struts2 커스텀 인터페이스

실행시 콘솔창

struts-ch5.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>
	<package name="ch5" namespace="/ch5" extends="struts-default">
		<interceptors>
			<interceptor name="timer" class="com.ch5.interceptor.TimerInterceptor" />
			<interceptor name="userDao" class="com.ch5.interceptor.UserDaoInterceptor" />
		</interceptors>
		
		<!-- timer 인터셉터 활용 -->
		<action name="helloWorld" class="com.ch4.action.HelloWorld">
			<interceptor-ref name="timer" />
			<interceptor-ref name="logger" />
			<result name="success">/ch4/hello.jsp</result>
		</action>
		
		<!-- UserDaoInterceptor 활용 -->
		<action name="createUser3" class="com.ch5.action.CreateUser3">
			<interceptor-ref name="prepare" />
			<interceptor-ref name="modelDriven" />
			<interceptor-ref name="params" />
			<interceptor-ref name="userDao" />
			<result name="success">createSuccess.jsp</result>
		</action>
	</package>	
</struts>

com.ch5.interceptor/UserDaoAware

package com.ch5.interceptor;

import com.ch4.dao.UserDao;

public interface UserDaoAware {
	public void setUserDao(UserDao userDao);
}

com.ch5.interceptor/UserDaoInterceptor

package com.ch5.interceptor;

import com.ch4.dao.UserDao;
import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.interceptor.Interceptor;

public class UserDaoInterceptor implements Interceptor{

	UserDao userDao;
	int cnt;

	@Override
	public void init() {
		userDao = new UserDao();
		System.out.println("cnt = "+(++cnt));
	}
	@Override
	public String intercept(ActionInvocation invocation) throws Exception {
		Object action = invocation.getAction();
		if(action instanceof UserDaoAware){
			UserDaoAware userDaoAware = (UserDaoAware) action;
			userDaoAware.setUserDao(userDao);
		}
		return invocation.invoke();
	}

	@Override
	public void destroy() {
		userDao = null;
	}
}

com.ch5.action/CreateUser3

package com.ch5.action;

import com.ch4.dao.UserDao;
import com.ch4.domain.User;
import com.ch5.interceptor.UserDaoAware;
import com.opensymphony.xwork2.Action;
import com.opensymphony.xwork2.ModelDriven;
import com.opensymphony.xwork2.Preparable;

public class CreateUser3 implements Action,Preparable,ModelDriven,UserDaoAware{

	User user;
	UserDao userDao;

	@Override
	public String execute() throws Exception {
		userDao.createUser(user);
		return SUCCESS;
	}

	@Override
	public void setUserDao(UserDao userDao) {
		this.userDao = userDao ;
	}

	@Override
	public Object getModel() {
		return user;
	}

	@Override
	public void prepare() throws Exception {
		user = new User();
	}



}

ch5/createSuccess.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>







사용자를 추가했습니다.

${user}

ch5/userForm3.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>








	이름 : 

	나이 : 

	이메일 : 

	

userDao -> init()메소드 동작이 되면서 intercept() 시작되면서 getAction을 받아오면서 CreateUser3.java를 불러온다
UserDaoAware로 if문으로 캐스팅 가능한지를 보고 불가능하면 빠져나간다

setUserDao가 있는게 확실하면 userDao를 셋팅 

다 완료시 execute() 실행한뒤 return SUCCESS를 하여 result부분에 진입 한뒤 jsp 실행