java.lang.ExceptionInInitializerError，Caused by: org.apache.ibatis.exceptions.PersistenceException:

问题：maven由于约定大于配置，可能会遇到我们写的配置文件，无法被导出或者生效的问题(此处的配置文件指的是在java目录下，而不在resource目录下的配置文件)

java.lang.ExceptionInInitializerError
...........
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Caused by: org.apache.ibatis.exceptions.PersistenceException: 
### Error building sqlSession.
### The error may exist in com/simon/dao/UserMapper.xml
### Cause: org.apache.ibatis.builder.BuilderException: 

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解决方法：在maven的pom.xml中加入以下配置

 <!--在build中配置resources，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>