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

ÎåÖÖJSPÒ³ÃæÌø×ª·½·¨Ïê½â(1)

1. RequestDispatcher.forward()
ÊÇÔÚ·þÎñÆ÷¶ËÆð×÷ÓÃ,µ±Ê¹ÓÃforward()ʱ,Servlet engine´«µÝHTTPÇëÇó´Óµ±Ç°µÄServlet or JSPµ½ÁíÍâÒ»¸öServlet,JSP »òÆÕͨHTMLÎļþ,Ò²¼´ÄãµÄformÌá½»ÖÁa.jsp,ÔÚa.jspÓõ½ÁËforward()ÖØ¶¨ÏòÖÁb.jsp,´ËʱformÌá½»µÄËùÓÐÐÅÏ¢ÔÚ b.jsp¶¼¿ÉÒÔ»ñµÃ,²ÎÊý×Ô¶¯´«µÝ. µ«forward()ÎÞ·¨Öض¨ÏòÖÁÓÐframeµÄjspÎļþ,¿ÉÒÔÖØ¶¨ÏòÖÁÓÐframeµÄhtmlÎļþ,ͬʱforward()ÎÞ·¨ÔÚºóÃæ´ø²ÎÊý´«µÝ,±ÈÈçservlet?name=frank,ÕâÑù²»ÐÐ,¿ÉÒÔ³ÌÐòÄÚͨ¹ýresponse.setAttribute("name",name)À´´«ÖÁÏÂÒ»¸öÒ³Ãæ¡£
ÖØ¶¨Ïòºóä¯ÀÀÆ÷µØÖ·À¸URL²»±ä¡£
Àý£ºÔÚservletÖнøÐÐÖØ¶¨Ïò
public void doPost(HttpServletRequest request,HttpServletResponse response)
throws ServletException,IOException
{
¡¡ response.setContentType("text/html; charset=gb2312");
¡¡ ServletContext sc = getServletContext();
¡¡ RequestDispatcher rd = null;
¡¡ rd = sc.getRequestDispatcher("/index.jsp"); //¶¨ÏòµÄÒ³Ãæ
¡¡ rd.forward(request, response);
}
ͨ³£ÔÚservletÖÐʹÓ㬲»ÔÚjspÖÐʹÓá£
2. response.sendRedirect()
ÊÇÔÚÓû§µÄä¯ÀÀÆ÷¶Ë¹¤×÷,sendRedirect()¿ÉÒÔ´ø²ÎÊý´«µÝ,±ÈÈçservlet?name=frank´«ÖÁϸöÒ³Ãæ,ͬʱËü¿ÉÒÔÖØ¶¨ÏòÖÁ²»Í¬µÄÖ÷»úÉÏ,sendRedirect()¿ÉÒÔÖØ¶¨ÏòÓÐframe.µÄjspÎļþ.
ÖØ¶¨ÏòºóÔÚä¯ÀÀÆ÷µØÖ·À¸ÉÏ»á³öÏÖÖØ¶¨ÏòÒ³ÃæµÄURL
Àý£ºÔÚservletÖÐÖØ¶¨Ïò
public void doPost(HttpServletRequest request,HttpServletResponse response)
throws ServletException,IOException
{
¡¡ response.setContentType("text/html; charset=gb2312");
¡¡ response.sendRedirect("/index.jsp");
}
ÓÉÓÚresponseÊÇjspÒ³ÃæÖеÄÒþº¬¶ÔÏ󣬹ÊÔÚjspÒ³ÃæÖпÉÒÔÓÃresponse.sendRedirect()Ö±½ÓʵÏÖÖØ¶¨Î»¡£
×¢Ò⣺
(1) ʹÓÃresponse.sendRedirectʱ£¬Ç°Ãæ²»ÄÜÓÐHTMLÊä³ö£»
Õâ²¢²»ÊǾø¶ÔµÄ£¬²»ÄÜÓÐHTMLÊä³öÆäʵÊÇÖ¸²»ÄÜÓÐHTML±»Ë͵½ÁËä¯ÀÀÆ÷¡£ÊÂʵÉÏÏÖÔÚµÄserver¶¼ÓÐcache»úÖÆ£¬Ò»°ãÔÚ8K£¨ÎÒÊÇ˵ JSP¡¡SERVER£©£¬Õâ¾ÍÒâζ×Å£¬³ý·ÇÄã¹Ø±ÕÁËcache£¬»òÕßÄãʹÓÃÁËout.flush()Ç¿ÖÆË¢Ð£¬ÄÇôÔÚʹÓÃsendRedirect֮ǰ£¬ÓÐÉÙÁ¿µÄHTMLÊä³öÒ²ÊÇÔÊÐíµÄ¡£
(2) response.sendRedirectÖ®ºó£¬Ó¦¸Ã½ô¸úÒ»¾äreturn¡£
ÎÒÃÇÒѾ­ÖªµÀresponse.sendRedirectÊÇͨ¹ýä¯ÀÀÆ÷À´×öתÏòµÄ£¬ËùÒÔÖ»ÓÐÔÚÒ³Ãæ´¦ÀíÍê³Éºó£¬²Å»áÓÐʵ¼ÊµÄ¶¯×÷¡£¼ÈÈ»ÄãÒѾ­Òª×öתÏòÁË£¬ÄÇôºóµÄÊä³ö»¹


