大数据学习：eclipse客户机和hadoop集群通信，增删查改等基本操作

package hdfs;

import java.io.FileNotFoundException;
import java.io.IOException;
import java.net.URI;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.junit.Before;
import org.junit.Test;

public class mycode {

	public static void main(String[] args) throws Exception {
	
		Configuration conf=new   Configuration();
		conf.set("fs.replication","2");
		conf.set("fs.blocksize", "64m");
		FileSystem  fs=FileSystem.get(new URI("hdfs://192.168.33.11:9000/"), conf, "root");
	    fs.copyFromLocalFile(new Path("E:/download/yyy.txt"),new Path("/"));
	    
	    fs.close();
	}
	FileSystem fs = null;
	@Before
	public void init() throws Exception{
		Configuration conf = new Configuration();
		conf.set("dfs.replication", "2");
		conf.set("dfs.blocksize", "64m");	
		fs= FileSystem.get(new URI("hdfs://192.168.33.11:9000/"), conf, "root");
	   
	}
	@Test
	public  void  TestGet() throws IllegalArgumentException, IOException{
		fs.copyToLocalFile(new  Path("/b.log"), new  Path("E:/download/hello"));
		fs.close();
		
	}
	@Test
	public void  TestRename() throws IOException{
		fs.rename(new  Path("/yyy.txt"),new  Path("/xx/gg.blog"));
		fs.close();
	}
	@Test
	public  void TestDlete() throws IllegalArgumentException, IOException{
		fs.delete(new  Path("/user/a.txt"), true);
		fs.close();
	}
	@Test
	public void TestMkdir() throws Exception{
		
		fs.mkdirs(new Path("/xx/yy/zz"));
		
		fs.close();
	}
	@Test
	public void RequstDocument() throws FileNotFoundException, IllegalArgumentException, IOException{
		FileStatus[] documents = fs.listStatus(new  Path("/"));
		System.out.println("我在这里");
		for(FileStatus status:documents){
			System.out.println("文件全路径："+status.getPath());
			System.out.println(status.isDirectory()?"这是文件夹":"这是文件");
			System.out.println("块大小："+status.getBlockSize());
			System.out.println("文件长度："+status.getLen());
			System.out.println("副本数量："+status.getReplication());
			System.out.println("--------------------------------");
		}
		
	}
	

}