• jakarta commons-lang 2.5
• jakarta commons-beanutils 1.8.0
• jakarta commons-collections 3.2.1
• jakarta commons-logging 1.1.1
• ezmorph 1.0.6

 package com.mai.json;

 import static org.junit.Assert.assertEquals;

 import java.util.ArrayList;

 import java.util.Date;

 import java.util.HashMap;

 import java.util.Iterator;

 import java.util.List;

 import java.util.Map;

 import net.sf.ezmorph.Morpher;

 import net.sf.ezmorph.MorpherRegistry;

 import net.sf.ezmorph.bean.BeanMorpher;

 import net.sf.json.JSONArray;

 import net.sf.json.JSONObject;

 import net.sf.json.util.JSONUtils;

 import org.apache.commons.beanutils.PropertyUtils;

 import org.junit.Test;

 public class JsonLibTest {

     /*

      *  普通类型、List、Collection等都是用JSONArray解析

      *

      *  Map、自定义类型是用JSONObject解析

      *  可以将Map理解成一个对象，里面的key/value对可以理解成对象的属性/属性值

      *  即{key1:value1,key2,value2......}

      *

      * 1.JSONObject是一个name:values集合，通过它的get(key)方法取得的是key后对应的value部分(字符串)

      *         通过它的getJSONObject(key)可以取到一个JSONObject，--> 转换成map,

      *         通过它的getJSONArray(key) 可以取到一个JSONArray ，

      *

      *

      */

     //一般数组转换成JSON

     @Test

     public void testArrayToJSON(){

         boolean[] boolArray = new boolean[]{true,false,true};

         JSONArray jsonArray = JSONArray.fromObject( boolArray );

         System.out.println( jsonArray );

         // prints [true,false,true]

     }

     //Collection对象转换成JSON

     @Test

     public void testListToJSON(){

         List list = new ArrayList();

         list.add( "first" );

         list.add( "second" );

         JSONArray jsonArray = JSONArray.fromObject( list );

         System.out.println( jsonArray );

         // prints ["first","second"]

     }

     //字符串json转换成json， 根据情况是用JSONArray或JSONObject

     @Test

     public void testJsonStrToJSON(){

         JSONArray jsonArray = JSONArray.fromObject( "['json','is','easy']" );

         System.out.println( jsonArray );

         // prints ["json","is","easy"]

     }

     //Map转换成json， 是用jsonObject

     @Test

     public void testMapToJSON(){

         Map map = new HashMap();

         map.put( "name", "json" );

         map.put( "bool", Boolean.TRUE );

         map.put( "int", new Integer(1) );

         map.put( "arr", new String[]{"a","b"} );

         map.put( "func", "function(i){ return this.arr[i]; }" );  

         JSONObject jsonObject = JSONObject.fromObject( map );

         System.out.println( jsonObject );

     }

     //复合类型bean转成成json

     @Test

     public void testBeadToJSON(){

         MyBean bean = new MyBean();

         bean.setId("001");

         bean.setName("银行卡");

         bean.setDate(new Date());

         List cardNum = new ArrayList();

         cardNum.add("农行");

         cardNum.add("工行");

         cardNum.add("建行");

         cardNum.add(new Person("test"));

         bean.setCardNum(cardNum);

         JSONObject jsonObject = JSONObject.fromObject(bean);

         System.out.println(jsonObject);

     }

     //普通类型的json转换成对象

     @Test

     public void testJSONToObject() throws Exception{

         String json = "{name=\"json\",bool:true,int:1,double:2.2,func:function(a){ return a; },array:[1,2]}";

         JSONObject jsonObject = JSONObject.fromObject( json );

         System.out.println(jsonObject);

         Object bean = JSONObject.toBean( jsonObject );

         assertEquals( jsonObject.get( "name" ), PropertyUtils.getProperty( bean, "name" ) );

         assertEquals( jsonObject.get( "bool" ), PropertyUtils.getProperty( bean, "bool" ) );

         assertEquals( jsonObject.get( "int" ), PropertyUtils.getProperty( bean, "int" ) );

         assertEquals( jsonObject.get( "double" ), PropertyUtils.getProperty( bean, "double" ) );

         assertEquals( jsonObject.get( "func" ), PropertyUtils.getProperty( bean, "func" ) );

