jsp ×éºÏÌõ¼þ¼±¼±£¡£¡£¡
sql_1="select * from sykj_main_df " if (request.getParameter("qq")!=null && request.getParameter("fh")!=null){ sql_1="select * from sykj_main_df where djrq>='"+qq+"' and djrq <='"+zq+"' order by djrq desc "; } qq ºÍfh ΪÁ½¸öÎı¾Óò qq fh Îı¾Óò ÖÐʲô¶¼Ã»Ê䣬һÌá½»²éѯ¾ÍÖ´ÐдËÌõÄêϵÄÓï¾äΪʲôѽ¡£(request.getParameter("qq")!=null && request.getParameter("fh")!=null)ÕâÌõ¼þ²»ÊÇÕâÑùдµÄÂð£¿
Èç¹ûrequest.getParameter("qq") == "" ÄØ request.getParameter("qq") Îı¾ÓòÒ²²»ÊÇÕâô»ñȡֵµÄ°¡ Ó¦¸ÃÊÇdocument.getElementById("qq"); Õâ¸öqqÊÇÄãÎı¾ÓòµÄID request.getParameter("qq") ÊÇ»ñÈ¡requestÇëÇóµÄÖµ ËùÒÔÄãдµÄÌõ¼þ²»¶Ô£¬Ó¦¸Ã ²»¹ÜÄãµÄÎı¾ÓòÊÇ·ñΪ¿Õ ¶¼ÒªÖ´ÐÐsqlÓï¾äÁË¡£ Â¥Ö÷¸Õѧϰjava°É ¼ÓÓÍÁË£¡ÒýÓà Èç¹ûrequest.getParameter("qq") == "" ÄØ document.getElementById("qq")ÕâÊÇÊÇдÔÚjsÀïµÄ°É¡£ÎÒÏëÔÚ <% %> ÀïÅÐ¶Ï±íµ¥ÊÇ·ñΪ¿ÕÀ´ÊµÏÖ×éºÏÌõ¼þ¿ÉÒÔÂ𣿻¹ÓÐÆäËü·½·¨Â𣿠ÒýÓà request.getParameter("qq") Îı¾ÓòÒ²²»ÊÇÕâô»ñȡֵµÄ°¡ Ó¦¸ÃÊÇdocument.getElementById("qq"); Õâ¸öqqÊÇÄãÎı¾ÓòµÄID request.getParameter("qq") ÊÇ»ñÈ¡requestÇëÇóµÄÖµ ËùÒÔÄãдµÄÌõ¼þ²»¶
Ïà¹ØÎÊ´ð£º
ÎÒÊÇÓÃSTRUTS £¬×öÁËÒ»¸öJSPÒ³Ãæ£¬Ìá½»ºóûÓдæÈëÊý¾Ý¿â¡£ JSP´úÂëÈçÏ£º aa.jsp´úÂë <%@ page contentType="text/html;charset=gb2312" language="java"%> <%@ taglib uri=" ......
package tom.jiafei; public class Student { String name=null; long number; double weight,height; public String getName() { return name; } public void setName(Strin ......
type Exception report message description The server encountered an internal error () that prevented it from fulfilling this request. exception org.apache.jas ......
//Óÿͻ§µÄsessionµÄid½¨Á¢Ò»¸öÁÙʱÎļþ£º //String tempFileName=(String)session.getId(); String tempFileName = (String)session.getId(); //out.println(& ......
ÎÒÏëµÇ¼ºó£¬Èç¹ûµÇ¼³É¹¦¾ÍÈ¥Ö´ÐÐij¸öÒ³Ãæ ÎÒÏÖÔڵĴúÂëÊÇÕâÑùµÄ£º if(rs.next()){ session.setAttribute( "username" , user); <jsp:include page="login.jsp" />// ......