Typescript Angular 6 中的 Http 错误处理

一、 我正在try 使用angular 6中的以下类来处理http错误.我从服务器获得了401未授权状态.但是，我没有看到控制台错误消息.

HttpErrorsHandler.ts file

import { ErrorHandler, Injectable} from '@angular/core';
    @Injectable()
    export class HttpErrorsHandler implements ErrorHandler {
      handleError(error: Error) {
         // Do whatever you like with the error (send it to the server?)
         // And log it to the console
         console.error('It happens: ', error);
      }
    }

app.module.ts file

providers: [{provide: ErrorHandler, useClass: HttpErrorsHandler}],

HttpCallFile

import { Injectable , Component} from '@angular/core';
import { HttpClient, HttpHeaders } from "@angular/common/http";
import { Observable } from 'rxjs';
import {AuthServiceJwt} from '../Common/sevice.auth.component';

@Injectable()
export class GenericHttpClientService {
    private readonly baseUrl : string = "**********";


    constructor(private httpClientModule: HttpClient , private authServiceJwt : AuthServiceJwt)  {
    }

    public GenericHttpPost<T>(_postViewModel: T , destinationUrl : string): Observable<T> {
        const headers = new HttpHeaders().set('Content-Type', 'application/json; charset=utf-8')
            .set('Authorization',`Bearer ${this.authServiceJwt.getToken}`);
        return this.httpClientModule.post<T>(this.baseUrl + destinationUrl, _postViewModel, { headers });
    }

    // This method is to post Data and Get Response Data in two different type
    public GenericHttpPostAndResponse<T,TE>(postViewModel: TE, destinationUrl: string): Observable<T> {
        const headers = new HttpHeaders().set('Content-Type', 'application/json; charset=utf-8')
            .set('Authorization',`Bearer ${this.authServiceJwt.getToken}`);
        return this.httpClientModule.post<T>(this.baseUrl + destinationUrl, postViewModel, { headers });
    }

    // This method is to post Data and Get Response Data in two different type without JWT Token
    public GenericHttpPostWithOutToken<T,TE>(postViewModel: TE, destinationUrl: string): Observable<T> {
        const headers = new HttpHeaders().set('Content-Type', 'application/json; charset=utf-8');
        return this.httpClientModule.post<T>(this.baseUrl + destinationUrl, postViewModel, { headers });
    }

    public GenericHttpGet<T>(destinationUrl: string): Observable<T> {
        const headers = new HttpHeaders().set('Content-Type', 'application/json')
            .set('Authorization',`Bearer ${this.authServiceJwt.getToken}`);
        return this.httpClientModule.get<T>(this.baseUrl + destinationUrl, { headers });
    }

    public GenericHttpDelete<T>(destinationUrl: string): Observable<T> {
        const headers = new HttpHeaders().set('Content-Type', 'application/json')
            .set('Authorization',`Bearer ${this.authServiceJwt.getToken}`);
        return this.httpClientModule.delete<T>(this.baseUrl + destinationUrl, { headers });
    }
}

admin.user.component.ts file

private getUsersHttpCall(): void {
    this.spinnerProgress = true;
    this.genericHttpService.GenericHttpGet<GenericResponseObject<UserViewModel[]>>(this.getAdminUserUrl).subscribe(data => {
      if (data.isSuccess) {
        this.genericResponseObject.data = data.data;
        this.dataSource = this.genericResponseObject.data
        this.spinnerProgress = false;
      }

    }, error => {
      console.log(error);
      this.spinnerProgress = false;
    });
  }