Angular 2 从 json 中获取包含对象数组的对象

Question

我从 json 得到了一个包含对象数组的对象，但是 class 没有填充好所以我得到一个定义错误这里是 get :

  getFeatures()  {
    return this.http.get('http://localhost:8080/features')
      .map((response: Response) => response.json())
      .map(({features,Feature}) => new Features(features,Feature));
  }

在这里，我尝试从 class

中获取 class

public getFeatures(){
    this.featureService.getFeatures().subscribe(res => {
    this.featureArray = res.getFeatureArray();
    console.log("Uitkomst: "+ res);
    console.log("Uitkomst array: "+ res.getFeature(0).getID());
    //this.tekst = this.featureArray[0].getID();
    });

}

这里是features.ts:

import {Feature} from "./Feature";
export class Features {

  constructor(public featuress: string , public feature : Feature[]){}

  public getFeature(i : number): Feature{
    return this.feature[i];
  }
  public getFeatureArray(): Feature[]{
    return this.feature;
  }

这里是feature.ts:

export class Feature{

  constructor(public id : string, public name : string, public desciption : string, public keyword : string, public failedTest : boolean){}

  public getID(){
    return this.id;
  }

}

我还尝试将 get 更改为：

  getFeatures()  {
    return this.http.get('http://localhost:8080/features')
      .map((response: Response) => response.json())
      .map(({features,Feature[]}) => new Features(features,Feature[]));
  }

但它说：

, expected

'http://localhost:8080/features'的json输出= {"features":[{"id":"1","name":"feature1","description":"Dit is Feature 1","keyword":"Feature","failed":false},{"id":"2","name":"feature2","description":"Dit is Feature 2","keyword":"Feature","failed":false}]}

Answer 1

我的错在于我把关键特征当成了一个真正的字符串现在我得到了：

getFeatures()  {
    return this.http.get('http://localhost:8080/features')
      .map((response: Response) => response.json())
      .map(({features = [Feature]}) => new Features(features));
  }

这有效。

Angular 2 从 json 中获取包含对象数组的对象

Angular 2 get object with an array of objects from json

json

http

getjson

angular