Question

成功连接到服务器并成功订阅后无法获取消息

没有看到任何错误，一切都很好，但是更新不起作用

可以在浏览器中看到http://....../testdata个对象数组

module.ts

import {RawDataComponent} from './components/rawdata/rawdata.component';
import {StatusComponent} from './components/status/status.component';
import {StompConfig, StompService} from '@stomp/ng2-stompjs';

const stompConfig: StompConfig = {
  url: 'ws://...../ws',
  headers: {
  },
  heartbeat_in: 0, // Typical value 0 - disabled
  heartbeat_out: 20000, // Typical value 20000 - every 20 seconds
  reconnect_delay: 5000,
  debug: true
};

....
providers: [
    StompService,
    {
      provide: StompConfig,
      useValue: stompConfig
    }
  ],
.....

rawdata.component.ts

  import { Component, OnInit, OnDestroy } from '@angular/core';
  import { Observable } from 'rxjs/Observable';
  import {Message} from '@stomp/stompjs';  
  import { Subscription } from 'rxjs/Subscription';
  import {StompService} from '@stomp/ng2-stompjs';

  private subscription: Subscription;
  public messages: Observable<Message>;
  public subscribed: boolean;

  /** Constructor */
  constructor(private _stompService: StompService) { }

  ngOnInit() {
    this.messages = this._stompService.subscribe('/testdata');
    this.subscription = this.messages.subscribe(this.on_next);
  }

  public on_next = (message: Message) => {
   console.log('message ', message);
  }

在控制台中

Tue Oct 02 2018 20:12:44 GMT+0300 (Москва, стандартное время) "connected to server undefined"
stomp.service.ts:271 Tue Oct 02 2018 20:12:44 GMT+0300 (Москва, стандартное время) "Connected"
stomp.service.ts:271 Tue Oct 02 2018 20:12:44 GMT+0300 (Москва, стандартное время) "Will try sending queued messages "
stomp.service.ts:271 Tue Oct 02 2018 20:12:44 GMT+0300 (Москва, стандартное время) "Will subscribe to /testdata"
stomp.service.ts:271 Tue Oct 02 2018 20:12:44 GMT+0300 (Москва, стандартное время) ">>> SUBSCRIBE
ack:auto
id:sub-0
destination:/testdata

@ stomp / ng2-stompjs /没有收到消息

0 个答案: