jsp Servlet ´¦Àí±íµ¥Êý¾Ý
4.1 ±íµ¥Êý¾Ý¸ÅÊö
¡¡¡¡ Èç¹ûÄãÔø¾Ê¹ÓùýWebËÑË÷ÒýÇæ£¬»òÕßä¯ÀÀ¹ýÔÚÏßÊéµê¡¢¹ÉƱ¼Û¸ñ¡¢»úƱÐÅÏ¢£¬»òÐí»áÁôÒ⵽һЩ¹Å¹ÖµÄURL£¬±ÈÈç“http://host/path?user=Marty+Hall&origin=bwi&dest=lax”¡£Õâ¸öURLÖÐλÓÚÎʺźóÃæµÄ²¿·Ö£¬¼´“user=Marty+Hall&origin=bwi&dest=lax”£¬¾ÍÊÇ±íµ¥Êý¾Ý£¬ÕâÊǽ«WebÒ³ÃæÊý¾Ý·¢Ë͸ø·þÎñÆ÷³ÌÐòµÄ×î³£Ó÷½·¨¡£¶ÔÓÚGETÇëÇó£¬±íµ¥Êý¾Ý¸½¼Óµ½URLµÄÎʺźóÃæ£¨ÈçÉÏÀýËùʾ£©£»¶ÔÓÚPOSTÇëÇó£¬±íµ¥Êý¾ÝÓÃÒ»¸öµ¥¶ÀµÄÐз¢Ë͸ø·þÎñÆ÷¡£
¡¡¡¡ ÒÔǰ£¬´ÓÕâÖÖÐÎʽµÄÊý¾ÝÌáÈ¡³öËùÐèÒªµÄ±íµ¥±äÁ¿ÊÇCGI±à³ÌÖÐ×îÂé·³µÄÊÂÇéÖ®Ò»¡£Ê×ÏÈ£¬GETÇëÇóºÍPOSTÇëÇóµÄÊý¾ÝÌáÈ¡·½·¨²»Í¬£º¶ÔÓÚGETÇëÇó£¬Í¨³£ÒªÍ¨¹ýQUERY_STRING»·¾³±äÁ¿ÌáÈ¡Êý¾Ý£»¶ÔÓÚPOSTÇëÇó£¬ÔòÒ»°ãͨ¹ý±ê×¼ÊäÈëÌáÈ¡Êý¾Ý¡£µÚ¶þ£¬³ÌÐòÔ±±ØÐ븺ÔðÔÚ“&”·ûºÅ´¦½Ø¶Ï±äÁ¿Ãû×Ö-±äÁ¿Öµ¶Ô£¬ÔÙ·ÖÀë³ö±äÁ¿Ãû×Ö£¨µÈºÅ×ó±ß£©ºÍ±äÁ¿Öµ£¨µÈºÅÓұߣ©¡£µÚÈý£¬±ØÐë¶Ô±äÁ¿Öµ½øÐÐURL·´±àÂë²Ù×÷¡£ÒòΪ·¢ËÍÊý¾ÝµÄʱºò£¬×ÖĸºÍÊý×ÖÒÔÔÀ´µÄÐÎʽ·¢ËÍ£¬µ«¿Õ¸ñ±»×ª»»³É¼ÓºÅ£¬ÆäËû×Ö·û±»×ª»»³É“%XX”ÐÎʽ£¬ÆäÖÐXXÊÇÊ®Áù½øÖƱíʾµÄ×Ö·ûASCII£¨»òÕßISO Latin-1£©±àÂëÖµ¡£ÀýÈ磬Èç¹ûHTML±íµ¥ÖÐÃûΪ“users”µÄÓòֵΪ“~hall, ~gates, and ~mcnealy”£¬Ôòʵ¼ÊÏò·þÎñÆ÷·¢Ë͵ÄÊý¾ÝΪ“users=%7Ehall%2C+%7Egates%2C+and+%7Emcnealy”¡£×îºó£¬¼´µÚËĸöµ¼Ö½âÎö±íµ¥Êý¾Ý·Ç³£À§ÄѵÄÔÒòÔÚÓÚ£¬±äÁ¿Öµ¼È¿ÉÄܱ»Ê¡ÂÔ£¨Èç“param1=val1£¦param2=£¦param3=val3”£©£¬Ò²ÓпÉÄÜÒ»¸ö±äÁ¿ÓµÓÐÒ»¸öÒÔÉϵÄÖµ£¬¼´Í¬Ò»¸ö±äÁ¿¿ÉÄܳöÏÖÒ»´ÎÒÔÉÏ£¨Èç“param1=val1£¦param2=val2£¦param1=val3”£©¡£
¡¡¡¡ Java ServletµÄºÃ´¦Ö®Ò»¾ÍÔÚÓÚËùÓÐÉÏÊö½âÎö²Ù×÷¶¼Äܹ»×Ô¶¯Íê³É¡£Ö»ÐèÒª¼òµ¥µØµ÷ÓÃÒ»ÏÂHttpServletRequestµÄgetParameter·½·¨¡¢ÔÚµ÷ÓòÎÊýÖÐÌṩ±íµ¥±äÁ¿µÄÃû×Ö£¨´óСдÃô¸Ð£©¼´¿É£¬¶øÇÒGETÇëÇóºÍPOSTÇëÇóµÄ´¦Àí·½·¨ÍêÈ«Ïàͬ¡£
