如果在SSM整合的时候出现以下的错误：

留意一下是不是既在Mybatis配置文件中加载了映射文件，又在Spring配置文件中使用扫描式去加载映射文件了。两者是不能够重合使用的！

Caused by: org.springframework.core.NestedIOException:

 Failed to parse mapping resource: 'file [C:\SSM\out\production\SSM\zhongfucheng\dao\DeptMapper.xml]'; 

nested exception is java.lang.RuntimeException: Error parsing Mapper XML. 

Cause: java.lang.IllegalArgumentException: Result Maps collection already contains value for zhongfucheng.entity.DeptMapper.deptResultMap