sos gd

Public classVerifycodecontroller {Private intwidth = -;//define the width of the picture Private intHeight = -;//defines the height of a picture Private intCodecount =4;//define the number of verification codes displayed on the image

Original address: http://my.oschina.net/u/1757031/blog/488322ImportJava.awt.Color;ImportJava.awt.Font;ImportJava.awt.Graphics;ImportJava.awt.image.BufferedImage;Importjava.io.IOException;ImportJava.util.Random;ImportJavax.imageio.ImageIO;ImportJavax.

This article simply wrote a Java verification code, for the previously written SPRINGMVC registration function plus Verification code, the role of verification code is not much to say, to prevent the bot malicious registration and so on.Where

Packageweb;ImportJava.awt.Color;ImportJava.awt.Font;ImportJava.awt.Graphics2D;ImportJava.awt.image.BufferedImage;Importjava.io.IOException;ImportJava.util.Random;ImportJavax.imageio.ImageIO;Importjavax.servlet.ServletException;ImportJavax.servlet.Ser

First, the prefaceThe advantage of using a captcha in a form page is to effectively prevent users from submitting the form maliciously, or to use a plug-in to attack the system illegally. Ii. Conditions of preparation1, a common Web project