¡¡¡¡ getParameter·½·¨µÄ·µ»ØÖµÊÇÒ»¸ö×Ö·û´®£¬ËüÊDzÎÊýÖÐÖ¸¶¨µÄ±äÁ¿Ãû×ÖµÚÒ»´Î³öÏÖËù¶ÔÓ¦µÄÖµ¾·´±àÂëµÃµ½µÃ×Ö·û´®£¨¿ÉÒÔÖ±½ÓʹÓã©¡£Èç¹ûÖ¸¶¨µÄ±íµ¥±äÁ¿´æÔÚ£¬µ«Ã»ÓÐÖµ£¬getParameter·µ»Ø¿Õ×Ö·û´®£»Èç¹ûÖ¸¶¨µÄ±íµ¥±äÁ¿²»´æÔÚ£¬Ôò·µ»Ønull¡£Èç¹û±íµ¥±äÁ¿¿ÉÄܶÔÓ¦¶à¸öÖµ£¬¿ÉÒÔÓÃgetParameterValuesÀ´È¡´úgetParameter¡£getParameterValuesÄܹ»·µ»ØÒ»¸ö×Ö·û´®Êý×é¡£
¡¡¡¡ ×îºó£¬ËäÈ»ÔÚʵ
Ïà¹ØÎĵµ£º
ÉÏÍø¿´Á˺ö࣬¾ÍÕâһƪ½â¾öÁËÎÒµÄÎÊÌ⣬ÏÖת£¬ÎÒµÄÏîÄ¿ÓõÄÊÇMVC¼Ü¹¹£¬ÓÐͳһµÄ¿ØÖÆÆ÷£¬×ªÏò²»Í¬µÄAction£¬ÉÏÍø¿´Á˺ö࣬´ó²¿·ÖÊÇ˵¼ÓÈërequest.setCharacterEncoding("utf-8");µ«ÊǾ¹ýÎÒµÄÊÔÑ飬ÕâÖ»ÓÐÔÚÀûÓÃJSP´¦Àí±íµ¥´«ÊäÊý¾Ýʱ²Å¿ÉÓã¬ÔÚÎҵĶ«Î÷ÖÐÎÞ·¨½â¾ö£¬ºóÀ´·¢ÏÖ»¹ÊÇÓÃFilterChainºÃ£¬ºÇºÇ£¬Öص㻹ÊÇÔÚrequest ......
̸JSPÓëXMLµÄ½»»¥
ʹÓÃJavaServer PagesÓÐÈýÖÖ²»Í¬µÄ·½·¨ÓÃÓÚ´¦ÀíXMLÎĵµ£¬Ã¿ÖÖ·½·¨¶¼ÓÐÀûÓÚÌá¸ß·ÖÀëÒ³Ãæ´úÂëÓëXMLÊý¾ÝµÄˮƽ£¬ÓÐÀûÓÚ¼ò»¯¿ª·¢ÍøÒ³µÄ¸´ÔӶȲ¢ÇÒ¸ÄÉÆÌá¸ß×é¼þÓëÒ³Ãæ´úÂëµÄ¿ÉÖØÓÃÐÔ¡£
¡¡¡¡JavaServer Pages ( JSP)ºÍXMLÊÇSunµÄJ2EEµÄÁ½¸öÖÁ¹Ø½ôÒªµÄ×é¼þ¡£ JSPÊÇÓÃÓÚ´´½¨Ó¦ÓóÌÐò·þÎñÆ÷¶Ë³ÌÐòµÄÓÐЧ¹¤¾ß£¬¶ø¿ ......
µÚÒ»ÖÖ²ÉÓÃÔ¤±àÒëÓï¾ä¼¯£¬ËüÄÚÖÃÁË´¦ÀíSQL×¢ÈëµÄÄÜÁ¦£¬Ö»ÒªÊ¹ÓÃËüµÄsetString·½·¨´«Öµ¼´¿É£º
String sql= "select * from users where username=? and password=?;
PreparedStatement preState = conn.prepareStatement(sql);
preState.setString(1, userName);
preState.setString(2, password);
ResultSet rs = ......
ÔÚjspÖÐÒýÓÃresponse.setContentType("application/msword");£¬´ò¿ªµÄÒ³Ãæ¾ÍÊÇwordÑùʽ¡£
1¡¢ÊµÏÖwordºá´ò£º
<style>
@page
{mso-page-border-surround-header:no;
mso-page-border-surround-footer:no;}
@page Section1
{size:841.9pt 595.3pt;//Ö½ÕŵĴóС
mso-page-orientation:l ......
jsºÃÏñ±¾Éí²»ÄÜ»ñÈ¡·þÎñÆ÷µÄIP,µ«JSP¿ÉÒÔ£¬ËùÒÔÓøöÒþ²ØÓò£¬js¾Í¿ÉÒԽ輦ϵ°ÁË¡£
jsp´úÂëÈçÏ£º
<input type="hidden" id="serviceIp" name="serviceIp" value="<%=InetAddress.getLocalHost().getHostAddress()%>">
js´úÂëÈçÏ£º
function getServiceIP(){
var ser ......