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JSPÍøÕ¾µÇ¼¼ÇÒäÌø×ªÊµÏÖµÄÒ»ÖÖ·½·¨

 member.jsp   //sessionÏÞÖÆ·ÃÎÊÒ³
<%
String url = ""
if(session.getAttribute("username")==null)
{
         url = myRedirect.dealurl(request);//¼Ç¼µ±Ç°µØÖ·ºÍÇëÇó²ÎÊý£¬dealurl½«Êµ¼Êurl´¦ÀíÁ˱ÜÃâºÍÒªÇëÇóurlÓиÉÈÅ,ÒòΪ»áÓÐ& ×Ö·û
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JSP×Ô¶¨Òå±êǩʵÏÖ¹ý³Ì

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ʵÏÖtagµÄÀࣨ±êÇ©´¦ÀíÆ÷£©(tag handler)
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2£¬±ØÐëʵÏÖTag, SimpleTagºÍBodyTagÖ®Ò»
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jspÁ¬½ÓÊý¾Ý¿â

 <meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<%@ page contentType="text/html; charset=gb2312" language="java"
import="java.sql.*"%>
<%  
    /*********************
  &nb ......

JSP(JSTL)ÖÐʹÓó£Á¿·ÀÖ¹Ó²±àÂë

this.state="01";ͨ³£µÄ×ö·¨ÊÇдһ¸öÀࣨ½Ó¿Ú£©À´´æ·Å³£Á¿
public interface MyConstant
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public static final String STATE_01= "01";
}
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this.state=MyConstant.STATE_01;
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JSPÄÚÖöÔÏó

servlet--------------------------------------------JSP
HttpServletRequest                             request
HttpServletResponse     &nbs ......
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