ServletºÍJsp Öص㲿·Ö
Servlet ÕûÌå¼ÓÔعý³ÌÈçÏÂ
1¡¢Web·þÎñÆ÷½ÓÊÜrequest¡£
2¡¢ÇëÇ󷢸øServletÒýÇ棬Èç¹ûÒѾ¼ÓÔØservlet£¬class ÔòÖ±½ÓÖ´ÐУ¬·ñÔò´ÓÓ²ÅÌÖвéÕÒclass ¼ÓÔؽøÀ´¡£
3¡¢Ö´ÐÐService·½·¨´¦ÀíÇëÇ󣬲¢·µ»Ø¸øweb·þÎñÆ÷¡£
4¡¢web·þÎñÆ÷·µ»Ø¸ø¿Í»§¶Ë¡£
ServletµÄ¼Ì³Ð¹ØϵΪ
Servlet ½Ó¿Ú
|
GenericServlet ³éÏóÀà
|
HttpServlet ʵÏÖÀà
|
ÆÕͨServlet ×ÓÀà
ServletÉúÃüÖÜÆÚ
1¡¢×°Ôؼ°ÊµÀý»¯Servlet
ÿ´Î·ÃÎÊʱºò»á¼ì²éÎļþÐÞ¸Äʱ¼äÀ´¾ö¶¨ÊÇ·ñÖØÐÂloader£¬¹ý³ÌΪӲÅÌ-¡·ÄÚ´æ¡£ÖÁÓÚÊÇÆô¶¯Ê±ºò×°ÔØ»¹ÊÇÔÚ·ÃÎÊʱºò×°ÔØÊÇÓÉÈÝÆ÷À´¶¨¡£
2¡¢³õʼ»¯ Ö´ÐÐinit·½·¨
´ø²ÎÊýµÄinit·½·¨ºÍÎÞ²ÎÊýµÄinit·½·¨·Ö2ÖÖ¡£
Èç¹ûServletConfig ²ÎÊý²»¿ÕµÄÇé¿öÏ£¬µ÷ÓÃsuper.init(config)£»À´³õʼ»¯¸¸ÀàµÄ³ÉÔ±±äÁ¿ServletConfig¡£
³õʼ»¯
public abstract class GenericServlet{
private ServletConfig _config;
public void init(ServletConfig conf){
_config=config;
}
public String getInitParameter(String s){
_config.getInitParameter(s);
}
}
3¡¢´¦Àí¿Í»§ÇëÇó Ö´ÐÐservice·½·¨
PrintWriter output = resp.getWriter();
4¡¢Ïú»Ù Ö´ÐÐdestroy·½·¨
JSPËÄÖÖÔªËØ
1¡¢½Å±¾ÔªËØ
a.±í´ïʽ
¸ñʽ£º<%= %>
ת»¯ÐγÉServlet: out.print(express);
b.½Å±¾Ð¡Ó¦ÓóÌÐò£º
&nb
Ïà¹ØÎĵµ£º
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
< ......
ͨ³££¬ÎÒÃÇÐèÒªÌṩһ¸öÎļþÏÂÔصÄʱºò£¬½öÐèÒªÒ»¸ö³¬Á´½Ó¾Í¿ÉÒÔ½â¾ö¡£
±ÈÈçexeÎļþ£¬Êó±ê×ó¼üµã»÷Á´½Ó¾Í»áÌáʾÄãÖ±½ÓÖ´Ðл¹ÊDZ£´æ£¬ÓÒ¼üÔò¿ÉÒÔÖ±½ÓÁí´æΪ¡£¡£¡£
µ«ÊÇÓÐÒ»²¿·ÖÎļþ£¬±ÈÈçtxtµÈ¿ÉÒÔÔÚä¯ÀÀÆ÷ÖÐÖ±½Ó´ò¿ªµÄÎļþ£¬ÄãÖ»ÄÜÓÃÊó±êÓÒ¼üµã»÷Á´½ÓÈ»ºóÁí´æΪµÄ·½Ê½È¥±£´æ¸ÃÎļþ£¬Èç¹ûÖ±½Óµã»÷×ó¼ü£¬¸Ã ......
¼òµ¥µÄÁ¬½ÓÊý¾Ý¿âµÄ²âÊÔ´úÂë
<%@¡¡page¡¡import="java.lang.*,¡¡java.io.*,¡¡java.sql.*,¡¡java.util.*"¡¡contentType="text/html;charset=gb2312"¡¡%>
¡¡¡¡<html>
¡¡¡¡<body>
¡¡¡¡<%¡¡Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver").newInstance();
¡¡¡¡¡¡String¡¡url="jdbc:m ......
CGI¾ÍÊÇweb·þÎñÆ÷¸¨Öú³ÌÐò£¬ºÍservletÊÇÒ»¸ö×÷Óá£
----jspÓÐʲô-----
------------------------------------------------------
jsp¿ÉÒÔ°üÀ¨Ê²Ã´£º
1¡¢jsp½Å±¾£¨³ÌÐòƬ¶Î£©£º
<% ... %>
2¡¢jsp±í´ïʽ£º
<%= ... %>
3¡¢jsp3ÖÖÖ¸Á
<%@ page attribute="xxx" %>
<%@ taglib attribut ......
×÷Õß: Dudu, ¡¡³ö´¦:ITר¼ÒÍøÂÛ̳,¡¡ÔðÈαà¼: ³Â×Óç÷,¡¡
2009-09-18 13:00
¡¡¡¡CLOB¿ÉÓÃÓÚ´æ·Å´óÎı¾Êý¾Ý,×î¶à¿É´æ´¢4GBÊý¾Ý,ÔÚÓ¦Óÿª·¢ÖбȽϳ£¼û.javaÌṩµÄsql.ClobÀàÓëÖ®¶ÔÓ¦.ËüÌṩÁ½¸ö·½·¨À´¶ÁÈ¡ClobµÄÊý¾Ý:
¡¡¡¡ÓÃORACLE9i¡¢oracle8¡¢Óкܳ¤µÄÒ»¶Îʱ¼ä£¬ÎÒ°ÑÓÃÓÚJSPÖÐÐèҪעÒâµÄÎÊÌâÔÚÕâÀïд³öÀ´£¬½ö¹©´ó¼Ò²Î¿¼Á ......