查看json数据详情链接：JSON在线解析及格式化验证 - JSON.cn

相比json解析，Gson解析更高效简洁

先看看json解析

      JSONObject object = new JSONObject(s);String succ= object.getString("success");

JSONArray barray = object.getJSONArray("list");
for (int b = 0;b<barray.length();b++){JSONObject jsonObject = barray.getJSONObject(b);String title = jsonObject.getString("title");String Startdate = jsonObject.getString("Startdate");String placeCode = jsonObject.getString("placeCode");String readType = jsonObject.getString("readType");if (jsonObject.getString("readType").equals("未读")){}MiniNewsEntity entity1 = new MiniNewsEntity();entity1.setStartdate(Startdate);entity1.setTitle(title);entity1.setPlaceCode(placeCode);entity1.setStatus(readType);barEntityList.add(entity1);
}

开始Gson解析

添加Gson依赖

implementation "com.google.code.gson:gson:2.8.2"

implementation 'com.google.code.gson:gson:2.9.1'

 

以一下json为解析对象

{"apkPath":"http://61.145.196.120/update/ywAPP/app-release.apk","version":26,"content":"1.修复自动更新bug"}

1、创建bean工具类

/*** 作者：created by meixi* 邮箱：13164716840@163.com* 日期：2018/11/2 09*/
public class TestGson {private  String apkPath;private  String version;private  String content;public String getApkPath() {return apkPath;}public void setApkPath(String apkPath) {this.apkPath = apkPath;}public String getVersion() {return version;}public void setVersion(String version) {this.version = version;}public String getContent() {return content;}public void setContent(String content) {this.content = content;}
}

2、开始解析

String s = "{"apkPath":"http://61.145.196.120/update/ywAPP/app-release.apk","version":26,"content":"1.修复自动更新bug"}";

                    Gson gson = new Gson();TestGson userBean =gson.fromJson(s,  new TypeToken<TestGson>() {}.getType());//                    TestGson userBean = gson.fromJson(s, TestGson.class);//第二种写法Log.i("lgq", "wwbb==" + userBean.getContent());

结果：11-02 09:43:53.055 18477-18477/com.tianxinyw.mapclient.liteapp I/lgq: wwbb==1.修复自动更新bug

3、Gson解析数组

{"result":1,"count":3,"page":1,"yeCount":1,"list":[{"readType":"未读","title":"大岭山光顺网吧计费即将到期，请提醒续费！","Startdate":"2018-11-16 23:59:59.0","placeCode":"1897"},{"readType":"未读","title":"大岭山玩不够网吧计费即将到期，请提醒续费！","Startdate":"2018-11-16 23:59:59.0","placeCode":"1887"},{"readType":"未读","title":"大朗盛佳网吧计费即将到期，请提醒续费！","Startdate":"2018-11-03 00:00:00.0","placeCode":"4701"}]}

3/1创建数组单元类

public class list {private  String readType;private  String title;private  String Startdate;public String getReadType() {return readType;}public void setReadType(String readType) {this.readType = readType;}public String getTitle() {return title;}public void setTitle(String title) {this.title = title;}public String getStartdate() {return Startdate;}public void setStartdate(String startdate) {Startdate = startdate;}
}

内部类写法

public static class DataBean implements Serializable {private int id;private int device_id;

private List<DataBean> data;

3/2创建总数据元素类（可只取部分数据）

public class OutsideEntity {private  String yeCount;private  List<com.tianxinyw.mapclient.entitys.list> list = new ArrayList<>();public String getYeCount() {return yeCount;}public void setYeCount(String yeCount) {this.yeCount = yeCount;}public List<com.tianxinyw.mapclient.entitys.list> getList() {return list;}public void setList(List<com.tianxinyw.mapclient.entitys.list> list) {this.list = list;}
}

3/3开始解析json

Gson gson = new Gson();OutsideEntity userBean =gson.fromJson(s,  new TypeToken<OutsideEntity>() {}.getType());List<list> userBeanList = userBean.getList();//单独获取数组集合Log.i("lgq", "re==logtest=====" +userBeanList.get(2).getTitle()+"...."+userBean.getYeCount());

结果是：11-02 13:41:47.907 14188-14188/com.tianxinyw.mapclient.liteapp I/lgq: re==logtest=====大朗盛佳网吧计费即将到期，请提醒续费！....1