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;}@Overridepublic 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;}@Overridepublic 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;}@Overridepublic 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;}@Overridepublic 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());}}