Rxjs 具有BehaviorSubject的Angular SharedService在刷新时丢失数据
我创建了sharedService,它可以完美地工作,我可以将数据从一个组件共享到另一个组件(这两个组件在不同的模块中都是不相关的组件)Rxjs 具有BehaviorSubject的Angular SharedService在刷新时丢失数据,rxjs,angular5,subject,behaviorsubject,sharedservices,Rxjs,Angular5,Subject,Behaviorsubject,Sharedservices,我创建了sharedService,它可以完美地工作,我可以将数据从一个组件共享到另一个组件(这两个组件在不同的模块中都是不相关的组件) 数据传输如下: AdminDashboard.Component(更新值)==>conference.Component(获取新的更新值) 问题:刷新conference.component时,我丢失了值 EventService.ts import { Injectable } from '@angular/core'; import { Observa
- 数据传输如下:
import { Injectable } from '@angular/core';
import { Observable, BehaviorSubject } from 'rxjs';
import { importExpr } from '@angular/compiler/src/output/output_ast';
import {Events} from '../models/event.model'
@Injectable()
export class EventService {
private dataSource = new BehaviorSubject(null);
sendMessage(data) {
this.dataSource.next(data);
}
getMessage(): Observable<any> {
return this.dataSource.asObservable();
}
}
conference.component(url/会议)
在这里,我保存消息中的值并绑定到ui
import { Component, OnInit } from '@angular/core';
import { EventService } from'../../shared/sharedServies/eventService.service';
import { Subscription } from 'rxjs/Subscription';
export class ViewconferenceComponent implements OnInit {
message: any;
constructor(private EventService: EventService) {
this.subscription = this.EventService.getMessage().subscribe(message => {
console.log(message)
this.message = message;
});
}
}
问题:
- 当我在/conference页面上获取数据时,在刷新 服务保留值丢失,我不明白会发生什么情况
- 我还需要向sharedService添加json,它将如何实现
import { Component, OnInit } from '@angular/core';
import { EventService } from'../../shared/sharedServies/eventService.service';
import { Subscription } from 'rxjs/Subscription';
export class ViewconferenceComponent implements OnInit {
message: any;
constructor(private EventService: EventService) {
this.subscription = this.EventService.getMessage().subscribe(message => {
console.log(message)
this.message = message;
});
}
}