| | |
| | | package com.zy.asrs.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.asrs.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));
|
| | | }
|
| | |
|
| | | }
|