Json练习

一、Json解析

Gradle文件倒入依赖：

compile 'com.google.code.gson:gson:2.8.2'
compile 'com.alibaba:fastjson:1.2.46'
compile 'com.alibaba:fastjson:1.1.68.android'

布局文件：

xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.mrzhao.day6jsonproject.MainActivity">


            android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

                    android:id="@+id/showTv"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_margin="10dp"
            android:textSize="20sp" />

                    android:id="@+id/bt1"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:onClick="onClick"
            android:text="原生解析1"
            tools:ignore="OnClick" />

                    android:id="@+id/bt2"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:onClick="onClick"
            android:text="原生解析2"
            tools:ignore="OnClick" />

                    android:id="@+id/bt3"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:onClick="onClick"
            android:text="原生解析3"
            tools:ignore="OnClick" />

                    android:id="@+id/bt4"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:onClick="onClick"
            android:text="原生解析4"
            tools:ignore="OnClick" />

                    android:id="@+id/bt5"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:onClick="onClick"
            android:text="原生解析5"
            tools:ignore="OnClick" />

                    android:id="@+id/bt6"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:onClick="onClick"
            android:text="原生解析6"
            tools:ignore="OnClick" />

                    android:id="@+id/bt7"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:onClick="onClick"
            android:text="原生解析7"
            tools:ignore="OnClick" />


                    android:id="@+id/bt8"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:onClick="onClick"
            android:text="Gson解析1"
            tools:ignore="OnClick" />

                    android:id="@+id/bt9"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:onClick="onClick"
            android:text="FastJson解析"
            tools:ignore="OnClick" />

    
ScrollView>

Activity：

/**
 * Json   解析
 * 

 * 什么是Json？
 * Json是一种轻量级的 数据交换格式 。  Json数据的本质  就是一个字符串   字符串内的数据是 Json格式的
 * 

 * 对象表示为键值对
 * 数据由逗号分隔
 * 花括号保存对象
 * 方括号保存数组
 * 

 * Json的解析方式：
 * 

 * 1。Json  表示 的是 使用原生的方式进行数据解析 JSONObject 解析对象   JSONArray  解析数组
 * 2。Gson  表示 使用 Json解析工具进行解析   Gson 是 Google 提供的
 * 3。FastJson 表示 使用 Json解析工具进行解析   FastJson 是 alibaba 提供的
 * 

 * GsonFormat  一个AndroidStudio 插件  作用是  能够 根据Json数据 生成实体类
 *
 *
 * Gson  构造方法只有一个！
 * gson.fromJson（String json,Class） 解析 对象
 * gson.fromJson(String json, Type type) 解析 数组
 * Type 使用 TypeToken getType 的方式获取到
 *
 *
 * FastJson
 * 使用JSON的静态方法
 * JSON.parseJson(String json, Class);  返回值是一个Bean
 * JSON.parseArray(String json.Class);  返回值是一个List<>
 */
public class MainActivity extends AppCompatActivity {

    String json1 = "{'address':\"北京市\",\"id\":1001,\"name\":\"Tom\"}";

    String json2 = "{\"person\":{\"address\":\"北京市\",\"id\":1001,\"name\":\"Tom\"}}";

    String json3 = "{\"person1\":{\"address\":\"北京市\",\"id\":1001,\"name\":\"Tom\"},\"person2\":{\"address\":\"北京市\",\"id\":1001,\"name\":\"Tom\"}}";

    String json4 = "[{\"id\":1001,\"name\":\"Tom\",\"address\":\"北京市\"},{\"id\":1002,\"name\":\"Mary\",\"address\":\"上海市\"}]";

    String json5 = "{\"persons\":[{\"id\":1001,\"name\":\"Tom\",\"address\":\"北京市\"},{\"id\":1002,\"name\":\"Mary\",\"address\":\"上海市\"}]}";

    String json6 = "[1,2,3,4,5,6,7,8,9,0]";

