diff --git a/common/src/main/java/com/jeesite/common/lang/StringUtils.java b/common/src/main/java/com/jeesite/common/lang/StringUtils.java
index 2140ede7..2aceba28 100644
--- a/common/src/main/java/com/jeesite/common/lang/StringUtils.java
+++ b/common/src/main/java/com/jeesite/common/lang/StringUtils.java
@@ -270,7 +270,7 @@ public class StringUtils extends org.apache.commons.lang3.StringUtils {
 	}
 	
 	/**
-	 * 驼峰命名法工具
+	 * 转换为驼峰命名法
 	 * @return
 	 * 		camelCase("hello_world") == "helloWorld" 
 	 * 		capCamelCase("hello_world") == "HelloWorld"
@@ -283,37 +283,35 @@ public class StringUtils extends org.apache.commons.lang3.StringUtils {
         s = s.toLowerCase();
         StringBuilder sb = new StringBuilder(s.length());
         boolean upperCase = false;
-        for (int i = 0; i < s.length(); i++) {
+        for (int i = 0, j = 0; i < s.length(); i++) {
             char c = s.charAt(i);
             if (c == UNDERLINE.charAt(0) || c == MINUS.charAt(0)) {
-                upperCase = i != 1; // 不允许第二个字符是大写
+                upperCase = j > 1; // 不允许第二个字符是大写
             } else if (upperCase) {
                 sb.append(Character.toUpperCase(c));
                 upperCase = false;
+				j++;
             } else {
                 sb.append(c);
+				j++;
             }
         }
         return sb.toString();
     }
 
     /**
-	 * 驼峰命名法工具
+	 * 转换为驼峰命名法（首字母大写）
 	 * @return
 	 * 		camelCase("hello_world") == "helloWorld" 
 	 * 		capCamelCase("hello_world") == "HelloWorld"
 	 * 		uncamelCase("helloWorld") = "hello_world"
 	 */
     public static String capCamelCase(String s) {
-        if (s == null) {
-            return null;
-        }
-        s = camelCase(s);
-        return s.substring(0, 1).toUpperCase() + s.substring(1);
+        return cap(camelCase(s));
     }
     
     /**
-	 * 驼峰命名法工具
+	 * 取消驼峰命名发
 	 * @return
 	 * 		camelCase("hello_world") == "helloWorld" 
 	 * 		capCamelCase("hello_world") == "HelloWorld"
diff --git a/common/src/test/java/com/jeesite/test/lang/StringUtilsTest.java b/common/src/test/java/com/jeesite/test/lang/StringUtilsTest.java
new file mode 100644
index 00000000..18ed77ce
--- /dev/null
+++ b/common/src/test/java/com/jeesite/test/lang/StringUtilsTest.java
@@ -0,0 +1,32 @@
+/**
+ * Copyright (c) 2013-Now http://jeesite.com All rights reserved.
+ * No deletion without permission, or be held responsible to law.
+ */
+package com.jeesite.test.lang;
+
+import com.jeesite.common.lang.StringUtils;
+
+import java.text.ParseException;
+
+/**
+ * 字符串工具测试类
+ * @author ThinkGem
+ * @version 2025-09-18
+ */
+public class StringUtilsTest {
+
+	public static void main(String[] args) throws ParseException {
+		System.out.println(StringUtils.camelCase("id_name") + " = idName");
+		System.out.println(StringUtils.camelCase("_id_name") + " = idName");
+		System.out.println(StringUtils.camelCase("__id_name") + " = idName");
+		System.out.println(StringUtils.camelCase("a_id") + " = aid");
+		System.out.println(StringUtils.camelCase("a_b_id") + " = abId");
+		System.out.println(StringUtils.camelCase("__a_id") + " = aid");
+		System.out.println(StringUtils.camelCase("__a_b_id") + " = abId");
+		System.out.println(StringUtils.capCamelCase("id_name") + " = IdName");
+		System.out.println(StringUtils.capCamelCase("a_b_id_name") + " = AbIdName");
+		System.out.println(StringUtils.uncamelCase("abIdName") + " = ab_id_name");
+		System.out.println(StringUtils.uncamelCase("AbIdName") + " = ab_id_name");
+	}
+	
+}