| | |
| | | package com.zy.common.utils; |
| | | |
| | | import javax.imageio.ImageIO; |
| | | import javax.servlet.http.HttpServletResponse; |
| | | import java.awt.*; |
| | | import java.awt.image.BufferedImage; |
| | | import java.util.Map; |
| | | import java.util.Random; |
| | | import java.util.concurrent.ConcurrentHashMap; |
| | | |
| | | public class RandomValidateCodeUtil { |
| | | |
| | | public static final Map<String, String> code = new ConcurrentHashMap<>(); |
| | | |
| | | private static String randString = "0123456789ABCDEFGHJKLMNPRSTUVWXYZ";//随机产生数字与字母组合的字符串 |
| | | private static int width = 60;// 图片宽 |
| | | private static int height = 27;// 图片高 |
| | | private static int lineSize = 40;// 干扰线数量 |
| | | private static int stringNum = 4;// 随机产生字符数量 |
| | | |
| | | private static Random random = new Random(); |
| | | |
| | | /** |
| | | * 获得字体 |
| | | */ |
| | | private static Font getFont() { |
| | | return new Font("Fixedsys", Font.CENTER_BASELINE, 18); |
| | | } |
| | | |
| | | /** |
| | | * 获得颜色 |
| | | */ |
| | | private static Color getRandColor(int fc, int bc) { |
| | | if (fc > 255) |
| | | fc = 255; |
| | | if (bc > 255) |
| | | bc = 255; |
| | | int r = fc + random.nextInt(bc - fc - 16); |
| | | int g = fc + random.nextInt(bc - fc - 14); |
| | | int b = fc + random.nextInt(bc - fc - 18); |
| | | return new Color(r, g, b); |
| | | } |
| | | |
| | | public static void init() { |
| | | BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_BGR); |
| | | Graphics g = image.getGraphics();// 产生Image对象的Graphics对象,改对象可以在图像上进行各种绘制操作 |
| | | g.fillRect(0, 0, width, height);//图片大小 |
| | | g.setFont(new Font("Times New Roman", Font.PLAIN, 18));//字体大小 |
| | | g.setColor(getRandColor(110, 133));//字体颜色 |
| | | // 绘制干扰线 |
| | | for (int i = 0; i <= lineSize; i++) { |
| | | drowLine(g); |
| | | } |
| | | // 绘制随机字符 |
| | | String randomString = ""; |
| | | for (int i = 1; i <= stringNum; i++) { |
| | | randomString = drowString(g, randomString, i); |
| | | } |
| | | g.dispose(); |
| | | } |
| | | |
| | | /** |
| | | * 生成随机图片 |
| | | */ |
| | | public static void getRandcode(String sd, HttpServletResponse response) { |
| | | BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_BGR); |
| | | Graphics g = image.getGraphics();// 产生Image对象的Graphics对象,改对象可以在图像上进行各种绘制操作 |
| | | g.fillRect(0, 0, width, height);//图片大小 |
| | | g.setFont(new Font("Times New Roman", Font.PLAIN, 18));//字体大小 |
| | | g.setColor(getRandColor(110, 133));//字体颜色 |
| | | // 绘制干扰线 |
| | | for (int i = 0; i <= lineSize; i++) { |
| | | drowLine(g); |
| | | } |
| | | // 绘制随机字符 |
| | | String randomString = ""; |
| | | for (int i = 1; i <= stringNum; i++) { |
| | | randomString = drowString(g, randomString, i); |
| | | } |
| | | code.put(sd, randomString); |
| | | g.dispose(); |
| | | try { |
| | | ImageIO.write(image, "JPEG", response.getOutputStream()); |
| | | } catch (Exception e) { |
| | | e.printStackTrace(); |
| | | } |
| | | } |
| | | |
| | | /** |
| | | * 绘制字符串 |
| | | */ |
| | | private static String drowString(Graphics g, String randomString, int i) { |
| | | g.setFont(getFont()); |
| | | g.setColor(new Color(random.nextInt(101), random.nextInt(111), random |
| | | .nextInt(121))); |
| | | String rand = String.valueOf(getRandomString(random.nextInt(randString |
| | | .length()))); |
| | | randomString += rand; |
| | | g.translate(random.nextInt(3), random.nextInt(3)); |
| | | g.drawString(rand, 13 * (i - 1) + 2, 16); |
| | | return randomString; |
| | | } |
| | | |
| | | /** |
| | | * 绘制干扰线 |
| | | */ |
| | | private static void drowLine(Graphics g) { |
| | | int x = random.nextInt(width); |
| | | int y = random.nextInt(height); |
| | | int xl = random.nextInt(13); |
| | | int yl = random.nextInt(15); |
| | | g.drawLine(x, y, x + xl, y + yl); |
| | | } |
| | | |
| | | /** |
| | | * 获取随机的字符 |
| | | */ |
| | | public static String getRandomString(int num) { |
| | | return String.valueOf(randString.charAt(num)); |
| | | } |
| | | |
| | | } |
| | | //package com.zy.common.utils; |
| | | // |
| | | //import javax.imageio.ImageIO; |
| | | //import javax.servlet.http.HttpServletResponse; |
| | | //import java.awt.*; |
