问如何在Java的套接字上传输文件信息和多个文件？

EN

dis = new DataInputStream(clientSocket.getInputStream());
callInfo = dis.readUTF();
callInfos = callInfo.split(" ");

FileOutputStream fos = new FileOutputStream(File1);
byte[] buffer = new byte[clientSocket.getReceiveBufferSize()];
int bytesReceived = 0;
while ((bytesReceived = dis.read(buffer)) > 0)
    fos.write(buffer, 0, bytesReceived);
fos.flush();
fos.close();

fos = new FileOutputStream(File2);
while ((bytesReceived = dis.read(buffer)) > 0)
    fos.write(buffer, 0, bytesReceived);
fos.flush();
fos.close();

String fileIno = "fileIno";
byte[] buffer = new byte[socket.getSendBufferSize()];
int bytesRead = 0;
DataOutputStream dos = new DataOutputStream(socket.getOutputStream());
dos.writeUTF(fileInfo);

FileInputStream file = new FileInputStream(File1);
while ((bytesRead = file.read(buffer)) > 0)
    dos.write(buffer, 0, bytesRead);
dos.flush();
file.close();

file = new FileInputStream(File2);
while ((bytesRead = file.read(buffer)) > 0)
    dos.write(buffer, 0, bytesRead);
dos.flush();
file.close();