diff --git a/ruoyi-online/src/main/java/com/ruoyi/online/controller/OnlineDbController.java b/ruoyi-online/src/main/java/com/ruoyi/online/controller/OnlineDbController.java
new file mode 100644
index 0000000..7f63c09
--- /dev/null
+++ b/ruoyi-online/src/main/java/com/ruoyi/online/controller/OnlineDbController.java
@@ -0,0 +1,32 @@
+package com.ruoyi.online.controller;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.ruoyi.common.annotation.Anonymous;
+import com.ruoyi.common.core.controller.BaseController;
+import com.ruoyi.common.core.domain.BaseEntity;
+import com.ruoyi.common.core.page.TableDataInfo;
+import com.ruoyi.online.mapper.OnlineDbMapper;
+
+@RestController
+@RequestMapping("/online/db")
+@Anonymous
+public class OnlineDbController extends BaseController {
+
+    @Autowired
+    private OnlineDbMapper onlineDbMapper;
+
+    @GetMapping("/table/list")
+    public TableDataInfo selectDbTableList(BaseEntity baseEntity){
+        startPage();
+        return getDataTable(onlineDbMapper.selectDbTableList(baseEntity));
+    }
+
+    @GetMapping("/column/list")
+    public TableDataInfo selectDbColumnsListByTableName(String tableName){
+        return getDataTable(onlineDbMapper.selectDbColumnsListByTableName(tableName));
+    }
+}
diff --git a/ruoyi-online/src/main/java/com/ruoyi/online/mapper/OnlineDbMapper.java b/ruoyi-online/src/main/java/com/ruoyi/online/mapper/OnlineDbMapper.java
new file mode 100644
index 0000000..2b9a12a
--- /dev/null
+++ b/ruoyi-online/src/main/java/com/ruoyi/online/mapper/OnlineDbMapper.java
@@ -0,0 +1,11 @@
+package com.ruoyi.online.mapper;
+
+import java.util.List;
+import java.util.Map;
+
+import com.ruoyi.common.core.domain.BaseEntity;
+
+public interface OnlineDbMapper {
+    public List<Map<String,String>> selectDbTableList(BaseEntity baseEntity);
+    public List<Map<String,String>> selectDbColumnsListByTableName(String tableName);
+}
diff --git a/ruoyi-online/src/main/resources/mapper/online/OnlineDbMapper.xml b/ruoyi-online/src/main/resources/mapper/online/OnlineDbMapper.xml
new file mode 100644
index 0000000..224f736
--- /dev/null
+++ b/ruoyi-online/src/main/resources/mapper/online/OnlineDbMapper.xml
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE mapper
+PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
+"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="com.ruoyi.online.mapper.OnlineDbMapper">
+    <select id="selectDbTableList" resultType="java.util.Map">
+        select * from information_schema.tables
+		where table_schema = (select database())
+	</select>
+   
+    <select id="selectDbColumnsListByTableName" parameterType="String" resultType="java.util.Map">
+        select * from information_schema.columns 
+        where  table_schema = (select database())
+        and table_name = #{tableName};
+	</select>
+</mapper>
\ No newline at end of file
diff --git a/sql/online.sql b/sql/online.sql
index 4aff7dc..66e633b 100644
--- a/sql/online.sql
+++ b/sql/online.sql
@@ -18,9 +18,16 @@ CREATE TABLE online_mb (
     PRIMARY KEY (mb_id)
 ) ENGINE = InnoDB  COMMENT = '在线接口';
 
+INSERT INTO sys_menu (menu_name, parent_id, order_num, path, component, query, is_frame, is_cache, menu_type, visible, `status`, perms, icon, create_by, create_time, update_by, update_time, remark) VALUES ('Online', 0, 5, 'online', NULL, NULL, 1, 0, 'M', '0', '0', NULL, 'international', 'admin', '2024-03-07 19:38:34', '', NULL, '');
+
+-- 按钮父菜单ID
+SELECT @parentId := LAST_INSERT_ID();
+
 -- 菜单 SQL
 insert into sys_menu (menu_name, parent_id, order_num, path, component, is_frame, is_cache, menu_type, visible, status, perms, icon, create_by, create_time, update_by, update_time, remark)
-values('mybatis在线接口', '3', '1', 'mb', 'online/mb/index', 1, 0, 'C', '0', '0', 'online:mb:list', 'code', 'admin', sysdate(), '', null, 'mybatis在线接口菜单');
+values('mybatis在线接口', @parentId, '1', 'mb', 'online/mb/index', 1, 0, 'C', '0', '0', 'online:mb:list', 'code', 'admin', sysdate(), '', null, 'mybatis在线接口菜单');
+
+INSERT INTO sys_menu (menu_name, parent_id, order_num, path, component, query, is_frame, is_cache, menu_type, visible, status, perms, icon, create_by, create_time, update_by, update_time, remark) VALUES ('数据库', @parentId, 1, 'db', 'online/db/index', NULL, 1, 0, 'C', '0', '0', 'admin', 'table', 'admin', '2024-03-07 19:48:24', 'admin', '2024-03-07 19:54:46', '');
 
 -- 按钮父菜单ID
 SELECT @parentId := LAST_INSERT_ID();