         System.out.println(PropertyUtils.getProperty(bean, "name"));

         System.out.println(PropertyUtils.getProperty(bean, "bool"));

         System.out.println(PropertyUtils.getProperty(bean, "int"));

         System.out.println(PropertyUtils.getProperty(bean, "double"));

         System.out.println(PropertyUtils.getProperty(bean, "func"));

         System.out.println(PropertyUtils.getProperty(bean, "array"));

         List arrayList = (List)JSONArray.toCollection(jsonObject.getJSONArray("array"));

         for(Object object : arrayList){

             System.out.println(object);

         }

     }

     //将json解析成复合类型对象, 包含List

     @Test

     public void testJSONToBeanHavaList(){

         String json = "{list:[{name:'test1'},{name:'test2'}],map:{test1:{name:'test1'},test2:{name:'test2'}}}";

 //        String json = "{list:[{name:'test1'},{name:'test2'}]}";

         Map classMap = new HashMap();

         classMap.put("list", Person.class);

         MyBeanWithPerson diyBean = (MyBeanWithPerson)JSONObject.toBean(JSONObject.fromObject(json),MyBeanWithPerson.class , classMap);

         System.out.println(diyBean);

         List list = diyBean.getList();

         for(Object o : list){

             if(o instanceof Person){

                 Person p = (Person)o;

                 System.out.println(p.getName());

             }

         }

     }

     //将json解析成复合类型对象, 包含Map

     @Test

     public void testJSONToBeanHavaMap(){

         //把Map看成一个对象

         String json = "{list:[{name:'test1'},{name:'test2'}],map:{testOne:{name:'test1'},testTwo:{name:'test2'}}}";

         Map classMap = new HashMap();

         classMap.put("list", Person.class);

         classMap.put("map", Map.class);

         //使用暗示，直接将json解析为指定自定义对象，其中List完全解析,Map没有完全解析

         MyBeanWithPerson diyBean = (MyBeanWithPerson)JSONObject.toBean(JSONObject.fromObject(json),MyBeanWithPerson.class , classMap);

         System.out.println(diyBean);

         System.out.println("do the list release");

         List<Person> list = diyBean.getList();

         for(Person o : list){

             Person p = (Person)o;

             System.out.println(p.getName());

         }

         System.out.println("do the map release");

         //先往注册器中注册变换器，需要用到ezmorph包中的类

         MorpherRegistry morpherRegistry = JSONUtils.getMorpherRegistry();

         Morpher dynaMorpher = new BeanMorpher( Person.class,  morpherRegistry);

         morpherRegistry.registerMorpher( dynaMorpher );  

         Map map = diyBean.getMap();

         /*这里的map没进行类型暗示，故按默认的，里面存的为net.sf.ezmorph.bean.MorphDynaBean类型的对象*/

         System.out.println(map);

 　　　　　　/*输出:

 　　　　　　　　{testOne=net.sf.ezmorph.bean.MorphDynaBean@f73c1[

 　　　　　　　　  {name=test1}

 　　　　　　　　], testTwo=net.sf.ezmorph.bean.MorphDynaBean@186c6b2[

  　　　　　　　　 {name=test2}

 　　　　　　　　]}

 　　　　　　*/

         List<Person> output = new ArrayList();

         for( Iterator i = map.values().iterator(); i.hasNext(); ){

             //使用注册器对指定DynaBean进行对象变换

            output.add( (Person)morpherRegistry.morph( Person.class, i.next() ) );

         }  

         for(Person p : output){

             System.out.println(p.getName());

 　　　　　　　　/*输出:

 　　　　　　　　　　test1

 　　　　　　　　　　test2

 　　　　　　　　*/

         }

     }

 }

 .下面提供上面例子所需的资源，包括jar包和代码

 /Files/mailingfeng/json-lib/json-lib用例所需jar包和java类.rar