Angular 2,Http和Not设置Content-Type" application / json" [英] Angular 2, Http and Not setting Content-Type "application/json"
问题描述
我正在尝试在服务中使用Angular 2(2.0.0-rc.1)执行简单的Check Login方法。当我尝试将内容类型设置为application / json时,它在发送到我的web api后端时从不设置标题。
I am trying to do a simple Check Login method using Angular 2(2.0.0-rc.1) in a service. When I attempt to set the content-type to application/json it never sets the headers when sending to my web api backend.
import { Injectable } from '@angular/core';
import { HTTP_PROVIDERS, Http, Response, Headers, RequestOptionsArgs, RequestMethod, Request, RequestOptions } from '@angular/http';
import { Observable } from 'rxjs/Rx';
import { Other Modules Left out for Security } from 'Hidden';
@Injectable()
export class LoginService {
private _http: Http;
constructor(http: Http) {
this._http = http;
}
CheckLogin(model: CredentialModel) {
let url = 'http://localhost:51671/api/Login';
let data = JSON.stringify(model);
let headers = new Headers();
headers.append('Content-Type', 'application/json');
headers.append('Accept', 'application/json');
let requestOptions = new RequestOptions({
method: RequestMethod.Post,
url: url,
headers: headers,
body: data
});
console.log(requestOptions);
console.log(data);
return this._http.post(url, data, requestOptions);
}
}
OPTIONS /api/Login HTTP/1.1
Host: localhost:51671
Connection: keep-alive
Pragma: no-cache
Cache-Control: no-cache
Access-Control-Request-Method: POST
Origin: http://localhost:5616
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2754.0 Safari/537.36
Access-Control-Request-Headers: content-type
Accept: */*
DNT: 1
Referer: http://localhost:5616/
Accept-Encoding: gzip, deflate, sdch
Accept-Language: en-US,en;q=0.8
使用使用PostMan完全相同的数据工作正常!看起来Angular 2使用POST方法发送application / json存在问题。
Using the exact same data using PostMan works fine! Looks like there is an issue with Angular 2 sending application/json using the POST method.
解决此问题的任何帮助都会有所帮助。打开尝试任何建议。
Any help resolving this issue would be helpful. Open to trying any suggestions.
推荐答案
帖子
的方法 Http
类接受类型为 RequestOptionsArgs
的对象,而不是 RequestOptions
。
The post
method of the Http
class accepts an object of type RequestOptionsArgs
and not RequestOptions
.
class RequestOptionsArgs {
url : string
method : string | RequestMethod
search : string | URLSearchParams
headers : Headers
body : any
withCredentials : boolean
}
您可以在第三个参数中以字面方式指定它:
You can specify it literally this way within the third parameter:
return this._http.post(url, data, { headers: headers });
这篇关于Angular 2,Http和Not设置Content-Type" application / json"的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!