JSPÎÞË¢ÐÂÑéÖ¤Âë
´ËʵÏÖ¹²·ÖÈý¸öÎļþ£¬¼´£ºCreatImage.java Éú³ÉͼÏñÁ÷µÄÀ࣬ÌṩÓÃÓÚÉú³ÉͼƬÁ÷µÄ·½·¨£»images.jsp ͼƬ°ü×°£¬ÓÃÓÚ½«Í¼Æ¬¼ÓÈëµ½responseÊä³öÁ÷ÖУ»login.jsp µ÷ÓÃÇ°ÃæµÄjsp£¬ÏÔʾÑéÖ¤Âë¡£
CreatImage.java Àࣺ
3 import java.awt.Color;
4 import java.awt.Font;
5 import java.awt.Graphics;
6 import java.awt.Image;
7 import java.awt.image.BufferedImage;
8 import java.util.Random;
9
10 import javax.servlet.http.HttpServletRequest;
11 import javax.servlet.http.HttpServletResponse;
12 import javax.servlet.http.HttpSession;
13
14 public class CreatImage{
15
16 private static final long serialVersionUID = 1L;
17 Image image = null;
18 HttpServletRequest request = null;
19 HttpServletResponse response = null;
20
21 public CreatImage(HttpServletRequest request, HttpServletResponse response){
22 this.request = request;
23 this.response = response;
24 }
25
26 public Color getRandColor(int fc,int bc){//¸ø¶¨·¶Î§»ñµÃËæ»úÑÕÉ«
27 Random random = new Random();
28 if(fc>255) fc=255;
29 if(bc>255) bc=255;
30 int r=fc random.nextInt(bc-fc);
31 int g=fc random.nextInt(bc-fc);
32 int b=fc random.nextInt(bc-fc);
33 return new Color(r,g,b);
34 }
35
36 public BufferedImage creatImage(){
37
Ïà¹ØÎĵµ£º
µÚÒ»²½£ºÏÂÔØj2sdkºÍtomcat
µ½sun¹Ù·½Õ¾£¨http://java.sun.com/j2se/1.5.0/download.jsp£©ÏÂÔØj2sdk£¬×¢ÒâÏÂÔØ°æ±¾ÎªWindows Offline InstallationµÄSDK£¬Í¬Ê±×îºÃÏÂÔØJ2SE 1.5.0 Documentation£¬È»ºóµ½tomcat¹Ù·½Õ¾µã£¨http://jakarta.apache.org/site/downloads/downloads_tomcat-5.cgi£©ÏÂÔØtomcat£¨ÏÂÔØ×îÐÂ5.5.9°æ±¾µ ......
Èç¹ûÔÚ×Ô¶©±êÇ©¿âʱ£¬²¢²»ÐèÒª¶Ô±êÇ©±¾Ìå×÷´¦Àí£¬ÔòÄú¿ÉÒԼ̳ÐTagSupportÀà±ð£¬TagSupportÀà±ðʵ×÷ÁËTagÓë IterationTag½éÃæ£¬IterationTag½éÃæÔòÊÇTag½éÃæµÄ×Ó½éÃæ£¬TagSupportÀà±ðÌæÄúÔ¤ÏÈʵ×÷ÁËÕâÁ½¸ö½éÃæÖеķ½·¨£¬Ôڼ̳ÐTagSupportÖ®ºó£¬ÄúÊÓÐèÒªÀ´¸Äдµ±ÖеÄһЩ·½·¨£¨ÕâÊÇ Default Adapterģʽ£©¡£
Tag½éÃæÖÐÓë±êÇ© ......
´ÓJSPҳʹͼƬÒÔJPEG±àÂëºó´æ´¢ÔÚÖ¸¶¨Îļþ¼ÐÖС£ÕâÖÖJSPÉÏ´«Í¼Æ¬·½Ê½Óë×é¼þÉÏ´«Ïà±ÈËÆºõ±¿×¾¶øÓÖ²»ÄܶÔÎļþÊôÐÔ½øÐвÙ×÷£¬µ«µÄÈ·¿ÉÒÔÇáËÉʵÏÖJSPÉÏ´«Í¼Æ¬µÄ¹¦ÄÜ¡£
¡¡¡¡uploadimage1.jspʵÏÖ¹¹½¨Ò»¸ö±íµ¥£¬Ìá½»ÓÃÓÚΪ
<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
<%
Str ......
http://zhangjunhd.blog.51cto.com/113473/20629
1£®Servlet¹ýÂËÆ÷
1.1 ʲôÊǹýÂËÆ÷
¹ýÂËÆ÷ÊÇÒ»¸ö³ÌÐò£¬ËüÏÈÓÚÓëÖ®Ïà¹ØµÄservlet»òJSPÒ³ÃæÔËÐÐÔÚ·þÎñÆ÷ÉÏ¡£¹ýÂËÆ÷¿É¸½¼Óµ½Ò»¸ö»ò¶à¸öservlet»òJSPÒ³ÃæÉÏ£¬²¢ÇÒ¿ÉÒÔ¼ì²é½øÈëÕâЩ×ÊÔ´µÄÇëÇóÐÅÏ¢¡£ÔÚÕâÖ®ºó£¬¹ýÂËÆ÷¿ÉÒÔ×÷ÈçϵÄÑ¡Ôñ£º
¢ÙÒÔ³£¹æµÄ·½Ê½µ÷ÓÃ×ÊÔ´£¨¼´£¬µ÷ ......
1¡¢ÐèҪ׼±¸µÄÈí¼þ£¨Èí¼þû·¨ÉÏ´«Ö»ºÃ·¢µØÖ·£©
£¨1£©jdk1.6
£¨2£©TOMCAT 5.5»òTOMCAT 6.0
2¡¢ÏȰ²×°jdk1.6£¬Ä¬Èϰ²×°¼´¿É£¬°²×°Íêºó£¬µã“¿ªÊ¼” -- “ÔËÐД£¬ÊäÈëcmdÈ·¶¨£¬½øÈëÃüÁî¿ò£¬ÊäÈë“java -version”£¬»Ø³µ£¬¾Í»á³öÀ´javaµÄ ......