DataServer(服務器端上傳文件到客戶端)

import java.io.File;
import java.io.FileInputStream;
import java.io.OutputStream;
import java.io.PrintStream;
import java.net.ServerSocket;
import java.net.Socket;

public class DataServer {

        public static final int SERVICE_PORT=1500;
        public static final int DATA_SIZE=1024;
        public static void main(String[] args) {
                // TODO Auto-generated method stub
                String filePath="C:"+File.separator+"MP4"+File.separator+"電話號碼_Tel.xls";
                File fileOut=new File(filePath);
                if(!fileOut.exists()){
                        System.out.println("File Not Found");
                        return;
                }
                
                try{
                        ServerSocket server = new ServerSocket(SERVICE_PORT);
                        System.out.println("Service started");
                        
                        for(;;){
                                Socket nextClient = server.accept();
                                System.out.println("Received request from " + nextClient.getInetAddress()+ ":"+ nextClient.getPort());
                                
                                
                                FileInputStream fis=new FileInputStream(fileOut);
                                OutputStream out =nextClient.getOutputStream();
                                PrintStream fileOutS = new PrintStream(out);
                                fileOutS.print(filePath+"\r\n");
                                
                                byte[] bs = new byte[DATA_SIZE];
                                int length;
                                System.out.println("Sending data...");
                    while ( (length=fis.read(bs)) != -1){
                            out.write(bs,0,length);
                            bs = new byte[DATA_SIZE];
                            Thread.sleep(500);
                    }
                    System.out.println("Data sending completed");
                    fileOutS.close();
                                fis.close();
                                out.flush();
                                out.close();
                                nextClient.close();
                                
                        }
                        
                }catch(Exception e){
                        e.printStackTrace();
                } 
                
        }

}