hadoop实践02---eclipse操作hdfs的api上传文件

Posted 2020-11-28 zhengwei_cq

1、eclipse中编写代码后双击main方法--->Run as ---> java application ,然后指定的文件 就会提交到hdfs中。

2、查看文件：http://192.168.108.128:50070/dfshealth.html#tab-overview

package hdfs24;


import java.net.URI;
import java.net.URISyntaxException;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;

public class hdfsClientDemo {
       public static void main(String[] args) throws Exception
       {
           Configuration conf = new Configuration();
           //复本数
           conf.set("dfs.replication", "1");
           conf.set("dfs.blocksize", "1024m");
           FileSystem fs = FileSystem.get(new URI("hdfs://192.168.108.128:9000"), conf, "root");
           fs.copyFromLocalFile(new Path("D:/postman-4.1.2.rar"), new Path("/aaa/"));
           fs.close();
       }
}