    String json7 = "{\"ret\":1,\"data\":[{\"id\":\"8289\",\"title\":\"\\u6cb9\\u7116\\u5927\\u867e\",\"pic\":\"http:\\/\\/www.qubaobei.com\\/ios\\/cf\\/uploadfile\\/132\\/9\\/8289.jpg\",\"collect_num\":\"1659\",\"food_str\":\"\\u5927\\u867e \\u8471 \\u751f\\u59dc \\u690d\\u7269\\u6cb9 \\u6599\\u9152\",\"num\":1659},{\"id\":\"2127\",\"title\":\"\\u56db\\u5ddd\\u56de\\u9505\\u8089\",\"pic\":\"http:\\/\\/www.qubaobei.com\\/ios\\/cf\\/uploadfile\\/132\\/3\\/2127.jpg\",\"collect_num\":\"1585\",\"food_str\":\"\\u732a\\u8089 \\u9752\\u849c \\u9752\\u6912 \\u7ea2\\u6912 \\u59dc\\u7247\",\"num\":1585},{\"id\":\"30630\",\"title\":\"\\u8d85\\u7b80\\u5355\\u8292\\u679c\\u5e03\\u4e01\",\"pic\":\"http:\\/\\/www.qubaobei.com\\/ios\\/cf\\/uploadfile\\/132\\/31\\/30630.jpg\",\"collect_num\":\"1528\",\"food_str\":\"QQ\\u7cd6 \\u725b\\u5976 \\u8292\\u679c\",\"num\":1528},{\"id\":\"9073\",\"title\":\"\\u5bb6\\u5e38\\u7ea2\\u70e7\\u9c7c\",\"pic\":\"http:\\/\\/www.qubaobei.com\\/ios\\/cf\\/uploadfile\\/132\\/10\\/9073.jpg\",\"collect_num\":\"1419\",\"food_str\":\"\\u9c9c\\u9c7c \\u59dc \\u8471 \\u849c \\u82b1\\u6912\",\"num\":1419},{\"id\":\"10097\",\"title\":\"\\u5bb6\\u5e38\\u714e\\u8c46\\u8150\",\"pic\":\"http:\\/\\/www.qubaobei.com\\/ios\\/cf\\/uploadfile\\/132\\/11\\/10097.jpg\",\"collect_num\":\"1405\",\"food_str\":\"\\u8c46\\u8150 \\u65b0\\u9c9c\\u7ea2\\u6912 \\u9752\\u6912 \\u8471\\u82b1 \\u6cb9\",\"num\":1405},{\"id\":\"10509\",\"title\":\"\\u6c34\\u716e\\u8089\\u7247\",\"pic\":\"http:\\/\\/www.qubaobei.com\\/ios\\/cf\\/uploadfile\\/132\\/11\\/10509.jpg\",\"collect_num\":\"1336\",\"food_str\":\"\\u7626\\u732a\\u8089 \\u751f\\u83dc \\u8c46\\u74e3\\u9171 \\u5e72\\u8fa3\\u6912 \\u82b1\\u6912\",\"num\":1336},{\"id\":\"46968\",\"title\":\"\\u7ea2\\u7cd6\\u82f9\\u679c\\u94f6\\u8033\\u6c64\",\"pic\":\"http:\\/\\/www.qubaobei.com\\/ios\\/cf\\/uploadfile\\/132\\/47\\/46968.jpg\",\"collect_num\":\"1245\",\"food_str\":\"\\u94f6\\u8033 \\u82f9\\u679c \\u7ea2\\u7cd6\",\"num\":1245},{\"id\":\"10191\",\"title\":\"\\u9ebb\\u5a46\\u8c46\\u8150\",\"pic\":\"http:\\/\\/www.qubaobei.com\\/ios\\/cf\\/uploadfile\\/132\\/11\\/10191.jpg\",\"collect_num\":\"1214\",\"food_str\":\"\\u8c46\\u8150 \\u8089\\u672b \\u751f\\u62bd \\u767d\\u7cd6 \\u829d\\u9ebb\\u6cb9\",\"num\":1214},{\"id\":\"2372\",\"title\":\"\\u76ae\\u86cb\\u7626\\u8089\\u7ca5\",\"pic\":\"http:\\/\\/www.qubaobei.com\\/ios\\/cf\\/uploadfile\\/132\\/3\\/2372.jpg\",\"collect_num\":\"1147\",\"food_str\":\"\\u5927\\u7c73 \\u76ae\\u86cb \\u732a\\u8089 \\u6cb9\\u6761 \\u9999\\u8471\",\"num\":1147},{\"id\":\"2166\",\"title\":\"\\u8682\\u8681\\u4e0a\\u6811\",\"pic\":\"http:\\/\\/www.qubaobei.com\\/ios\\/cf\\/uploadfile\\/132\\/3\\/2166.jpg\",\"collect_num\":\"1140\",\"food_str\":\"\\u7ea2\\u85af\\u7c89 \\u8089 \\u59dc \\u849c \\u82b1\\u6912\",\"num\":1140},{\"id\":\"2262\",\"title\":\"\\u7cd6\\u918b\\u8089\",\"pic\":\"http:\\/\\/www.qubaobei.com\\/ios\\/cf\\/uploadfile\\/132\\/3\\/2262.jpg\",\"collect_num\":\"1074\",\"food_str\":\"\\u732a\\u8089 \\u7ea2\\u6912 \\u9ec4\\u6912 \\u6d0b\\u8471 \\u86cb\\u6e05\",\"num\":1074},{\"id\":\"9971\",\"title\":\"\\u9c7c\\u9999\\u8c46\\u8150\",\"pic\":\"http:\\/\\/www.qubaobei.com\\/ios\\/cf\\/uploadfile\\/132\\/10\\/9971.jpg\",\"collect_num\":\"1004\",\"food_str\":\"\\u8c46\\u8150 \\u6728\\u8033 \\u80e1\\u841d\\u535c \\u9999\\u8471 \\u756a\\u8304\\u9171\",\"num\":1004},{\"id\":\"10172\",\"title\":\"\\u5e72\\u7178\\u56db\\u5b63\\u8c46\",\"pic\":\"http:\\/\\/www.qubaobei.com\\/ios\\/cf\\/uploadfile\\/132\\/11\\/10172.jpg\",\"collect_num\":\"988\",\"food_str\":\"\\u56db\\u5b63\\u8c46 \\u5e72\\u8fa3\\u6912 \\u849c\\u5934 \\u9171\\u6cb9 \\u7cd6\",\"num\":988},{\"id\":\"2685\",\"title\":\"\\u80e1\\u841d\\u535c\\u8089\\u672b\\u84b8\\u86cb\",\"pic\":\"http:\\/\\/www.qubaobei.com\\/ios\\/cf\\/uploadfile\\/132\\/3\\/2685.jpg\",\"collect_num\":\"917\",\"food_str\":\"\\u80e1\\u841d\\u535c \\u8089 \\u86cb \\u751f\\u62bd \\u76d0\",\"num\":917},{\"id\":\"9972\",\"title\":\"\\u864e\\u76ae\\u9752\\u6912\",\"pic\":\"http:\\/\\/www.qubaobei.com\\/ios\\/cf\\/uploadfile\\/132\\/10\\/9972.jpg\",\"collect_num\":\"889\",\"food_str\":\"\\u9752\\u8fa3\\u6912 \\u5927\\u849c \\u9999\\u918b \\u767d\\u7cd6 \\u751f\\u62bd\",\"num\":889},{\"id\":\"10437\",\"title\":\"\\u53c9\\u70e7\\u6392\\u9aa8\",\"pic\":\"http:\\/\\/www.qubaobei.com\\/ios\\/cf\\/uploadfile\\/132\\/11\\/10437.jpg\",\"collect_num\":\"797\",\"food_str\":\"\\u6392\\u9aa8 \\u674e\\u9526\\u8bb0\\u53c9\\u70e7\\u9171 \\u690d\\u7269\\u6cb9 \\u6e05\\u6c34 \\u6cb9\\u83dc\",\"num\":797},{\"id\":\"2892\",\"title\":\"\\u201c\\u4e94\\u884c\\u201d\\u5f69\\u852c\\u6c64\",\"pic\":\"http:\\/\\/www.qubaobei.com\\/ios\\/cf\\/uploadfile\\/132\\/3\\/2892.jpg\",\"collect_num\":\"756\",\"food_str\":\"\\u9ed1\\u6728\\u8033 \\u7389\\u7c73 \\u725b\\u84a1 \\u80e1\\u841d\\u535c \\u897f\\u5170\\u82b1\",\"num\":756},{\"id\":\"33783\",\"title\":\"\\u7f8e\\u4eba\\u8c46\\u6d46\",\"pic\":\"http:\\/\\/www.qubaobei.com\\/ios\\/cf\\/uploadfile\\/132\\/34\\/33783.jpg\",\"collect_num\":\"753\",\"food_str\":\"\\u9ec4\\u8c46 \\u7ea2\\u8c46 \\u7eff\\u8c46 \\u9ed1\\u8c46 \\u9ed1\\u7c73\",\"num\":753},{\"id\":\"2348\",\"title\":\"\\u9ebb\\u8fa3\\u8089\\u4e1d\\u9762\",\"pic\":\"http:\\/\\/www.qubaobei.com\\/ios\\/cf\\/uploadfile\\/132\\/3\\/2348.jpg\",\"collect_num\":\"753\",\"food_str\":\"\\u9762\\u6761 \\u8089\\u4e1d \\u6dc0\\u7c89 \\u9171\\u6cb9 \\u8fa3\\u6912\",\"num\":753},{\"id\":\"10044\",\"title\":\"\\u571f\\u8c46\\u7096\\u7fc5\\u6839\",\"pic\":\"http:\\/\\/www.qubaobei.com\\/ios\\/cf\\/uploadfile\\/132\\/11\\/10044.jpg\",\"collect_num\":\"752\",\"food_str\":\"\\u571f\\u8c46 \\u7fc5\\u6839 \\u8471 \\u59dc \\u6599\\u9152\",\"num\":752}]}";

