JSPÖÐfilter¹ýÂËÆ÷ÑéÖ¤Óû§µÇ¼
JSPÖÐfilter¹ýÂËÆ÷ÑéÖ¤Óû§µÇ¼
ÏÖÔÚJSPʹÓÃÔ½À´Ô½¹ã·ºÁË£¬ÓÈÆäÊǺܶàÕþ¸®µÄÍøÕ¾¶¼²ÉÓÃÁËJSP¼¼Êõ£¬Æä¹¦ÄÜÇ¿´óÇÒ°²È«¡£
³õѧÕߺܶàÓÐÕâô¸öÎÊÌ⣬¾ÍÊÇ£¬ÍøÕ¾µÄÒ»¸öȨÏÞÉèÖ㬱ÈÈçµÇ¼Óû§¿ÉÒԲ鿴ÄÄÐ©Ò³Ãæ£¬¶øÓοÍÓÖÓÐȨÏÞ¿ÉÒÔ¿´ÄÄЩÄÚÈÝÄØ£¿
JSPÊÇÇ¿´óµÄ£¬µ«Æä´úÂ뻹ÊÇÏà¶Ô·±ËöµÄ£¬ÆäʵÓÃÒ»¸ö¹ýÂËÆ÷(filter)¾Í¿ÉÒÔʵÏÖÕâ¸ö¹¦ÄÜÁË¡£
ÒÔÏÂΪUserFilteµÄ´úÂ룺
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import User;
import UserDAO;
import SessionUtils;
public class UserFilter implements Filter
{
String nofilter;
String nofilterFiles[];
String sendRedirect;
public void destroy()
{
}
public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException
{
HttpServletRequest request=(HttpServletRequest)req;
HttpServletResponse response=(HttpServletResponse)res;
&
Ïà¹ØÎĵµ£º
1¡¢ÈçºÎ»ìºÏʹÓÃJspºÍSSI #include?
ÔÚJSPÖпÉÒÔʹÓÃÈçÏ·½Ê½°üº¬´¿HTML£º
µ«ÊÇÈç¹ûdata.incÖаüº¬JSP CODE £¬ÎÒÃÇ¿ÉÒÔʹÓãº
2¡¢ÈçºÎÖ´ÐÐÒ»¸öḬ̈߳²È«µÄJSP?
Ö»ÐèÔö¼ÓÈçÏÂÖ¸Áî
3¡¢JSPÈçºÎ´¦ÀíHTML FORMÖеÄÊý¾Ý?
ͨ¹ýÄÚÖõÄrequest¶ÔÏó¼´¿É£¬ÈçÏ£º
String item = request.getParameter("item");
int howM ......
session¾ÍÊÇÒ»¸öÈ«¾Ö±äÁ¿£¬ÊÇä¯ÀÀÆ÷Ïß³ÌÔÚ·þÎñÆ÷¶ËµÄ´úÀí¡£web·þÎñ³ÌÐòÖ»Òª´ò¿ª£¬session¾Í»á´æÔÚ£¬µ±ÄãµÚÒ»´Î·ÃÎÊʱ£¬session»á×Ô¶¯ÎªÄã·ÖÅäÒ»¸ösession ID£¬ËùÒÔsessionΪн¨Á¢µÄ£¬ËùÒÔsession.isNew()Ϊtrue¡£µ±ÄãË¢ÐÂÒ³ÃæÊ±£¬Õâ¸ösession IDÒ»Ö±´æÔÚ(session.getId()²»±ä)£¬²»»áÏûʧ£¬ËùÒÔse ......
֪ʶ׼±¸£º
JDBC·ÃÎÊÊý¾Ý¿âµÄ»ù±¾²½Öè
£¨1£©¡¢½«Êý¾Ý¿âµÄJDBCÇý¶¯¼ÓÔØµ½¹¤³ÌÀà¿âÖС£
£¨2£©¡¢¼ÓÔØJDBCÇý¶¯£¬²¢½«Æä×¢²áµ½DriverManagerÖС£ÏÂÃæÊÇһЩÖ÷Á÷Êý¾Ý¿âµÄJDBCÇý¶¯¼ÓÔØ×¢²áÂ룺
¢Ù¡¢oracleÊý¾Ý¿â
Class.forName(“oracle.jdbc.driver.OracleDriver”).newInstance();
¢Ú¡¢Sql Server 7.0/2000Êý¾ ......
1.request¶ÔÏó
¿Í»§¶ËµÄÇëÇóÐÅÏ¢±»·â×°ÔÚrequest¶ÔÏóÖУ¬Í¨¹ýËü²ÅÄÜÁ˽⵽¿Í»§µÄÐèÇó£¬È»ºó×ö³öÏìÓ¦¡£ËüÊÇHttpServletRequestÀàµÄʵÀý¡£
ÐòºÅ ·½ ·¨ & ......