JAVA 跨机器文件复制的二种方法

1.直接用SOCKET实现

 

server端：

package com.taobao.terminator.allen.shellTest;import java.io.DataInputStream;import java.io.DataOutputStream;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.io.PrintStream;import java.net.ServerSocket;import java.net.Socket;public class EcrmFileServerAllen {private final static int port = 18110;private final static int SIZE = 8192;private String basePath = "/home/admin/allen/file";//private String basePath = "d:/test";private void send(){/** * 1.发送FileList * 2.接收FileName * 3.传递stream * 4.接收end，结束传递 */ServerSocket server = null;Socket socket = null;DataInputStream fileIn = null;DataOutputStream out = null;DataInputStream in =null;try {server = new ServerSocket(port);File files = new File(basePath);socket = server.accept();out = new DataOutputStream(socket.getOutputStream());in = new DataInputStream(socket.getInputStream());StringBuilder builder = new StringBuilder();for(String s : files.list()){builder.append(s);builder.append(",");}System.out.println("------------send file------------");out.writeUTF(builder.toString());out.flush();while(true){ System.out.println("------------begin read file------------");String fileName = in.readUTF();System.out.println("read file : " + fileName);if("EOF".equals(fileName)){System.out.println(fileName + "file send over ,thanks");break;}File file = constuctNewFile(files.getAbsolutePath(),fileName);fileIn = new DataInputStream(new FileInputStream(file));System.out.println("the file: " + fileName + "length is " + file.length());out.writeLong(file.length());out.flush();byte[] buffer = new byte[SIZE]; while(true){ int read = 0; if(fileIn != null){ read = fileIn.read(buffer); } if ( read != -1){ out.write(buffer, 0, read); } else { break; } } System.out.println("Write file over: " + fileName); out.flush(); fileIn.close(); fileIn = null;}System.out.println("All is over");} catch (IOException e) {throw new RuntimeException("IO传输异常",e);} finally{try {out.close();socket.close();server.close();} catch (IOException e) {throw new RuntimeException("IO关闭异常",e);}}}private File constuctNewFile(String filePath , String fileName){fileName = filePath + File.separator + fileName;return new File(fileName);}public static void main(String arg[]) {PrintStream myout = null;try {myout = new PrintStream(new FileOutputStream(new File("/home/admin/main.log")));} catch (FileNotFoundException e) {e.printStackTrace();} System.setOut(myout); System.setErr(myout); new EcrmFileServerAllen().send();}} 

client端:

package com.taobao.terminator.allen.shellTest;import java.io.DataInputStream;import java.io.DataOutputStream;import java.io.File;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.io.PrintStream;import java.net.Socket;import java.net.UnknownHostException;public class EcrmFileClientAllen {private final static int port = 18110;private final static int SIZE = 8192;private String basePath = "/home/admin/allen/file";//private String basePath = "c:/test";private DataInputStream in = null;private DataOutputStream out = null;private DataOutputStream fileOut = null;private void receive(String host){System.out.println("***********start**********");try {Socket socket = new Socket(host, port);in = new DataInputStream(socket.getInputStream());out = new DataOutputStream( socket.getOutputStream()) ; String fileNames = in.readUTF(); String[] files = fileNames.split(",");System.out.println("---------Read files------------");try {for (String fileName : files) {System.out.println("the file is :" + fileName);out.writeUTF(fileName);out.flush();long length = in.readLong();System.out.println("the file length is :" + length);int slength = 0;File file = new File(this.basePath + File.separator + fileName);fileOut = new DataOutputStream(new FileOutputStream(file));System.out.println("begin copy :" + file);int read = 0;boolean mark = true;while (mark) {System.out.println("开始读字节流:" + file.getName() + "此时:" + mark);byte[] b = new byte[SIZE];if ((read = in.read(b)) != -1) {System.out.println("读取大小:" + read);fileOut.write(b, 0, read);System.out.println("写文件:" + file.getAbsolutePath());slength += read;System.out.println("length:" + length + ": slength" + slength);if(slength == length){mark = false;System.out.println("文件读完了:" + file.getName());}}}System.out.println("end copy :" + fileName);}out.writeUTF("EOF");out.flush();} finally {System.out.println("执行finally");in.close();out.close();socket.close();}System.out.println("******one file ok*********");} catch (UnknownHostException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}}public static void main(String arg[]) {PrintStream myout = null;try {myout = new PrintStream(new FileOutputStream(new File("/home/admin/main.log")));} catch (FileNotFoundException e) {e.printStackTrace();} System.setOut(myout); System.setErr(myout); new EcrmFileClientAllen().receive("10.232.37.56");}} 

