commons-beanutils-1.8.0.jar不加这个包 

java.lang.NoClassDefFoundError: org/apache/commons/beanutils/DynaBean 

commons-collections.jar 不加这个包 

java.lang.NoClassDefFoundError: org/apache/commons/collections/map/ListOrderedMap 

commons-lang-2.4.jar不加这个包 

java.lang.NoClassDefFoundError: org/apache/commons/lang/exception/NestableRuntimeException 

commons-logging-1.1.1.jar不加这个包 

java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory 

ezmorph-1.0.4.jar不加这个包 

java.lang.NoClassDefFoundError: net/sf/ezmorph/Morpher 

json-lib-2.3-jdk15.jar不加这个包 

java.lang.NoClassDefFoundError: net/sf/json/JSONObject 

相应jar包可到网上下载，也可以用下面提供的！ 

实例： 

import java.util.ArrayList; 

import java.util.List; 

import net.sf.json.JSONArray; 

public class JsonTest { 

/** 

* @param args 

*/ 

public static void main(String[] args) throws Exception{ 

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

JSONArray jsonArray = JSONArray.fromObject( boolArray );  

System.out.println( jsonArray ); 

List list = new ArrayList();  

list.add( "first" );  

list.add( "second" );  

JSONArray jsonArray2 = JSONArray.fromObject( list );  

System.out.println( jsonArray2 ); 

} 

}