Ïà¹ØÎĵµ£º

jsp×Ô¶¨Òå±êÇ©(tag)¿ª·¢

1 ±ê¼Ç´¦Àí³ÌÐòÀà
´¦ÀíÀà¼Ì³ÐTagSupportÀà²¢ÖØÔØdoStartTag()·½·¨,
       Ôڸ÷½·¨ÖÐʹÓÃout.print();Êä³öÐèÒªµÄÊý¾Ýµ½Ê¹Óñ¾±êÇ©µÄjspÒ³Ãæ
package cn.xxx;
public class DateTag extends TagSupport {
private static final long serialVersionUID = 1L;
public int doStartTag() thr ......

ÔÚJSPÖÐÓÃObject¶ÔÏóÀ´´«µÝÖµ

JavaScript´úÂ룺
          //°ìÊ´¦³éÈ¡±ÈÀý¸Ä±ä£¬¸üÐÂÆäËûÊý¾Ý
....function changeOfficeSampleScale(obj,flushOfficeRow){
 var row=obj.parentNode.parentNode;  //È¡µÃËùÔÚÐÐ
 var officeCode=row.id; //È¡µÃÐеÄId
 
 if(i ......

´«ÖDz¥¿Í——JSP£¨Ò»£©

Ò»£¬jsp³öÏֵĵÄÔ­Òò
     ¿´Á½¶Î´úÂëµÄ¶Ô±È
  1 servletʵÏÖ
public class Welcome extends HttpServlet {
  int num = 1;
  public void doGet(HttpServletRequest request,
               &nbs ......

JSPÉú³ÉExcel±¨±íÎĵµ

Excel±¨±íµÄ·½·¨£¬Ò»¸ö¹ýì¶¼òµ¥£¬Ò»¸öÖ»ÄÜÓÃì¶windowƽ̨(ÒòΪʹÓÃjdbc-odbc bridge)£¬ÇÒÎÞ·¨Ê¹Óõ½ExcelÄÚ²¿µÄ¸÷ÖÖ¹«Ê½»òÊÇ·½·¨£¬Òò´Ë£¬½ñÌì½éÉÜÒ»¸öapache³öµÄÔª¼þ½ÐPOI£¬Ëü¿ÉÒÔÔÚUNIX»òwindowƽ̨´¦Àíword»òExcelµµ°¸£¬¶ø²»ÐèÒªÒÀ¿¿windowµÄcom£¬²¢ÇÒ¿ÉÉ趨´¢´æ¸ñ¸ñʽ¡¢ÁÐÓ¡¸ñʽµÈµÈ£»½ñÌìÎÒÀ´½éÉÜÆäÖÐÓйØ×ÊÁ϶ÁÈ¡¡¢ÐÂÔ ......

ÈçºÎÈ¥³ýJSPÊä³öHTMLʱ²úÉúµÄ´óÁ¿¿Õ¸ñºÍ»»ÐÐ

ÔÚWEBÓ¦ÓÃÖÐ,Èç¹ûʹÓÃjsp×÷Ϊview²ãµÄÏÔʾģ°å,¶¼»á±»¿Õ¸ñ/¿Õ»»ÐÐÎÊÌâËùÀ§ÈÅ.
Õâ¸öÎÊÌâµ±ÄêÒ²À§ÈÅÁËÎұȽϳ¤µÄʱ¼ä.ÒòΪÔÚjspÄÚʹÓõÄEL±êÇ©ºÍÆäËû±êǩʱ,»á²úÉú´óÁ¿µÄ¿Õ¸ñºÍ»»Ðзû.ÀýÈç:
------- start ----------
<c:choose>
    <c:when test="${fn:length(mainPageList)>1&}&q ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