    private TextView showTv;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        showTv = (TextView) findViewById(R.id.showTv);

    }

    public void onClick(View view) {
        switch (view.getId()) {
            case R.id.bt1:
                //原生解析   1
                try {
                    //将 Json1 字符串转换成为一个JsonObject 对象
                    JSONObject jsonObject = new JSONObject(json1);

                    //根据键 获取 值
                    String address = jsonObject.getString("address");
                    int id = jsonObject.getInt("id");
                    String name = jsonObject.getString("name");

                    showTv.setText("2： " + address + "__" + id + "__" + name);

                } catch (JSONException e) {
                    e.printStackTrace();
                }
                break;
            case R.id.bt2:
                //原生解析   2

                try {
                    //将Json2 字符串转换成为JSONObject 对象
                    JSONObject object = new JSONObject(json2);
                    // 获取JSONObject 对象里面的Object 对象
                    JSONObject person = object.getJSONObject("person");

                    //根据键 获取 值
                    String address = person.getString("address");
                    int id = person.getInt("id");
                    String name = person.getString("name");
                    //展示出来
                    showTv.setText("2： " + address + "__" + id + "__" + name);
                } catch (JSONException e) {
                    e.printStackTrace();
                }
                break;
            case R.id.bt3:
                //原生解析   3
                try {
                    //将 Json3字符串转换成为JSONObject 对象
                    JSONObject object = new JSONObject(json3);
                    //获取两个子对象
                    JSONObject person1 = object.getJSONObject("person1");
                    JSONObject person2 = object.getJSONObject("person2");


                    //根据键 获取 值
                    String address1 = person1.getString("address");
                    int id1 = person1.getInt("id");
                    String name1 = person1.getString("name");

                    //根据键 获取 值
                    String address2 = person2.getString("address");
                    int id2 = person2.getInt("id");
                    String name2 = person2.getString("name");

                    //展示出来
                    showTv.setText("3： " + address1 + "__" + id1 + "__" + name1 + "\n" + address2 + "__" + id2 + "__" + name2);


                } catch (JSONException e) {
                    e.printStackTrace();
                }

                break;
            case R.id.bt4:
                //原生解析   4  解析数组
                try {
                    //将字符串转换成为JSONArray 对象
                    JSONArray array = new JSONArray(json4);
                    //循环遍历数组
                    for (int i = 0; i < array.length(); i++) {
                        //获取数组中的 第i个元素
                        JSONObject obj = array.getJSONObject(i);

                        //根据键 获取 值
                        String address = obj.getString("address");
                        int id = obj.getInt("id");
                        String name = obj.getString("name");

                        showTv.append("4： " + address + "__" + id + "__" + name + "\n");
                    }

                } catch (JSONException e) {
                    e.printStackTrace();
                }

                break;
            case R.id.bt5:
                //原生解析   5
                try {
                    JSONObject object = new JSONObject(json5);
                    JSONArray persons = object.getJSONArray("persons");

