Angular 8大超时

分类：编程问答

如何解决Angular 8大超时

我遇到了Angular 8应用的超时问题。我的应用程序需要将POST查询发送到一个Java后端服务器，该服务器将处理一个脚本7-8分钟。该Java应用程序将继续处理，但是由于超时，我将无法读取响应。在此链接Default and specific request timeout中的解决方案中，我能够减少超时。不幸的是，当我设置较大的超时值（900000）时，我在4分钟后遇到超时问题。当我用Postman测试POST查询时，我没有遇到问题。

这是HttpInterceptor。

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

export const DEFAULT_TIMEOUT = new InjectionToken<number>('defaultTimeout');

@Injectable()
export class TimeoutInterceptor implements HttpInterceptor {
  constructor(@Inject(DEFAULT_TIMEOUT) protected defaultTimeout: number) {
  }

  intercept(req: HttpRequest<any>,next: HttpHandler): Observable<HttpEvent<any>> {
    return next.handle(req).pipe(timeout(900000));
  }
}

app.modules 

  providers: [
    [{ provide: HTTP_INTERCEPTORS,useClass: TimeoutInterceptor,multi: true }],[{ provide: DEFAULT_TIMEOUT,useValue: 900000 }],...
  ],

我的服务

  import(docType:any,docContent:any){
    let params =  new HttpParams();
    params = params.append('docType',docType);
    params = params.append('docContent',docContent);
    return this.http.post<any>(`${BASE_PATH}/repriseManager/importAgreements`,{docType,docContent});
  }

控制台日志

net::ERR_EMPTY_RESPONSE
scheduleTask    @   zone.js:3372
push../node_modules/zone.js/dist/zone.js.ZoneDelegate.scheduleTask  @   zone.js:410
onScheduleTask  @   zone.js:301
push../node_modules/zone.js/dist/zone.js.ZoneDelegate.scheduleTask  @   zone.js:404
push../node_modules/zone.js/dist/zone.js.Zone.scheduleTask  @   zone.js:238
push../node_modules/zone.js/dist/zone.js.Zone.scheduleMacroTask @   zone.js:261
scheduleMacroTaskWithCurrentZone    @   zone.js:1194
(anonymous) @   zone.js:3405
proto.<computed>    @   zone.js:1518
(anonymous) @   http.js:1792
push../node_modules/rxjs/_esm5/internal/Observable.js.Observable._trySubscribe  @   Observable.js:43
push../node_modules/rxjs/_esm5/internal/Observable.js.Observable.subscribe  @   Observable.js:29
push../node_modules/rxjs/_esm5/internal/operators/tap.js.DoOperator.call    @   tap.js:18
push../node_modules/rxjs/_esm5/internal/Observable.js.Observable.subscribe  @   Observable.js:24
push../node_modules/rxjs/_esm5/internal/operators/catchError.js.CatchOperator.call  @   catchError.js:18
push../node_modules/rxjs/_esm5/internal/Observable.js.Observable.subscribe  @   Observable.js:24
push../node_modules/rxjs/_esm5/internal/operators/timeoutWith.js.TimeoutWithOperator.call   @   timeoutWith.js:25
push../node_modules/rxjs/_esm5/internal/Observable.js.Observable.subscribe  @   Observable.js:24
(anonymous) @   subscribeTo.js:21
subscribeToResult   @   subscribeToResult.js:11
push../node_modules/rxjs/_esm5/internal/operators/mergeMap.js.MergeMapSubscriber._innerSub  @   mergeMap.js:74
push../node_modules/rxjs/_esm5/internal/operators/mergeMap.js.MergeMapSubscriber._tryNext   @   mergeMap.js:68
push../node_modules/rxjs/_esm5/internal/operators/mergeMap.js.MergeMapSubscriber._next  @   mergeMap.js:51
push../node_modules/rxjs/_esm5/internal/Subscriber.js.Subscriber.next   @   Subscriber.js:53
(anonymous) @   scalar.js:5
push../node_modules/rxjs/_esm5/internal/Observable.js.Observable._trySubscribe  @   Observable.js:43
push../node_modules/rxjs/_esm5/internal/Observable.js.Observable.subscribe  @   Observable.js:29
push../node_modules/rxjs/_esm5/internal/operators/mergeMap.js.MergeMapOperator.call @   mergeMap.js:29
push../node_modules/rxjs/_esm5/internal/Observable.js.Observable.subscribe  @   Observable.js:24
push../node_modules/rxjs/_esm5/internal/operators/catchError.js.CatchOperator.call  @   catchError.js:18
push../node_modules/rxjs/_esm5/internal/Observable.js.Observable.subscribe  @   Observable.js:24
push../node_modules/rxjs/_esm5/internal/operators/catchError.js.CatchOperator.call  @   catchError.js:18
push../node_modules/rxjs/_esm5/internal/Observable.js.Observable.subscribe  @   Observable.js:24
(anonymous) @   subscribeTo.js:21
subscribeToResult   @   subscribeToResult.js:11
push../node_modules/rxjs/_esm5/internal/operators/mergeMap.js.MergeMapSubscriber._innerSub  @   mergeMap.js:74
push../node_modules/rxjs/_esm5/internal/operators/mergeMap.js.MergeMapSubscriber._tryNext   @   mergeMap.js:68
push../node_modules/rxjs/_esm5/internal/operators/mergeMap.js.MergeMapSubscriber._next  @   mergeMap.js:51
push../node_modules/rxjs/_esm5/internal/Subscriber.js.Subscriber.next   @   Subscriber.js:53
(anonymous) @   scalar.js:5
push../node_modules/rxjs/_esm5/internal/Observable.js.Observable._trySubscribe  @   Observable.js:43
push../node_modules/rxjs/_esm5/internal/Observable.js.Observable.subscribe  @   Observable.js:29
push../node_modules/rxjs/_esm5/internal/operators/mergeMap.js.MergeMapOperator.call @   mergeMap.js:29
push../node_modules/rxjs/_esm5/internal/Observable.js.Observable.subscribe  @   Observable.js:24
push../node_modules/rxjs/_esm5/internal/operators/filter.js.FilterOperator.call @   filter.js:15
push../node_modules/rxjs/_esm5/internal/Observable.js.Observable.subscribe  @   Observable.js:24
push../node_modules/rxjs/_esm5/internal/operators/map.js.MapOperator.call   @   map.js:18
push../node_modules/rxjs/_esm5/internal/Observable.js.Observable.subscribe  @   Observable.js:24
push../src/app/features/dashboard/search-contract/contract-search-contract.component.ts.DContractSearchContractComponent.import @   contract-search-cont…ct.component.ts:180
eval    @   DContractSearchContractComponent.html:87
handleEvent @   core.js:29239
callWithDebugContext    @   core.js:30309
debugHandleEvent    @   core.js:30036
dispatchEvent   @   core.js:19859
(anonymous) @   core.js:28448
(anonymous) @   platform-browser.js:1032
push../node_modules/zone.js/dist/zone.js.ZoneDelegate.invokeTask    @   zone.js:423
onInvokeTask    @   core.js:26247
push../node_modules/zone.js/dist/zone.js.ZoneDelegate.invokeTask    @   zone.js:422
push../node_modules/zone.js/dist/zone.js.Zone.runTask   @   zone.js:195
push../node_modules/zone.js/dist/zone.js.ZoneTask.invokeTask    @   zone.js:498
invokeTask  @   zone.js:1693
globalZoneAwareCallback

我在做什么错了？

谢谢

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