ssm/build/classes/mapper/admin.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">
<!-- 配置关于管理员表的 MyBatis映射文件 -->
<!-- namespace：必须与对应的接口全类名一致 id:必须与对应接口的某个对应的方法名一致 -->
<mapper namespace="com.dao.AdminDAO">
	<resultMap type="admin" id="adminMap">
		<id property="adminid" column="adminid" />
		<result property="username" column="username" />
		<result property="password" column="password" />
		<result property="realname" column="realname" />
		<result property="contact" column="contact" />
		<result property="addtime" column="addtime" />
	</resultMap>

	<!-- 管理员表 插入SQL语句  AdminDAO通过ID(insertAdmin)调用此配置 -->
	<insert id="insertAdmin" parameterType="admin">  
		insert into admin(adminid  , username  , password  , realname  , contact  , addtime ) values(#{adminid}  , #{username}   , #{password}   , #{realname}   , #{contact}   , #{addtime} )
	</insert>

	<!-- 管理员表 更新SQL语句  AdminDAO通过ID(updateAdmin)调用此配置 -->
	<update id="updateAdmin" parameterType="admin">
		update admin set  username=#{username}  , password=#{password}  , realname=#{realname}  , contact=#{contact}  , addtime=#{addtime}  where adminid=#{adminid}
	</update>

	<!-- 管理员表 按主键删除SQL语句  AdminDAO通过ID(deleteAdmin)调用此配置 -->
	<delete id="deleteAdmin" parameterType="String">
		delete from admin where adminid = #{adminid}
	</delete>

	<!-- 管理员表 查询全部管理员信息SQL语句  AdminDAO通过ID(getAllAdmin)调用此配置  -->
	<select id="getAllAdmin" resultMap="adminMap">
		select a.*  from admin a  where 1=1  order by adminid desc
	</select>

	<!-- 管理员表 按主键(adminid)查询SQL语句 AdminDAO通过ID(getAdminById)调用此配置  -->
	<select id="getAdminById" parameterType="String" resultMap="adminMap">
		select a.*  from admin a  where 1=1 and adminid=#{adminid} order by adminid desc
	</select>

	<!-- 管理员表 按条件精确查询SQL语句 AdminDAO通过ID(getAdminByCond)调用此配置  -->
	<select id="getAdminByCond" parameterType="admin" resultMap="adminMap">
		select a.*  from admin a  where 1=1 
		<if test="username != null and '' != username">
			and a.username = #{username}  
		</if>
		<if test="password != null and '' != password">
			and a.password = #{password}  
		</if>
		<if test="realname != null and '' != realname">
			and a.realname = #{realname}  
		</if>
		<if test="contact != null and '' != contact">
			and a.contact = #{contact}  
		</if>
		<if test="addtime != null and '' != addtime">
			and a.addtime = #{addtime}  
		</if>
	</select>

	<!-- 管理员表 按条件模糊查询SQL语句 AdminDAO通过ID(getAdminByLike)调用此配置  -->
	<select id="getAdminByLike" parameterType="admin" resultMap="adminMap">
		select a.*  from admin a  where 1=1 
		<if test="username != null and '' != username">
			and a.username like CONCAT('%', CONCAT(#{username}, '%'))
		</if>
		<if test="password != null and '' != password">
			and a.password like CONCAT('%', CONCAT(#{password}, '%'))
		</if>
		<if test="realname != null and '' != realname">
			and a.realname like CONCAT('%', CONCAT(#{realname}, '%'))
		</if>
		<if test="contact != null and '' != contact">
			and a.contact like CONCAT('%', CONCAT(#{contact}, '%'))
		</if>
		<if test="addtime != null and '' != addtime">
			and a.addtime like CONCAT('%', CONCAT(#{addtime}, '%'))
		</if>
	</select>
</mapper>