struts2开发action 的三种方法

1、继承ActionSupport

public class UserAction extends ActionSupport {    // Action中业务处理方法    public String login() {        System.out.println("UserAction.login()");//      return "success";        return SUCCESS;    }}

 

 

2、实现Action

public class UserAction3 implements Action {    // Action中业务处理方法    public String login() {        System.out.println("UserAction.login()");        return "success";    }    @Override    public String execute() throws Exception {        return null;    }}

 

 

3、既不继承也不实现任何的方法

public class UserAction {    private String userName;    public void setUserName(String userName) {        this.userName = userName;    }    // Action中业务处理方法    public String login() {        System.out.println("UserAction.login()" + userName);        return "login";    }    public String register() {        System.out.println("register()" + userName);        return "register";    }}

 

 

 

动态方法调用