게시판 FrontController-command 방식

<BoardFrontController.java>

package kr.board.frontcontroller;

import java.io.IOException;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import kr.board.controller.BoardContentController;
import kr.board.controller.BoardDeleteController;
import kr.board.controller.BoardFormController;
import kr.board.controller.BoardInsertController;
import kr.board.controller.BoardListController;
import kr.board.controller.BoardUpdateController;
import kr.board.controller.BoardUpdateFormController;
import kr.board.controller.Controller;

@WebServlet("*.do")
public class BoardFrontController extends HttpServlet {
	protected void service(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		// 1. command구하기
		String reqUrl = request.getRequestURI();
		String ctx = request.getContextPath();
		String command = reqUrl.substring(ctx.length());

		// 2. command에 따른 분기 작업(if~else)
		Controller controller = null;
		String view = null;
		// HandlerMapping
		if (command.equals("/boardList.do")) {
			controller = new BoardListController();
			view = controller.execute(request, response);
		} else if (command.equals("/boardInsert.do")) {
			controller = new BoardInsertController();
			view = controller.execute(request, response);
		} else if (command.equals("/boardForm.do")) {
			controller = new BoardFormController();
			view = controller.execute(request, response);
		} else if (command.equals("/boardDelete.do")) {
			controller = new BoardDeleteController();
			view = controller.execute(request, response);
		} else if (command.equals("/boardUpdateForm.do")) {
			controller = new BoardUpdateFormController();
			view = controller.execute(request, response);
		} else if (command.equals("/boardUpdate.do")) {
			controller = new BoardUpdateController();
			view = controller.execute(request, response);
		} else if (command.equals("/boardContent.do")) {
			controller = new BoardContentController();
			view = controller.execute(request, response);
		}
		// 3. View의 경로를 보고 forward or redirect 결정
		if (view != null) {
			if (view.indexOf("redirect:/") != -1) {
				response.sendRedirect(view.split(":/")[1]); // redirect:/boardList.do
			} else {
				RequestDispatcher rd = request.getRequestDispatcher(view);
				rd.forward(request, response);
			}
		}
	}
}

<BoardListController.java>

package kr.board.controller;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import kr.board.dao.BoardDAO;
import kr.board.domain.Board;

public class BoardListController implements Controller{
	public String execute(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		
		// Model과 연동하기
		BoardDAO dao = new BoardDAO();
		List<Board> list = dao.getAllList();
		
		// 객체바인딩(*****)
		request.setAttribute("list", list);
		
		// boardList.jsp
		return "/WEB-INF/board/boardList.jsp";
		
	}

}

<BoardContentController.java>

package kr.board.controller;

import java.io.IOException;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import kr.board.dao.BoardDAO;
import kr.board.domain.Board;

public class BoardContentController implements Controller {
	public String execute(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// ?idx=10
		int idx = Integer.parseInt(request.getParameter("idx")); // "10" -> 10
		BoardDAO dao = new BoardDAO();
		Board vo = dao.boardContent(idx);
		
		
		request.setAttribute("vo", vo);
		return "/WEB-INF/board/boardContent.jsp";
	
	}

}

<BoardDeleteController.java>

package kr.board.controller;

import java.io.IOException;


import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import kr.board.dao.BoardDAO;

public class BoardDeleteController implements Controller {
	public String execute(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// ?idx=10
		int idx = Integer.parseInt(request.getParameter("idx"));
		
		BoardDAO dao = new BoardDAO();
		
		dao.boardDelete(idx);
		
		return "redirect:/boardList.do"; //redirect
		
	}

}

<BoardFormController.java>

package kr.board.controller;

import java.io.IOException;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;


public class BoardFormController implements Controller {
	public String execute(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		
		return "/WEB-INF/board/boardForm.jsp";
		
	}

}

<BoardInsertController.java>

package kr.board.controller;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import kr.board.dao.BoardDAO;
import kr.board.domain.Board;



public class BoardInsertController implements Controller {
	public String execute(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		
		request.setCharacterEncoding("UTF-8");
		// 파라메터수집(VO)
		String title = request.getParameter("title");
		String content = request.getParameter("content");
		String writer = request.getParameter("writer");
		
		Board vo = new Board();
		vo.setTitle(title);
		vo.setContent(content);
		vo.setWriter(writer);
		
		BoardDAO dao = new BoardDAO();
		dao.boardInsert(vo); //등록
		// 등록후에는 다시 리스트페이지로 ... boardList.do
		return "redirect:/boardList.do";
		
	}

}

<BoardUpdateController.java>

package kr.board.controller;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import kr.board.dao.BoardDAO;
import kr.board.domain.Board;

public class BoardUpdateController implements Controller{
	public String execute(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		
		request.setCharacterEncoding("UTF-8");
		
		String title = request.getParameter("title");
		String content = request.getParameter("content");
		int idx = Integer.parseInt(request.getParameter("idx"));
		
		Board vo = new Board();
		vo.setTitle(title);
		vo.setContent(content);
		vo.setIdx(idx);
		
		BoardDAO dao = new BoardDAO();
		dao.boardUpdate(vo); //등록
		
		return "redirect:/boardList.do";
		
	}

}

<BoardUpdateFormController.java>

package kr.board.controller;

import java.io.IOException;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import kr.board.dao.BoardDAO;
import kr.board.domain.Board;

public class BoardUpdateFormController implements Controller {
	public String execute(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		
		int idx = Integer.parseInt(request.getParameter("idx")); 
		
		BoardDAO dao = new BoardDAO();
		dao.boardContent(idx);
		
		Board vo = dao.boardContent(idx);
		request.setAttribute("vo", vo);
		
		return "/WEB-INF/board/boardUpdate.jsp"; //foward
	}

}

<Controller.java>

package kr.board.controller;

import java.io.IOException;

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

public interface Controller {
	public String execute(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException;
	
	
}

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