Angular 2使用组件的自定义HTTP错误处理

import { Injectable } from '@angular/core';
import { HttpEvent, HttpInterceptor, HttpHandler, HttpRequest, HttpResponse, HttpErrorResponse } from '@angular/common/http';
import { Observable, throwError } from 'rxjs';
import { catchError } from 'rxjs/operators';

@Injectable()
export class CustomHttpErrorInterceptor implements HttpInterceptor {
  intercept(request: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
    return next.handle(request).pipe(
      catchError((error: HttpErrorResponse) => {
        // 在这里处理错误逻辑
        console.error('An error occurred:', error);
        // 返回一个可观察对象，可以是一个错误对象或者继续抛出错误
        return throwError(error);
      })
    );
  }
}

import { NgModule } from '@angular/core';
import { HttpClientModule, HTTP_INTERCEPTORS } from '@angular/common/http';
import { CustomHttpErrorInterceptor } from './custom-http-error.interceptor';

@NgModule({
  imports: [
    HttpClientModule
  ],
  providers: [
    {
      provide: HTTP_INTERCEPTORS,
      useClass: CustomHttpErrorInterceptor,
      multi: true
    }
  ]
})
export class AppModule { }