Java C++ Socket 的问题

Java C++ Socket 的问题
悬赏分：25 - 提问时间2009-9-27 16:39
我想用C++作为服务器端，java作为客户端用Socket进行互联传输文件。虽然功能是实现了，但不知道为什么速度非常慢（传输一张800K的图片要2分钟O__O"…），请教大家有没有什么方法能加快一点速度的呢？
这是我的主要代码：

C++：

void Server::recvFile()
{
ofstream outs("C://tempC.bmp", ios::out | ios::binary);

while (true)
{
char buffer[50000];
char aWord;
char bWord[100];
int i;
bool eofile = false;

for (i=0; i<50000; i++)
{
  recv(sockConn, &aWord, 1, 0);
  if (aWord == '\n')
   break;
  buffer[i] = aWord;
  if (aWord == 'e')
  {
   eofile = true;
   break;
  }
}

if (!eofile)
{
  char aTemp[5];
  for (int m=0; m<5; m++)
   aTemp[m] = 0;
  int count = 0;
  int tempInt;
  for (int j=0; j<i; j++)
  {
   if (buffer[j] == ' ')
   {
    stringstream ss(aTemp);
       ss >> tempInt;
    count = 0;
    for (m=0; m<10; m++)
     aTemp[m] = 0;

    BYTE tempByte = (BYTE)tempInt;
    outs.write((char*)&tempByte, sizeof(BYTE));
   }
   else
   {
    aTemp[count] = buffer[j];
    count++;
   }
  }
}
else
  break;
}
}



Java:

InputStream in = null;
        OutputStream out = null;
        DataOutputStream writeToSocket = null;
        DataInputStream readFromSocket = null;
       
        try {
            Socket socket = new Socket("localhost", 2000);
            writeToSocket = new DataOutputStream(socket.getOutputStream());
            readFromSocket = new DataInputStream(socket.getInputStream());
        } catch (UnknownHostException ex) {
            Logger.getLogger(MyView.class.getName()).log(Level.SEVERE, null, ex);
        } catch (IOException ex) {
            Logger.getLogger(MyView.class.getName()).log(Level.SEVERE, null, ex);
        }
        System.out.println("Connection successful!\n");
       
        try {
            System.out.println("以字节为单位读取文件内容，一次读多个字节：");
            byte[] tempbytes = new byte[10000];
            int byteread = 0;
            in = new FileInputStream("C://temp.bmp");
            out = new FileOutputStream("C://temp1.bmp");
           
            while ((byteread = in.read(tempbytes)) != -1)
            {
                String aString = "";
                StringBuilder sb = new StringBuilder(aString);
                for (byte element : tempbytes) {
                    sb.append(String.valueOf(element));
                    sb.append(" ");
                }
                if (byteread == -1)
                    sb.append("e");
                else
                    sb.append("\n");

                aString=sb.toString();

//               System.out.println(aString.length());
                out.write(tempbytes);
//               System.out.println(aString);
                writeToSocket.writeBytes(aString);
               
            }

请大家指教!!