Java»ñµÃÖ¸¶¨ClassLoaderËù¼ÓÔØµÄÀàÁбí
Ò»Ö±ÏëʵÏÖÏñDriverManagerÄÇÑùµÄgetConnection·½·¨£¬Í¨¹ý´Ë·½·¨¾Í¿ÉÒÔ»ñµÃÁ¬½Ó£¬¶øÇÒ»¹²»ÓÃÖ¸¶¨Driver£¬µ«Ç°ÌáÊÇDriverÒѾͨ¹ýClass.forName()»ònew Driver()½øÐÐÁ˼ÓÔØ¡£½ñÌìÖÕÓÚµÃÒÔʵÏÖ¡£
package quiz;
import java.lang.reflect.Field;
public class ClassLoaderDriver {
/**
* @param args
* @throws NoSuchFieldException
* @throws SecurityException
* @throws IllegalAccessException
* @throws IllegalArgumentException
* @throws ClassNotFoundException
*/
public static void main(String[] args) throws SecurityException, NoSuchFieldException, IllegalArgumentException, IllegalAccessException, ClassNotFoundException {
Class.forName("com.mysql.jdbc.Driver");
Field field = ClassLoader.class.getDeclaredField("classes");
field.setAccessible(true);//ÉèÖøóÉÔ±±äÁ¿Îª¿É·ÃÎÊ
System.out.println(field.get(ClassLoader.getSystemClassLoader()));
}
}
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create PROCEDURE pagelist
@tablename nvarchar(50),
@fieldname nvarchar(50)='*',
@pagesize int output,--ÿҳÏÔʾ¼Ç¼ÌõÊý
@currentpage int output,--µÚ¼¸Ò³
@orderid nvarchar(50),--Ö÷¼üÅÅÐò
@sort int,--ÅÅÐò·½Ê½£¬1±íʾÉýÐò£¬0±íʾ½µÐòÅÅÁÐ
......
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¼ÙÉèÎÒÃÇÒªÉè¼ÆÒ»¸öGirlºÍÒ»¸öBoyÀ࣬ÆäÖÐGirlÓÐkiss·½·¨£¬¼´GirlÏëÒªKissÒ»¸öBoy¡£ÄÇô£¬ÎÒÃǵÄÎÊÌâÊÇ£¬GirlÈçºÎÄܹ»ÈÏÊ ......
package com.test;
import java.text.DateFormat;
import java.text.ParsePosition;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
public class TimeTest {
//ÓÃÀ´ ......
JavaÕýÔò±í´ïʽµÄÓ¦Óã¬ÕâÀïÖ÷ÒªÓõ½ÁËPatternÀà¡£
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package quiz;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* JavaÕýÔò±í´ïʽʾÀý
* */
public class RegularExpressionPattern {
public static void main(String[] args) {
//1.²ÉÓÃPattern.LITERALģʽ,
Patter ......