将标头添加到 API Http 请求，Angular 2，Ionic 2

Question

我有一个 ionic 2 应用程序（它使用 Angular 2 Http），我有从 API 获取 JSON 的代码，但是我需要发送 app-id、app-key 和 Accept 作为标头，这是主要代码...

import {Component} from '@angular/core';
import {NavController} from 'ionic-angular';
import {Http} from 'angular2/http';

@Component({
templateUrl: 'build/pages/latest-page/latest-page.html'
 })
 export class LatestPage {
 static get parameters() {
 return [[NavController]];
}

constructor(_navController, http) {

this._navControler = _navController;
this.http = http;

this.http.get("https://twit.tv/api/v1.0/people/77").subscribe(data => {
 console.log("Got Data");
 this.items = JSON.parse(data._body).people;
}, error => {
 console.log("Error with Data");
});

 }

这就是我尝试添加标题的方式，但是它不起作用...

constructor(_navController, http) {

this._navControler = _navController;
this.http = http;

var headers = new Headers();
headers.append('app-id', '0000');
headers.append('app-key', 'abc000abc');
headers.append('Accept', 'application/json ');

this.http.get("https://twit.tv/api/v1.0/people/77"),{"Headers": headers}.subscribe (data => {
console.log("Got Data");
this.items = JSON.parse(data._body).people;
}, error => {
 console.log("Error with Data");
});

 }

有什么想法吗？

谢谢

Answer 1

Headers必须在RequestOptions里面设置，也就是第二个参数http.get()

此外，您的代码中有语法错误。请求选项是.get(url, {})的第二个参数，你这样写：.get(url),{}

this.http.get("https://twit.tv/api/v1.0/people/77",{"Headers": headers}).subscribe (data => {
console.log("Got Data");
this.items = JSON.parse(data._body).people;
}, error => {
 console.log("Error with Data");
});

创建明确的请求选项。

let opt: RequestOptions
let myHeaders: Headers = new Headers
myHeaders.set('Content-type', 'application/json')
opt = new RequestOptions({
  headers: myHeaders
})

_http.get(url, opt).

经过一些误解，我将在这里留下你自己的代码和我的建议：

constructor(_navController, http) {
 
/*this isn't necessary, _navController and http are already available for "this. "*/
   this._navControler = _navController;  
   this.http = http;
 
   let opt: RequestOptions
   let myHeaders: Headers = new Headers
   myHeaders.set('app-id', 'c2549df0');
   myHeaders.append('app-key', 'a2d31ce2ecb3c46739b7b0ebb1b45a8b');
   myHeaders.append('Content-type', 'application/json')
   
   opt = new RequestOptions({
     headers: myHeaders
    })   
   
   this.http.get("https://twit.tv/api/v1.0/people/77",opt).subscribe (data => {
     console.log("Got Data");
     this.items = JSON.parse(data._body).people;
   
  }, error => {
    console.log("Error with Data");
  });

}