记住这个错误org.apache.ibatis.binding.BindingException: Type interface com.kuang.dao.UserDAO is not known to the MapperRegistry.

错误：

org.apache.ibatis.binding.BindingException: Type interface com.kuang.dao.UserDAO is not known to the MapperRegistry.

错误：

java.lang.ExceptionInInitializerError

原因1：没有添加mappers

原因2：手动添加

<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>