java³¬¼òµ¥,³¬¼¶ÊµÓÃÑéÖ¤Âë
1. ÑéÖ¤Âë(2)
dsnaValidateCode.jar
dsnaValidateCode_src.rar
ValidateCode.java ÑéÖ¤ÂëÉú³ÉÀà
Java´úÂë
package cn.dsna.util.images;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Random;
import javax.imageio.ImageIO;
/**
* ÑéÖ¤ÂëÉú³ÉÆ÷
* @author dsna
*
*/
public class ValidateCode {
// ͼƬµÄ¿í¶È¡£
private int width = 160;
// ͼƬµÄ¸ß¶È¡£
private int height = 40;
// ÑéÖ¤Âë×Ö·û¸öÊý
private int codeCount = 5;
// ÑéÖ¤Âë¸ÉÈÅÏßÊý
private int lineCount = 150;
// ÑéÖ¤Âë
private String code = null;
// ÑéÖ¤ÂëͼƬBuffer
private BufferedImage buffImg=null;
private char[] codeSequence = { 'A','B','C','D','E','F','G', 'H','I','J','K','L','M','N','P','Q','R','S','T','U','V','W','X','Y','Z','1','2','3','4','5','6','7','8','9'};
public ValidateCode() {
&n
Ïà¹ØÎĵµ£º
1. ¸ÅÊö
±¾ÎÄÖ÷Òª°üÀ¨ÒÔϼ¸¸ö·½Ã棺±àÂë»ù±¾ÖªÊ¶£¬java£¬ÏµÍ³Èí¼þ£¬url£¬¹¤¾ßÈí¼þµÈ¡£
ÔÚÏÂÃæµÄÃèÊöÖУ¬½«ÒÔ"ÖÐÎÄ"Á½¸ö×ÖΪÀý£¬¾²é±í¿ÉÒÔÖªµÀÆäGB2312±àÂëÊÇ"d6d0 cec4"£¬Unicode±àÂëΪ"4e2d 6587"£¬UTF±àÂë¾ÍÊÇ"e4b8ad e69687"¡£×¢Ò⣬ÕâÁ½¸ö×ÖûÓÐiso8859-1±àÂ룬µ«¿ÉÒÔÓÃiso8859-1±àÂëÀ´"±íʾ"¡£  ......
ºÜ¶àÅóÓÑÔÚÉîÈëµÄ½Ó´¥JavaÓïÑÔºó¾Í»á·¢ÏÖÕâÑùÁ½¸ö´Ê£º·´ÉäºÍÄÚÊ¡£¬Ö®Ç°ÎÒÃÇÒѾͨ¹ýʵÀý½âÎöÁËJavaµÄ·´Éä»úÖÆ£¬ÔÚʲô³¡ºÏÏÂÓ¦ÓÃÒÔ¼°ÈçºÎʹÓ㿽ñÌì°ÑÕâ¶þÕß·ÅÔÚÒ»Æð½éÉÜ£¬ÒòΪËüÃǶþÕßÊÇÏศÏà³ÉµÄ¡£
·´Éä
Ïà¶Ô¶øÑÔ£¬·´Éä±ÈÄÚÊ¡¸üÈÝÒ×Àí½âÒ»µã¡£ÓÃÒ»¾ä±È½Ï°×µÄ»°À´¸ÅÀ¨£¬·´Éä¾ÍÊÇÈÃÄã¿ÉÒÔͨ¹ýÃû³ÆÀ´µÃµ½¶ÔÏó(À࣬ÊôÐÔ£ ......
Ò»°ãÎÒÃÇÔÚjavaÖÐÔËÐÐÆäËüÀàÖеķ½·¨Ê±£¬ÎÞÂÛÊǾ²Ì¬µ÷Ó㬻¹ÊǶ¯Ì¬µ÷Ó㬶¼ÊÇÔÚµ±Ç°µÄ½ø³ÌÖÐÖ´Ðеģ¬Ò²¾ÍÊÇ˵£¬Ö»ÓÐÒ»¸öjavaÐéÄâ»úʵÀýÔÚÔËÐС£¶øÓеÄʱºò£¬ÎÒÃÇÐèҪͨ¹ýjava´úÂëÆô¶¯¶à¸öjava×Ó½ø³Ì¡£ÕâÑù×öËäȻռÓÃÁËһЩϵͳ×ÊÔ´£¬µ«»áʹ³ÌÐò¸ü¼ÓÎȶ¨£¬ÒòΪÐÂÆô¶¯µÄ³ÌÐòÊÇÔÚ²»Í¬µÄÐéÄâ»ú½ø³ÌÖÐÔËÐеģ¬Èç¹ûÓÐÒ»¸ö½ø³Ì·¢Éú ......
·´ÉäµÄ¸ÅÄîÊÇÓÉSmithÔÚ1982ÄêÊ×´ÎÌá³öµÄ£¬Ö÷ÒªÊÇÖ¸³ÌÐò¿ÉÒÔ·ÃÎÊ¡¢¼ì²âºÍÐÞ¸ÄËü±¾Éí״̬»òÐÐΪµÄÒ»ÖÖÄÜÁ¦¡£ÕâÒ»¸ÅÄîµÄÌá³öºÜ¿ìÒý·¢Á˼ÆËã»ú¿ÆÑ§ÁìÓò¹ØÓÚÓ¦Ó÷´ÉäÐÔµÄÑо¿¡£ËüÊ×Ïȱ»³ÌÐòÓïÑÔµÄÉè¼ÆÁìÓòËù²ÉÓÃ,²¢ÔÚLispºÍÃæÏò¶ÔÏó·½ÃæÈ¡µÃÁ˳ɼ¨¡£ÆäÖÐLEAD/LEAD++ ¡¢OpenC++ ¡¢MetaXaºÍOpenJavaµÈ¾ÍÊÇ»ùÓÚ·´Éä»úÖÆµÄÓïÑÔ¡£×î½ü ......
SQL×¢ÈëÊÇ×î³£¼ûµÄ¹¥»÷·½Ê½Ö®Ò»,Ëü²»ÊÇÀûÓòÙ×÷ϵͳ»òÆäËüϵͳµÄ©¶´À´ÊµÏÖ¹¥»÷µÄ,¶øÊdzÌÐòÔ±ÒòΪûÓÐ×öºÃÅжÏ,±»²»·¨
Óû§×êÁËSQLµÄ¿Õ×Ó,ÏÂÃæÎÒÃÇÏÈÀ´¿´ÏÂʲôÊÇSQL×¢Èë:
±ÈÈçÔÚÒ»¸öµÇ½½çÃæ,ÒªÇóÓû§ÊäÈëÓû§ÃûºÍÃÜÂë:
& ......