java web¿ª·¢ÖУ¬ÈçºÎ²é¿´JSPºÍServlet°æ±¾
java web¿ª·¢ÖУ¬ÈçºÎ²é¿´JSPºÍServlet°æ±¾
2008-12-10 09:00
ÎÒÃÇÔÚjava web¿ª·¢µÄ¹ý³ÌÖУ¬ÓÐʱÔÚ×ÊÁÏÉÏ¿ÉÄÜ»áÌáµ½»·¾³ËùÒªÖ§³ÖµÄJSP£¬Servlet°æ±¾¡£Èç¹û°æ±¾µÍ¾Í¿ÉÄܳöÏÖ²âÊÔ´íÎó¡£
·½·¨£º´ò¿ªtomcatµÄcommon\lib Ŀ¼Ï£¬ÓÐÁ½¸öJARÎļþ£º jsp-api.jar servlet-api.jar ¡£Èç¹ûûÓУ¬ÄÇ¿ÉÄÜÊÇÄãûÓÐÌí¼Ó½øÀ´¡£½âѹÕâÁ½¸öÎļþ£¬ÓüÇʱ¾·Ö±ð´ò¿ªMETA-INFϵÄMAINMEFT.MFÎļþ¡£
ÎÒµÄServlet°æ±¾ÊÇ£ºManifest-Version: 1.0
Ant-Version: Apache Ant 1.6.5
Created-By: 1.4.2_12-b03 (Sun Microsystems Inc.)
Name: javax/servlet/
Specification-Title: Java API for Servlets
Specification-Version: 2.4
Specification-Vendor: Sun Microsystems, Inc.
Implementation-Title: javax.servlet
Implementation-Version: 2.4.public_draft
Implementation-Vendor: Apache Software Foundation
ÎÒµÄJSP°æ±¾ÊÇ£ºManifest-Version: 1.0
Ant-Version: Apache Ant 1.6.5
Created-By: 1.4.2_12-b03 (Sun Microsystems Inc.)
Name: javax/servlet/jsp/
Specification-Title: Java API for JavaServer Pages
Specification-Version: 2.0
Specification-Vendor: Sun Microsystems, Inc.
Implementation-Title: javax.servlet.jsp
Implementation-Version: 2.0.public_draft
Implementation-Vendor: Apache Software Foundation
Ïà¹ØÎĵµ£º
Ŀ¼
¡¡¡¡Ç°ÑÔ
¡¡¡¡Ò». Java ÎĵµºÍ javadoc
¡¡¡¡¶þ. Îĵµ×¢Ê͵ĸñʽ
¡¡¡¡¡¡¡¡1. Îĵµ×¢Ê͵ĸñʽ»¯
¡¡¡¡¡¡¡¡2. Îĵµ×¢Ê͵ÄÈý²¿·Ö
¡¡¡¡Èý. ʹÓà javadoc ±ê¼Ç
¡¡¡¡¡¡¡¡1. @see µÄʹÓÃ
¡¡¡¡¡¡¡¡2. ʹÓà @author¡¢@version ˵Ã÷Àà
¡¡¡¡¡¡¡¡3. ʹÓà @param¡¢@return ºÍ @exception ˵Ã÷·½·¨
¡¡¡ ......
Java Singleton
ģʽ(µ¥Éíģʽ,µ¥Ì¬Ä£Ê½)ÊÇÒ»ÖÖ´´½¨ÐÍÉè¼Æģʽ¡£ÓÃÀ´±£Ö¤ÔÚÔËÐеÄÓ¦ÓóÌÐòÖУ¬Ò»¸öClassÖ»ÊÇʵÀý»¯Ò»´Î£¬Ò²¾ÍÊÇÖ»ÓÐÒ»¸öÏàÓ¦µÄ¶ÔÏó´æÔÚ¡£ÔÚ
web ³ÌÐòÖÐÎÒÃÇ»áÓÃÒ»¸öºËÐĵķÖÅ书ÄܵÄServlet³ÌÐò£¬ÔÚÕâÀïÎÒÃǾͿÉÒÔÔËÓÃÕâÖÖÉè¼ÆģʽÁË¡£ ......
Compiling with the Java Compiler API
µ÷ÓÃJava±àÒëÆ÷API±àÒëJava
´ÓµÚÒ»Ì쿪ʼ,±ê×¼Javaƽ̨¾ÍȱÉÙÄܹ»±»µ÷ÓÃ,È¥²úÉúJava×Ö½ÚÂëµÄ±àÒëÆ÷½Ó¿Ú. ʹÓÃSunʵÏÖµÄƽ̨,Ò»¸öÓû§¿ÉÒÔͨ¹ý·Ç±ê×¼µÄ com.sun.tools.javac °üÖеÄMain class È¥±àÒëÄãµÄ´úÂë (Äã¿ÉÒÔÔÚlib×ÓĿ¼Ï嵀 tools.jar ÎļþÀïÕÒµ½Ëü). È»¶øÕâ¸ö° ......
package demo1;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.GridLayout;
import java.awt.LayoutManager;
import java.awt.event.ActionEvent;
import ......
required ÊÇÊÇ·ñΪ±ØÑ¡ÊôÐÔ
rtexprvalueµÄÈ«³ÆÊÇ Run-time Expression Value£¬ ËüÓÃÓÚ±íʾÊÇ·ñ¿ÉÒÔʹÓÃJSP±í´ïʽ.
µ±ÔÚ<attribute>±êÇ©ÀïÖ¸¶¨<rtexprvalue>true</rtexprvalue>ʱ£¬ ±íʾ¸Ã×Ô¶¨Òå±êÇ©µÄijÊôÐÔµÄÖµ¿ÉÒÔÖ±½ÓÖ¸¶¨»òÕßͨ¹ý¶¯Ì¬¼ÆËãÖ¸¶¨, example as follow:
<sql:query var="result" & ......