[英]Angular 2 HTTP POST does an OPTIONS call
I'm encountering a really strange problem with my Angular 2 application. 我的Angular 2应用程序遇到了一个非常奇怪的问题。 I actually want to make a POST call containing a JSON to my Play Scala API, but it keeps want to try to make an OPTIONS call.
我实际上想要向我的Play Scala API发出包含JSON的POST调用,但它一直想尝试进行OPTIONS调用。
Here is my code : 这是我的代码:
LoginService login服务
constructor (private _apiEndpoint: ApiEndpoint) {}
postLogin(login: string, credential: string): Observable<AuthToken> {
let headers = new Headers({ "Content-Type": "application/json" })
let jsonLogin = {"login": login, "password": credential}
return this._apiEndpoint.postLogin(JSON.stringify(jsonLogin), headers)
.map(this._apiEndpoint.extractData)
}
ApiEndpoint ApiEndpoint
constructor (private _http: Http) {}
postLogin(body: string, options: any) {
return this._http.post("http://localhost:9000/login", body, {
headers: options
})
}
And then when I try to make the call (I've tried to console.log to check the JSON and it's correct), and the call tries to make an OPTIONS call for whatever reason : 然后当我尝试进行调用时(我已经尝试使用console.log来检查JSON并且它是正确的),并且调用尝试以任何原因进行OPTIONS调用:
Has anyone an idea ? 有人有想法吗? Thanks !
谢谢 !
You are making a cross domain request. 您正在进行跨域请求。
The request is to localhost:9000
and is made from localhost:9002
. 请求是
localhost:9000
,由localhost:9002
。
The browser creates a pre-flight request with the OPTIONS verb in order to know if he can continue and make the "real" request. 浏览器使用OPTIONS动词创建一个飞行前请求,以便知道他是否可以继续并发出“真实”请求。
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