mybatis出现Type interface com.louis.dao.xxxMapper is not known to the MapperRegistry.

原因是资源文件没有读取到，在生成的target中没有对应的文件，解决办法：

1、在pom.xml文件中project中添加如下内容：

<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>

2、将mybatis-config.xml文件中mapper标签中的resource更改为class:

<mappers>
        <mapper class="com.louis.dao.CoordinatorMapper"/>
        <mapper class="com.louis.dao.WorkerMapper"/>
</mappers>