                    //循环遍历
                    for (int i = 0; i < persons.length(); i++) {
                        //获取第i个数据
                        JSONObject obj = persons.getJSONObject(i);

                        //根据键 获取 值
                        String address = obj.getString("address");
                        int id = obj.getInt("id");
                        String name = obj.getString("name");

                        //显示出来
                        showTv.append("5： " + address + "__" + id + "__" + name + "\n");
                    }

                } catch (JSONException e) {
                    e.printStackTrace();
                }
                break;
            case R.id.bt6:
                //原生解析   6
                try {
                    JSONArray array = new JSONArray(json6);
                    for (int i = 0; i < array.length(); i++) {

                        int anInt = array.getInt(i);
                        showTv.append(anInt + "_");
                    }
                } catch (JSONException e) {
                    e.printStackTrace();
                }
                break;
            case R.id.bt7:
                //原生解析   7

                FoodEntity entity = new FoodEntity();
                List  list =  new ArrayList<>();
                try {
                    JSONObject object = new JSONObject(json7);
                    int ret = object.getInt("ret");
                    //存入对象数据
                    entity.setRet(ret);

                    //获取数组
                    JSONArray data = object.getJSONArray("data");
                    //循环遍历
                    for (int i = 0; i < data.length(); i++) {


                        //获取循环中的JSONObject
                        JSONObject obj = data.getJSONObject(i);
                        String id = obj.getString("id");
                        String title = obj.getString("title");
                        String pic = obj.getString("pic");
                        String collect_num = obj.getString("collect_num");
                        String food_str = obj.getString("food_str");
                        int num = obj.getInt("num");

                        //实例化 数组中的对象
                        FoodEntity.DataBean  dataBean = new FoodEntity.DataBean(id,title,pic,collect_num,food_str,num);
                        list.add(dataBean);
                    }
                    entity.setData(list);

                    showTv.setText(entity.toString());
                } catch (JSONException e) {
                    e.printStackTrace();
                }
                break;
            case R.id.bt8:


                //使用Gson解析 gson 的构造方法  只有1个  就是这个无参构造！
                Gson gson = new Gson();
                /*解析   Json 对象的时候
                 *参数1  表示的是 要解析的 Json 格式的 字符串
                 *参数2 表示的是解析完成后的实体类 类型
                 */
                FoodBean foodBean = gson.fromJson(json7, FoodBean.class);
//                showTv.setText(foodBean.toString());
                //将对象转换成为json 格式的 字符串！  表示 生成 Json格式的字符串过程
                String json = gson.toJson(foodBean);

                /*
                 *解析Json数组的时候
                 */

                //先获取  一个Type 类型    数据类型 泛型 是  List< Entity>
                Type type = new TypeToken>(){}.getType();
                //在进行解析
                List people = (List) gson.fromJson(json4, type);
                showTv.setText(people.toString());

                //记住  create的返回值是   Gson 对象
                Gson gson1 = new GsonBuilder().create();
                break;
            case R.id.bt9:
                //FastJson解析
                //解析对象
                FoodBean bean = JSON.parseObject(json7, FoodBean.class);
                //解析数组
                List persons = JSON.parseArray(json4, Person.class);

                showTv.setText(bean.toString()+persons.toString());
                break;
        }
    }
}

二、案例二：

Gradle文件导入依赖

compile 'com.google.code.gson:gson:2.8.2'

布局文件：

xml version="1.0" encoding="utf-8"?>
xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.mrzhao.exam1demo.ActivityA">

            android:layout_width="match_parent"
        android:id="@+id/bt1"
        android:onClick="onClick"
        android:text="按钮1"
        android:layout_height="wrap_content"
        tools:ignore="OnClick" />
            android:layout_width="match_parent"
        android:id="@+id/bt2"
        android:text="按钮2"
        android:onClick="onClick"
        android:layout_height="wrap_content"
        tools:ignore="OnClick" />
            android:layout_width="wrap_content"
        android:textSize="20sp"

        android:id="@+id/show_tv"
        android:layout_margin="10dp"
        android:layout_height="wrap_content" />

