struts 中的创建Action的三种方法

package cn.lonecloud.control;

import com.opensymphony.xwork2.Action;
/**
*
* @author lonecloud
* @Date
* @version
* @Description
*/
public class HelloAction{

public String execute() throws Exception {
System.out.println("scd");
return SUCCESS;
}
public String test(){
System.out.println("test");
return ERROR;
}

}

package cn.lonecloud.control;

import com.opensymphony.xwork2.Action;
/**
*
* @author lonecloud
* @Date
* @version
* @Description
*/
public class HelloAction implements Action{

@Override
public String execute() throws Exception {
System.out.println("scd");
return SUCCESS;
}
public String test(){
System.out.println("test");
return ERROR;
}

}

package cn.lonecloud.control;

import cn.lonecloud.domain.User;

import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;

/**
* 用于对登录拦截器
*
* @author lonecloud
*
*/
/**
* @author lonecloud
*
*/
public class LoginAction extends ActionSupport implements ModelDriven<User> {
/**
*ModelDriven创建一个User实例
*/
private User user=new User();
//实现序列化接口
private static final long serialVersionUID = 1L;

/**
* 登录验证
* @return
*/
public String LoginUI() {
System.out.println(user.getPassword());
if (user.getUserName()==null||"".equals(user.getUserName())) {
this.addFieldError("userName12","用户名出错");
return "LoginUI";
}
return "LoginUI";
}

/* (non-Javadoc)
* @see com.opensymphony.xwork2.ModelDriven#getModel()
* 该方法对于返回model
*/
@Override
public User getModel() {
// TODO Auto-generated method stub
return user;
}
}