MyBatis的常见错误总结

把MyBatis的常见错误总结一下。。

UserMapper：

<mapper namespace="com.ydweb.data.dao.UserMapper">
    
    <resultMap type="com.ydweb.data.model.UserBean" id="UserBean">
        <result property="id" column="id" />
        <result property="username" column="username" />
        <result property="password" column="password" />
    </resultMap>

    <!-- 
        根据id查询得到一个user对象
        <select  >
     -->
    <select id="getUser" resultType="com.ydweb.data.model.UserBean" parameterType="int" >
        select * from Users where id=#{id}
    </select>
</mapper>

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