Activity：

public class ActivityA extends AppCompatActivity {

    private TextView showTv;
    private  BaWeiEntity baWeiEntity;
    private String json = "{\n" +
            "  \"clazz\": [\n" +
            "    {\n" +
            "      \"code\": \"0100\",\n" +
            "      \"count\": 20\n" +
            "    },\n" +
            "    {\n" +
            "      \"code\": \"0101\",\n" +
            "      \"count\": 21\n" +
            "    },\n" +
            "    {\n" +
            "      \"code\": \"0102\",\n" +
            "      \"count\": 22\n" +
            "    },\n" +
            "    {\n" +
            "      \"code\": \"0103\",\n" +
            "      \"count\": 23\n" +
            "    }\n" +
            "  ],\n" +
            "  \"school\": \"八维\"\n" +
            "}";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        showTv = (TextView) findViewById(R.id.show_tv);
            //设置展示的默认值
        showTv.setText(json);

    }

    public void onClick(View view) {
        switch (view.getId()){
            case R.id.bt1:
                //解析
                Gson gson = new Gson();
                baWeiEntity  = gson.fromJson(json, BaWeiEntity.class);
                break;
            case R.id.bt2:
                //显示出来
                showTv.setText(baWeiEntity.toString());
                break;
        }
    }
}

三：案例三：

Gradle倒入依赖

compile 'com.google.code.gson:gson:2.8.2'

布局文件：

xml version="1.0" encoding="utf-8"?>
xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.mrzhao.exam2demo.MainActivity">
            android:layout_width="match_parent"
        android:text="点击解析"
        android:onClick="onClick"
        android:layout_height="wrap_content"
        tools:ignore="OnClick" />

