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代碼片段和文件信息 

package?com.util;

import?java.io.BufferedInputStream;
import?java.io.FileInputStream;
import?java.io.FileNotFoundException;
import?java.io.FileOutputStream;
import?java.io.IOException;
import?java.io.InputStream;
import?java.io.OutputStream;
import?java.net.URI;

import?org.apache.hadoop.conf.Configuration;
import?org.apache.hadoop.fs.FSDataInputStream;
import?org.apache.hadoop.fs.FSDataOutputStream;
import?org.apache.hadoop.fs.FileStatus;
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?HdsfAPI?{

	/**?上傳文件到HDFS上去?*/

	private?static?void?uploadToHdfs（）{
		String?localSrc?=?“/usr/test/image/1.jpg“;
		String?dst?=?“hdfs://localhost:9000/input/image/1.jpg“;
		try?{
			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）;
		}?catch?（FileNotFoundException?e）?{
			e.printStackTrace（）;
		}?catch?（IOException?e）?{
			e.printStackTrace（）;
		}
	}

	/**?從HDFS上讀取文件到本地*/
	private?static?void?readFromHdfs（）?throws?FileNotFoundException
			IOException?{
		String?dst?=?“hdfs://localhost:9000/input/image/1.jpg“;
		Configuration?conf?=?new?Configuration（）;
		FileSystem?fs?=?FileSystem.get（URI.create（dst）?conf）;
		FSDataInputStream?hdfsInStream?=?fs.open（new?Path（dst））;
		OutputStream?out?=?new?FileOutputStream（“/usr/test/image/1.jpg“）;
		byte[]?ioBuffer?=?new?byte[1024];
		int?readLen?=?hdfsInStream.read（ioBuffer）;
		while?（-1?!=?readLen）?{
			out.write（ioBuffer?0?readLen）;
			readLen?=?hdfsInStream.read（ioBuffer）;
		}
		out.close（）;
		hdfsInStream.close（）;
		fs.close（）;
	}

	

	/*private?static?void?appendToHdfs（）?throws?FileNotFoundException
			IOException?{
		String?dst?=?“hdfs://localhost:9000/input/uploadToHdfs.txt“;
		Configuration?conf?=?new?Configuration（）;
		FileSystem?fs?=?FileSystem.get（URI.create（dst）?conf）;
		FSDataOutputStream?out?=?fs.append（new?Path（dst））;
		int?readLen?=?“huangyicong?append?this?file?!“.getBytes（）.length;
		while?（-1?!=?readLen）?{
			out.write（“huangyicong?append?this?file?!“.getBytes（）?0?readLen）;
		}
		out.close（）;
		fs.close（）;
	}*/

	/**?從HDFS上刪除文件?*/
	private?static?void?deleteFromHdfs（）?throws?FileNotFoundException
			IOException?{
		String?dst?=?“hdfs://localhost:9000/user/root“;
		Configuration?conf?=?new?Configuration（）;
		FileSystem?fs?=?FileSystem.get（URI.create（dst）?conf）;
		fs.deleteOnExit（new?Path（dst））;
		fs.close（）;
	}

	/**?遍歷HDFS上的文件和目錄?*/
	private?static?void?getDirectoryFromHdfs（）?throws?FileNotFoundException
			IOException?{
		String?dst?=?“hdfs://localhost:9000/input/image“;
		Configuration?conf?=?new?Configuration（）;
		FileSystem?fs?=?FileSystem.get（URI.create（dst）?conf）;
		File

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2015-05-09?21:25??HbaseVideo\
?????文件????????1075??2015-05-06?12:52??HbaseVideo\.classpath
?????文件????????1007??2015-05-06?12:10??HbaseVideo\.project
?????目錄???????????0??2015-05-09?21:19??HbaseVideo\.settings\
?????文件?????????491??2015-05-06?12:10??HbaseVideo\.settings\.jsdtscope
?????文件?????????357??2015-05-06?12:10??HbaseVideo\.settings\org.eclipse.jdt.core.prefs
?????文件?????????475??2015-05-06?12:10??HbaseVideo\.settings\org.eclipse.wst.common.component
?????文件?????????335??2015-05-06?12:10??HbaseVideo\.settings\org.eclipse.wst.common.project.facet.core.xml
?????文件??????????49??2015-05-06?12:10??HbaseVideo\.settings\org.eclipse.wst.jsdt.ui.superType.container
?????文件???????????6??2015-05-06?12:10??HbaseVideo\.settings\org.eclipse.wst.jsdt.ui.superType.name
?????文件?????????498??2015-05-09?21:38??HbaseVideo\README.txt
?????目錄???????????0??2015-05-09?21:19??HbaseVideo\src\
?????目錄???????????0??2015-05-09?21:19??HbaseVideo\src\com\
?????目錄???????????0??2015-05-09?21:19??HbaseVideo\src\com\util\
?????目錄???????????0??2015-05-09?21:19??HbaseVideo\src\com\util\analyseWords\
?????文件????????1067??2015-05-07?01:50??HbaseVideo\src\com\util\analyseWords\AnalyseWords.java
?????目錄???????????0??2015-05-09?21:19??HbaseVideo\src\com\util\commonUtil\
?????文件????????2098??2015-05-08?19:07??HbaseVideo\src\com\util\commonUtil\CommonUtil.java
?????目錄???????????0??2015-05-09?21:19??HbaseVideo\src\com\util\ffmpegUtil\
?????文件????????1813??2015-05-04?23:59??HbaseVideo\src\com\util\ffmpegUtil\FfmpegUtil.java
?????目錄???????????0??2015-05-09?21:19??HbaseVideo\src\com\util\HbaseUtil\
?????文件????????2532??2015-05-05?20:07??HbaseVideo\src\com\util\HbaseUtil\HbaseUtil.java
?????文件????????3620??2015-05-06?13:09??HbaseVideo\src\com\util\HdsfAPI.java
?????目錄???????????0??2015-05-09?21:19??HbaseVideo\src\com\util\similarityUtil\
?????文件????????1647??2012-08-05?15:09??HbaseVideo\src\com\util\similarityUtil\SimilarityUtil.java
?????文件????????4163??2015-05-08?18:40??HbaseVideo\src\com\util\TestHbase.java
?????目錄???????????0??2015-05-09?21:19??HbaseVideo\src\com\util\videoUtil\
?????文件????????3406??2015-05-09?01:06??HbaseVideo\src\com\util\videoUtil\VideoUtil.java
?????文件?????????414??2012-02-14?11:21??HbaseVideo\src\IKAnalyzer.cfg.xml
?????文件?????????241??2015-05-08?20:59??HbaseVideo\src\ipConfig.properties
?????文件?????????161??2011-04-15?16:39??HbaseVideo\src\stopword.dic
............此處省略102個文件信息

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