Angular 2 HTTP GET返回URL null [英] Angular 2 HTTP GET returning URL null
本文介绍了Angular 2 HTTP GET返回URL null的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我试图用Typescript使用angular 2来创建一个简单的HTTP GET请求。我得到一个404错误,与空网址。
从'@ angular / core'导入{Component,OnInit} ;
从'@ angular / router'导入{Router};
从'./breadcrumbService'导入{BreadcrumbService};
从'@ angular / http'导入{Http,Response};
$ b $ @Component({
moduleId:module.id,
providers:[BreadcrumbService],
templateUrl:'html / appList.html',
styleUrls:['css / list.css']
})
export class HealthComponent {
构造函数(private http:Http){
this.http.get ('http://jsonplaceholder.typicode.com/posts/1')
.toPromise()
.then((res:Response)=> {
console.log(' RES(',res);
})
.catch((err:Error)=> {
console.log('ERR !!:',err);
});
$ / code $ / pre
错误信息:
响应{_body:Object,status:404,ok:false,statusText:Not Found,headers:Headers ...}
_body:Object
标题:标题
ok:false
status:404
statusText:Not Found
类型:2
url:null
__proto__ :Body
解决方案这可能是 InMemoryWebApiModule.forRoot
相关问题。当您加载内存中的api时,会发生这种情况,但尝试访问未定义的url。解决这个问题的方法是在 app.module
config中设置 passThruUnknownUrl:true
:
InMemoryWebApiModule.forRoot(InMemoryDataService,{passThruUnknownUrl:true})..
I am trying to make a simple HTTP GET request using angular 2 with Typescript. I am getting a 404 error, with a null url. Shown below is my component file, and the error I am receiving.
import { Component, OnInit } from '@angular/core';
import { Router } from '@angular/router';
import { BreadcrumbService } from './breadcrumbService';
import { Http, Response } from '@angular/http';
@Component({
moduleId: module.id,
providers: [ BreadcrumbService],
templateUrl: 'html/appList.html',
styleUrls: ['css/list.css']
})
export class HealthComponent {
constructor(private http: Http) {
this.http.get('http://jsonplaceholder.typicode.com/posts/1')
.toPromise()
.then((res: Response) => {
console.log('RES: ', res);
})
.catch((err: Error) => {
console.log('ERR!!: ', err);
});
}
}
The error message:
Response {_body: Object, status: 404, ok: false, statusText: "Not Found", headers: Headers…}
_body:Object
headers:Headers
ok:false
status:404
statusText:"Not Found"
type:2
url:null
__proto__:Body
解决方案 This is probably InMemoryWebApiModule.forRoot
related issue. This happens when you load in-memory api, but trying to reach undefined url. The way to solve this is by setting passThruUnknownUrl: true
in app.module
config:
InMemoryWebApiModule.forRoot(InMemoryDataService, {passThruUnknownUrl: true}) ..
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