在角度文档中,他们说您必须在提供的选项上指定observe: "response"
才能获得完整的http响应,我在这里做了
constructor(private service: new () => T,
private http: HttpClient,
private httpErrorHandler: HttpErrorHandlerService,
){
this._handleError = this.httpErrorHandler.createHandleError(this.service.name);
}
private _handleError: HandleError;
//...other code
delete(resourceNameOrId: number | string): Observable<HttpErrorResponse>{
return this.http.delete<T>(this._url + resourceNameOrId, {
observe: "response"
}).pipe(
catchError(this._handleError(`delete`, null))
);
}
handleError函数在此服务中定义:
export type HandleError = <T> (operation?: string, result?: T) => (error: HttpErrorResponse) => Observable<T>;
@Injectable({
providedIn: 'root'
})
export class HttpErrorHandlerService {
constructor(private errorService: ErrorService, private modalService: NzModalService) { }
createHandleError = (serviceName = '') => <T> (operation = 'operation', result = {} as T) => this.handleError(serviceName, operation, result);
handleError<T> (serviceName = '', operation = 'operation', result = {} as T ){
return (error: HttpErrorResponse): Observable<T> => {
const message = (error.error instanceof ErrorEvent) ? error.error.message: `{error code: ${error.status}, body: "${error.message}"}`;
this.errorService.errorMessage = `${serviceName} -> ${operation} failed.\n Message: ${message}`;
console.error(this.errorService.errorMessage);
return of(result);
}
}
}
这是我如何在组件中调用服务删除功能的示例:
this.service.delete(nom).subscribe(data => {
if(!this.errorService.errorMessage){
this.notificationService.success("Suppression", "L'enregistrement a été supprimée !");
}
});
但是在我的情况下,指定observe: "response"
无效,并且error: HttpErrorResponse
仅返回错误消息,而不是完整的响应:
我在以下线程中尝试过解决方案:Angular 4.3.3 HttpClient : How get value from the header of a response?对我不起作用,提供的解决方案是定义观察选项。
我该如何解决?
observe选项仅在delete http请求返回200代码时才起作用,如下面的屏幕快照所示,但是当状态为404时,响应对象在此情况下为null,而在handleError函数中,响应主体为我唯一可以访问的东西。
答案 0 :(得分:0)
如果要将HttpErrorResponse对象包含在catchError中,请尝试在api调用完成后将其放入块中,如下所示:
<div id="student-list" ng-controller="StudentController as ctlr"
ng-init="ctrl.GetStudentDetails()" ng-cloak>
答案 1 :(得分:0)
通过拦截器拦截HttpClient挂钩是否合适? 试试这样的事情: 创建一个拦截器:
@Injectable()
export class FinalInterceptor implements HttpInterceptor {
constructor(private errorHandlerService: HttpErrorHandlerService) {}
intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
return next.handle(req).pipe(
tap((event: HttpEvent<any>) => {
if (event instanceof HttpErrorResponse) {
this.errorHandlerService.handleError(event);
}
}));
}
}
AppModule:
providers: [
...
{ provide: HTTP_INTERCEPTORS, useClass: FinalInterceptor, multi: true },
],
所以在我的处理程序服务中,我遇到了HTTP错误 next console.log.
我想这正是您想要的