检查mapper是否正确映射配置文件

<mappers>
    <mapper resource="com\demo\mapper\userMapper.xml"/>
    <!--使用class映射必须接口名和配置文件名一致，必须在同一个包下
    <mapper class="com.demo.dao.UserDaoInterface"/>
    使用package映射必须接口名和配置文件名一致，必须在同一个包下
    <package name="com.demo.dao" />-->
</mappers>

检查target，文件资源是否被导出

 没有导出的话在maven配置文件里面配置build，防止资源导出失败的问题-

<build>
    <resources>
        <resource>
            <directory>src/main/resources</directory>
            <includes>
                <include>**/*.properties</include>
                <include>**/*.xml</include>
            </includes>
            <filtering>true</filtering>
        </resource>
        <resource>
            <directory>src/main/java</directory>
            <includes>
                <include>**/*.properties</include>
                <include>**/*.xml</include>
            </includes>
            <filtering>true</filtering>
        </resource>
    </resources>
</build>

maven项目中使用mybatis出现【Error building SqlSession；Error parsing SQL Mapper Configuration】