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gxw6
9年前发布

android Json解析全

方式一

1、实体类


public class Person {     private int age;   private String name;     public Person(int age, String name) {    super();    this.age = age;    this.name = name;   }     @Override   public String toString() {    return "Person [age=" + age + ", name=" + name + "]";   }     public int getAge() {    return age;   }     public void setAge(int age) {    this.age = age;   }     public String getName() {    return name;   }     public void setName(String name) {    this.name = name;   }     public Person() {    // TODO Auto-generated constructor stub   }    }
2、服务类



public class JsonList {     public JsonList() {    // TODO Auto-generated constructor stub   }     public static List<Person> getList() {    List<Person> list = new ArrayList<Person>();    list.add(new Person(1002,"李四2"));    list.add(new Person(1003,"李四3"));    list.add(new Person(1001,"李四1"));    return list;   }   public static Person getPerson(){    return new Person(1002,"李四2");    }  }

import net.sf.json.JSON;  import net.sf.json.JSONArray;  import net.sf.json.JSONObject;  import net.sf.json.JSONSerializer;    public class JsonTools {     public JsonTools() {    // TODO Auto-generated constructor stub   }     public static String getString(Person person) {    JSON json = JSONSerializer.toJSON(JsonList.getPerson());    return json.toString();   }     /**    *     * @param msgString    * @return    */   public static Person getPerson(String msgString) {    Person person = new Person();    JSONArray array = new JSONArray();    array.add(msgString);    JSONObject obj = array.getJSONObject(0);    // System.out.println(obj.get("age"));    // System.out.println(obj.get("name"));    person.setAge(obj.getInt("age"));    person.setName(obj.getString("name"));    return person;   }     public static String getListString(List<Person> listPersons) {    JSON json = JSONSerializer.toJSON(listPersons);    return json.toString();   }        /**    * 将一个json格式的字符串转换成行对应的对象    * @param str    * @return    */   public static List<Person> getPersons(String str) {    List<Person> list = new ArrayList<Person>();    JSONArray array = new JSONArray();    array.add(str);    JSONArray array2 = array.getJSONArray(0);    for (int i = 0; i <array2.size(); i++) {     JSONObject jsonObject =  array2.getJSONObject(i);     Person person = new Person();     person.setAge(jsonObject.getInt("age"));     person.setName(jsonObject.getString("name"));     list.add(person);    }    return list;   }      }  



方式二

1、实体类


public class Person {     private int age;   private String name;     public Person(int age, String name) {    super();    this.age = age;    this.name = name;   }     @Override   public String toString() {    return "Person [age=" + age + ", name=" + name + "]";   }     public int getAge() {    return age;   }     public void setAge(int age) {    this.age = age;   }     public String getName() {    return name;   }     public void setName(String name) {    this.name = name;   }     public Person() {    // TODO Auto-generated constructor stub   }    }

2、服务类



public class JsonList {     public JsonList() {    // TODO Auto-generated constructor stub   }     public static List<Person> getList() {    List<Person> list = new ArrayList<Person>();    list.add(new Person(1002,"李四2"));    list.add(new Person(1003,"李四3"));    list.add(new Person(1001,"李四1"));    return list;   }   public static Person getPerson(){    return new Person(1002,"李四2");    }  }  


import net.sf.json.JSON;  import net.sf.json.JSONArray;  import net.sf.json.JSONObject;  import net.sf.json.JSONSerializer;    public class JsonTools {     public JsonTools() {    // TODO Auto-generated constructor stub   }     public static String getString(Person person) {    JSON json = JSONSerializer.toJSON(JsonList.getPerson());    return json.toString();   }     /**    *     * @param msgString    * @return    */   public static Person getPerson(String msgString) {    Person person = new Person();    JSONArray array = new JSONArray();    array.add(msgString);    JSONObject obj = array.getJSONObject(0);    // System.out.println(obj.get("age"));    // System.out.println(obj.get("name"));    person.setAge(obj.getInt("age"));    person.setName(obj.getString("name"));    return person;   }     public static String getListString(List<Person> listPersons) {    JSON json = JSONSerializer.toJSON(listPersons);    return json.toString();   }        /**    * 将一个json格式的字符串转换成行对应的对象    * @param str    * @return    */   public static List<Person> getPersons(String str) {    List<Person> list = new ArrayList<Person>();    JSONArray array = new JSONArray();    array.add(str);    JSONArray array2 = array.getJSONArray(0);    for (int i = 0; i <array2.size(); i++) {     JSONObject jsonObject =  array2.getJSONObject(i);     Person person = new Person();     person.setAge(jsonObject.getInt("age"));     person.setName(jsonObject.getString("name"));     list.add(person);    }    return list;   }         }

