A02_Controller.java
package jspexp.a02_mvc.a01_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;
/**
* Servlet implementation class A02_Controller
*/
@WebServlet(name = "mvc02.do", urlPatterns = { "/mvc02.do" })
public class A02_Controller extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public A02_Controller() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#service(HttpServletRequest request, HttpServletResponse response)
*/
protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
// 1. 요청값 처리
// 1) post방식의 한글 요청값 처리를 위해 encoding 처리
request.setCharacterEncoding("utf-8");
String id = request.getParameter("id");
String pass = request.getParameter("pass");
System.out.println("# 요청값 #");
System.out.println("아이디:"+id);
System.out.println("패스워드:"+pass);
// 출력 확인
// 2. 모델 데이터 처리.
// request :session scope의 두번째 객체로 하단에 forward를 통해서 모델 데이터를
// 보낼 수 있다.. .setAttribute("key", "value")형태로 저장하면,
// view단(jsp)에서 ${key}가져올 수있다.
// http://localhost:7080/jspexp/mvc02.do?id=himan&pass=7777
String isValid = "";
if(id!=null&&pass!=null) {
if(id.equals("himan") && pass.equals("7777") ){
isValid = "인증성공";
}else {
isValid = "미인증";
}
}else {
isValid = "로그인하세요";
}
request.setAttribute("isValid", isValid); // jsp : ${isValid}
// 3. view 화면 호출
String page = "a01_begin\\a31_mvc02.jsp";
RequestDispatcher rd = request.getRequestDispatcher(page);
rd.forward(request, response);
}
}
a31_mvc02.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"
import="java.util.*"
import="jspexp.z01_vo.*"
import="jspexp.a03_database.*" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
<c:set var="path" value="${pageContext.request.contextPath}"/>
<fmt:requestEncoding value="UTF-8" />
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
<link rel="stylesheet"
href="${path}/a00_com/a00_com.css">
<style>
</style>
<script type="text/javascript"
src="${path}/a00_com/jquery-3.6.0.js"></script>
<script type="text/javascript">
<%--
# 주의 : MVC 패턴으로 만들었을 때는 실행을 반드시 controller에서 시작하여야 한다.
--%>
//
$(document).ready(function(){
alert("${isValid}");
});
</script>
</head>
<body>
<h3>MVC두번째..</h3>
<h4>${isValid}</h4>
<form>
<table>
<tr><th>아이디</th><td><input type="text" name="id"/></td></tr>
<tr><th>패스워드</th><td><input type="text" name="pass"/></td></tr>
<tr><td colspan="2"><input type="submit" value="로그인"/></td></tr>
</table>
</form>
</body>
</html>
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