디렉터리 패턴
http://localhost:8181/jsp_21_1_ex1_memberex/Hello ---->/Hello 서블릿
디렉터리 형태로 서버의 해당 컴포넌트를 찾아서 실행하는 구조 입니다.
확장자 패턴
확장자 형태로 서버의 해당 컴포넌트를 찾아서 실행하는 구조
http://localhost:8181/jsp_21_1_ex1_memberex/hello.do --->*.do 서블릿
command클래스
클라이언트로부터
받은 요청들에 대해서, 서블릿이
작업을 직접 처리 하지 않고, 해당
클래스가 처리하도록 합니다.
출처: http://luckys.tistory.com/156 [Lucky's...]
frontControllerEx.jsp
<%@ 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>
FontCon.java
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") //*.do확장자 한곳으로 집중
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(); 프로젝트 + 이름
System.out.println("uri : " + uri);
String conPath = request.getContextPath(); 프로젝트
System.out.println("conPath : " + conPath);
String command = uri.substring(conPath.length()); uri - conpath를 뺀것
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("----------------");
}
}
}
</body>
</html>
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