JSON LIB 日期转换

public class Person {
	private String name; 
    private Date birthday; 

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

    public String getName() { 
        return name; 
    } 

    public void setBirthday(Date birthday) { 
        this.birthday = birthday; 
    } 

    public Date getBirthday() { 
        return birthday; 
    } 

}
 

import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import net.sf.ezmorph.object.DateMorpher;
import net.sf.json.JSONArray;
import net.sf.json.JSONObject;
import net.sf.json.JsonConfig;
import net.sf.json.util.JSONUtils;

/**
 * @author <a href="mailto:[e-mail]">WangYu</a></br>
 * @version 1.0 <br>
 * @since JDK 1.6.0.12 <br>
 */

public class JsonUtil {

	/**页面传至后台时，json数据在request的参数名称*/
	public final static String JSON_ATTRIBUTE = "json";
	public final static String JSON_ATTRIBUTE1 = "json1";
	public final static String JSON_ATTRIBUTE2 = "json2";
	public final static String JSON_ATTRIBUTE3 = "json3";
	public final static String JSON_ATTRIBUTE4 = "json4";
	
	/**
	 * 从一个JSON 对象字符格式中得到一个java对象，形如：
	 * {"id" : idValue, "name" : nameValue, "aBean" : {"aBeanId" : aBeanIdValue, ...}}
	 * @param object
	 * @param clazz
	 * @return
	 */
	public static Object getDTO(String jsonString, Class clazz){
		JSONObject jsonObject = null;
		try{
			setDataFormat2JAVA(); 
			jsonObject = JSONObject.fromObject(jsonString);
		}catch(Exception e){
			e.printStackTrace();
		}
		return JSONObject.toBean(jsonObject, clazz);
	}
	
	/**
	 * 从一个JSON 对象字符格式中得到一个java对象，其中beansList是一类的集合，形如：
	 * {"id" : idValue, "name" : nameValue, "aBean" : {"aBeanId" : aBeanIdValue, ...},
	 * beansList:[{}, {}, ...]}
	 * @param jsonString
	 * @param clazz
	 * @param map 集合属性的类型 (key : 集合属性名, value : 集合属性类型class) eg: ("beansList" : Bean.class)
	 * @return
	 */
	public static Object getDTO(String jsonString, Class clazz, Map map){
		JSONObject jsonObject = null;
		try{
			setDataFormat2JAVA(); 
			jsonObject = JSONObject.fromObject(jsonString);
		}catch(Exception e){
			e.printStackTrace();
		}
		return JSONObject.toBean(jsonObject, clazz, map);
	}
	
	/**
	 * 从一个JSON数组得到一个java对象数组，形如：
	 * [{"id" : idValue, "name" : nameValue}, {"id" : idValue, "name" : nameValue}, ...]
	 * @param object
	 * @param clazz
	 * @return
	 */
	public static Object[] getDTOArray(String jsonString, Class clazz){
		setDataFormat2JAVA();
		JSONArray array = JSONArray.fromObject(jsonString);
		Object[] obj = new Object[array.size()];
		for(int i = 0; i < array.size(); i++){
			JSONObject jsonObject = array.getJSONObject(i);
			obj[i] = JSONObject.toBean(jsonObject, clazz);
		}
		return obj;
	}
	
	/**
	 * 从一个JSON数组得到一个java对象数组，形如：
	 * [{"id" : idValue, "name" : nameValue}, {"id" : idValue, "name" : nameValue}, ...]
	 * @param object
	 * @param clazz
	 * @param map
	 * @return
	 */
	public static Object[] getDTOArray(String jsonString, Class clazz, Map map){
		setDataFormat2JAVA();
		JSONArray array = JSONArray.fromObject(jsonString);
		Object[] obj = new Object[array.size()];
		for(int i = 0; i < array.size(); i++){
			JSONObject jsonObject = array.getJSONObject(i);
			obj[i] = JSONObject.toBean(jsonObject, clazz, map);
		}
		return obj;
	}
	
