mybatis 写法

<?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.bysoft.springmybatismanual.dao.UserDao">
    <resultMap id="BaseResultMap" type="com.bysoft.springmybatismanual.entity.User" >
        <id column="id" property="id" jdbcType="INTEGER" />
        <result column="user_name" property="userName" jdbcType="VARCHAR" />
        <result column="password" property="password" jdbcType="VARCHAR" />
        <result column="age" property="age" jdbcType="INTEGER" />
    </resultMap>

    <sql id="Base_Column_List" >
        id, user_name, password, age
    </sql>

    <select id="findAll" resultMap="BaseResultMap">
        select
        <include refid="Base_Column_List" />
        from user_t
    </select>

    <insert id="addUser" parameterType="com.bysoft.springmybatismanual.entity.User">
        insert into user_t (user_name, password, age)
        values (#{userName,jdbcType=VARCHAR}, #{password,jdbcType=VARCHAR},
        #{age,jdbcType=INTEGER})
    </insert>

    <update id="updateUser" parameterType="com.bysoft.springmybatismanual.entity.User" >
        update user_t
        set user_name = #{userName,jdbcType=VARCHAR},
        password = #{password,jdbcType=VARCHAR},
        age = #{age,jdbcType=INTEGER}
        where id = #{id,jdbcType=INTEGER}
    </update>

    <delete id="deleteUser" parameterType="java.lang.Integer" >
            delete from user_t
            where id = #{id,jdbcType=INTEGER}
        </delete>
</mapper>