Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

jsp»ù´¡Ëٳɾ«»ª½²½â

ServletÈý¸öÒªËØ:
1.±ØÐë¼Ì³Ð×ÔHttpServlet
2.±ØÐëʵÏÖdoGet()»òÕßdoPost()
3.±ØÐëÔÚweb.xmlÖÐÅäÖÃServlet
<servlet>
<servlet-name> </servlet-name>
<servlet-class> </servlet-class>
</servlet>
<servlet-mapping>
<servlet-name> </servlet-name>
<url-pattern> </url-pattern>
</servelt-mapping>
HttpServeltRrequest:ÇëÇó¶ÔÏó
getParameter():»ñµÃ±íµ¥ÔªËصÄÖµ
getAttribute():»ñµÃrequest·¶Î§ÖеÄÊôÐÔÖµ
setAttribute():ÉèÖÃreqeust·¶Î§ÖеÄÊôÐÔÖµ
setCharacterEncoding():ÉèÖÃ×Ö·û±àÂë
HttpSerletResponse:ÏàÓ¦¶ÔÏó
sendRedirect():Íâ²¿Ìø×ª
getWriter():»ñµÃÊä³öÁ÷¶ÔÏó
setContentType("text/html; charset=utf-8"):ÉèÖÃÏàÓ¦ÄÚÈݸñʽºÍ±àÂë
ËÄÖֻỰ¸ú×Ù·½Ê½:
1.Session
HttpSession session = request.getSession();
session.setAttribute("name", "zhangsan");
session.setAttribute("pwd", "aaa");
String name = (String) session.getAttribute("name");
2.cookie:
//´´½¨Cookie
Cookie cookie = new Cookie("name", "zhangsan");
//ÉèÖÃCookieµÄ³¬Ê±Ê±¼ä
cookie.setMaxAge(24 * 60 * 60 *60);
//°ÑCookie·¢Ë͵½¿Í»§¶Ë
response.addCookie(cookie);
//µÃµ½¿Í»§¶Ë·¢Ë͵ÄCookie
Cookie [] cookies = request.getCookies();
for(int i=0; i <cookies.length; i++) {
  Cookie temp = cookies;
  String key = temp.getName();
  String value = temp.getValue();
}
3.Òþ²Ø±íµ¥Óò
<input type="hidden" name="name" value="zhangsan" />
request.getParameter("name");
4.UrlÖØÐ´
ÎʺŴ«²Î
LoginServlet?username=zhangsan&pwd=123
String name = request.getParameter("username");
String pwd =request.getPareameter("pwd");
ÄÚ²¿Ìø×ª:
LoginServlet
request.getRequestDispatcher("index.jsp").forward(request, resposne);
Íâ²¿Ìø×ª:
response.sendRedirect("index.jsp");
ÄÚ²¿Ìø×ªÊÇÒ»´ÎÇëÇóºÍÒ»´ÎÏìÓ¦
Íâ²¿Ìø×ªÊÇÁ½´ÎÇëÇóºÍÁ½´ÎÏìÓ¦
ServletContext:ServletÉÏÏÂÎĶÔÏó
ËüÊÇÒ»¸ö¹«¹²ÇøÓò,¿ÉÒÔ±»ËùÓеĿͻ§¶Ë¹²Ïí
setAttribute():Ïò¹«¹²ÇøÓòÀï·ÅÈëÊý¾Ý
getAttribute():´Ó¹«¹²ÇøÓòÀïÈ¡


Ïà¹ØÎĵµ£º

jspÖÐ×÷ÓÃÓòscope¸ÅÄî

¼¸ºõËùÓеÄWeb¿ª·¢ÓïÑÔ¶¼Ö§³ÖSession¹¦ÄÜ£¬ServletÒ²²»ÀýÍâ¡£ Servlet/JSPÖеÄSession¹¦ÄÜÊÇͨ¹ý×÷ÓÃÓò(scope)Õâ¸ö¸ÅÄîÀ´ÊµÏֵġ£
×÷ÓÃÓò·ÖΪËÄÖÖ£¬·Ö±ðΪ£º
page
ÔÚµ±Ç°Ò³ÃæÓÐЧ(½öÓÃÓÚJSPÖÐ)
request
ÔÚµ±Ç°ÇëÇóÖÐÓÐЧ
session
ÔÚµ±Ç°»á»°ÖÐÓÐЧ
application
ÔÚËùÓÐÓ¦ÓóÌÐòÖÐÓÐЧ
ÊDz»ÊÇ¿´²»Ì«Ã÷°×£¿pageÒòΪ½ ......

SSH ÏîÄ¿ÖУ¬action»ñÈ¡jspÒ³Ãæ´«¹ýÀ´µÄselectÖµ

ÏîÄ¿¿ò¼ÜS2SH,jspÒ³ÃæÈçÏ£¬selectÁбíÉèΪmultiple¡£ÎªÁËÄÜÔÚactionÀïÈ¡µ½Ç°Ì¨½çÃæselectÁбíµÄ¶àѡֵ£¬Ï¹¸ãÁËÁ½Ì죬½ñÌìÖÕÓڳɹ¦¡£Æäʵºǫ́actionȡǰ̨jspÒ³ÃæµÄÖµºÜ¼òµ¥£¬·Ï»°²»¶à˵£¬ÏÈÌù´úÂ룺
<body>
<form action="sendMsg.action?senderId=${users.id }&username=${users.username}" m ......

jspÀ¹½ØÆ÷

ActionContext.getContext().getSession().put("login", "1");
<%
    String flag=(String)session.getAttribute("login");
    if(flag==null)
     response.sendRedirect("login.jsp");
     %> ......

xml£¬jsp,dtd,xsd ÌáʾÐÅÏ¢

½øÈëMyEclipse6.XÏÂ
Ð޸ģºeclipse.ini Îļþ
-Duser.language=en
¸Ä³É
-Duser.language=zh
µ¯³öÌáʾ£ºCtrl+"/"
dtd ÃüÃû¿Õ¼äµÄÌáʾÐÅÏ¢
window-->Preference-->xml-->XML Catalog-->add
Location :sql-map-2.dtd
key type :pubic ID
key:-//ibatis.apache.org//DTD SQL Map 2.0//EN (XMLÎļþÃüÃû¿Õ¼ ......

JSP²éѯÊý¾Ý¿â²¢ÏÔʾ½á¹ûµÄ³ÌÐò

Ò»¡¢jspÁ¬½ÓOracle8/8i/9iÊý¾Ý¿â£¨ÓÃthinģʽ£©  
testoracle.jspÈçÏ£º  
<   %@   page   contentType= "text/html;charset=gb2312 "%   >  
<   %@   page   import= "java.sql.* "%   >  
<   html   >  
< ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