JSP - 장바구니(물건추가, 로그아웃)Session
login.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>
<form name ="form1" action="setProduct.jsp" method="post">
<h1>로그인</h1>
<input type="text" name="name" >
<input type="submit" name="login" value = "로그인">
</body>
</html>
///////////////////////////////////////////////
setProduct.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">
<%
request.setCharacterEncoding("euc-kr");
%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=EUC-KR">
<title>Insert title here</title>
</head>
<body>
<% String name = request.getParameter("name");
//앞에서 입력한 name값을 받아서 뿌려준다.
%>
<%if(name == null){
out.println("<script>alert('로그인 하세요'); history.go(-1); </script>");
}
//name이 비었을 때 다음페이지로 넘어갈려고할때의 예외처리
%>
<%= name%>님이 로그인 한 상태 입니다.<br><br><br>
<form name="form2" action="add.jsp" method="post">
<select name="fruit3">
<option value="사과">사과</option>
<option value="배">배</option>
<option value="오렌지">오렌지</option>
<option value="키위">키위</option>
</select>
<input type="submit" name="add" value="추가버튼">
</form>
<br><br>
<a href="checkOut.jsp">계산<>
</body>
</html>
/////////////////////////////////////////////
add.jsp
<%@page import="java.util.ArrayList"%>
<%@ 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>add.jsp</title>
</head>
<body>
<%
request.setCharacterEncoding("EUC-KR");
String productname = request.getParameter("fruit3");
ArrayList list = (ArrayList)session.getAttribute("productlist");
if(list == null){
list = new ArrayList();
session.setAttribute("productlist", list);
}
list.add(productname);
%>
<%if(productname == null){
out.println("<script>alert('과일을 고르세요'); history.go(-1); </script>");
} %>
<script>
alert("<%=productname %>이(가) 추가되었습니다!!");
history.go(-1);
</script>
</body>
</html>
//////////////////////////////////
checkOut.jsp
<%@page import="java.util.ArrayList"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!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=UTF-8">
<title>checkOut.jsp</title>
</head>
<body>
<div align="center">
<h2>계산</h2>
선택한 상품 목록
<hr>
<%
ArrayList list = (ArrayList)session.getAttribute("productlist");
if(list == null){
out.println("선택한 상품이 없습니다.!!");
} else {
for(Object productname:list){
out.println(productname+"<br>");
}
}
session.invalidate();
%>
</div>
<form action="logout.jsp">
<input type="submit" value="로그아웃"/>
</form>
</body>
</html>
/////////////////////////////////////////////
로그아웃시 session을 죽여주는 클래스
logout.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">
<%session.invalidate();
response.sendRedirect("login.jsp");
%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=EUC-KR">
<title>Insert title here</title>
</head>
<body>
</body>
</html>