[JSP][인프런] 25강. FrontController 패턴과 Command 패턴 // 뒤에 다시 듣기

카테고리 없음 2018. 4. 27. 20:27 |

[JSP][인프런] 25강. FrontController 패턴과 Command 패턴

25-1. url-pattern

25-2. FrontController 패턴

25-3. Command 패턴






frontControllerEx.jsp

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<%@ page language="java" contentType="text/html; charset=EUC-KR"
    pageEncoding="EUC-KR"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=EUC-KR">
<title>Insert title here</title>
</head>
<body>
 
    <a href="insert.do">insert</a>
    <hr />
    <a href="http://localhost:8181<%=request.getContextPath()%>/update.do">update</a>
    <hr />
    <a href="http://localhost:8181/jsp_25_2_ex1_frontex/select.do">select</a>
    <hr />
    <a href="<%=request.getContextPath()%>/delete.do">delete</a>
 
</body>
</html>
cs



FrontCon.java

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package com.javalec.ex;
 
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;
 
/**
 * Servlet implementation class FrontCon
 */
@WebServlet("*.do") // .do로 끝나면 FrontCon으로 온다
public class FrontCon extends HttpServlet {
    private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public FrontCon() {
        super();
        // TODO Auto-generated constructor stub
    }
 
    /**
     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub
        System.out.println("doGet");
        actionDo(request, response);
    }
 
    /**
     * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub
        System.out.println("doPost");
        actionDo(request, response);
    }
    
    private void actionDo(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub
        System.out.println("actionDo");
        
        String uri = request.getRequestURI();
        System.out.println("uri : " + uri);
        String conPath = request.getContextPath();
        System.out.println("conPath : " + conPath);
        String command = uri.substring(conPath.length());
        System.out.println("command : " + command);
 
        if(command.equals("/insert.do")){
            System.out.println("insert");
            System.out.println("----------------");
        }else if(command.equals("/update.do")){
            System.out.println("update");
            System.out.println("----------------");
        }else if(command.equals("/select.do")){
            System.out.println("select");
            System.out.println("----------------");
        }else if(command.equals("/delete.do")){
            System.out.println("delete");
            System.out.println("----------------");
        }
    }
 
}
 
cs




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