From a1cf719d268a9d16db81ece94e75037c844f898f Mon Sep 17 00:00:00 2001
From: 疯狂的狮子li <15040126243@163.com>
Date: 星期二, 18 二月 2020 14:47:23 +0800
Subject: [PATCH] Merge branch 'master' of https://gitee.com/y_project/RuoYi-Vue
---
ruoyi/src/main/java/com/ruoyi/common/utils/VerifyCodeUtils.java | 226 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 226 insertions(+), 0 deletions(-)
diff --git a/ruoyi/src/main/java/com/ruoyi/common/utils/VerifyCodeUtils.java b/ruoyi/src/main/java/com/ruoyi/common/utils/VerifyCodeUtils.java
new file mode 100644
index 0000000..912bc04
--- /dev/null
+++ b/ruoyi/src/main/java/com/ruoyi/common/utils/VerifyCodeUtils.java
@@ -0,0 +1,226 @@
+package com.ruoyi.common.utils;
+
+import java.awt.Color;
+import java.awt.Font;
+import java.awt.Graphics;
+import java.awt.Graphics2D;
+import java.awt.RenderingHints;
+import java.awt.geom.AffineTransform;
+import java.awt.image.BufferedImage;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.security.SecureRandom;
+import java.util.Arrays;
+import java.util.Random;
+import javax.imageio.ImageIO;
+
+/**
+ * 楠岃瘉鐮佸伐鍏风被
+ *
+ * @author ruoyi
+ */
+public class VerifyCodeUtils
+{
+ // 浣跨敤鍒癆lgerian瀛椾綋锛岀郴缁熼噷娌℃湁鐨勮瘽闇�瑕佸畨瑁呭瓧浣擄紝瀛椾綋鍙樉绀哄ぇ鍐欙紝鍘绘帀浜�1,0,i,o鍑犱釜瀹规槗娣锋穯鐨勫瓧绗�
+ public static final String VERIFY_CODES = "123456789ABCDEFGHJKLMNPQRSTUVWXYZ";
+
+ private static Random random = new SecureRandom();
+
+ /**
+ * 浣跨敤绯荤粺榛樿瀛楃婧愮敓鎴愰獙璇佺爜
+ *
+ * @param verifySize 楠岃瘉鐮侀暱搴�
+ * @return
+ */
+ public static String generateVerifyCode(int verifySize)
+ {
+ return generateVerifyCode(verifySize, VERIFY_CODES);
+ }
+
+ /**
+ * 浣跨敤鎸囧畾婧愮敓鎴愰獙璇佺爜
+ *
+ * @param verifySize 楠岃瘉鐮侀暱搴�
+ * @param sources 楠岃瘉鐮佸瓧绗︽簮
+ * @return
+ */
+ public static String generateVerifyCode(int verifySize, String sources)
+ {
+ if (sources == null || sources.length() == 0)
+ {
+ sources = VERIFY_CODES;
+ }
+ int codesLen = sources.length();
+ Random rand = new Random(System.currentTimeMillis());
+ StringBuilder verifyCode = new StringBuilder(verifySize);
+ for (int i = 0; i < verifySize; i++)
+ {
+ verifyCode.append(sources.charAt(rand.nextInt(codesLen - 1)));
+ }
+ return verifyCode.toString();
+ }
+
+ /**
+ * 杈撳嚭鎸囧畾楠岃瘉鐮佸浘鐗囨祦
+ *
+ * @param w
+ * @param h
+ * @param os
+ * @param code
+ * @throws IOException
+ */
+ public static void outputImage(int w, int h, OutputStream os, String code) throws IOException
+ {
+ int verifySize = code.length();
+ BufferedImage image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
+ Random rand = new Random();
+ Graphics2D g2 = image.createGraphics();
+ g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
+ Color[] colors = new Color[5];
+ Color[] colorSpaces = new Color[] { Color.WHITE, Color.CYAN, Color.GRAY, Color.LIGHT_GRAY, Color.MAGENTA,
+ Color.ORANGE, Color.PINK, Color.YELLOW };
+ float[] fractions = new float[colors.length];
+ for (int i = 0; i < colors.length; i++)
+ {
+ colors[i] = colorSpaces[rand.nextInt(colorSpaces.length)];
+ fractions[i] = rand.nextFloat();
+ }
+ Arrays.sort(fractions);
+
+ g2.setColor(Color.GRAY);// 璁剧疆杈规鑹�
+ g2.fillRect(0, 0, w, h);
