diff --git a/src/main/java/com/lovenav/dao/NavDao.java b/src/main/java/com/lovenav/dao/NavDao.java
new file mode 100644
index 0000000..1bbabe0
--- /dev/null
+++ b/src/main/java/com/lovenav/dao/NavDao.java
@@ -0,0 +1,25 @@
+package com.lovenav.dao;
+
+import com.lovenav.entity.Nav;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+
+@Repository
+public interface NavDao {
+    int deleteByNavName(String navName);
+
+    int insert(Nav record);
+
+    int insertSelective(Nav record);
+
+    Nav selectByPrimaryKey(Integer id);
+
+    int updateByName(Nav record);
+
+    int updateByPrimaryKey(Nav record);
+
+    Nav selectAlreadyExist(Nav nav);
+
+    List<Nav> selectAllNav();
+}
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diff --git a/src/main/java/com/lovenav/entity/Nav.java b/src/main/java/com/lovenav/entity/Nav.java
new file mode 100644
index 0000000..670e2f0
--- /dev/null
+++ b/src/main/java/com/lovenav/entity/Nav.java
@@ -0,0 +1,32 @@
+package com.lovenav.entity;
+
+import java.io.Serializable;
+import lombok.Data;
+
+/**
+ * ln_nav
+ */
+@Data
+public class Nav implements Serializable {
+    /**
+     * id
+     */
+    private Integer id;
+
+    /**
+     * 导航名称
+     */
+    private String navName;
+
+    /**
+     * 跳转地址
+     */
+    private String url;
+
+    /**
+     * 状态
+     */
+    private Integer status;
+
+    private static final long serialVersionUID = 1L;
+}
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diff --git a/src/main/resources/mybatis/NavDao.xml b/src/main/resources/mybatis/NavDao.xml
new file mode 100644
index 0000000..bd1118a
--- /dev/null
+++ b/src/main/resources/mybatis/NavDao.xml
@@ -0,0 +1,85 @@
+<?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.lovenav.dao.NavDao">
+  <resultMap id="BaseResultMap" type="com.lovenav.entity.Nav">
+    <id column="id" jdbcType="INTEGER" property="id" />
+    <result column="nav_name" jdbcType="VARCHAR" property="navName" />
+    <result column="url" jdbcType="VARCHAR" property="url" />
+    <result column="status" jdbcType="INTEGER" property="status" />
+  </resultMap>
+  <sql id="Base_Column_List">
+    id, nav_name, url, `status`
+  </sql>
+  <select id="selectByPrimaryKey" parameterType="java.lang.Integer" resultMap="BaseResultMap">
+    select 
+    <include refid="Base_Column_List" />
+    from ln_nav
+    where id = #{id,jdbcType=INTEGER}
+  </select>
+    <select id="selectAlreadyExist" resultType="com.lovenav.entity.Nav" resultMap="BaseResultMap">
+      select
+      <include refid="Base_Column_List" />
+      from ln_nav
+      where nav_name = #{navName,jdbcType=VARCHAR}
+    </select>
+  <select id="selectAllNav" resultMap="BaseResultMap">
+    select * from ln_nav;
+  </select>
+  <delete id="deleteByNavName" parameterType="java.lang.String">
+    delete from ln_nav
+    where nav_name = #{navName,jdbcType=VARCHAR}
+  </delete>
+  <insert id="insert" keyColumn="id" keyProperty="id" parameterType="com.lovenav.entity.Nav" useGeneratedKeys="true">
+    insert into ln_nav (nav_name, url, `status`
+      )
+    values (#{navName,jdbcType=VARCHAR}, #{url,jdbcType=VARCHAR}, #{status,jdbcType=INTEGER}
+      )
+  </insert>
+  <insert id="insertSelective" keyColumn="id" keyProperty="id" parameterType="com.lovenav.entity.Nav" useGeneratedKeys="true">
+    insert into ln_nav
+    <trim prefix="(" suffix=")" suffixOverrides=",">
+      <if test="navName != null">
+        nav_name,
+      </if>
+      <if test="url != null">
+        url,
+      </if>
+      <if test="status != null">
+        `status`,
+      </if>
+    </trim>
+    <trim prefix="values (" suffix=")" suffixOverrides=",">
+      <if test="navName != null">
+        #{navName,jdbcType=VARCHAR},
+      </if>
+      <if test="url != null">
+        #{url,jdbcType=VARCHAR},
+      </if>
+      <if test="status != null">
+        #{status,jdbcType=INTEGER},
+      </if>
+    </trim>
+  </insert>
+  <update id="updateByName" parameterType="com.lovenav.entity.Nav">
+    update ln_nav
+    <set>
+      <if test="navName != null">
+        nav_name = #{navName,jdbcType=VARCHAR},
+      </if>
+      <if test="url != null">
+        url = #{url,jdbcType=VARCHAR},
+      </if>
+      <if test="status != null">
+        `status` = #{status,jdbcType=INTEGER},
+      </if>
+    </set>
+    where nav_name = #{navName,jdbcType=VARCHAR}
+  </update>
+  <update id="updateByPrimaryKey" parameterType="com.lovenav.entity.Nav">
+    update ln_nav
+    set nav_name = #{navName,jdbcType=VARCHAR},
+      url = #{url,jdbcType=VARCHAR},
+      `status` = #{status,jdbcType=INTEGER}
+    where id = #{id,jdbcType=INTEGER}
+  </update>
+</mapper>
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