 

2.用ServerSocektChannel实现

server端：

package com.taobao.terminator.allen.shellTest;import java.io.File;import java.io.FileInputStream;import java.io.IOException;import java.net.InetAddress;import java.net.InetSocketAddress;import java.net.UnknownHostException;import java.nio.ByteBuffer;import java.nio.channels.FileChannel;import java.nio.channels.ServerSocketChannel;import java.nio.channels.SocketChannel;public class ChannelFileServerAllen {private final static int SIZE = 1024 * 1024 * 1;private final static String filepath = "d://test";public static void main(String[] args) {ServerSocketChannel serverChannel = null;InetSocketAddress host = null;SocketChannel channel = null;try {serverChannel = ServerSocketChannel.open();host = new InetSocketAddress("localhost", 11100);serverChannel.socket().bind(host);channel = serverChannel.accept();//传输文件名StringBuilder builder = new StringBuilder();File files = new File(filepath);String[] sfile = files.list();for(int i = 0; i < sfile.length; i++){builder.append(sfile[i]);if(i != sfile.length - 1) {builder.append(",");}}byte[] b = builder.toString().getBytes();ByteBuffer buffer = ByteBuffer.wrap(b, 0, b.length);channel.write(buffer);buffer.clear();//接收文件while(true) {//获取传递文件名buffer = ByteBuffer.allocate(SIZE);channel.read(buffer);buffer.clear();byte[] newbyte = buffer.array();String name =new String(newbyte);if (name.startsWith("END")) {break;} else {File newFile = new File(filepath, name);// 传输文件大小buffer.clear();buffer.putLong(newFile.length());buffer.flip();channel.write(buffer);//传输文件ByteBuffer src = ByteBuffer.allocate(SIZE);FileChannel fChannel = new FileInputStream(newFile).getChannel();while ((fChannel.read(src)) != -1 ) {src.flip();channel.write(src);src.clear();}fChannel.close();}}} catch (Exception e) {e.printStackTrace();} finally {if (channel != null) {try {channel.close();} catch (IOException e) {System.err.println(e);}}if (serverChannel != null) {try {serverChannel.close();} catch (IOException e) {System.err.println(e);}}}}public static final String getLocalHostIP() {try {return InetAddress.getLocalHost().getHostAddress();} catch (UnknownHostException e) {throw new RuntimeException("[local-ip] an exception occured when get local ip address", e);}}} 

client端：

package com.taobao.terminator.allen.shellTest;import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.net.InetAddress;import java.net.InetSocketAddress;import java.nio.ByteBuffer;import java.nio.channels.FileChannel;import java.nio.channels.SocketChannel;public class ChannelFileClientAllen {private final static int SIZE = 1024 * 1024 * 1 ;private final static String filePath = "c://test";public static void main(String[] args) {SocketChannel channel = null;try {channel = SocketChannel.open();channel.socket().bind(new InetSocketAddress(InetAddress.getLocalHost() ,0));channel.connect(new InetSocketAddress("localhost" ,11100));ByteBuffer buffer = ByteBuffer.allocate(SIZE);//读取文件名String sfile = null;channel.read(buffer);buffer.clear();byte[] bt = buffer.array();sfile = new String(bt);String[] files = sfile.split(",");//获取文件byte[] sb = null;for(String fileName : files) {File file = new File(filePath , fileName);if (!file.exists()) {file.createNewFile();} else {file.delete();}//传递文件名给server端sb = fileName.getBytes();buffer = ByteBuffer.wrap(sb, 0, sb.length);channel.write(buffer);buffer.clear();FileChannel fChannel = new FileOutputStream(file).getChannel();channel.read(buffer);long fileSize = buffer.getLong(0);long size = 0;int a = 0;while ((a = channel.read(buffer)) != -1) {buffer.flip();fChannel.write(buffer);buffer.clear();size += a;if(size == fileSize) {fChannel.close();break ;}}}sb = "END".getBytes();buffer = ByteBuffer.wrap(sb, 0, sb.length);channel.write(buffer);buffer.clear();} catch (Exception e) {e.printStackTrace();} finally {try {channel.close();} catch (IOException e) {e.printStackTrace();}}}}