Struts2中Action类的三种定义方式

1.重写execute方法

package com.zchen.struts.action;

public class RegisterAction {
	
	public String execute() {
		
		return null;
		
	}
}

 

2.继承Action接口

package com.zchen.struts.action;

import com.opensymphony.xwork2.Action;

public class RegisterAction implements Action{
	
	public String execute() {
		
		return null;
		
	}
}

 

3.继承ActionSupport类

package com.zchen.struts.action;

import com.opensymphony.xwork2.ActionSupport;

public class RegisterAction extends ActionSupport{
	private static final long serialVersionUID = -5708073463877873904L;
	public String execute() {
		
		return null;
		
	}
}