1、生成验证码工具类publicclass CheckCodeTool {private Integer width = 80;private Integer height = 38;public String getCheckCode(BaseForm baseForm) {/** 绘图*/// step1,创建一个内存映像对象(画板)BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);// step2,获得画笔Graphics g = image.getGraphics();// step3,给笔上色//Random r = new Random();SecureRandom r = new SecureRand...
最近在用ssm框架做一个管理系统，做到登录验证时，使用了下面的代码生成图片验证码，最终的效果如下图。Java类[AppleScript] 纯文本查看 复制代码?01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88...
今天在做热敏打印机打印二维码，并有文字描述，想到的简单的方法就是根据热敏打印机的纸张宽度和高度，生成对应的图片，如下： package com.orisdom.utils;import lombok.extern.slf4j.Slf4j;import javax.imageio.ImageIO;import java.awt.*;import java.awt.image.BufferedImage;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.IOException;/** * @author chenxiaokang * ...
转载自 LonlySnow的博客：后台java 实现验证码生成 1、controller方法@RequestMapping(value = "/verifycode/img", method = RequestMethod.GET) @ApiOperation("generate image verification code") public void generateImgVerificationCode(HttpServletRequest request, HttpServletResponse response) {try {// int width = 200;// int height = 69;int width = 129;int height = 40;BufferedImage verifyImg = new BufferedIm...
package com.yt.dfn.util;import java.awt.Color; import java.awt.Font; import java.awt.Graphics2D; import java.awt.RenderingHints; import java.awt.image.BufferedImage; import java.util.Random;import org.apache.commons.lang3.StringUtils;/*** 图片验证码类* * @author tyg* @date 2019年3月14日下午3:02:50*/ public class Captcha {private int width = 100;private int height = 30;private Random random = new R...