Angular 5- Response HttpInterceptor -超时重试(504)

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

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

    return next.handle(request).pipe(
      timeout(timeoutDuration), // 设置超时时间
      retry(2), // 设置重试次数为2次
      catchError((error: HttpErrorResponse) => {
        if (error.status === 504) {
          // 在这里进行重试逻辑
          return next.handle(request);
        } else {
          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 { }