Maven项目中src/main/java目录下的xml文件没有被编译

修改pom文件：

  <build>
    ...
    <resources>
      <!--编译src/main/java目录下的xml文件-->
      <resource>
        <directory>src/main/java</directory>
        <includes>
          <include>**/*.xml</include>
        </includes>
        <filtering>true</filtering>
      </resource>
    </resources>
    ...
  </build>