我應該使用哪一個流傳輸自定義文件（如jpeg或mp3）通過java中的網絡？

我試圖在java中編寫一個服務器和一個客戶端來傳輸文件。但收到的文件很奇怪，看起來像是填充了奇怪的字節，它不會用任何應用程序打開，但它的大小與源文件完全相同。我不知道問題出在哪裏！是關於編碼嗎？我應該使用哪一個流傳輸自定義文件（如jpeg或mp3）通過java中的網絡？

服務器端：

import java.net.*; 
import java.io.*; 


public class MyServer { 


public static void main(String[] args) { 
    char sp = File.separatorChar; 
    String home = System.getProperty("user.home"); 
    try { 
     ServerSocket server = new ServerSocket(5776); 
     while (true){ 
      Socket connection = server.accept(); 
      try { 
       String FileName=home+sp+"33.jpg"; 
       File inputFile = new File(FileName); 
       FileInputStream Fin = new FileInputStream(inputFile); 
       long fileLength = inputFile.length(); 
       byte[] bt= new byte[(int) fileLength]; 
       DataOutputStream Oout = new DataOutputStream(connection.getOutputStream()); 
       Oout.writeLong(fileLength); 
       Oout.write(bt); 
       Oout.flush(); 
       Oout.close(); 
       connection.close(); 
      } catch (IOException ex) {} 
      finally { 
       try { 
        if(connection!= null) connection.close(); 
       } catch (IOException e) {} 
      } 
     } 
    } catch (IOException e) { 

     System.err.println("There is a server on port 5776"); 
    } 

} 

}

客戶端：

import java.net.*; 
import java.io.*; 

public class Client { 


public static void main(String[] args) { 
    byte[] IP={(byte)192,(byte)168,1,7}; 
    char sp = File.separatorChar; 
    String home = System.getProperty("user.home"); 
    String SharingPathString = home+sp+"File Sharing"; 
    String FileName = SharingPathString+sp+"file.jpg"; 
    try { 
     InetAddress add = InetAddress.getByAddress(IP); 
     Socket theSocket= new Socket("Shayan-8",5776); 
     DataInputStream in= new DataInputStream(theSocket.getInputStream()); 
     final long FileLength = in.readLong(); 
     System.out.println("FileLength: "+FileLength); 
     File SharingPath = new File(SharingPathString); 
     if(!SharingPath.exists()) 
      SharingPath.mkdir(); 
     File outputFile = new File(FileName); 
     if(outputFile.exists()) 
      outputFile.delete(); 
     //outputFile.createNewFile(); 
     FileOutputStream Fos = new FileOutputStream(FileName); 
     DataOutputStream dos = new DataOutputStream(Fos); 
     byte[] buffer = new byte[100]; 
     int count=0; 
     long current=0; 
     while(current < FileLength && (count=in.read(buffer,0,(int)Math.min(FileLength-current, buffer.length)))!=-1) 
      {Fos.write(buffer, 0, count); 
       current+=count; 
       } 
//  while((count=in.read())!=-1) 
//   dos.write(count); 
     dos.close(); 
     Fos.close(); 
    } catch (UnknownHostException uhe) { 
     System.err.println(uhe); 
    } catch (IOException e) { 
     System.err.println(e); 
     } 


} 

}

來源

2013-03-23 Shayan_Aryan