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+package com.caimei.www.utils;
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+
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+import org.apache.commons.codec.binary.Base64;
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+
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+import javax.imageio.ImageIO;
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+import java.awt.*;
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+import java.awt.geom.AffineTransform;
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+import java.awt.image.BufferedImage;
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+import java.io.*;
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+import java.util.Arrays;
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+import java.util.Random;
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+
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+/**
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+ * <p>Description: Copyright © 2014-2015 CAIMEI365.com All Rights Reserved</p>
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+ *
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+ * @author xun.zhang
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+ * @date 2016年5月25日 上午10:18:35
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+ */
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+
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+public class VerifyCodeUtils {
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+
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+ // 使用到Algerian字体,系统里没有的话需要安装字体,字体只显示大写,去掉了1,0,i,o几个容易混淆的字符
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+ public static final String VERIFY_CODES = "23456789ABCDEFGHJKLMNPQRSTUVWXYZ";
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+ private static Random random = new Random();
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+
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+ /**
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+ * <p>Description: </p>
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+ * <p>Company: caimei365</p>
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+ *
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+ * @param w 验证码图片宽度
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+ * @param h 验证码图片高度
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+ * @param verifySize 验证码图片里面字符串位数
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+ * @return
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+ * @throws IOException
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+ * @author xun.zhang
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+ * @date 2016年5月25日 上午11:39:46
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+ */
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+ public static VerifyCode createVerifyCode(int w, int h, int verifySize) throws IOException {
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+ String code = generateVerifyCode(verifySize);
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+ ByteArrayOutputStream outPutStream = new ByteArrayOutputStream();
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+ outputImage(w, h, outPutStream, code);
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+
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+ InputStream in = new ByteArrayInputStream(outPutStream.toByteArray());
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+ byte[] data = null;
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+ // 读取图片字节数组
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+ try {
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+ data = new byte[in.available()];
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+ in.read(data);
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+ in.close();
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+ } catch (IOException e) {
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+ e.printStackTrace();
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+ }
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+ // 对字节数组Base64编码
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+ String base64 = Base64.encodeBase64String(data);
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+
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+ VerifyCode verifyCode = new VerifyCode(code, "data:image/jpg;base64," + base64);
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+
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+ return verifyCode;
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+ }
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+
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+ /**
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+ * 使用系统默认字符源生成验证码
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+ *
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+ * @param verifySize 验证码长度
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+ * @return
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+ */
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+ public static String generateVerifyCode(int verifySize) {
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+ return generateVerifyCode(verifySize, VERIFY_CODES);
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+ }
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+
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+ /**
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+ * 使用指定源生成验证码
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+ *
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+ * @param verifySize 验证码长度
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+ * @param sources 验证码字符源
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+ * @return
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+ */
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+ public static String generateVerifyCode(int verifySize, String sources) {
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+ if (sources == null || sources.length() == 0) {
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+ sources = VERIFY_CODES;
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+ }
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+ int codesLen = sources.length();
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+ Random rand = new Random(System.currentTimeMillis());
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+ StringBuilder verifyCode = new StringBuilder(verifySize);
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+ for (int i = 0; i < verifySize; i++) {
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+ verifyCode.append(sources.charAt(rand.nextInt(codesLen - 1)));
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+ }
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+ return verifyCode.toString();
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+ }
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+
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+ /**
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+ * 生成随机验证码文件,并返回验证码值
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+ *
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+ * @param w
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+ * @param h
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+ * @param outputFile
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+ * @param verifySize
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+ * @return
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+ * @throws IOException
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+ */
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+ public static String outputVerifyImage(int w, int h, File outputFile, int verifySize) throws IOException {
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+ String verifyCode = generateVerifyCode(verifySize);
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+ outputImage(w, h, outputFile, verifyCode);
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+ return verifyCode;
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+ }
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+
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+ /**
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+ * 输出随机验证码图片流,并返回验证码值
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+ *
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+ * @param w
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+ * @param h
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+ * @param os
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+ * @param verifySize
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+ * @return
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+ * @throws IOException
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+ */
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+ public static String outputVerifyImage(int w, int h, OutputStream os, int verifySize) throws IOException {
