GSON ¼òµ¥Ê¹ÓÃ

public class Student {  
    private int id;  
    private String name;  
    private Date birthDay;  

    public int getId() {  
        return id;  
    }  

    public void setId(int id) {  
        this.id = id;  
    }  

    public String getName() {  
        return name;  
    }  

    public void setName(String name) {  
        this.name = name;  
    }  

    public Date getBirthDay() {  
        return birthDay;  
    }  

    public void setBirthDay(Date birthDay) {  
        this.birthDay = birthDay;  
    }  

    @Override  
    public String toString() {  
        return "Student [birthDay=" + birthDay + ", id=" + id + ", name="  
                + name + "]";  
    }  

}  

import java.util.ArrayList;  
import java.util.Date;  
import java.util.List;  

import com.google.gson.Gson;  
import com.google.gson.reflect.TypeToken;  

public class GsonTest1 {  

    public static void main(String[] args) {  
        Gson gson = new Gson();  

        Student student1 = new Student();  
        student1.setId(1);  
        student1.setName("ÀîÀ¤");  
        student1.setBirthDay(new Date());  

        // //////////////////////////////////////////////////////////  
        System.out.println("----------¼òµ¥¶ÔÏóÖ®¼äµÄת»¯-------------");  
        // ¼òµ¥µÄbeanתΪjson  
        String s1 = gson.toJson(student1);  
        System.out.println("¼òµ¥Beanת»¯ÎªJson===" + s1);  

        // jsonתΪ¼òµ¥Bean  
        Student student = gson.fromJson(s1, Student.class);  
        System.out.println("JsonתΪ¼òµ¥Bean===" + student);  
        // ½á¹û:  
        // ¼òµ¥Beanת»¯ÎªJson==={"id":1,"name":"ÀîÀ¤","birthDay":"Jun 22, 2012 8:27:52 AM"}  
        // JsonתΪ¼òµ¥Bean===Student [birthDay=Fri Jun 22 08:27:52 CST 2012, id=1,  
        // name=ÀîÀ¤]  
        // //////////////////////////////////////////////////////////  

        Student student2 = new Student();  
        student2.setId(2);  
        student2.setName("²Ü¹óÉú");  
        student2.setBirthDay(new Date());  

        Student student3 = new Student();  
        student3.setId(3);  
        student3.setName("Áø²¨");  
        student3.setBirthDay(new Date());  

        List<Student> list = new ArrayList<Student>();  
        list.add(student1);  
        list.add(student2);  
        list.add(student3);  

        System.out.println("----------´ø·ºÐ͵ÄListÖ®¼äµÄת»¯-------------");  
        // ´ø·ºÐ͵Älistת»¯Îªjson  
        String s2 = gson.toJson(list);  
        System.out.println("´ø·ºÐ͵Älistת»¯Îªjson==" + s2);  

        // jsonתΪ´ø·ºÐ͵Älist  
        List<Student> retList = gson.fromJson(s2,  
                new TypeToken<List<Student>>() {  
                }.getType());  
        for (Student stu : retList) {  
            System.out.println(stu);  
        }  

        // ½á¹û:  
        // ´ø·ºÐ͵Älistת»¯Îªjson==[{"id":1,"name":"ÀîÀ¤","birthDay":"Jun 22, 2012 8:28:52 AM"},{"id":2,"name":"²Ü¹óÉú","birthDay":"Jun 22, 2012 8:28:52 AM"},{"id":3,"name":"Áø²¨","birthDay":"Jun 22, 2012 8:28:52 AM"}]  
        // Student [birthDay=Fri Jun 22 08:28:52 CST 2012, id=1, name=ÀîÀ¤]  
        // Student [birthDay=Fri Jun 22 08:28:52 CST 2012, id=2, name=²Ü¹óÉú]  
        // Student [birthDay=Fri Jun 22 08:28:52 CST 2012, id=3, name=Áø²¨]  

    }  
}  

package com.gdsc.core.adapter;  

import java.lang.reflect.Type;  
import java.sql.Timestamp;  

import com.google.gson.JsonDeserializationContext;  
import com.google.gson.JsonDeserializer;  
import com.google.gson.JsonElement;  
import com.google.gson.JsonParseException;  
import com.google.gson.JsonPrimitive;  
import com.google.gson.JsonSerializationContext;  
import com.google.gson.JsonSerializer;  

/** 
 * Gson TypeAdapter 
 * ʵÏÖÁË Timestamp ÀàµÄ json »¯ 
 * @author linwei 
 * 
 */  
public class TimestampAdapter implements JsonSerializer<Timestamp>, JsonDeserializer<Timestamp> {  

    @Override  
    public Timestamp deserialize(JsonElement json, Type typeOfT,  
            JsonDeserializationContext context) throws JsonParseException {  
        if(json == null){  
            return null;  
        } else {  
            try {  
                return new Timestamp(json.getAsLong());  
            } catch (Exception e) {  
                return null;  
            }  
        }  
    }  

    @Override  
    public JsonElement serialize(Timestamp src, Type typeOfSrc,  
            JsonSerializationContext context) {  
        String value = "";  
        if(src != null){  
            value = String.valueOf(src.getTime());  
        }  
        return new JsonPrimitive(value);  
    }  

}   

Gson gson = new GsonBuilder()  
                    .registerTypeAdapter(Timestamp.class, new TimestampAdapter())  
                    .create();