通过javaAPI上传文件到HDFS文件系统

Posted 2020-09-03

import java.io.BufferedInputStream;

import java.io.FileInputStream;

import java.io.InputStream;

import java.io.OutputStream;

import java.net.URI;

import org.apache.hadoop.conf.Configuration;

import org.apache.hadoop.fs.FileSystem;

import org.apache.hadoop.fs.Path;

import org.apache.hadoop.io.IOUtils;

import org.apache.hadoop.util.Progressable;

public class UploadFile {

public static void main(String[] args) {

try {

String localSrc = "E://Temp/117227.jpg";

String dst = "hdfs://ip:8020/tmp/hadoop-xiaohu/117227.jpg";

InputStream in = new BufferedInputStream(new FileInputStream(localSrc));

Configuration conf = new Configuration();

FileSystem fs = FileSystem.get(URI.create(dst), conf);

OutputStream out = fs.create(new Path(dst), new Progressable() {

public void progress() {

System.out.print(".");

}

});

IOUtils.copyBytes(in, out, 4096, true);

System.out.println("success");

} catch (Exception e) {

e.printStackTrace();

}

}

}

上传成功后通过浏览器打开50070查看,选择

Browse Directory

文件列表就显示出来了

本文出自 “学神Linux--星月情缘” 博客，请务必保留此出处http://xuegodxingyue.blog.51cto.com/5989753/1904018