5.2 request 객체
-사용자의 요청에 관련된 정보를 얻기 위해 사용하는 객체
-클라이언트에서 서버로 보내는 요청을 담고있는 객체
-요청범위를 가지며 javax.servlet.http.HttpServletRequest 클래스의 한 인스턴스
-요청 파라미터와 관련된 메소드들
-서블릿의 service 메소드의 아규먼트인 HttpServletRequest와 동일하게 사용됨
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***실습16 requestTest1_Form.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="requestTest1_Form.jsp" method="post"> <table> <tr border="1"> <td>이름</td> <td><input type="text" name="name"></td> </tr> <tr> <td>성별</td> <td> 남<input type="radio" name="gender" value="male"/> 여<input type="radio" name="gender" value="female"/> </td> </tr> <tr> <td>취미</td> <td> 독서<input type="checkbox" name="hobby" value="독서"> 게임<input type="checkbox" name="hobby" value="게임"> tv시청<input type="checkbox" name="hobby" value="tv시청"> 축구<input type="checkbox" name="hobby" value="축구"> 기타<input type="checkbox" name="hobby" value="기타"> </td> </tr> <tr> <td colspan="2"><input type="submit" value="전송"></td> <td></td> </tr> </table>
</form>
</body> </html>
requestTest1_Form.jsp <%@ page language="java" contentType="text/html; charset=EUC-KR" pageEncoding="EUC-KR"%> <% request.setCharacterEncoding("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>
<table> <tr border="1"> <td>이름</td> <td><%=request.getParameter("name") %></td> </tr> <tr> <td>성별</td> <td> <% if( request.getParameter("gender").equals("male") ){ %> 남자 <% }else{%> 여자 <% } %> </td> </tr> <tr> <td>취미</td> <td> <% String[] hobby=request.getParameterValues("hobby"); for(int i=0; i<hobby.length; i++){ %> <%=hobby[i]%> <% } %>
</td> </tr>
</table>
</body> </html>
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***실습17 HTTP 헤더 정보와 관련된 메소드들 requestTest2.jsp <%@page import="java.util.Enumeration"%> <%@ page language="java" contentType="text/html; charset=EUC-KR" pageEncoding="EUC-KR"%> <% request.setCharacterEncoding("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>
<table border="1"> <tr > <td>헤더이름</td> <td>헤더값</td> </tr>
<% Enumeration<String> e=request.getHeaderNames(); while(e.hasMoreElements()){ String headerName=(String)e.nextElement();
%> <tr> <td><%=headerName %></td> <td><%=request.getHeader(headerName) %></td> </tr> <% }%>
</table>
</body> </html>
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***실습18 "쿠키, URL/URI, 요청 방식과 관련된 메소드들" requestTest3.jsp
<%@ page language="java" contentType="text/html; charset=EUC-KR" pageEncoding="EUC-KR"%> <html> <head> <title>Request Test3</title> </head> <body> <h1>쿠키, URL/URI, 요청방식에 관련된 정보 예제</h1> <table border="1"> <tr> <td>쿠키정보</td> <% Cookie[] cookie=request.getCookies(); if(cookie==null){ %> <td>쿠기가 존재하지 않습니다</td> <% } else { for(int i=0; i<cookie.length;i++){ %> <td><%=cookie[i].getName()%>(<%=cookie[i].getValue()%>) </td> <% } } %> </tr> <tr> <td>서버 도메인명</td> <td><%=request.getServerName() %> </td> <tr> <td>서버 포트번호</td> <td><%=request.getServerPort() %> </td> <tr> <td>요청 URL</td> <td><%=request.getRequestURL() %> </td> <tr> <td>요청 URI</td> <td><%=request.getRequestURI() %> </td> <tr> <td>요청 쿼리</td> <td><%=request.getQueryString() %> </td> <tr> <td>클라이언트 호스트명</td> <td><%=request.getRemoteHost() %> </td> <tr> <td>클라이언트 IP 주소</td> <td><%=request.getRemoteAddr() %> </td> <tr> <td>프로토콜</td> <td><%=request.getProtocol() %> </td> <tr> <td>요청방식</td> <td><%=request.getMethod() %> </td> <tr> <td>컨텍스트 경로</td> <td><%=request.getContextPath() %> </td> </table> </body> </html>
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