java web±ê¼Ç¼¼Êõ
1 jsp »ù´¡¸ÅÄî
jspÊÇÔÚ´«Í³µÄhtmlÒ³ÃæÖУ¬¼ÓÈëjavaµÄ³ÌÐòƬ¶ÎºÍjsp±ê¼Ç£¬¾Í¹¹³ÉÁËjspÒ³Ãæ¡£µ±web·þÎñÆ÷Óöµ½¶ÔjspµÄ·ÃÎÊÇëÇóʱ£¬ÏÈÖ´ÐÐ¶ÔÆäÖеÄjava³ÌÐòƬ¶Î£¬È»ºóÒÔhtmlµÄ¸ñʽ·µ»Ø¸øÓû§¡£ java³ÌÐòƬ¶Î¿ÉÒÔÓÃÀ´²Ù×÷Êý¾Ý¿â£¬Öض¨ÏòÍøÒ³£¬»òÕßÊÇ·¢ËÍE-mail ,ÑéÖ¤µÇ½ÐÅÏ¢£¬ ÕâЩ²Ù×÷¶¼ÊÇÔÚ·þÎñÆ÷¶ËÍê³É£¬Óû§½ö½öÊǵõ½ÔËÐкóµÄ½á¹û¡£
¿ÉÒÔÏëÏó£¬jspÆäʵ¾ÍÊÇServletµÄÁíÒ»ÖÖÐÎʽ£¬µ±jspÒýÇæ¶ÔJspÒ³Ãæ½øÐнâÎöºó»áÉú³ÉÒ»¸öÀàËÆServletµÄÎļþ£¬È»ºó½»ÓÉServletÒýÇæ±àÒëÖ´ÐС£
Ò²¾ÍÊÇ˵ jsp ºÍServletÔÚ±àÒëºóÔÚ·þÎñÆ÷ÖеÄÐÎʽÊÇÒ»Öµġ£
2 ±ê¼Ç¿â¼¼Êõ
²úÉúµÄÔÒò£º
£¨1£© java³ÌÐòÔ±ºÍÒ³ÃæÃÀ¹¤ÈËÔ±±ØÐëͬʱ¹¤×÷¡£ÕâÊǸöºÜ´óµÄȱµã¡£
web³ÌÐòÔ±ÔÚºǫ́Éè¼Æ¸÷ÖÖ±ê¼Ç£¬¶øÒ³ÃæÉè¼ÆÈËÔ±ÔòÖ±½ÓʹÓóÌÐòÔ±Éè¼ÆºÃµÄ±ê¼Ç½øÐд¦ÀíÒ³Ãæ¡£
£¨2£©Ê×Ïȱàд<hello:sayhello>µÄjavaʵÏÖ£¬ÈçÏ£º
package servletPackage;
import java.io.IOException;
import javax.servlet.jsp.tagext.*;
import javax.servlet.jsp.*;
public class HelloTag implements Tag {
//¶¨ÒåÒ³ÃæµÄÉÏÏÂÎÄ
private PageContext context = null ;
//ʵÏÖtag½Ó¿Ú
public void setPageContext(PageContext pageContext){
this.context = pageContext ;
}
//ʵÏÖTag½Ó¿Ú
public void setParent(Tag tag){
}
public Tag getParent(){
return null ;
}
//ʵÏÖTag ½Ó¿Ú£¬²¢Ö´ÐÐ±í¼¯Ìå
public int doStartTag(){
try {
context.getOut().print("Hello from Tag") ;
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return SKIP_BODY ;
}
public HelloTag() {
super();
}
public int doEndTag() throws JspException {
// TODO Auto-generated method stub
return SKIP_PAGE;
}
public void release() {
// TODO Auto-generated method stub
}
}
£¨3£© È»ºóÔÙWEB-INFÎļþ¼Ðϱàдһ¸öºó׺Ϊ.tldµÄxmlÎļþ£¬ÓÃÒÔÉùÃû×Ô¶¨ÒåµÄ±êÇ©¡£
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE taglib
PUBLIC "-//Sun Microsys
Ïà¹ØÎĵµ£º
instanceofÊÇJavaµÄÒ»¸ö¶þÔª²Ù×÷·û£¬ºÍ==£¬>£¬<ÊÇͬһÀà¶«¶«¡£ÓÉÓÚËüÊÇÓÉ×Öĸ×é³ÉµÄ£¬ËùÒÔÒ²ÊÇJavaµÄ±£Áô¹Ø¼ü×Ö¡£ËüµÄ×÷ÓÃÊDzâÊÔËü×ó±ßµÄ¶ÔÏóÊÇ·ñÊÇËüÓұߵÄÀàµÄʵÀý£¬·µ»ØbooleanÀàÐ͵ÄÊý¾Ý¡£¾Ù¸öÀý×Ó£º
¡¡¡¡String s = "I AM an Object!";
¡¡¡¡boolean isObject = s instanceof Object;
¡¡¡¡ÎÒÃÇÉùÃ÷ÁËÒ»¸öStrin ......