	/**
	 * 从一个JSON数组得到一个java对象集合
	 * @param object
	 * @param clazz
	 * @return
	 */
	public static List getDTOList(String jsonString, Class clazz){
		setDataFormat2JAVA();
		JSONArray array = JSONArray.fromObject(jsonString);
		List list = new ArrayList();
		for(Iterator iter = array.iterator(); iter.hasNext();){
			JSONObject jsonObject = (JSONObject)iter.next();
			list.add(JSONObject.toBean(jsonObject, clazz));
		}
		return list;
	}
	
	/**
	 * 从一个JSON数组得到一个java对象集合，其中对象中包含有集合属性
	 * @param object
	 * @param clazz
	 * @param map 集合属性的类型
	 * @return
	 */
	public static List getDTOList(String jsonString, Class clazz, Map map){
		setDataFormat2JAVA();
		JSONArray array = JSONArray.fromObject(jsonString);
		List list = new ArrayList();
		for(Iterator iter = array.iterator(); iter.hasNext();){
			JSONObject jsonObject = (JSONObject)iter.next();
			list.add(JSONObject.toBean(jsonObject, clazz, map));
		}
		return list;
	}
	
	/**
	 * 从json HASH表达式中获取一个map，该map支持嵌套功能
	 * 形如：{"id" : "johncon", "name" : "小强"}
	 * 注意commons-collections版本，必须包含org.apache.commons.collections.map.MultiKeyMap
	 * @param object
	 * @return
	 */
	public static Map getMapFromJson(String jsonString) {
		setDataFormat2JAVA();
        JSONObject jsonObject = JSONObject.fromObject(jsonString);
        Map map = new HashMap();
        for(Iterator iter = jsonObject.keys(); iter.hasNext();){
            String key = (String)iter.next();
            map.put(key, jsonObject.get(key));
        }
        return map;
    }
	
	/**
     * 从json数组中得到相应java数组
     * json形如：["123", "456"]
     * @param jsonString
     * @return
     */
    public static Object[] getObjectArrayFromJson(String jsonString) {
        JSONArray jsonArray = JSONArray.fromObject(jsonString);
        return jsonArray.toArray();
    }


	/**
	 * 把数据对象转换成json字符串
	 * DTO对象形如：{"id" : idValue, "name" : nameValue, ...}
	 * 数组对象形如：[{}, {}, {}, ...]
	 * map对象形如：{key1 : {"id" : idValue, "name" : nameValue, ...}, key2 : {}, ...}
	 * @param object
	 * @return
	 */
	public static String getJSONString(Object object) throws Exception{
		String jsonString = null;
		//日期值处理器
		JsonConfig jsonConfig = new JsonConfig();
		jsonConfig.registerJsonValueProcessor(java.util.Date.class, new DateJsonValueProcessor());
		if(object != null){
			if(object instanceof Collection || object instanceof Object[]){
				jsonString = JSONArray.fromObject(object, jsonConfig).toString();
			}else{
				jsonString = JSONObject.fromObject(object, jsonConfig).toString();
			}
		}
		return jsonString == null ? "{}" : jsonString;
	}
	
	private static void setDataFormat2JAVA(){
		//设定日期转换格式
		JSONUtils.getMorpherRegistry().registerMorpher(new DateMorpher(new String[] {"yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss"}));
	}
} 

public class Test {
	public static void main(String[] args) {
		String personData = "{\"birthday\":\"1980/01/01\",\"name\":\"testname\"}";
		JSONObject jsonPerson = JSONObject.fromObject(personData); 
		String[] dateFormats = new String[] {"yyyy/MM/dd"}; 
		JSONUtils.getMorpherRegistry().registerMorpher(new DateMorpher(dateFormats)); 
		Person person = (Person)JSONObject.toBean(jsonPerson, Person.class);
		System.out.println(person.getBirthday());
	}
}