class org.apache.hadoop.hdfs.web.HftpFileSystem cannot access its superinterface
异常信息：
Exception in thread "main" java.lang.IllegalAccessError: class org.apache.hadoop.hdfs.web.HftpFileSystem cannot access its superinterface org.apache.hadoop.hdfs.web.TokenAspect$TokenManagementDelegator
完整错误信息如下：
解决：在IDEA导出jar包之前，将依赖包中所有hadoop-hdfs-***.jar包删除