+
+ Color c = getRandColor(200, 250);
+ g2.setColor(c);// 璁剧疆鑳屾櫙鑹�
+ g2.fillRect(0, 2, w, h - 4);
+
+ // 缁樺埗骞叉壈绾�
+ Random random = new Random();
+ g2.setColor(getRandColor(160, 200));// 璁剧疆绾挎潯鐨勯鑹�
+ for (int i = 0; i < 20; i++)
+ {
+ int x = random.nextInt(w - 1);
+ int y = random.nextInt(h - 1);
+ int xl = random.nextInt(6) + 1;
+ int yl = random.nextInt(12) + 1;
+ g2.drawLine(x, y, x + xl + 40, y + yl + 20);
+ }
+
+ // 娣诲姞鍣偣
+ float yawpRate = 0.05f;// 鍣０鐜�
+ int area = (int) (yawpRate * w * h);
+ for (int i = 0; i < area; i++)
+ {
+ int x = random.nextInt(w);
+ int y = random.nextInt(h);
+ int rgb = getRandomIntColor();
+ image.setRGB(x, y, rgb);
+ }
+
+ shear(g2, w, h, c);// 浣垮浘鐗囨壄鏇�
+
+ g2.setColor(getRandColor(100, 160));
+ int fontSize = h - 4;
+ Font font = new Font("Algerian", Font.ITALIC, fontSize);
+ g2.setFont(font);
+ char[] chars = code.toCharArray();
+ for (int i = 0; i < verifySize; i++)
+ {
+ AffineTransform affine = new AffineTransform();
+ affine.setToRotation(Math.PI / 4 * rand.nextDouble() * (rand.nextBoolean() ? 1 : -1),
+ (w / verifySize) * i + fontSize / 2, h / 2);
+ g2.setTransform(affine);
+ g2.drawChars(chars, i, 1, ((w - 10) / verifySize) * i + 5, h / 2 + fontSize / 2 - 10);
+ }
+
+ g2.dispose();
+ ImageIO.write(image, "jpg", os);
+ }
+
+ 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);
+ int g = fc + random.nextInt(bc - fc);
+ int b = fc + random.nextInt(bc - fc);
+ return new Color(r, g, b);
+ }
+
+ private static int getRandomIntColor()
+ {
+ int[] rgb = getRandomRgb();
+ int color = 0;
+ for (int c : rgb)
+ {
+ color = color << 8;
+ color = color | c;
+ }
+ return color;
+ }
+
+ private static int[] getRandomRgb()
+ {
+ int[] rgb = new int[3];
+ for (int i = 0; i < 3; i++)
+ {
+ rgb[i] = random.nextInt(255);
+ }
+ return rgb;
+ }
+
+ private static void shear(Graphics g, int w1, int h1, Color color)
+ {
+ shearX(g, w1, h1, color);
+ shearY(g, w1, h1, color);
+ }
+
+ private static void shearX(Graphics g, int w1, int h1, Color color)
+ {
+
+ int period = random.nextInt(2);
+
+ boolean borderGap = true;
+ int frames = 1;
+ int phase = random.nextInt(2);
+
+ for (int i = 0; i < h1; i++)
+ {
+ double d = (double) (period >> 1)
+ * Math.sin((double) i / (double) period + (6.2831853071795862D * (double) phase) / (double) frames);
+ g.copyArea(0, i, w1, 1, (int) d, 0);
+ if (borderGap)
+ {
+ g.setColor(color);
+ g.drawLine((int) d, i, 0, i);
+ g.drawLine((int) d + w1, i, w1, i);
+ }
+ }
+
+ }
+
+ private static void shearY(Graphics g, int w1, int h1, Color color)
+ {
+
+ int period = random.nextInt(40) + 10; // 50;
+
+ boolean borderGap = true;
+ int frames = 20;
+ int phase = 7;
+ for (int i = 0; i < w1; i++)
+ {
+ double d = (double) (period >> 1)
+ * Math.sin((double) i / (double) period + (6.2831853071795862D * (double) phase) / (double) frames);
+ g.copyArea(i, 0, 1, h1, 0, (int) d);
+ if (borderGap)
+ {
+ g.setColor(color);
+ g.drawLine(i, (int) d, i, 0);
+ g.drawLine(i, (int) d + h1, i, h1);
+ }
+
+ }
+ }
+}
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