方式三


1、实体类


public class Person {     private String name;   private int age;   private String address;     public String getName() {    return name;   }     public Person(String name, int age, String address) {    super();    this.name = name;    this.age = age;    this.address = address;   }     @Override   public String toString() {    return "Person [name=" + name + ", age=" + age + ", address=" + address      + "]";   }     public void setName(String name) {    this.name = name;   }     public int getAge() {    return age;   }     public void setAge(int age) {    this.age = age;   }     public String getAddress() {    return address;   }     public void setAddress(String address) {    this.address = address;   }     public Person() {    // TODO Auto-generated constructor stub   }    }  


2、服务类



import com.android.domain.Person;  import com.google.gson.Gson;  import com.google.gson.reflect.TypeToken;    public class GsonTools {     public GsonTools() {    // TODO Auto-generated constructor stub   }     public static String createGsonString(Object object) {    Gson gson = new Gson();    String gsonString = gson.toJson(object);    return gsonString;   }     public static <T> T changeGsonToBean(String gsonString, Class<T> cls) {    Gson gson = new Gson();    T t = gson.fromJson(gsonString, cls);    return t;   }     public static <T> List<T> changeGsonToList(String gsonString, Class<T> cls) {    Gson gson = new Gson();    List<T> list_person = gson.fromJson(gsonString,      new TypeToken<List<T>>() {      }.getType());    return list_person;   }     public static List<Map<String, Object>> changeGsonToListMaps(String gsonString) {    List<Map<String, Object>> list = null;    Gson gson = new Gson();    list = gson.fromJson(gsonString,      new TypeToken<List<Map<String, Object>>>() {      }.getType());    return list;   }         }  


方式四


1、实体类


public class Person {     private String name;   private int age;   private String address;     public String getName() {    return name;   }     public Person(String name, int age, String address) {    super();    this.name = name;    this.age = age;    this.address = address;   }     @Override   public String toString() {    return "Person [name=" + name + ", age=" + age + ", address=" + address      + "]";   }     public void setName(String name) {    this.name = name;   }     public int getAge() {    return age;   }     public void setAge(int age) {    this.age = age;   }     public String getAddress() {    return address;   }     public void setAddress(String address) {    this.address = address;   }     public Person() {    // TODO Auto-generated constructor stub   }    }  


2、服务类

import com.alibaba.fastjson.JSON;  import com.alibaba.fastjson.TypeReference;  import com.alibaba.fastjson.asm.Type;  import com.alibaba.fastjson.util.TypeUtils;    public class FastJsonTools {     public FastJsonTools() {    // TODO Auto-generated constructor stub   }     public static String createJsonString(Object object) {    String jsonString = JSON.toJSONString(object);    return jsonString;   }     public static <T> T createJsonBean(String jsonString, Class<T> cls) {    T t = JSON.parseObject(jsonString, cls);    return t;   }     public static <T> List<T> createJsonToListBean(String jsonString,     Class<T> cls) {    List<T> list = null;    list = JSON.parseArray(jsonString, cls);    return list;   }     /**    * @param jsonString    * @return    */   public static List<Map<String, Object>> createJsonToListMap(     String jsonString) {    List<Map<String, Object>> list2 = JSON.parseObject(jsonString,      new TypeReference<List<Map<String, Object>>>() {      });    return list2;   }     /**    * @param args    */   public static void main(String[] args) {    // TODO Auto-generated method stub    // Person person1 = new Person("张三1", 24, "北京1");    // Person person2 = new Person("张三2", 23, "北京2");    // List<Person> list = new ArrayList<Person>();    // list.add(person1);    // list.add(person2);    List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();    Map<String, Object> map = new HashMap<String, Object>();    map.put("name", "jack");    map.put("age", 23);    Map<String, Object> map2 = new HashMap<String, Object>();    map2.put("name", "rose");    map2.put("age", 24);    list.add(map);    list.add(map2);      String jsonString = JSON.toJSONString(list);    System.out.println(jsonString);    // JSON.parseArray(arg0, arg1)    List<Map<String, Object>> list2 = JSON.parseObject(jsonString,      new TypeReference<List<Map<String, Object>>>() {      });    // List<Person> lists = JSON.parseArray(arg0, arg1);    System.out.println(list2.toString());     }    }