headers.append('Content-Type', 'application/json');

  // 发送POST请求
  this.http.post('http://example.com/api', JSON.stringify(params), { headers: headers })
    .subscribe(data => {
      console.log(data);
    }, error => {
      console.log(error);
    });
}

this.sendRequest();