package?com.code;

import?java.awt.Color;
import?java.awt.Graphics;
import?java.awt.image.BufferedImage;
import?java.io.IOException;
import?java.util.Random;

import?javax.imageio.ImageIO;
import?javax.servlet.http.HttpServlet;
import?javax.servlet.http.HttpServletRequest;
import?javax.servlet.http.HttpServletResponse;

public?class?ImageServlet?extends?HttpServlet{
	public?void?doGet（HttpServletRequest?requestHttpServletResponse?response）?throws?IOException?{
		//圖像數(shù)據(jù)緩沖區(qū)
		BufferedImage?bi?=?new?BufferedImage（6822BufferedImage.TYPE_INT_RGB）;
		//繪制圖片
		Graphics?g?=?bi.getGraphics（）;
		//獲取顏色
		Color?c?=?new?Color（200150255）;
		g.setColor（c）;
		g.fillRect（0?0?68?22）;
		
		char[]?ch?=?“ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmn“.toCharArray（）;
		//獲取隨機(jī)字符
		Random?r?=?new?Random（）;
		int?len?=?ch.lengthindex;
		//用于保存字符
		StringBuffer?sb?=?new?StringBuffer（）;
		
		for（int?i?=?0;i<4;i++）?{
			index?=?r.nextInt（len）;
			g.setColor（new?Color（r.nextInt（88）r.nextInt（188）r.nextInt（255）））;
			g.drawString（ch[index]+““?（i*15）+3?18）;
			sb.append（ch[index]）;
		}
		request.getSession（）.setAttribute（“piccode“?sb.toString（））;
		//參數(shù)一：輸出對(duì)象
		//參數(shù)二：輸出格式類型
		//參數(shù)三：輸出位置
		ImageIO.write（bi?“JPG“?response.getOutputStream（））;
		
	}
}

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件????????841??2018-07-16?10:23??ServletCode\.classpath

?????文件????????911??2018-07-16?10:23??ServletCode\.project

?????文件????????567??2018-07-16?10:23??ServletCode\.settings\.jsdtscope

?????文件????????364??2018-07-16?10:23??ServletCode\.settings\org.eclipse.jdt.core.prefs

?????文件????????485??2018-07-16?10:23??ServletCode\.settings\org.eclipse.wst.common.component

?????文件????????345??2018-07-16?10:23??ServletCode\.settings\org.eclipse.wst.common.project.facet.core.xml

?????文件?????????49??2018-07-16?10:23??ServletCode\.settings\org.eclipse.wst.jsdt.ui.superType.container

?????文件??????????6??2018-07-16?10:23??ServletCode\.settings\org.eclipse.wst.jsdt.ui.superType.name

?????文件???????2370??2018-07-16?11:50??ServletCode\build\classes\com\code\ImageServlet.class

?????文件???????1596??2018-07-16?11:45??ServletCode\build\classes\com\code\LoginServlet.class

?????文件???????1355??2018-07-16?11:50??ServletCode\src\com\code\ImageServlet.java

?????文件????????910??2018-07-16?11:45??ServletCode\src\com\code\LoginServlet.java

?????文件????????961??2018-07-16?11:31??ServletCode\WebContent\IdentifyDemo.jsp

?????文件?????????39??2018-07-16?10:23??ServletCode\WebContent\meta-INF\MANIFEST.MF

?????文件???????1206??2018-07-16?11:45??ServletCode\WebContent\WEB-INF\web.xml

?????目錄??????????0??2018-07-16?11:55??ServletCode\build\classes\com\code

?????目錄??????????0??2018-07-16?11:55??ServletCode\build\classes\com

?????目錄??????????0??2018-07-16?11:55??ServletCode\src\com\code

?????目錄??????????0??2018-07-16?10:23??ServletCode\WebContent\WEB-INF\lib

?????目錄??????????0??2018-07-16?11:55??ServletCode\build\classes

?????目錄??????????0??2018-07-16?11:55??ServletCode\src\com

?????目錄??????????0??2018-07-16?11:55??ServletCode\WebContent\meta-INF

?????目錄??????????0??2018-07-16?11:55??ServletCode\WebContent\WEB-INF

?????目錄??????????0??2018-07-16?11:55??ServletCode\.settings

?????目錄??????????0??2018-07-16?11:55??ServletCode\build

?????目錄??????????0??2018-07-16?11:55??ServletCode\src

?????目錄??????????0??2018-07-16?11:55??ServletCode\WebContent

?????目錄??????????0??2018-07-16?11:55??ServletCode

-----------?---------??----------?-----??----

????????????????12005????????????????????28

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