Java ±ê×¼Óë¹æ·¶
±¾À¸Ä¿ÌṩÁË´óÁ¿µÄ Java ¼¼Êõ±ê×¼Óë¹æ·¶µÄ¼ò½é¡¢¹Ù·½ÍøÖ·ÒÔ¼° developerWorks ÍøÕ¾ÉÏÏà¹ØµÄ¼¼Êõ×ÊÔ´¡£Í¨¹ý±¾À¸Ä¿£¬Äú²»µ«¿ÉÒÔÁ˽⵱ǰ Java ÉçÇøÖ÷ÒªµÄ¼¼Êõ±ê×¼ºÍ¹æ·¶£¬»¹¿ÉÒÔͨ¹ý²é¿´Ïà¹ØµÄ¼¼ÊõÎÄÕºͽ̳̽øÐиüÉîÈëµÄѧϰ£¬´Ó¶ø¸üºÃµØÎªÊµ¼ÊµÄ Java ÏîÄ¿½øÐм¼ÊõÑ¡ÐÍ¡£
A B C D E F ......
Ϊ¼õÉÙDOM¡¢SAXµÄ±àÂëÁ¿£¬³öÏÖÁËJDOM£»
Óŵ㣺¼«´ó¼õÉÙÁË´úÂëÁ¿¡£
ʹÓó¡ºÏ£ºÒªÊµÏֵŦÄܼòµ¥£¬Èç½âÎö¡¢´´½¨µÈ£¬µ«Ôڵײ㣬JDOM»¹ÊÇʹÓÃSAX£¨×î³£Óã©¡¢DOM¡¢XananÎĵµ¡£
±ØÐëµÃÏÂÔØjdom.jarÎļþ
package xml.jdom;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOExce ......
Òì³£
Òì³£´æÔÚµÄÄ¿µÄ
¿´Ò»ÏÂCÓïÑԵijö´í´¦Àí·½Ê½
int f() {
f1();
f2():
f3();
}//Èç¹ûÔÚÿ¸öº¯Êýºó¶¼Ôö¼Ó³ö´íµÄÅжÏ(Èç¹ûÊÇÕý³£Âß¼¿ÉÒÔ×ß²»Í¬µÄ·ÖÖ§)²¢ÊÍ·Å×ÊÔ´£¬ÄÇÕâ¸öº¯ÊýÄÚ»áÓÐÌ«¶àÓëÖ÷¸ÉÎÞ¹ØÓ°ÏìÇåÎúÔĶÁµÄ´úÂë´æÔÚ£¬¶øÇÒ¹ý¶àreturnÓÐʱ»áʹµÃ×ÊÔ´µ ......
2009ÄêµÄ12ÔÂ22ÈÕ£¬ÎÒ´Ó¹«Ë¾´ÇÖ°ÁË£¬ÒòΪûÓз¢Õ¹Ç°Í¾£¬2009Äê12ÔÂ24ÈÕ£¬ÎÒÀ´µ½ÁË´«ÖDz¥¿ÍÉÏJAVAµÄÔ¤ÈȰ࣬ÕâÆÚ°àÊǸöºÍÉа࣬ûÓÐÒ»¸öÅ®Éú£¬¸Ð¾õÆø·Õ»¹²»´í£¬Ã¿Ìì´ó¼Ò¶¼ÔÚÒ»Æðѧϰ£¬¸ú×ÅÀÏÐìÉϿΣ¬Ï¿ÎÊǸçÃÇ£¬Ò»Æð³é³éÑÌ£¬ÁÄÁÄJAVA£¬¾ÍÕâÑùÒ»¸ö°ëÔµÄÔ¤ÈȰà¾Í½áÊøÁË¡£
¸ÐлÐìÀÏʦµÄ½Ìµ¼£¬¸Ðл°àÀïµÄ¸÷λͬѧµÄ°ïÖú£¬¹þ¹þ ......