ssm+maven 出现找不到mapper的异常

<!-- 如果不添加此节点mybatis的mapper.xml文件都会被漏掉 -->
  <build>
  <resources>
  <resource>
  <directory>src/main/java</directory>
  <includes>
  <include>**/*.properties</include>
  <include>**/*.xml</include>
  </includes>
  <filtering>false</filtering>
  </resource>
  </resources>

  </build>

service层调mapper内部方法时会出现找不到mapper的异常。