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+ String verifyCode = generateVerifyCode(verifySize);
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+ outputImage(w, h, os, verifyCode);
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+ return verifyCode;
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+ }
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+
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+ /**
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+ * 生成指定验证码图像文件
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+ *
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+ * @param w
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+ * @param h
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+ * @param outputFile
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+ * @param code
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+ * @throws IOException
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+ */
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+ public static void outputImage(int w, int h, File outputFile, String code) throws IOException {
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+ if (outputFile == null) {
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+ return;
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+ }
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+ File dir = outputFile.getParentFile();
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+ if (!dir.exists()) {
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+ dir.mkdirs();
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+ }
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+ try {
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+ outputFile.createNewFile();
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+ FileOutputStream fos = new FileOutputStream(outputFile);
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+ outputImage(w, h, fos, code);
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+ fos.close();
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+ } catch (IOException e) {
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+ throw e;
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+ }
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+ }
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+
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+ /**
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+ * 输出指定验证码图片流
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+ *
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+ * @param w
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+ * @param h
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+ * @param os
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+ * @param code
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+ * @throws IOException
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+ */
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+ public static void outputImage(int w, int h, OutputStream os, String code) throws IOException {
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+ int verifySize = code.length();
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+ BufferedImage image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
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+ Random rand = new Random();
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+ Graphics2D g2 = image.createGraphics();
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+ g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
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+ Color[] colors = new Color[5];
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+ Color[] colorSpaces = new Color[]{Color.WHITE, Color.CYAN, Color.GRAY, Color.LIGHT_GRAY, Color.MAGENTA,
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+ Color.ORANGE, Color.PINK, Color.YELLOW};
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+ float[] fractions = new float[colors.length];
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+ for (int i = 0; i < colors.length; i++) {
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+ colors[i] = colorSpaces[rand.nextInt(colorSpaces.length)];
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+ fractions[i] = rand.nextFloat();
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+ }
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+ Arrays.sort(fractions);
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+
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+ g2.setColor(Color.GRAY);// 设置边框色
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+ g2.fillRect(0, 0, w, h);
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+
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+ Color c = getRandColor(200, 250);
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+ g2.setColor(c);// 设置背景色
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+ g2.fillRect(0, 2, w, h - 4);
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+
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+ // 绘制干扰线
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+ Random random = new Random();
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+ g2.setColor(getRandColor(160, 200));// 设置线条的颜色
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+ for (int i = 0; i < 20; i++) {
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+ int x = random.nextInt(w - 1);
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+ int y = random.nextInt(h - 1);
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+ int xl = random.nextInt(6) + 1;
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+ int yl = random.nextInt(12) + 1;
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+ g2.drawLine(x, y, x + xl + 40, y + yl + 20);
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+ }
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+
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+ // 添加噪点
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+ float yawpRate = 0.05f;// 噪声率
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+ int area = (int) (yawpRate * w * h);
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+ for (int i = 0; i < area; i++) {
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+ int x = random.nextInt(w);
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+ int y = random.nextInt(h);
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+ int rgb = getRandomIntColor();
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+ image.setRGB(x, y, rgb);
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+ }
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+
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+ shear(g2, w, h, c);// 使图片扭曲
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+
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+ g2.setColor(getRandColor(100, 160));
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+ int fontSize = h - 4;
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+ Font font = new Font("Algerian", Font.ITALIC, fontSize);
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+ g2.setFont(font);
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+ char[] chars = code.toCharArray();
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+ for (int i = 0; i < verifySize; i++) {
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+ AffineTransform affine = new AffineTransform();
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+ affine.setToRotation(Math.PI / 4 * rand.nextDouble() * (rand.nextBoolean() ? 1 : -1),
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+ (w / verifySize) * i + fontSize / 2, h / 2);
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+ g2.setTransform(affine);
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+ g2.drawChars(chars, i, 1, ((w - 10) / verifySize) * i + 5, h / 2 + fontSize / 2 - 10);
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+ }
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+
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+ g2.dispose();
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+ ImageIO.write(image, "jpg", os);
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+ }
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+
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+ private static Color getRandColor(int fc, int bc) {
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+ if (fc > 255) {
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+ fc = 255;
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+ }
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+ if (bc > 255) {
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+ bc = 255;
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+ }
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+ int r = fc + random.nextInt(bc - fc);
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+ int g = fc + random.nextInt(bc - fc);
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+ int b = fc + random.nextInt(bc - fc);
