自定义字符串验证码生成器

bonus-common/bonus-common-core/src/main/java/com/bonus/common/core/utils/ip/IpUtils.java

@@ -72,10 +72,6 @@ public class IpUtils
             ip = request.getHeader("X-Real-IP");
         }
 
-
-        if (ip == null || ip.length() == 0 || IP_UNKNOWN.equalsIgnoreCase(ip)){
-            ip = request.getRemoteAddr();
-        }
         String remoteAddr = request.getRemoteAddr();
         if (!StringUtils.isEmpty(ip) && !StringUtils.isEmpty(remoteAddr) && !ObjectUtils.isEmpty(trustedProxy)) {
             //使用代理的情况下确定代理是可信的

bonus-gateway/src/main/java/com/bonus/gateway/config/CaptchaConfig.java

@@ -32,10 +32,12 @@ public class CaptchaConfig
         properties.setProperty(KAPTCHA_TEXTPRODUCER_FONT_SIZE, "40");
         // KAPTCHA_SESSION_KEY
         properties.setProperty(KAPTCHA_SESSION_CONFIG_KEY, "kaptchaCode");
-        // 验证码文本字符长度 默认为5
+//        // 验证码文本字符长度 默认为5,这个在自定义文本生成器里定义
-        properties.setProperty(KAPTCHA_TEXTPRODUCER_CHAR_LENGTH, "6");
+//        properties.setProperty(KAPTCHA_TEXTPRODUCER_CHAR_LENGTH, "4");
         // 验证码文本字体样式 默认为new Font("Arial", 1, fontSize), new Font("Courier", 1, fontSize)
         properties.setProperty(KAPTCHA_TEXTPRODUCER_FONT_NAMES, "Arial,Courier");
+
+        properties.setProperty(KAPTCHA_TEXTPRODUCER_IMPL, "com.bonus.gateway.config.MixedTextCreator");
         // 图片样式 水纹com.google.code.kaptcha.impl.WaterRipple 鱼眼com.google.code.kaptcha.impl.FishEyeGimpy 阴影com.google.code.kaptcha.impl.ShadowGimpy
 //        properties.setProperty(KAPTCHA_OBSCURIFICATOR_IMPL, "com.google.code.kaptcha.impl.ShadowGimpy");
         Config config = new Config(properties);

bonus-gateway/src/main/java/com/bonus/gateway/config/KaptchaTextCreator.java

@@ -4,7 +4,7 @@ import java.util.Random;
 import com.google.code.kaptcha.text.impl.DefaultTextCreator;
 
 /**
- * 验证码文本生成器
+ * 数学计算验证码文本生成器
  * 
  * @author bonus
  */

bonus-gateway/src/main/java/com/bonus/gateway/config/MixedTextCreator.java

@@ -0,0 +1,44 @@
+package com.bonus.gateway.config;
+
+
+import com.google.code.kaptcha.text.TextProducer;
+import java.util.Random;
+
+public class MixedTextCreator implements TextProducer {
+    private static final String NUMBERS = "23456789";
+    private static final String LETTERS = "abcdefghijkmnopqrstuvwxyz";
+    private final Random random = new Random();
+
+    @Override
+    public String getText() {
+        // 确保至少包含2个数字和2个字母
+        StringBuilder text = new StringBuilder(6);
+
+        // 添加2个随机数字
+        for (int i = 0; i < 2; i++) {
+            text.append(NUMBERS.charAt(random.nextInt(NUMBERS.length())));
+        }
+
+        // 添加2个随机字母
+        for (int i = 0; i < 2; i++) {
+            text.append(LETTERS.charAt(random.nextInt(LETTERS.length())));
+        }
+
+        // 添加剩余2个随机字符（可以是数字或字母）
+        String allChars = NUMBERS + LETTERS;
+        for (int i = 0; i < 2; i++) {
+            text.append(allChars.charAt(random.nextInt(allChars.length())));
+        }
+
+        // 打乱字符顺序
+        char[] chars = text.toString().toCharArray();
+        for (int i = chars.length - 1; i > 0; i--) {
+            int index = random.nextInt(i + 1);
+            char temp = chars[index];
+            chars[index] = chars[i];
+            chars[i] = temp;
+        }
+
+        return new String(chars);
+    }
+}