解决Java程序读写HDFS文件的错误：No FileSyste

https://www.codelast.com/%E5%8E%9F%E5%88%9B-%E8%A7%A3%E5%86%B3%E8%AF%BB%E5%86%99hdfs%E6%96%87%E4%BB%B6%E7%9A%84%E9%94%99%E8%AF%AF%EF%BC%9Ano-filesystem-for-scheme-hdfs/

需要的依赖如下：

   org.apache.hadoop      hadoop-client           

   org.apache.hadoop      hadoop-common           

   org.apache.hadoop      hadoop-hdfs