dormitory/ssm_xsssglxt/build/classes/mapper/users.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Mabatis映射文件 -->
<mapper namespace="com.dao.UsersDAO">
	<resultMap type="users" id="usersMap">
		<id property="usersid" column="usersid" />
		<result property="username" column="username" />
		<result property="password" column="password" />
		<result property="realname" column="realname" />
		<result property="sex" column="sex" />
		<result property="birthday" column="birthday" />
		<result property="contact" column="contact" />
		<result property="email" column="email" />
		<result property="roomsid" column="roomsid" />
		<result property="status" column="status" />
		<result property="regdate" column="regdate" />
		<result property="roomsname" column="roomsname" />
	</resultMap>
	<!-- 插入语句 DAO通过id调用此配置 -->
	<insert id="insertUsers" parameterType="users">
		insert into users(usersid , username , password , realname , sex , birthday , contact , email ,
		roomsid , status , regdate ) values(#{usersid} ,
		#{username} , #{password} , #{realname} , #{sex} , #{birthday} , #{contact} , #{email} ,
		#{roomsid} , #{status} , #{regdate} )
	</insert>
	<!-- 更新语句 DAO通过id调用此配置 -->
	<update id="updateUsers" parameterType="users">
		update users set username=#{username} , password=#{password} , realname=#{realname} , sex=#{sex}
		, birthday=#{birthday} , contact=#{contact} ,
		email=#{email} , roomsid=#{roomsid} , status=#{status} , regdate=#{regdate} where
		usersid=#{usersid}
	</update>
	<!-- 按主键删除 DAO通过id调用此配置 -->
	<delete id="deleteUsers" parameterType="String">
		delete from users where usersid = #{usersid}
	</delete>
	<!-- 查询全部信息 DAO通过id调用此配置 -->
	<select id="getAllUsers" resultMap="usersMap">
		select a.* , b.roomsname from users a , rooms b where a.roomsid = b.roomsid order by usersid
		desc
	</select>

	<!-- 按主键查询 DAO通过id调用此配置 -->
	<select id="getUsersById" parameterType="String" resultMap="usersMap">
		select a.* , b.roomsname from users a , rooms b where a.roomsid =
		b.roomsid
		and usersid=#{usersid} order by usersid desc
	</select>
	<!-- 按条件精确查询 DAO通过id调用此配置 -->
	<select id="getUsersByCond" parameterType="users" resultMap="usersMap">
		select a.* , b.roomsname from users a , rooms b where a.roomsid = b.roomsid
		<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="sex != null and '' != sex">
			and a.sex = #{sex}
		</if>
		<if test="birthday != null and '' != birthday">
			and a.birthday = #{birthday}
		</if>
		<if test="contact != null and '' != contact">
			and a.contact = #{contact}
		</if>
		<if test="email != null and '' != email">
			and a.email = #{email}
		</if>
		<if test="roomsid != null and '' != roomsid">
			and a.roomsid = #{roomsid}
		</if>
		<if test="status != null and '' != status">
			and a.status = #{status}
		</if>
		<if test="regdate != null and '' != regdate">
			and a.regdate = #{regdate}
		</if>
	</select>
	<!-- 按条件模糊查询 DAO通过id调用此配置 -->
	<select id="getUsersByLike" parameterType="users" resultMap="usersMap">
		select a.* , b.roomsname from users a , rooms b where a.roomsid = b.roomsid
		<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="sex != null and '' != sex">
			and a.sex like CONCAT('%', CONCAT(#{sex}, '%'))
		</if>
		<if test="birthday != null and '' != birthday">
			and a.birthday like CONCAT('%', CONCAT(#{birthday}, '%'))
		</if>
		<if test="contact != null and '' != contact">
			and a.contact like CONCAT('%', CONCAT(#{contact}, '%'))
		</if>
		<if test="email != null and '' != email">
			and a.email like CONCAT('%', CONCAT(#{email}, '%'))
		</if>
		<if test="roomsid != null and '' != roomsid">
			and b.roomsname like CONCAT('%', CONCAT(#{roomsid}, '%'))
		</if>
		<if test="status != null and '' != status">
			and a.status like CONCAT('%', CONCAT(#{status}, '%'))
		</if>
		<if test="regdate != null and '' != regdate">
			and a.regdate like CONCAT('%', CONCAT(#{regdate}, '%'))
		</if>
	</select>
</mapper>