import?java.io.IOException;
import?javax.servlet.ServletException;
import?javax.servlet.annotation.WebServlet;
import?javax.servlet.http.HttpServlet;
import?javax.servlet.http.HttpServletRequest;
import?javax.servlet.http.HttpServletResponse;
import?java.util.*;
import?java.awt.image.*;
import?java.awt.*;
import?javax.imageio.*;
/**
?*?Servlet?implementation?class?CheckCodeServlet
?*/

@WebServlet（“/CheckCodeServlet“）
public?class?CheckCodeServlet?extends?HttpServlet?{
	???private?Random?random=new?Random（）;
	????protected?void?doPost（HttpServletRequest?request?HttpServletResponse?response）?throws?ServletException?IOException?{
	?????????//內存圖片對象（TYPE_INT_BGR?選擇圖片模式RGB模式）
	????????BufferedImage?image?=?new?BufferedImage（9030BufferedImage.TYPE_INT_BGR）;
	?????????//得到畫筆
	????????Graphics?graphics?=?image.getGraphics（）;
	????????//畫之前要設置顏色，設置畫筆顏色
	????????graphics.setColor（Color.yellow）;
	????????//填充矩形區域（指定要畫的區域設置區）
	????????graphics.fillRect（009030）;
	????????//為了防止黑客軟件通過掃描軟件識別驗證碼。要在驗證碼圖片上加干擾線
	????????//給兩個點連一條線graphics.drawLine（）;
	????????for?（int?i=0;i<5;i++）{
	????????????//顏色也要隨機（設置每條線隨機顏色）
	????????????graphics.setColor（getRandomColor（））;
	????????????int?x1=random.nextInt（90）;
	????????????int?y1=random.nextInt（30）;
	????????????int?x2=random.nextInt（90）;
	????????????int?y2=random.nextInt（30）;
	????????????graphics.drawLine（x1y1x2y2）;
	????????}
	??
	????????//拼接4個驗證碼，畫到圖片上
	????????char?[]?arrays={‘A‘‘B‘‘C‘‘D‘‘E‘‘+‘};
	????????StringBuilder?builder?=?new?StringBuilder（）;
	????????for（int?i=0;i<4;i++）{
	???????????????//設置字符的顏色
	??
	????????????????int?index=random.nextInt（arrays.length）;
	????????????????builder.append（arrays[index]）;
	??????????}
	??????????//創建session對象將生成的驗證碼字符串以名字為checkCode保存在session中

	request.getSession（）.setAttribute（“checkCode“builder.toString（））;
	??????????//將4個字符畫到圖片上graphics.drawString（strxy）;一個字符一個字符畫
	????????for?（int?i=0;i	????????{
	????????????graphics.setColor（getRandomColor（））;
	????????????char?item=builder.toString（）.charAt（i）;
	????????????graphics.drawString（item+““10+（i*20）15）;
	????????}
	??
	??
	????????//輸出內存圖片到輸出流
	????????ImageIO.write（image“png“response.getOutputStream（））;
	??
	?????}
	??
	?????private?Color?getRandomColor（）{
	????????int?r=random.nextInt（256）;
	?????????int?g=random.nextInt（256）;
	?????????int?b=random.nextInt（256）;
	????????return?new?Color（rgb）;
	??
	?????}
	????protected?void?doGet（HttpServletRequest?request?HttpServletResponse?response）?throws?ServletException?IOException?{
	????????doPost（request?response）;
	????}
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????1164??2018-07-08?18:43??bookshop\.classpath

?????文件???????1058??2018-07-08?18:43??bookshop\.project

?????文件????????564??2018-07-08?18:43??bookshop\.settings\.jsdtscope

?????文件????????364??2018-07-08?18:43??bookshop\.settings\org.eclipse.jdt.core.prefs

?????文件????????483??2018-07-08?18:43??bookshop\.settings\org.eclipse.wst.common.component

?????文件????????414??2018-07-08?18:43??bookshop\.settings\org.eclipse.wst.common.project.facet.core.xml

?????文件?????????49??2018-07-08?18:43??bookshop\.settings\org.eclipse.wst.jsdt.ui.superType.container

?????文件??????????6??2018-07-08?18:43??bookshop\.settings\org.eclipse.wst.jsdt.ui.superType.name

?????文件???????2859??2018-07-08?18:43??bookshop\src\CheckCodeServlet.java

?????文件???????2939??2018-07-08?18:43??bookshop\WebRoot\Add.jsp

?????文件???????1869??2018-07-08?18:43??bookshop\WebRoot\AddProc.jsp

?????文件???????3171??2018-07-08?18:43??bookshop\WebRoot\bookManagement.jsp

?????文件???????1467??2018-07-08?18:43??bookshop\WebRoot\Delete.jsp

?????文件???????4185??2018-07-08?18:43??bookshop\WebRoot\Edit.jsp

?????文件???????2031??2018-07-08?18:43??bookshop\WebRoot\EditProc.jsp

?????文件????????177??2018-07-08?18:43??bookshop\WebRoot\error.html

?????文件???????3016??2018-07-08?18:43??bookshop\WebRoot\index.jsp

?????文件???????5391??2018-07-08?18:43??bookshop\WebRoot\login.jsp

?????文件???????2154??2018-07-08?18:43??bookshop\WebRoot\loginProc.jsp

?????文件?????????39??2018-07-08?18:43??bookshop\WebRoot\meta-INF\MANIFEST.MF

?????文件???????2362??2018-07-08?18:43??bookshop\WebRoot\pubAdd.jsp

?????文件???????1553??2018-07-08?18:43??bookshop\WebRoot\pubAddProc.jsp

?????文件???????1473??2018-07-08?18:43??bookshop\WebRoot\pubDelete.jsp

?????文件???????2886??2018-07-08?18:43??bookshop\WebRoot\pubEdit.jsp

?????文件???????1676??2018-07-08?18:43??bookshop\WebRoot\pubEditProc.jsp

?????文件???????2741??2018-07-08?18:43??bookshop\WebRoot\pubManagement.jsp

?????文件???????1789??2018-07-08?18:43??bookshop\WebRoot\pubSearch.jsp

?????文件???????2591??2018-07-08?18:43??bookshop\WebRoot\pubSearchProc.jsp

?????文件???????3122??2018-07-08?18:43??bookshop\WebRoot\roleManagement.jsp

?????文件???????1778??2018-07-08?18:43??bookshop\WebRoot\Search.jsp

............此處省略26個文件信息