如何调用包含文本文件的URL，将其转换为字符串并在ionic 2中显示？

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

...

constructor(private http: Http) {}

...

this.http.get('http://example.com/textfile.txt')
  .subscribe(response => {
    // 在这里处理响应，将其转换为字符串并显示
    let text = response.text();
    console.log(text);
  }, error => {
    // 处理错误
    console.error(error);
  });

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

...

text: string;

constructor(private http: Http) {}

...

this.http.get('http://example.com/textfile.txt')
  .subscribe(response => {
    // 将响应转换为字符串
    this.text = response.text();
  }, error => {
    // 处理错误
    console.error(error);
  });

<ion-content>
  <div>{{ text }}</div>
</ion-content>