JAVA 跨机器文件复制的二种方法

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();        }    }