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기존카테고리/JSP

EL(Expression Language) 2


elObj.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 action="post_elObj.jsp" method="get">

아이디:<input type="text" name="id"/><br/>

비밀번호:<input type="password" name="pw" /><br/>

<input type="submit" value="로그인"/>

</form>

<%

application.setAttribute("appName", "appValue");

session.setAttribute("sessionName", "sessionValue");

pageContext.setAttribute("pageName", "pageValue");

request.setAttribute("reqName", "reqValue");

%>

</body>

</html>



--------------------------------------------------------------------------------------------------------------




post_elObj.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>

<%

String id1 = request.getParameter("id");

String pw = request.getParameter("pw");

%>


아이디:<%= id1 %> <br/>

비밀번호:<%= pw %> <br/>

<hr />


아이디 : ${param.id}<br/>

비밀번호 : ${param.pw}<br/>

아이디 : ${param["id"]}<br/>

비밀번호 : ${param["pw"]}<br/>


<hr />

applicationScope: ${applicationScope.appName}<br/>

sessionScope: ${sessionScope.sessionName}<br/>

pageScope: ${pageScope.pageName}<br/>

requestScope: ${requestScope.reqName}


<hr/>

- context 초기화 파라미터 <br/>

${initParam.cont_1}<br/>

${initParam.cont_2}<br/>

${initParam.cont_3}


</body>

</html>



-------------------------------------------------------------------------------


web.xml


<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">

  <display-name>jsp_Ex_3</display-name>

  <welcome-file-list>

    <welcome-file>index.html</welcome-file>

    <welcome-file>index.htm</welcome-file>

    <welcome-file>index.jsp</welcome-file>

    <welcome-file>default.html</welcome-file>

    <welcome-file>default.htm</welcome-file>

    <welcome-file>default.jsp</welcome-file>

  </welcome-file-list>

  <context-param>

    <param-name>cont_1</param-name>

    <param-value>강호동</param-value>

  </context-param>

  <context-param>

    <param-name>cont_2</param-name>

    <param-value>이경규</param-value>

  </context-param>

  <context-param>

    <param-name>cont_3</param-name>

    <param-value>유재석</param-value>

  </context-param>

</web-app>







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