java操作json

import net.sf.json.JSONArray;
import net.sf.json.JSONObject;

public class ReadJson {
	public static void main(String args[]) {
		JSONArray jsonarray;
		JSONObject jsonObj;
		// 读取JSONArray，用下标索引获取
		String array = "["11","22","33"]";
		jsonarray = JSONArray.fromObject(array);
		System.out.println(jsonarray.getString(1)); 
		// 输出为：22

		// 读取JSONObject
		String object = "{"NO1":["44","55","66"],"NO2":{"NO3":"第33个"}}";
		jsonObj = JSONObject.fromObject(object);
		System.out.println("NO1的内容："+jsonObj.get("NO1")); 
		// 输出为：["44","55","66"]

		jsonarray = (JSONArray) (jsonObj.get("NO1"));
		System.out.println(jsonarray.getString(1)); 
		// 输出为：55

		// 用"键"获取值
		jsonObj = (JSONObject) jsonObj.get("NO2");
		System.out.println("NO2的内容："+jsonObj); 
		// 输出为：{"NO3":"第33个"}

	}
}

　　所需jar：

commons-beanutils-1.8.0.jar
commons-collections-3.2.1.jar
commons-lang-2.5.jar
commons-logging-1.1.1 (1).jar
commons-logging-1.1.1.jar
ezmorph-1.0.6.jar
json-lib-2.4-jdk15.jar