android-gson(解析json对象，数组等)

发表于:，更新于:，By Sally
大纲
  1. 1. gson 解析json对象
  2. 2. gson 解析json数组
  3. 3. gson 解析json对象中包含json数组

Android利用Gson解析嵌套多层的Json
Gson解析复杂JSON对象

gson 解析json对象

  • key: {} 用对象
  • key: [ {}, {}, {} ] 用数组
  • json
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{
  id: 7,
  name: "北汽新能源-EV系列",
  price: 8.69,
  color: "阿尔卑斯白,米兰银",
  model: "2015款 EV160 轻快版:8.69,2015款 EV160 轻秀版:9.89,2015款 EV200 轻快版:11.89,2015款 EV200 轻秀版:13.69,2015款 EV200 轻享版:15.69",
  recommand: true,
  hide: false,
}
  • bean
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public class ProductBean implements Serializable {
  private int id;
  private String name;
  private double price;
  private String color;
  private String model;
  private boolean recommand;
  private boolean hide;
  ...
  // get() set() toString() 等方法
}
  • gson解析json
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// fromJson() ：参数1，json字符串， 解析目标对象
Gson gson = new Gson();
ProductBean bean = gson.fromJson(str, ProductBean.class);

gson 解析json数组

  • json
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[
  {
    id: 1,
    tp: "iPhone",
    name: "iPhone 6s 国行正品",
    logo: {
      url: "aldfha;ldf"
    },
    model1: "玫瑰粉 金色 银色 深空灰",
    model: "16G:5288 64G:6088 128G:6888",
    price: 5288,
    product_logos: [
      {
        id: 13,
        product_id: 3,
        logo: {
        url: "http://image.uubpay.com/uploads/product_logo/logo/13/iphonedes01.jpg"
        },
        created_at: "2015-11-13T08:35:08.000+08:00",
        updated_at: "2015-11-13T08:35:08.000+08:00"
      },
    ]
  },
  {
    id: 3,
    tp: "iPhone",
    name: "iPhone 6s Plus 国行正品",
    logo: {
      url: "aldfha;ldf"
    },
    model1: "玫瑰粉 金色 银色 深空灰",
    model: "16G:6088 64G:6888 128G:7788",
    price: 6088,
    product_logos: [
      {
        id: 13,
        product_id: 3,
        logo: {
        url: "http://image.uubpay.com/uploads/product_logo/logo/13/iphonedes01.jpg"
        },
        created_at: "2015-11-13T08:35:08.000+08:00",
        updated_at: "2015-11-13T08:35:08.000+08:00"
      },
    ]
  }
]
  • bean
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public class ProductBean implements Serializable {
  private int id;
  private String tp;
  private String name;
  private Logo logo;
  private String model1;
  private String model;
  private double price;
  private List<ProductLogo> product_logos;
  ...
  // get() set() toString() 方法

  public static class Logo implements Serializable {
    private String url;
    ...
  }
  public static class ProductLogo implements Serializable {
    private int id;
    private int product_id;
    private Logo logo;
    ...
  }
}
  • gosn解析json
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List<ProductBean> list = new Gson().fromjson(jsonString, new TypeToken<List<ProductBean>>() {}.getType());

gson 解析json对象中包含json数组

  • json
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{
  recommands: [
    {
      id: 7,
      category_id: 11,
      name: "北汽新能源-EV系列",
      logo: {},
      color: "阿尔卑斯白,米兰银",
      model: "2015款 EV160 轻快版:8.69,2015款 EV160 轻秀版:9.89,2015款 EV200 轻快版:11.89,2015款 EV200 轻秀版:13.69,2015款 EV200 轻享版:15.69",
      car_logos: [
        {
          id: 23,
          car_id: 7,
          logo: {
          url: "http://image.uubpay.com/uploads/admin/car_logo/logo/2016-01-15/23/550x412_ACFP6TMI5THI0008.jpg"
          },
          created_at: "2016-01-15T16:29:26.000+08:00",
          updated_at: "2016-01-15T16:29:26.000+08:00"
        },
        {},
        {},
        {}
      ]
    }
  ],
  brands: [
    {
      id: 31,
      name: "雪佛兰",
      logo: {
      url: "http://image.uubpay.com/uploads/admin/car_brand/logo/2016-03-18/31/U98P33T148D133661F2100DT20060717171902.jpg"
      },
      hide: false,
    },
    {
      id: 31,
      name: "雪佛兰",
      logo: {
      url: "http://image.uubpay.com/uploads/admin/car_brand/logo/2016-03-18/31/U98P33T148D133661F2100DT20060717171902.jpg"
      },
      hide: false,
    },
    { ... },
    { ... },
  ]
}
  • bean
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public class ProductBean implements Serializable {
  private List<Recomman> recommands;
  private List<Brand> brands;
  ...

  public static class Recommans implements Serializable {
    private int id;
    private int category_id;
    private String name;
    private Logo logo;
    private String color;
    private String model;
    private List<CarLogo> car_logos;
    ...
  }
  public static class Brand implements Serializable {
    private int id;
    private String name;
    private Logo logo;
    private boolean hide;
    ...
  }
  public static class Logo implements Serializable {
    private String url;
    ...
  }
  public static class CarLogo implements Serializable {
    private int id;
    private int car_id;
    private Logo logo;
    ...
  }
}
  • gson解析json
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ProductBean bean = new Gson().fromJson(jsonString, new TypeToken<ProductBean>() {}.getType());