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<?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文件相当于DAO接口的“实现类”， -->
<mapper namespace= "com.example.web.UserDao" >
<insert id= "insert" parameterType= "com.example.web.User1" >
insert into user1(username,password) values(#{username},#{password})
</insert>
<update id= "updateUser" parameterType= "com.example.web.User1" >
update user1 set username=#{username},password=#{password} where userId=#{userId}
</update>
<delete id= "deleteUser" parameterType= "com.example.web.User1" >
delete from user1 where userId=#{userId}
</delete>
<select id= "selectAll" resultType= "com.example.web.User1" >
select * from user1
</select>
<select id= "selectUserById" resultType= "com.example.web.User1" >
select*from user1 where userId=#{userId}
</select>
</mapper>
