JavaµÄ·´Éä»úÖÆ
JAVA·´Éä»úÖÆÊÇÔÚÔËÐÐ״̬ÖУ¬¶ÔÓÚÈÎÒâÒ»¸öÀ࣬¶¼Äܹ»ÖªµÀÕâ¸öÀàµÄËùÓÐÊôÐԺͷ½·¨£»¶ÔÓÚÈÎÒâÒ»¸ö¶ÔÏ󣬶¼Äܹ»µ÷ÓÃËüµÄÈÎÒâÒ»¸ö·½·¨£»ÕâÖÖ¶¯Ì¬»ñÈ¡µÄÐÅÏ¢ÒÔ¼°¶¯Ì¬µ÷ÓöÔÏóµÄ·½·¨µÄ¹¦ÄܳÆÎªjavaÓïÑԵķ´Éä»úÖÆ¡£
Java·´Éä»úÖÆÖ÷ÒªÌṩÁËÒÔϹ¦ÄÜ£º ÔÚÔËÐÐʱÅжÏÈÎÒâÒ»¸ö¶ÔÏóËùÊôµÄÀࣻÔÚÔËÐÐʱ¹¹ÔìÈÎÒâÒ»¸öÀàµÄ¶ÔÏó£»ÔÚÔËÐÐʱÅжÏÈÎÒâÒ»¸öÀàËù¾ßÓеijÉÔ±±äÁ¿ºÍ·½·¨£»ÔÚÔËÐÐʱµ÷ÓÃÈÎÒâÒ»¸ö¶ÔÏóµÄ·½·¨£»Éú³É¶¯Ì¬´úÀí¡£
Java ·´ÉäÏà¹ØµÄAPI¼ò½é£º
λÓÚjava¡£lang¡£reflect°üÖÐ
--ClassÀࣺ´ú±íÒ»¸öÀà
--FiledÀࣺ´ú±íÀàµÄ³ÉÔ±±äÁ¿
--MethodÀࣺ´ú±íÀàµÄ·½·¨
--ConstructorÀࣺ´ú±íÀàµÄ¹¹Ôì·½·¨
--ArrayÀࣺÌṩÁ˶¯Ì¬´´½¨Êý×飬ÒÔ¼°·ÃÎÊÊý×éµÄÔªËØµÄ¾²Ì¬·½·¨¡£
JavaÌṩÁËÒ»Ì×»úÖÆÀ´¶¯Ì¬Ö´Ðз½·¨ºÍ¹¹Ôì·½·¨£¬ÒÔ¼°Êý×é²Ù×÷µÈ£¬ÕâÌ×»úÖÆ¾Í½Ð——·´Éä¡£·´Éä»úÖÆÊÇÈç½ñºÜ¶àÁ÷Ðпò¼ÜµÄʵÏÖ»ù´¡£¬ÆäÖаüÀ¨Spring¡¢HibernateµÈ¡£
1. µÃµ½Ä³¸ö¶ÔÏóµÄÊôÐÔ
1 public Object getProperty(Object owner, String fieldName) throws Exception {
2 Class ownerClass = owner.getClass();
3
4 Field field = ownerClass.getField(fieldName);
5
6 Object property = field.get(owner);
7
8 return property;
9 }
Class ownerClass = owner.getClass()£ºµÃµ½¸Ã¶ÔÏóµÄClass¡£
Field field = ownerClass.getField(fieldName)£ºÍ¨¹ýClassµÃµ½ÀàÉùÃ÷µÄÊôÐÔ¡£
Object property = field.get(owner)£ºÍ¨¹ý¶ÔÏóµÃµ½¸ÃÊôÐÔµÄʵÀý£¬Èç¹ûÕâ¸öÊôÐÔÊǷǹ«Óеģ¬ÕâÀï»á±¨IllegalAccessException¡£
2. µÃµ½Ä³¸öÀàµÄ¾²Ì¬ÊôÐÔ
1 public Object getStaticProperty(String className, String fieldName)
2
Ïà¹ØÎĵµ£º
ÏÈÌù´úÂë°É
¸Ðл£ºhttp://xranming.blog.163.com/blog/static/24204952009914104148872/
http://www.diybl.com/course/3_program/java/javajs/20090303/157541.html
1¡¢java´úÂ룺
Ö÷Òª²ÉÓÃdomÀ´½øÐвÙ×÷
java¶Ôxml²Ù×÷ÓÐËÄÖÖ·½·¨£ºhttp://passmatlab.bokee.com/3455905.html
package test;
import java ......
¶ÔÓÚ10½øÖÆÊýת»»ÎªN£¨2-36£©½øÖÆÒ»°ã¶¼ÊÇÑ¡ÔñÈ¡Óà³ýµÄËã·¨½øÐÐת»» £¬ÏÂÃæ¸ø³öÁ½ÖÖ·½°¸
Ò»ÖÖÊǵݹ飬һÖÖÊǵü´ú¡£Í¨¹ýЧÂÊÆÀ¼ÛÁ½ÕßÐÔÄÜ
ÆäÖеü´úµÄ·½°¸Ö±½ÓÈ¡×ÔjavaÔ´´úÂë¡£
/*
*Class NotationConvert.java
*Create Date: 2009-11-12
*Author:a276202460
*/
package com.rich.notation;
public class Notat ......
package cn.ctgu.edu.ac;
import java.sql.*;
public class test {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
String url="jdbc:sqlserver://localhost:1433;Database=ÍøÉÏÊéµê¹ÜÀíϵͳ;integr ......
Ò».µã»÷ͼÊ飬չʾ¸ÃÊéµÄÏêϸÐÅÏ¢
µã»÷ͼÊé→booksÒ³Ãæ→ͨ¹ýurlÖØÐ´displayBook.jsp?isbn=¸ÃÊé±àºÅ →´«ÈëdisplayBooksÒ³Ãæ→
<c:set var="isbn" value="${param.isbn}"></c:set>
<c:forEach var="currentBook" items="${sessionScope.bookTitles}">
<c:if test="${ ......
JavaÊÂÎñAPI£¨JTA£»Java Transaction API£©ºÍËüµÄͬ°ûJavaÊÂÎñ·þÎñ(JTS£»Java TransactionService)£¬ÎªJ2EEƽ̨ÌṩÁË·Ö²¼Ê½ÊÂÎñ·þÎñ¡£Ò»¸ö·Ö²¼Ê½ÊÂÎñ£¨distributedtransaction£©°üÀ¨Ò»¸öÊÂÎñ¹ÜÀíÆ÷£¨transaction manager£©ºÍÒ»¸ö»ò¶à¸ö×ÊÔ´¹ÜÀíÆ÷(resource manager)¡£Ò»¸ö×ÊÔ´¹ÜÀíÆ÷£¨resource manager£©ÊÇÈÎÒâÀàÐ͵ ......