感谢您提前的时间,我试图展示我从当地mongodb系列中提取的一个系列。 http://localhost:8080/player/all是API端点,当我使用postmaster测试它时返回正确的数据。它是一组对象。 HTML仅显示每个对象的[object Object],如:
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
服务或组件有问题吗?
Backend是一个快速/节点应用
player.component.html
<div> {{allPlayers}} </div>
player.component.ts
import { Component, OnInit } from '@angular/core';
import {AuthService} from '../../services/auth.service';
import {PlayerService} from '../../services/player.service';
import {Router} from '@angular/router';
@Component({
selector: 'app-player',
templateUrl: './player.component.html',
styleUrls: ['./player.component.css']
})
export class PlayerComponent implements OnInit {
allPlayers: Array<Object>;
constructor(private authService:AuthService,
private router:Router,
private playerService: PlayerService) { }
ngOnInit() {
this.playerService.getAllPlayers().subscribe(allPlayers => {
this.allPlayers = allPlayers;
},
err => {
console.log(err);
return false;
});
}
}
player.service.ts
import { Injectable } from '@angular/core';
import {Http, Headers} from '@angular/http';
@Injectable()
export class PlayerService {
constructor(private http:Http) {
}
getAllPlayers(){
return this.http.get("http://localhost:8080/player/all")
.map(res => res.json());
}
}
答案 0 :(得分:1)
该变量包含一个对象列表。您正在UI中绑定对象/数组,因此它将[Object Object]称为其字符串表示
要获得所有值,您可以使用* ngFor并获取单个值并显示。
<ul>
<li *ngFor="#player of allPlayers">
{{ player.name }} is {{ player.age }}.
</li>
<ul>
正如您所见
或者@saneetharan建议您可以通过索引值绑定侧数组中对象的个体属性
答案 1 :(得分:0)
当您在模板内显示时,您需要使用 dot
运算符访问属性,或者如果是数组,则使用ngFor。
<div *ngFor="let player of allPlayers">
{{player.firstName}}
</div>
答案 2 :(得分:0)
使用角管
{{allPlayers| json}}