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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");
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Íâ²¿Ìø×ªÊÇÁ½´ÎÇëÇóºÍÁ½´ÎÏìÓ¦
ServletContext:ServletÉÏÏÂÎĶÔÏó
ËüÊÇÒ»¸ö¹«¹²ÇøÓò,¿ÉÒÔ±»ËùÓеĿͻ§¶Ë¹²Ïí
setAttribute():Ïò¹«¹²ÇøÓòÀï·ÅÈëÊý¾Ý
getAttribute():´Ó¹«¹²ÇøÓòÀïÈ¡
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page
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request
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session
ÔÚµ±Ç°»á»°ÖÐÓÐЧ
application
ÔÚËùÓÐÓ¦ÓóÌÐòÖÐÓÐЧ
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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 ......
ActionContext.getContext().getSession().put("login", "1");
<%
String flag=(String)session.getAttribute("login");
if(flag==null)
response.sendRedirect("login.jsp");
%> ......
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Ð޸ģºeclipse.ini Îļþ
-Duser.language=en
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-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 ......
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testoracle.jspÈçÏ£º
< %@ page contentType= "text/html;charset=gb2312 "% >
< %@ page import= "java.sql.* "% >
< html >
< ......