hadoop下的存储在hdfs中的视频文件怎么播放？

Question

hadoop下的存储在hdfs中的视频文件怎么播放？可以直接拿到视频文件的http路径吗，我现在想实现的是像百度云这样的可以在线播放，但是不知道怎么得到文件的路径，而hdfs提供的API只有上传下载文件这些，对于这样的问题要怎么解决呢？？

Answer 1

你需要用HDFS API来获取

 package org.myorg.hdfsdemo;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

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



public class HdfsDemo {

    public static void main(String[] args) throws IOException {

        Configuration conf = new Configuration();
        conf.addResource(new Path("/Users/miqbal1/hadoop-eco/hadoop-1.1.2/conf/core-site.xml"));
        conf.addResource(new Path("/Users/miqbal1/hadoop-eco/hadoop-1.1.2/conf/hdfs-site.xml"));
        FileSystem fs = FileSystem.get(conf);
        System.out.println("Enter the directory name :");
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        Path path = new Path(br.readLine());
        displayDirectoryContents(fs, path);
    }

    private static void displayDirectoryContents(FileSystem fs, Path rootDir) {
        // TODO Auto-generated method stub
        try {

            FileStatus[] status = fs.listStatus(rootDir);
            for (FileStatus file : status) {
                if (file.isDir()) {
                    System.out.println("This is a directory:" + file.getPath());
                    displayDirectoryContents(fs, file.getPath());
                } else {
                    System.out.println("This is a file:" + file.getPath());
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}