DictMapper.xml

<?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.example.demo.mapper.SysDictMapper">

	<select id="getDictByCode" resultType="com.example.demo.model.SysDict">
        select
            id,data_type as dataType,data_code as dataCode,data_value as dataValue,create_time as createTime
        from sys_dict
        where data_code=#{dataCode}
	</select>


    <insert id="addDict"
            parameterType="com.example.demo.model.SysDict">
	  insert into sys_dict(
            data_type,data_code,data_value,create_time
	  )
	  values
	  (
          #{dataType},
          #{dataCode},
          #{dataValue},
          now()
	  )
	</insert>
</mapper>