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9/27 : MVC 모델2 제작(4/4) 본문

프로젝트 기반 JAVA 응용 SW개발 : 22.07.19~23.01.20/Servlet, JSP

9/27 : MVC 모델2 제작(4/4)

hayoung.dev 2022. 10. 20. 21:56

command.properties에 /deleteForm.do=service.DeleteFormAction 추가

 

src/main/java > service 패키지 > DeleteFormAction.java(class), CommandProcess 상속받음

package service;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import dao.Board;
import dao.BoardDao;

public class DeleteFormAction implements CommandProcess {

	@Override
	public String requestPro(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		
		System.out.println("DeleteFormAction start...");
		
		try {
			// 1. num , pageNum Get
			int num = Integer.parseInt(request.getParameter("num"));
			String pageNum = request.getParameter("pageNum");
			// 2. BoardDao bd Instance
			BoardDao bd = BoardDao.getInstance();
			// 3. Board board = bd.select(num);
			Board board = bd.select(num);
			// 4. request 객체에  num , pageNum ,board
			request.setAttribute("num", num);
			request.setAttribute("pageNum", pageNum);
			request.setAttribute("board", board);

		} catch (Exception e) {
			System.out.println(e.getMessage());
		}
		return  "deleteForm.jsp";
	}

}

 

 

webapp > deleteForm.jsp(jsp)

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
	<h2>삭제하려면 암호를 입력하세요</h2>
	<form action="deletePro.do">
		<input type="hidden"     name="pageNum" value="${pageNum }">
		<input type="hidden"     name="num"     value="${num }">
		암호 : <input type="text" name="passwd"><p>
		<input type="submit" value="확인">
	</form>
</body>
</html>

command.properties에 /deletePro.do=service.DeleteProAction 추가

 

src/main/java > service 패키지 > DeleteProAction.java(class)

package service;

import java.io.IOException;
import java.sql.SQLException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import dao.BoardDao;

public class DeleteProAction implements CommandProcess {

	@Override
	public String requestPro(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		
		System.out.println("DeleteProAction Start...");
		try {
			// 1. num , passwd , pageNum Get
			int num = Integer.parseInt(request.getParameter("num"));
			String passwd = request.getParameter("passwd");
			String pageNum = request.getParameter("pageNum");
			// 2. BoardDao bd Instance
			BoardDao bd = BoardDao.getInstance();
			// 3. 본인의 게시판 만 삭제 
			int result = bd.delete(num, passwd);
			// 4. request 객체에  num , pageNum ,result
			request.setAttribute("result", result);
			request.setAttribute("pageNum", pageNum);
			request.setAttribute("num", num);
		} catch (SQLException e) {
			System.out.println(e.getMessage());
		}
		
		return  "deletePro.jsp";
	}

}

webapp > deletePro.jsp(jsp)

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>    
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<c:if test="${result > 0 }">
	<script type="text/javascript">
		alert("삭제 완료 ! ");
		location.href="list.do?pageNum=${pageNum}";
	</script>
</c:if>	
<c:if test="${result == 0 }">
	<script type="text/javascript">
		alert("헐 ~ ㅠㅠ 암호 틀려");
		location.href="deleteForm.do?num=${num}&pageNum=${pageNum}";
	</script>
</c:if>	
</body>
</html>

BoardDao.java에 delete(int num, String passwd) 코드추가

 

실행 결과 : 글 삭제됨

 

command.properties에 /ajaxGetDeptName.do=service.AjaxGetDeptNameAction 추가

 

src/main/java > service 패키지 > AjaxGetDeptNameAction.java(class)

package service;

import java.io.IOException;
import java.sql.SQLException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import dao.Board;
import dao.BoardDao;

public class AjaxGetDeptNameAction implements CommandProcess {

	@Override
	public String requestPro(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		
		System.out.println("AjaxGetDeptNameAction Start...");
		request.setCharacterEncoding("utf-8");
		response.setContentType("text/html;charset=utf-8");
		try {
			// 본인 필요 DB Text 가져옴 (DAO 연결)
			int num = Integer.parseInt(request.getParameter("num"));
			BoardDao bd = BoardDao.getInstance();
			Board board = bd.select(num);
			request.setAttribute("writer", board.getWriter());
		} catch (SQLException e) {
			System.out.println(e.getMessage());
		}
		//ajax 경우 --> 더미 Return
		return "ajax";
	}

}

 

 

[최종 mvc 모델2 순서 정리]

1. view에서 .do 호출

-> web.xml 설정으로 컨트롤러 실행됨(컨트롤러는 코드 수정 없이 그대로 사용)

-> controller 설정으로 command.properties(file로 제작) 키에 해당하는 값인 service 확인

2. 해당 service 실행(class로 제작)

-> 여기에서 DTO, DAO 실행

3. 실행 다하면 return으로 view로 이동

 

즉 view에서 service로 가려면 .do를 씀. service에서는 return을 통해 view로 이동.

 

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