JSONArray.fromObject(list)的问题
我用了下JSON转换测试,结果报了以下的异常. 应该如何解决啊?
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/lang/exception/NestableRuntimeException
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
at com.yict.jsontest.JsonMytest.main(JsonMytest.java:20)
我的代码如下:
package com.yict.jsontest;
import java.util.ArrayList;
import java.util.List;
import net.sf.json.JSONArray;
public class JsonMytest {
/**
* @param args
*/
public static void main(String[] args) {
List <Student> list = new ArrayList<Student>();
Student s = new Student();
s.setId(2);
s.setName("滴答");
s.setAge("28");
s.setCource("英语");
list.add(s);
JSONArray jsonArray =JSONArray.fromObject(list);
System.out.println(jsonArray.toString());
}
}
JSONArray jsonArray =JSONArray.fromObject(list); 就在这里报错了.