Angular 5 http post不发送请求
我正在尝试在Angular 5 http post不发送请求,angular,typescript,http,angular-services,angular-httpclient,Angular,Typescript,Http,Angular Services,Angular Httpclient,我正在尝试在Angular 5应用程序中实现授权。我在其中有auth.service.ts和login()方法,它返回Observable。看起来是这样的: login(loginForm: LoginForm): Observable<any> { debugger; return this.http.post(`${this.endpoint}session/login`, loginForm) .map(res => {
Angular 5
应用程序中实现授权。我在其中有auth.service.ts
和login()
方法,它返回Observable
。看起来是这样的:
login(loginForm: LoginForm): Observable<any> {
debugger;
return this.http.post(`${this.endpoint}session/login`, loginForm)
.map(res => {
return res;
}).catch(error => {
debugger;
return Observable.of(false);
});
}
AppComponent.html:15 ERROR TypeError: Converting circular structure to JSON
at JSON.stringify (<anonymous>)
at HttpRequest.serializeBody (http.js:916)
at Observable.eval [as _subscribe] (http.js:2196)
at Observable._trySubscribe (Observable.js:172)
at Observable.subscribe (Observable.js:160)
at subscribeToResult (subscribeToResult.js:23)
at MergeMapSubscriber._innerSub (mergeMap.js:138)
at MergeMapSubscriber._tryNext (mergeMap.js:135)
at MergeMapSubscriber._next (mergeMap.js:118)
at MergeMapSubscriber.Subscriber.next (Subscriber.js:92)
export class LoginForm {
constructor(public email?: string,
public password?: string) {}
}
而且chrome网络选项卡中没有记录XHR请求。
有什么想法吗?正如@JBNizet所指出的,我试图发送一个无法转换为
JSON
的对象,我检查了我的LoginForm
,它看起来像这样:
login(loginForm: LoginForm): Observable<any> {
debugger;
return this.http.post(`${this.endpoint}session/login`, loginForm)
.map(res => {
return res;
}).catch(error => {
debugger;
return Observable.of(false);
});
}
AppComponent.html:15 ERROR TypeError: Converting circular structure to JSON
at JSON.stringify (<anonymous>)
at HttpRequest.serializeBody (http.js:916)
at Observable.eval [as _subscribe] (http.js:2196)
at Observable._trySubscribe (Observable.js:172)
at Observable.subscribe (Observable.js:160)
at subscribeToResult (subscribeToResult.js:23)
at MergeMapSubscriber._innerSub (mergeMap.js:138)
at MergeMapSubscriber._tryNext (mergeMap.js:135)
at MergeMapSubscriber._next (mergeMap.js:118)
at MergeMapSubscriber.Subscriber.next (Subscriber.js:92)
export class LoginForm {
constructor(public email?: string,
public password?: string) {}
}
我把班级改成:
export class LoginForm {
public email: string;
public password: string;
}
它现在正在工作可能是Hi的复制品。。你在后端使用ORM吗。。我认为您有一个循环依赖的对象结构。错误消息非常清楚:您试图发送一个对象,因此需要将其转换为JSON,但该对象包含一个循环结构,因此无法转换为JSON。检查LoginForm是什么并包含什么。