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+ return new Color(r, g, b);
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+ }
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+
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+ private static int getRandomIntColor() {
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+ int[] rgb = getRandomRgb();
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+ int color = 0;
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+ for (int c : rgb) {
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+ color = color << 8;
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+ color = color | c;
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+ }
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+ return color;
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+ }
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+
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+ private static int[] getRandomRgb() {
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+ int[] rgb = new int[3];
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+ for (int i = 0; i < 3; i++) {
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+ rgb[i] = random.nextInt(255);
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+ }
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+ return rgb;
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+ }
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+
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+ private static void shear(Graphics g, int w1, int h1, Color color) {
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+ shearX(g, w1, h1, color);
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+ shearY(g, w1, h1, color);
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+ }
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+
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+ private static void shearX(Graphics g, int w1, int h1, Color color) {
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+
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+ int period = random.nextInt(2);
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+
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+ boolean borderGap = true;
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+ int frames = 1;
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+ int phase = random.nextInt(2);
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+
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+ for (int i = 0; i < h1; i++) {
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+ double d = (double) (period >> 1)
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+ * Math.sin((double) i / (double) period + (6.2831853071795862D * (double) phase) / (double) frames);
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+ g.copyArea(0, i, w1, 1, (int) d, 0);
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+ if (borderGap) {
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+ g.setColor(color);
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+ g.drawLine((int) d, i, 0, i);
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+ g.drawLine((int) d + w1, i, w1, i);
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+ }
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+ }
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+
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+ }
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+
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+ private static void shearY(Graphics g, int w1, int h1, Color color) {
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+
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+ int period = random.nextInt(40) + 10; // 50;
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+
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+ boolean borderGap = true;
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+ int frames = 20;
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+ int phase = 7;
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+ for (int i = 0; i < w1; i++) {
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+ double d = (double) (period >> 1)
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+ * Math.sin((double) i / (double) period + (6.2831853071795862D * (double) phase) / (double) frames);
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+ g.copyArea(i, 0, 1, h1, 0, (int) d);
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+ if (borderGap) {
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+ g.setColor(color);
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+ g.drawLine(i, (int) d, i, 0);
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+ g.drawLine(i, (int) d + h1, i, h1);
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+ }
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+
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+ }
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+
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+ }
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+
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+ public static class VerifyCode {
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+ /**
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+ * 生成的字符串验证码
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+ */
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+ private String code;
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+ /**
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+ * 验证码字符串的加密
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+ */
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+ private String md5Code;
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+ /**
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+ * 验证码生成的图片(base64格式)
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+ */
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+ private String base64Image;
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+
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+ public VerifyCode(String code, String base64Image) {
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+ this.code = code;
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+ this.base64Image = base64Image;
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+ }
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+
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+ public String getCode() {
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+ return code;
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+ }
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+
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+ public void setCode(String code) {
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+ this.code = code;
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+ }
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+
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+ public String getMd5Code() throws Exception {
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+ if (this.code != null) {
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+ md5Code = code;
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+ for (int i = 0; i < 3; i++) {
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+ md5Code = Md5Util.MD5To16Bit(md5Code);
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+ }
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+ }
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+ return md5Code;
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+ }
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+
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+ public String getBase64Image() {
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+ return base64Image;
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+ }
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+
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+ public void setBase64Image(String base64Image) {
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+ this.base64Image = base64Image;
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+ }
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+ }
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+
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+ public static void main(String[] args) throws Exception {
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+
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+ VerifyCode verifyCode = createVerifyCode(200, 80, 4);
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+ System.out.println(verifyCode.getCode());
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+ System.out.println(verifyCode.getMd5Code());
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+ System.out.println(verifyCode.getBase64Image());
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+ }
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+
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+}
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