Angular-2 TypeError:无法读取属性'；0'；未定义的类型（RESTAPI）

与RESTAPI一起使用

Message.component.ts

export class Message {
  author: string;
  message: string;
  created:string;
 id:number;

}

obj={author:"",message:"",created:"2016-10-22T12:10:45.683",id:0};

template: `
    <h2>My Heroes</h2>
    <ul class="heroes">
      <li *ngFor="let hero of heroes"
        [class.selected]="hero === selectedHero"
        (click)="onSelect(hero)">
        <span class="badge">{{hero.id}}</span> {{hero.name}}
         <button class="delete" (click)="delete(hero); $event.stopPropagation()">X</button>
      </li>
    </ul>
<div *ngIf="selectedHero">
  <h2>
    {{selectedHero.name | uppercase}} is my hero
  </h2>
  <button (click)="gotoDetail()">View Details</button>
</div>
<div>
  <label>Hero name:</label> <input #heroName />
  <button (click)="add(heroName.value)" heroName.value=''>
    Add
  </button>
</div>

*<div>
Author : <input type="text" [(ngModel)]="obj.author"  />
Message : <input type="text" [(ngModel)]="obj.message"  />
<button (click)="addMessage()">Add Message</button>
</div>*

这是（hero.service.ts）

---

Template.component.ts

export class Message {
  author: string;
  message: string;
  created:string;
 id:number;

}

obj={author:"",message:"",created:"2016-10-22T12:10:45.683",id:0};

template: `
    <h2>My Heroes</h2>
    <ul class="heroes">
      <li *ngFor="let hero of heroes"
        [class.selected]="hero === selectedHero"
        (click)="onSelect(hero)">
        <span class="badge">{{hero.id}}</span> {{hero.name}}
         <button class="delete" (click)="delete(hero); $event.stopPropagation()">X</button>
      </li>
    </ul>
<div *ngIf="selectedHero">
  <h2>
    {{selectedHero.name | uppercase}} is my hero
  </h2>
  <button (click)="gotoDetail()">View Details</button>
</div>
<div>
  <label>Hero name:</label> <input #heroName />
  <button (click)="add(heroName.value)" heroName.value=''>
    Add
  </button>
</div>

*<div>
Author : <input type="text" [(ngModel)]="obj.author"  />
Message : <input type="text" [(ngModel)]="obj.message"  />
<button (click)="addMessage()">Add Message</button>
</div>*

模板：`
我的英雄


{{hero.id}{{hero.name}
X


{{selectedHero.name}大写}是我的英雄
查看详细信息
英雄名字：
添加
*
作者：
信息：
添加消息
*

控制台映像链接出错

---

我尝试与POSTMAN一起确保服务器端请求中的RESTAPI实际工作。它与POSTMAN一起工作。我如何修复此错误？请

您能否提供heroes.component.html以查看您的（单击）是如何在html中设置的？您发布的代码不包含

0

，因此错误很可能在其他地方。发布完整代码

（data）=>{this.obj=data；console.log（“SUCCESS”+this.obj）}

更改为

（data）=>{this.heros.push（data）；console.log（this.heros）}

您可以添加

@NgModule

配置吗？您是否正在使用InMemoryWebApp模块？您的错误似乎是由于您没有正确配置InMemoryDbService造成的