diff --git a/src/main/java/cn/xf/basedemo/common/utils/StringUtil.java b/src/main/java/cn/xf/basedemo/common/utils/StringUtil.java
index 844163a..69359f1 100644
--- a/src/main/java/cn/xf/basedemo/common/utils/StringUtil.java
+++ b/src/main/java/cn/xf/basedemo/common/utils/StringUtil.java
@@ -10,10 +10,10 @@ package cn.xf.basedemo.common.utils;
 public class StringUtil {
 
     /**
-     * 驼峰命名法转下划线命名法
+     * 驼峰命名法转短横线命名法（kebab-case）
      *
      * @param camelCase 驼峰命名法字符串
-     * @return 下划线命名法字符串
+     * @return 短横线命名法字符串
      */
     public static String camelToKebabCase(String camelCase) {
         if (camelCase == null || camelCase.isEmpty()) {
@@ -26,4 +26,22 @@ public class StringUtil {
         // 转换为小写
         return result.toLowerCase();
     }
+
+    /**
+     * 驼峰命名法转下划线命名法（snake_case）
+     *
+     * @param camelCase 驼峰命名法字符串
+     * @return 下划线命名法字符串
+     */
+    public static String camelToSnakeCase(String camelCase) {
+        if (camelCase == null || camelCase.isEmpty()) {
+            return camelCase;
+        }
+
+        // 使用正则表达式将大写字母前插入一个"_"
+        String result = camelCase.replaceAll("([a-z])([A-Z])", "$1_$2");
+
+        // 转换为小写
+        return result.toLowerCase();
+    }
 }
diff --git a/src/main/java/cn/xf/basedemo/model/domain/User.java b/src/main/java/cn/xf/basedemo/model/domain/User.java
index c506b2f..978afe5 100644
--- a/src/main/java/cn/xf/basedemo/model/domain/User.java
+++ b/src/main/java/cn/xf/basedemo/model/domain/User.java
@@ -1,5 +1,7 @@
 package cn.xf.basedemo.model.domain;
 
+import com.baomidou.mybatisplus.annotation.IdType;
+import com.baomidou.mybatisplus.annotation.TableId;
 import com.baomidou.mybatisplus.annotation.TableField;
 import com.baomidou.mybatisplus.annotation.TableName;
 import lombok.Data;
@@ -17,6 +19,7 @@ import java.util.Date;
 @TableName(value = "xf_user")
 public class User {
 
+    @TableId(value = "id", type = IdType.AUTO)
     private Integer id;
 
     private String name;
diff --git a/src/main/resources/application-local.yml b/src/main/resources/application-local.yml
index 1964d39..64c3783 100644
--- a/src/main/resources/application-local.yml
+++ b/src/main/resources/application-local.yml
@@ -66,7 +66,7 @@ springdoc:
 
 mybatis-plus:
   configuration:
-    map-underscore-to-camel-case: false
+    map-underscore-to-camel-case: true
     auto-mapping-behavior: full
     #log-impl: org.apache.ibatis.logging.stdout.StdOutImpl #开启SQL语句打印
   mapper-locations: classpath*:mapper/**/*Mapper.xml
diff --git a/src/main/resources/application-pre.yml b/src/main/resources/application-pre.yml
index a172ef3..a911aa2 100644
--- a/src/main/resources/application-pre.yml
+++ b/src/main/resources/application-pre.yml
@@ -68,7 +68,7 @@ springdoc:
 
 mybatis-plus:
   configuration:
-    map-underscore-to-camel-case: false
+    map-underscore-to-camel-case: true
     auto-mapping-behavior: full
     #log-impl: org.apache.ibatis.logging.stdout.StdOutImpl #开启SQL语句打印
   mapper-locations: classpath*:mapper/**/*Mapper.xml