BeanUtils测试不通过

[yousite1]

以下代码一直测试不通过，复制过去的user2的字段一直为null
请问是怎么回事？

import java.lang.reflect.InvocationTargetException;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import org.apache.commons.beanutils.BeanUtils;

public class Test {
	protected static Log log = LogFactory.getLog(Test.class);
	
	public static void main(String[] args) throws IllegalAccessException, InvocationTargetException {
		User user1 = new User();
		user1.setUsername("郭国强");
		user1.setPassword("654321");
		User user2 = new User();
		BeanUtils.copyProperties(user2, user1);
		log.debug("测试成功！");
		log.debug("用户名：" + user1.getUsername());
		log.debug("密码：" + user1.getPassword());
		log.debug("目标用户名：" + user2.getUsername());
		log.debug("目标密码：" + user2.getPassword());
	}
}

class User {
	private String username;
	private String password;
	
	public User() {}
	/*
	public User(String username, String password) {
		this.username = username;
		this.password = password;
	}
	*/
	
	public String getUsername() {
		return username;
	}
	public void setUsername(String username) {
		this.username = username;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}
	
}

[oven15534]

在我这里测试可以通过，用
System.out.println(user2.getUsername());
System.out.println(user2.getPassword());
可以打印出:
郭国强
654321
是不是你的jar包有问题。
commons-logging.jar
commons-beanutils.jar

[yousite1]

不会吧。我用的是commons-beanutils-core-1.8.0.jar我看过文件，这个JAR里有BeanUtils啊。是不是我用错包了、

[oven15534]

你加个断点，调试一下看看吧

[yousite1]

原来是class不能放在测试程序中，毕竟得是public才行