struts2开发action 的三种方法以及通配符、路径匹配原则、常量

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;
}
}

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;
}
}

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";
}
}