hidden 값전달

주소창입력:http://localhost:8090/p1/a.jsp?id=idval&pw=pwval&addr=addrval&tel=telval

a.jsp
======================
<%@ page language="java" contentType="text/html; charset=EUC-KR"
 pageEncoding="EUC-KR"%>
<%
 String id=request.getParameter("id");   //주소창에서 입력한 값들 저장
 String pw=request.getParameter("pw");
 String addr=request.getParameter("addr");
 String tel=request.getParameter("tel");
%>

<form action="b.jsp">
 <input type="hidden" name="a" value="<%=id%>"> //값전달을 위해 hidden사용
 <input type="hidden" name="b" value="<%=pw%>">
 <input type="hidden" name="c" value="<%=addr%>">
 <input type="hidden" name="d" value="<%=tel%>">
 <input type="submit" value="회원정보보기">
</form>

b.jsp
===================

 <%@ page language="java" contentType="text/html; charset=EUC-KR"
 pageEncoding="EUC-KR"%>

회원정보

ID : <%=request.getParameter("a")%><br>
PW : <%=request.getParameter("b")%><br>
ADDR : <%=request.getParameter("c")%><br>
TEL : <%=request.getParameter("d")%>