Activity：

public class MainActivity extends AppCompatActivity {

    private List list = new ArrayList<>();
    private String json = "{\"status\":\"ok\",\"paramz\":{\"feeds\":[{\"id\":299063,\"oid\":288331,\"category\":\"article\",\"data\":{\"subject\":\"上海男子称劝架被戳瞎眼寻证人\",\"summary\":\"近日，上海地铁世纪大道站出站口贴出一张“寻找目击证人”的告示。\",\"cover\":\"/Attachs/Article/288331/2a6dd034cca6434b9eae169c96d5c267_padmini.JPG\",\"pic\":\"\",\"format\":\"txt\",\"changed\":\"2015-09-19 19:42:25\"}},{\"id\":299038,\"oid\":288315,\"category\":\"article\",\"data\":{\"subject\":\"福建一干部驾车连撞3人后逃逸\",\"summary\":\"华安县一名党政干部在驾车连撞3人后逃逸，事发6小时后才向警方投案自首。\",\"cover\":\"/Attachs/Article/288315/b6e86bb108c84332821263bc93369abf_padmini.JPG\",\"pic\":\"\",\"format\":\"txt\",\"changed\":\"2015-09-19 18:03:06\"}},{\"id\":299036,\"oid\":288313,\"category\":\"article\",\"data\":{\"subject\":\"中学防空演练致学生住院\",\"summary\":\"截至目前，仍有学生住院治疗，部分吸入烟尘较少的、反应较轻的学生已经出院。\",\"cover\":\"/Attachs/Article/288313/59232ee8363d440592d71bb61aa31cef_padmini.JPG\",\"pic\":\"\",\"format\":\"txt\",\"changed\":\"2015-09-19 19:09:51\"}},{\"id\":299035,\"oid\":288312,\"category\":\"article\",\"data\":{\"subject\":\"惯偷被抓后自称刘谦高徒\",\"summary\":\"惯偷蒙某以草帽当掩护，从轮渡“转战”到南普陀，专找游客下手。\",\"cover\":\"/Attachs/Article/288312/28ce42849c0c47d48ae646912e2b20bb_padmini.JPG\",\"pic\":\"\",\"format\":\"txt\",\"changed\":\"2015-09-19 17:51:14\"}},{\"id\":299033,\"oid\":288311,\"category\":\"article\",\"data\":{\"subject\":\"男子偷拍被罚赔款 报警求退款\",\"summary\":\"经过近2个小时的调解和教育，该男子再次向女大学生道歉。\",\"cover\":\"/Attachs/Article/288311/f756bcd84b674ce1bb10a9e10145a680_padmini.JPG\",\"pic\":\"\",\"format\":\"txt\",\"changed\":\"2015-09-19 17:47:18\"}},{\"id\":299027,\"oid\":288309,\"category\":\"article\",\"data\":{\"subject\":\"台北老夫妇花60万买墓地不能用\",\"summary\":\"去年老先生因病过世，在下葬前，突然发现这块墓地属于农牧用地，没办法下葬。\",\"cover\":\"/Attachs/Article/288309/cbcb37310f0c450f964f41aac1279935_padmini.JPG\",\"pic\":\"\",\"format\":\"txt\",\"changed\":\"2015-09-19 17:37:41\"}},{\"id\":299008,\"oid\":288298,\"category\":\"article\",\"data\":{\"subject\":\"宁波集体婚礼地铁当“婚车”\",\"summary\":\"19日，宁波轨道交通2号线一期即将试运营之际，一场特别的公益集体婚礼举行\",\"cover\":\"/Attachs/Article/288298/e108df21cb75452890f1a608b1c5181d_padmini.JPG\",\"pic\":\"\",\"format\":\"txt\",\"changed\":\"2015-09-19 17:13:25\"}},{\"id\":299005,\"oid\":288294,\"category\":\"article\",\"data\":{\"subject\":\"4女子离家房子被倒卖蜗居楼道\",\"summary\":\"北京市公安局朝阳分局经侦大队已受理崔文花的报案，目前该案正在调查中。\",\"cover\":\"/Attachs/Article/288294/cee8182e731a4240816e62c162a30a91_padmini.JPG\",\"pic\":\"\",\"format\":\"txt\",\"changed\":\"2015-09-19 17:48:19\"}},{\"id\":299003,\"oid\":288292,\"category\":\"article\",\"data\":{\"subject\":\"纽约女子产极低概率同卵三胞胎\",\"summary\":\"据称，自然受孕并产下同卵三胞胎的概率小到百万分之一。\",\"cover\":\"/Attachs/Article/288292/c3456fe5f50a4f44910c3b41479d909e_padmini.JPG\",\"pic\":\"\",\"format\":\"txt\",\"changed\":\"2015-09-19 17:00:43\"}},{\"id\":298999,\"oid\":288288,\"category\":\"article\",\"data\":{\"subject\":\"大妈火车上脱鞋引发互殴\",\"summary\":\"一位中年大姐脱鞋产生异味，引起对面的年轻女子不满，双方竟然大打出手。\",\"cover\":\"/Attachs/Article/288288/61ce514a12ab4782936bea0a4abecee1_padmini.JPG\",\"pic\":\"\",\"format\":\"txt\",\"changed\":\"2015-09-19 16:55:41\"}},{\"id\":298998,\"oid\":288287,\"category\":\"article\",\"data\":{\"subject\":\"上海男子街头持刀砍伤4名路人\",\"summary\":\"据网友爆料称，浦东张江一男子持刀伤人，4人被砍伤送医救治。\",\"cover\":\"/Attachs/Article/288287/6e74c69a400d4055b6f9070bf229b5f5_padmini.JPG\",\"pic\":\"\",\"format\":\"txt\",\"changed\":\"2015-09-19 16:50:33\"}},{\"id\":298997,\"oid\":288286,\"category\":\"article\",\"data\":{\"subject\":\"男子盗窃后\\\"监视\\\"警察破案被抓\",\"summary\":\"接到客栈报案后，邛崃刑侦大队刑警迅速赶到现场。