Mybatis环境的xml配置文件的注意事项

<configuration>

<!-- 类别名定义 -->

<typeAliases>

<typeAlias alias="user" type="com.user.User"/>

</typeAliases>

<!-- 配置Mybatis的环境，事务及数据源等等 -->

<environments default="development">

<environment id="development">

<transactionManager type="JDBC" />

<dataSource type="POOLED">

<property name="driver" value="com.mysql.jdbc.Driver" />

<property name="url" value="jdbc:mysql://127.0.0.1:3306/mybatis" />

<property name="username" value="root" />

<property name="password" value="root" />

</dataSource>

</environment>

</environments>

<!-- 指定映射文件或者映射类 -->

<mappers>

<mapper resource="com/user/user.xml" />

</mappers>

</configuration>

===========================================================================================

映射文件（com/user/user.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="user">

<resultMap type="user" id="userResult">

<result property="userId" column="user_id" jdbcType="INTEGER"

javaType="int" />

<result property="userName" column="user_name" />

<result property="userAccount" column="user_account" />

<result property="userPassword" column="user_password" />

<result property="userPicture" column="user_picture" />

<result property="userStatus" column="user_status" />

<result property="userEmail" column="user_email" />

<result property="userPhone" column="user_phone" />

<result property="dpId" column="depart_id" />

<result property="dpName" column="depart_name" />

<result property="user_role_id" column="user_role_id" />

<result property="user_sex" column="user_sex" />

</resultMap>

<select id="findUserById" parameterType="user" resultMap="userResult">

SELECT * FROM tb_user where depart_id IS NULL

AND user_status=0

<if test="userId!=null and userId!=0">

AND user_id=#{userId}

</if>

</select>

</mapper>