socket 问题

我遍历了一下文件夹  然后为什么只发送了一个
package baozha;import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.net.InetSocketAddress;
import java.net.Socket;public class ClientTcpSend {    public static void main(String[] args) {
        int length = 0;
        byte[] sendByte = null;
        Socket socket = null;
        DataOutputStream dout = null;
        FileInputStream fin = null;
        try {
          try {
            File file = new File("K:\\a");
            File[] files = file.listFiles();
            for(int i=0; i<files.length; i++){
               socket = new Socket();
                  socket.connect(new InetSocketAddress("127.0.0.1", 33456),1000 * 1000);
                  dout = new DataOutputStream(socket.getOutputStream());
             System.out.println(files[i].getName());
             System.out.println(files.length);
              fin = new FileInputStream(files[i]);
              System.out.println(fin);
                 sendByte = new byte[1024];
                 dout.writeUTF(files[i].getName());
                 while((length = fin.read(sendByte, 0, sendByte.length))>0){
                      dout.write(sendByte,0,length);
                     dout.flush();
                 }
            }          
            } catch (Exception e) {            } finally{
                if (dout != null)
                    dout.close();
                if (fin != null)
                    fin.close();
              /*  if (socket != null)
                    socket.close();*/
        }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }}服务端
package baozha;import java.io.DataInputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;public class ServerTcpListener implements Runnable {    public void run() {    }    public static void main(String[] args) {
        try {
            final ServerSocket server = new ServerSocket(33456);
            Thread th = new Thread(new Runnable() {                public void run() {
                    while (true) {
                        try {
                           System.out.println("开始监听");
                           Socket socket = server.accept();
                           System.out.println("有链接");
                           receiveFile(socket);
                        } catch (Exception e) {
                            e.printStackTrace();
                        }
                    }                }            });
            th.run();
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }    public static void receiveFile(Socket socket) throws IOException {
        byte[] inputByte = null;
        int length = 0;
        DataInputStream din = null;
        FileOutputStream fout = null;
        try {
           
            while (true) {
              din = new DataInputStream(socket.getInputStream());
                 
                 fout = new FileOutputStream(new File("K:\\aa\\"+din.readUTF()));
                 inputByte = new byte[1024];
                 System.out.println("开始接收数据...");
                if (din != null) {
                    length = din.read(inputByte, 0, inputByte.length);
                }
                if (length == -1) {
                    break;
                }
             //   System.out.println(length);
                fout.write(inputByte, 0, length);
                fout.flush();
            }
            System.out.println("完成接收");
        } catch (Exception ex) {
            ex.printStackTrace();
        } finally {
            if (fout != null)
                fout.close();
            if (din != null)
                din.close();
         /*   if (socket != null)
                socket.close();*/
        }
    }}