<?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.zehong.system.mapper.DecryptMapper"> <!--管道--> <resultMap type="keyInformation" id="keyInformationResult"> <result property="keyId" column="key_id" /> <result property="qybm" column="qybm" /> <result property="secretKey" column="secret_key" /> </resultMap> <!--查询企业秘钥--> <select id="selectkey" resultMap="keyInformationResult"> select * from key_information where qybm= #{qybm} limit 0,1 </select> </mapper>