Maven异常

HTTP Status 500 – Internal Server Error
java.lang.reflect.InvocationTargetException
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    java.lang.reflect.Method.invoke(Method.java:498)
    ...

org.apache.ibatis.exceptions.PersistenceException: 
### Error building SqlSession.
### The error may exist in com/baizhi/dao/DeptDaoMapper.xml
### Cause: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: java.io.IOException: Could not find resource com/baizhi/dao/DeptDaoMapper.xml
    at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:26)
    at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:82)
    at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:66)
    at com.baizhi.util.MybatisUtil.<clinit>(MybatisUtil.java:20)
    at com.baizhi.service.UserServiceImp.login(UserServiceImp.java:13)
    at com.baizhi.action.UserAction.login(UserAction.java:67)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    ...

原因：注册 mapper 的路径并没有问题，却一直显示找不到 mapper 文件，猜测是 build 的时候没有将 mapper.xml 编译进去。
应该是maven规定mapper.xml一类的文件只能放在src/main/resources文件夹下，否则读取不到。

解决办法1：将mapper.xml文件都放在src/main/resources文件夹中，具体操作：

1、在src/main/resouces目录下创建com/xxx/mapper文件夹
2、将所有mapper文件放在该文件夹下
3、在mybaits-config.xml中正常注册mapper文件

解决办法2：若不想新建mapper文件夹，则在 pom.xml 的 build 中添加以下代码：

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