| | | //import java.awt.image.BufferedImage; |
| | | //import java.util.Map; |
| | | //import java.util.Random; |
| | | //import java.util.concurrent.ConcurrentHashMap; |
| | | // |
| | | //public class RandomValidateCodeUtil { |
| | | // |
| | | // public static final Map<String, String> code = new ConcurrentHashMap<>(); |
| | | // |
| | | // private static String randString = "0123456789ABCDEFGHJKLMNPRSTUVWXYZ";//随机产生数字与字母组合的字符串 |
| | | // private static int width = 60;// 图片宽 |
| | | // private static int height = 27;// 图片高 |
| | | // private static int lineSize = 40;// 干扰线数量 |
| | | // private static int stringNum = 4;// 随机产生字符数量 |
| | | // |
| | | // private static Random random = new Random(); |
| | | // |
| | | // /** |
| | | // * 获得字体 |
| | | // */ |
| | | // private static Font getFont() { |
| | | // return new Font("Fixedsys", Font.CENTER_BASELINE, 18); |
| | | // } |
| | | // |
| | | // /** |
| | | // * 获得颜色 |
| | | // */ |
| | | // private static Color getRandColor(int fc, int bc) { |
| | | // if (fc > 255) |
| | | // fc = 255; |
| | | // if (bc > 255) |
| | | // bc = 255; |
| | | // int r = fc + random.nextInt(bc - fc - 16); |
| | | // int g = fc + random.nextInt(bc - fc - 14); |
| | | // int b = fc + random.nextInt(bc - fc - 18); |
| | | // return new Color(r, g, b); |
| | | // } |
| | | // |
| | | // public static void init() { |
| | | // BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_BGR); |
| | | // Graphics g = image.getGraphics();// 产生Image对象的Graphics对象,改对象可以在图像上进行各种绘制操作 |
| | | // g.fillRect(0, 0, width, height);//图片大小 |
| | | // g.setFont(new Font("Times New Roman", Font.PLAIN, 18));//字体大小 |
| | | // g.setColor(getRandColor(110, 133));//字体颜色 |
| | | // // 绘制干扰线 |
| | | // for (int i = 0; i <= lineSize; i++) { |
| | | // drowLine(g); |
| | | // } |
| | | // // 绘制随机字符 |
| | | // String randomString = ""; |
| | | // for (int i = 1; i <= stringNum; i++) { |
| | | // randomString = drowString(g, randomString, i); |
| | | // } |
| | | // g.dispose(); |
| | | // } |
| | | // |
| | | // /** |
| | | // * 生成随机图片 |
| | | // */ |
| | | // public static void getRandcode(String sd, HttpServletResponse response) { |
| | | // BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_BGR); |
| | | // Graphics g = image.getGraphics();// 产生Image对象的Graphics对象,改对象可以在图像上进行各种绘制操作 |
| | | // g.fillRect(0, 0, width, height);//图片大小 |
| | | // g.setFont(new Font("Times New Roman", Font.PLAIN, 18));//字体大小 |
| | | // g.setColor(getRandColor(110, 133));//字体颜色 |
| | | // // 绘制干扰线 |
| | | // for (int i = 0; i <= lineSize; i++) { |
| | | // drowLine(g); |
| | | // } |
| | | // // 绘制随机字符 |
| | | // String randomString = ""; |
| | | // for (int i = 1; i <= stringNum; i++) { |
| | | // randomString = drowString(g, randomString, i); |
| | | // } |
| | | // code.put(sd, randomString); |
| | | // g.dispose(); |
| | | // try { |
| | | // ImageIO.write(image, "JPEG", response.getOutputStream()); |
| | | // } catch (Exception e) { |
| | | // e.printStackTrace(); |
| | | // } |
| | | // } |
| | | // |
| | | // /** |
| | | // * 绘制字符串 |
| | | // */ |
| | | // private static String drowString(Graphics g, String randomString, int i) { |
| | | // g.setFont(getFont()); |
| | | // g.setColor(new Color(random.nextInt(101), random.nextInt(111), random |
| | | // .nextInt(121))); |
| | | // String rand = String.valueOf(getRandomString(random.nextInt(randString |
| | | // .length()))); |
| | | // randomString += rand; |
| | | // g.translate(random.nextInt(3), random.nextInt(3)); |
| | | // g.drawString(rand, 13 * (i - 1) + 2, 16); |
| | | // return randomString; |
| | | // } |
| | | // |
| | | // /** |
| | | // * 绘制干扰线 |
| | | // */ |
| | | // private static void drowLine(Graphics g) { |
| | | // int x = random.nextInt(width); |
| | | // int y = random.nextInt(height); |
| | | // int xl = random.nextInt(13); |
| | | // int yl = random.nextInt(15); |
| | | // g.drawLine(x, y, x + xl, y + yl); |
| | | // } |
| | | // |
| | | // /** |
| | | // * 获取随机的字符 |
| | | // */ |
| | | // public static String getRandomString(int num) { |
| | | // return String.valueOf(randString.charAt(num)); |
| | | // } |
| | | // |
| | | //} |