\",\"cover\":\"/Attachs/Article/288286/b62950e9aff64bc7972fbbcf25ca1ce4_padmini.JPG\",\"pic\":\"\",\"format\":\"txt\",\"changed\":\"2015-09-19 16:46:59\"}},{\"id\":298996,\"oid\":288285,\"category\":\"article\",\"data\":{\"subject\":\"南京一男子闹市仿杰克逊热舞\",\"summary\":\"据围观市民反映，该男子曾在其他地段有过同样举动，疑似患有精神疾病。\",\"cover\":\"/Attachs/Article/288285/760f5a4e8a3a4cb997be165361f40fbf_padmini.JPG\",\"pic\":\"\",\"format\":\"txt\",\"changed\":\"2015-09-19 16:41:41\"}},{\"id\":298989,\"oid\":288274,\"category\":\"article\",\"data\":{\"subject\":\"城管协管员喷水驱赶乞讨老人\",\"summary\":\"相关部门就此解释，城管协管员是不得以才出此下策。\",\"cover\":\"/Attachs/Article/288274/77e034fbd53148c8b0024dce2fd74a3f_padmini.JPG\",\"pic\":\"\",\"format\":\"txt\",\"changed\":\"2015-09-19 16:03:12\"}},{\"id\":298987,\"oid\":288273,\"category\":\"article\",\"data\":{\"subject\":\"哲学硕士网恋被假女友骗70万\",\"summary\":\"其实“她”只是个小学文化的男人，一人饰四角，把重点大学硕士骗得团团转。\",\"cover\":\"/Attachs/Article/288273/776da3e2b8084fb7804b7da1b48e8703_padmini.JPG\",\"pic\":\"\",\"format\":\"txt\",\"changed\":\"2015-09-19 15:57:30\"}},{\"id\":298963,\"oid\":288260,\"category\":\"article\",\"data\":{\"subject\":\"大姐脱鞋熏到女子 火车上互殴\",\"summary\":\"一位中年大姐脱鞋产生异味，引起对面的年轻女子不满，双方大打出手。\",\"cover\":\"/Attachs/Article/288260/857f0347a68e4a24bc9d05564f715584_padmini.JPG\",\"pic\":\"\",\"format\":\"txt\",\"changed\":\"2015-09-19 15:15:34\"}},{\"id\":298962,\"oid\":288258,\"category\":\"article\",\"data\":{\"subject\":\"四川一公交太破雨天需打伞开车\",\"summary\":\"市民爆料称，南充901路公交司机打着伞开车，真佩服司机的敬业精神。\",\"cover\":\"/Attachs/Article/288258/81ddda6bccd9424b800d4320dc23ff7e_padmini.JPG\",\"pic\":\"\",\"format\":\"txt\",\"changed\":\"2015-09-19 15:13:04\"}},{\"id\":298950,\"oid\":288249,\"category\":\"article\",\"data\":{\"subject\":\"2女生被撞死 母亲路中抱紧尸体\",\"summary\":\"福建泉州，两名初中女生上学路上被撞身亡，司机逃逸被逼停。\",\"cover\":\"/Attachs/Article/288249/a169f8f3488c43fea756228f3f9c34af_padmini.JPG\",\"pic\":\"\",\"format\":\"txt\",\"changed\":\"2015-09-19 14:55:06\"}},{\"id\":298949,\"oid\":288248,\"category\":\"article\",\"data\":{\"subject\":\"宁波轨交集体婚礼 地铁当婚车\",\"summary\":\"地铁车厢当婚车，梁祝公园扮婚房,一场特别的公益集体婚礼在宁波举行。\",\"cover\":\"/Attachs/Article/288248/250078f30b9a43e399e3f7c53012034b_padmini.JPG\",\"pic\":\"\",\"format\":\"txt\",\"changed\":\"2015-09-19 14:52:42\"}},{\"id\":298943,\"oid\":288247,\"category\":\"article\",\"data\":{\"subject\":\"南京苹果直营店果粉彻夜排队\",\"summary\":\"9月19日上午，苹果南京首家直营店即将开业，果粉彻夜排队守候。\",\"cover\":\"/Attachs/Article/288247/dd4ee3bbaeb343f59c1bd125808f530d_padmini.JPG\",\"pic\":\"\",\"format\":\"txt\",\"changed\":\"2015-09-19 14:48:44\"}}],\"PageIndex\":1,\"PageSize\":20,\"TotalCount\":27860,\"TotalPage\":1393}}";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    public void onClick(View view) {
        //点击进行解析
        Gson gson = new Gson();
        NewsEntity newsEntity = gson.fromJson(json, NewsEntity.class);

        //先找到数据中的集合
        List feeds = newsEntity.getParamz().getFeeds();
        //循环遍历
        for (int i = 0; i < feeds.size(); i++) {
            //获取每个对象中的 Subject
            String subject = feeds.get(i).getData().getSubject();
            //放到集合中
            list.add(subject);
        }

        //遍历Subject集合
        for (int i = 0; i < list.size(); i++) {
            //将集合中的数据写入文件里
            try {
                //暂时没有学习存储 没有文件路径
                FileOutputStream outputStream = new FileOutputStream(new File("path"));
                String s = list.get(i);
                byte[] bytes = s.getBytes();
                outputStream.write(bytes, 0, bytes.length);
                outputStream.flush();
                outputStream.close();
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}