更换图形验证码工具，其他细节优化

eladmin-system/pom.xml

@@ -15,22 +15,7 @@
         <jjwt.version>0.9.1</jjwt.version>
     </properties>
 
-    <repositories>
-        <repository>
-            <id>jitpack.io</id>
-            <url>https://jitpack.io</url>
-        </repository>
-    </repositories>
-
     <dependencies>
-
-        <!--    验证码    -->
-        <dependency>
-            <groupId>com.github.whvcse</groupId>
-            <artifactId>EasyCaptcha</artifactId>
-            <version>1.5.0</version>
-        </dependency>
-
         <dependency>
             <groupId>me.zhengjie</groupId>
             <artifactId>eladmin-generator</artifactId>

eladmin-system/src/main/java/me/zhengjie/modules/security/rest/AuthenticationController.java

@@ -12,6 +12,7 @@ import me.zhengjie.modules.security.security.AuthenticationInfo;
 import me.zhengjie.modules.security.security.AuthorizationUser;
 import me.zhengjie.modules.security.security.ImgResult;
 import me.zhengjie.modules.security.security.JwtUser;
+import me.zhengjie.modules.security.utils.VerifyCodeUtils;
 import me.zhengjie.utils.EncryptUtils;
 import me.zhengjie.modules.security.utils.JwtTokenUtil;
 import me.zhengjie.utils.SecurityUtils;
@@ -102,21 +103,16 @@ public class AuthenticationController {
      */
     @GetMapping(value = "vCode")
     public ImgResult getCode(HttpServletResponse response) throws IOException {
-        // 三个参数分别为宽、高、位数
-        SpecCaptcha specCaptcha = new SpecCaptcha(105, 33, 4);
-
-        // 设置类型，纯数字、纯字母、字母数字混合
-        specCaptcha.setCharType(Captcha.TYPE_DEFAULT);
-
-        // 生成的验证码
-        String code = specCaptcha.text();
 
+        //生成随机字串
+        String verifyCode = VerifyCodeUtils.generateVerifyCode(4);
         String uuid = IdUtil.simpleUUID();
-        redisService.saveCode(uuid,code);
-        response.addHeader("codeUuid",uuid);
+        redisService.saveCode(uuid,verifyCode);
+        // 生成图片
+        int w = 111, h = 36;
         ByteArrayOutputStream stream = new ByteArrayOutputStream();
+        VerifyCodeUtils.outputImage(w, h, stream, verifyCode);
         try {
-            specCaptcha.out(stream);
             return new ImgResult(Base64.encode(stream.toByteArray()),uuid);
         } catch (Exception e) {
             e.printStackTrace();

eladmin-system/src/main/java/me/zhengjie/modules/security/utils/VerifyCodeUtils.java

@@ -0,0 +1,204 @@
+package me.zhengjie.modules.security.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.util.Arrays;
+import java.util.Random;
+import javax.imageio.ImageIO;
+
+/**
+ * @author https://blog.csdn.net/ruixue0117/article/details/22829557
+ * @date 2019-6-20 17:28:53
+ */
+public class VerifyCodeUtils{
+
+    //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
+    public static final String VERIFY_CODES = "23456789ABCDEFGHJKLMNPQRSTUVWXYZ";
+    private static Random random = new Random();
+
+
+    /**
+     * 使用系统默认字符源生成验证码
+     * @param verifySize	验证码长度
+     * @return
+     */
+    public static String generateVerifyCode(int verifySize){
+        return generateVerifyCode(verifySize, VERIFY_CODES);
+    }
+    /**
+     * 使用指定源生成验证码
+     * @param verifySize	验证码长度
+     * @param sources	验证码字符源
+     * @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();
+    }
+
+    /**
+     * 输出指定验证码图片流
+     * @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);// 设置边框色
+        g2.fillRect(0, 0, w, h);
+
+        Color c = getRandColor(200, 250);
+        g2.setColor(c);// 设置背景色
+        g2.fillRect(0, 2, w, h-4);
+
+        //绘制干扰线
+        Random random = new Random();
+        g2.setColor(getRandColor(160, 200));// 设置线条的颜色
+        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);
+        }
+
+        // 添加噪点
+        float yawpRate = 0.05f;// 噪声率
+        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);// 使图片扭曲
+
+        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);
+            }
+
+        }
+
+    }
+}

eladmin-system/src/main/resources/template/generator/admin/Dto.ftl

@@ -24,9 +24,7 @@ public class ${className}DTO implements Serializable {
     <#list columns as column>
 
     <#if column.columnComment != ''>
-    /**
-     * ${column.columnComment}
-     */
+    // ${column.columnComment}
     </#if>
     <#if column.columnKey = 'PRI'>
     <#if !auto && pkColumnType = 'Long'>

eladmin-system/src/main/resources/template/generator/admin/Entity.ftl

@@ -22,9 +22,7 @@ public class ${className} implements Serializable {
     <#list columns as column>
 
     <#if column.columnComment != ''>
-    /**
-     * ${column.columnComment}
-     */
+    // ${column.columnComment}
     </#if>
     <#if column.columnKey = 'PRI'>
     @Id