FileDetail

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import org.apache.hadoop.conf.*;
import org.apache.hadoop.fs.*;

import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.sql.Date;
import java.text.SimpleDateFormat;
/***
 * 查看HDFS上的/user/hadoop/file.txt文件的屬性信息
 * @author 
 *
 */
public class FileDetail {

    public static void main(String[] args) throws URISyntaxException, IOException, InterruptedException {
        Configuration conf=new Configuration();
           URI uri=new URI("hdfs://192.168.1.100:9000");
           FileSystem fs=FileSystem.get(uri,conf,"hadoop");
           //locate file 文件位置
           Path fpath=new Path("/user/hadoop/file.txt");
           FileStatus filestatus=fs.getFileLinkStatus(fpath);
           //get block size 獲取文件塊大小
           long blocksize=filestatus.getBlockSize();
           System.out.println("blocksize:"+blocksize);
           //get file size 獲取文件大小
           long filesize=filestatus.getLen();
           System.out.println("filesize:"+filesize);
           //get file owner 獲取文件所屬者
           String fileowner=filestatus.getOwner();
           System.out.println("fileowner:"+fileowner);
           //get file access time 獲取文件存取時間
           SimpleDateFormat formatter=new SimpleDateFormat("yyyy-mm-dd hh:mm:ss");
           long accessTime=filestatus.getAccessTime();
           System.out.println("access time:"+formatter.format(new Date(accessTime)));
           //get file modify time 獲取文件修改時間
           long modifyTime=filestatus.getModificationTime();
           System.out.println("modify time:"+formatter.format(new Date(modifyTime)));

    }

}