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    <p>Turn your jsp into a servlet!</p> <p>A jsp is a good choice to create markup files, which don't break if you add unnecessary whitespace inside your file.</p> <p>Your captcha code works without any change inside a servlet's doGet(...) method.</p> <pre><code>package test.captcha; import java.awt.Color; import java.awt.Font; import java.awt.Graphics2D; import java.awt.image.BufferedImage; import java.io.IOException; import java.io.OutputStream; import java.util.Random; import javax.imageio.ImageIO; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; public class CaptchaServlet extends HttpServlet { protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("image/jpg"); /* * Define number characters contains the captcha image, declare global */ int iTotalChars = 6; /* * Size image iHeight and iWidth, declare globl */ int iHeight = 40; int iWidth = 150; /* * font style */ Font fntStyle1 = new Font("Arial", Font.BOLD, 30); Font fntStyle2 = new Font("Verdana", Font.BOLD, 20); /* * Possible random characters in the image */ Random randChars = new Random(); String sImageCode = (Long.toString(Math.abs(randChars.nextLong()), 36)).substring(0, iTotalChars); /* * BufferedImage is used to create a create new image */ /* * TYPE_INT_RGB - does not support transpatency, TYPE_INT_ARGB - support transpatency */ BufferedImage biImage = new BufferedImage(iWidth, iHeight, BufferedImage.TYPE_INT_RGB); Graphics2D g2dImage = (Graphics2D) biImage.getGraphics(); // Draw background rectangle and noisey filled round rectangles int iCircle = 15; //g2dImage.fillRect(0, 0, iWidth, iHeight); for (int i = 0; i &lt; iCircle; i++) { g2dImage.setColor(new Color(randChars.nextInt(255), randChars.nextInt(255), randChars.nextInt(255))); int iRadius = (int) (Math.random() * iHeight / 2.0); int iX = (int) (Math.random() * iWidth - iRadius); int iY = (int) (Math.random() * iHeight - iRadius); //g2dImage.fillRoundRect(iX, iY, iRadius * 2, iRadius * 2,100,100); } g2dImage.setFont(fntStyle1); for (int i = 0; i &lt; iTotalChars; i++) { g2dImage.setColor(new Color(randChars.nextInt(255), randChars.nextInt(255), randChars.nextInt(255))); if (i % 2 == 0) { g2dImage.drawString(sImageCode.substring(i, i + 1), 25 * i, 24); } else { g2dImage.drawString(sImageCode.substring(i, i + 1), 25 * i, 35); } } /* * create jpeg image and display on the screen */ OutputStream osImage = response.getOutputStream(); ImageIO.write(biImage, "jpeg", osImage); //osImage.close(); /* * Dispose function is used destory an image object */ g2dImage.dispose(); HttpSession session = request.getSession(); session.setAttribute("dns_security_code", sImageCode); //System.out.println("Captcha Page :"+session.getAttribute("dns_security_code")); } protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { processRequest(request, response); } } </code></pre> <p>create if not exist a web application descriptor: /WEB-INF/web.xml</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"&gt; &lt;servlet&gt; &lt;servlet-name&gt;CaptchaServlet&lt;/servlet-name&gt; &lt;servlet-class&gt;test.captcha.CaptchaServlet&lt;/servlet-class&gt; &lt;/servlet&gt; &lt;servlet-mapping&gt; &lt;servlet-name&gt;CaptchaServlet&lt;/servlet-name&gt; &lt;url-pattern&gt;/captcha-image.jpg&lt;/url-pattern&gt; &lt;/servlet-mapping&gt; &lt;/web-app&gt; </code></pre>
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    1. POunable to load captcha.jsp in my img tag for my registration form
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    1. USJoerg Ruethschilling
    1. USJoerg Ruethschilling
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    1. POunable to load captcha.jsp in my img tag for my registration form
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    1. VO
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    1. COThis is working fine. And my above code is also working fine when i upload it to server. It was showing error in my localhost server.
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      1. USAshutosh Singh
    2. CODepending on how your web servlet container is configured you will get some unintended blanks in your JSP, as long as you are generating some kind of markup (html,xml, ...) this is no problem. but for generating binary content JSPs are not a perfect choice, because a single unintended blank inside of a binary file can render it useless.
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      1. USJoerg Ruethschilling
    3. COthanks! one new knowledge gained from you
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      1. USAshutosh Singh
 

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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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