使用HDFS的JavaApi,实现文件的新建上传和下载

 1 package com.xujunqi.month2a;
 2 
 3 import org.apache.hadoop.conf.Configuration;
 4 import org.apache.hadoop.fs.FileSystem;
 5 import org.apache.hadoop.fs.Path;
 6 
 7 import java.io.IOException;
 8 import java.net.URI;
 9 import java.net.URISyntaxException;
10 import java.net.URL;
11 
12 // <property>
13 // <name>fs.defaultFS</name>
14 //    <value>hdfs://xujunqi001:9000</value>
15 // </property>
16 public class JavaApiHdfs {
17 
18     public static void main(String[] args) throws IOException, URISyntaxException, InterruptedException {
19 
20         Configuration configuration = new Configuration();
21 
22         configuration.set("fs.defaultFS","hdfs://192.168.107.128:9000");
23 
24         FileSystem fileSystem = FileSystem.get(new URI("hdfs://192.168.107.128:9000"),configuration,"root");
25         fileSystem.copyFromLocalFile(new Path("C:\\Users\\Dell\\Desktop\\项目\\月考练习\\month2a\\hivefile.txt"),new Path("/yuekao/source"));
26 
27         //上传到sourse
28        // fileSystem.copyFromLocalFile(new Path(""),dst:"");
29 
30          fileSystem.close();
31 
32     }
33 }