import java.util.ArrayList;
import java.util.List;
import net.sf.json.JSONArray;
public class Test {
/**
* 将list 或者map之类转成json
* @param args
*/
public static void main(String[] args) {
UserModel userModel1=new UserModel();
userModel1.setUserName("zhangsan");
userModel1.setUserPass("123");
UserModel userModel2=new UserModel();
userModel2.setUserName("zhangsan");
userModel2.setUserPass("123");
List<UserModel> listUserModel=new ArrayList<UserModel>();
listUserModel.add(userModel1);
listUserModel.add(userModel2);
//list对象转换成json
JSONArray json2 = JSONArray.fromObject(listUserModel);//将java对象转换为json对象
String str2 = json2.toString();//将json对象转换为字符串
System.out.println(str2);
//将字符串转换为json对象,然后根据建得到相应的值
JSONArray jsonObject2 = JSONArray.fromObject(str2);
System.out.println(jsonObject2.get(0));
}
}