如何使用Angular Http拦截器在Angular中处理请求超时

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

@Injectable()
export class TimeoutInterceptor implements HttpInterceptor {
  intercept(request: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
    const timeoutValue = 5000; // 设置超时时间为5秒

    return next.handle(request).pipe(
      timeout(timeoutValue),
      catchError(error => {
        if (error.name === 'TimeoutError') {
          // 处理超时错误
          console.log('请求超时');
          // 可以抛出一个自定义的错误
          return throwError('请求超时');
        }
        // 如果不是超时错误，则将错误继续抛出
        return throwError(error);
      })
    );
  }
}

import { NgModule } from '@angular/core';
import { HttpClientModule, HTTP_INTERCEPTORS } from '@angular/common/http';
import { TimeoutInterceptor } from './timeout.interceptor';

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