Java TCP服务端向客户端发送图片

 /**
  * 1、创建TCP服务端，TCP客户端
  * 2、服务端等待客户端连接，客户端连接后，服务端向客户端写入图片
  * 3、客户端收到后进行文件保存
  * @author Administrator
  *
  */
 public class ServerTcpListener implements Runnable{

     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");
                             send(socket);
                         } catch (Exception e) {
                         }
                     }
                 }
             });

             th.run(); //启动线程运行
         } catch (Exception e) {
             e.printStackTrace();
         }
     }

     @Override
     public void run() {

     }

     public static void send(Socket socket) {
         byte[] inputByte = null;
         int length = 0;
         DataOutputStream dos = null;
         FileInputStream fis = null;
         try {
             try {
                 File file = new File("D:/1.png");
                 fis = new FileInputStream(file);
                 dos = new DataOutputStream(socket.getOutputStream());

                 inputByte = new byte[1024];
                 while ((length = fis.read(inputByte, 0, inputByte.length)) > 0) {
                     dos.write(inputByte, 0, length);
                     dos.flush();
                 }

             } finally {
                 if (fis != null)
                     fis.close();
                 if (dos != null)
                     dos.close();
                 if (socket != null)
                     socket.close();
             }
         } catch (Exception e) {
         }
     }
 }

ServerTcpListener.java

 public class ClientTcpReceive {

     public static void main(String[] args) {

             int length = 0;
             byte[] receiveBytes = null;
             Socket socket = null;
             DataInputStream dis = null;
             FileOutputStream fos = null;

             try {
                 try {
                     socket = new Socket("127.0.0.1", 33456);

                     dis = new DataInputStream(socket.getInputStream());
                     fos = new FileOutputStream(new File("1.png"));

                     receiveBytes = new byte[1024];
                     System.out.println("开始接收数据...");
                     while ((length = dis.read(receiveBytes, 0, receiveBytes.length)) > 0) {
                         System.out.println(length);
                         fos.write(receiveBytes, 0, length);
                         fos.flush();
                     }
                     System.out.println("完成接收");
                 } finally {
                     if (dis != null)
                         dis.close();
                     if (fos != null)
                         fos.close();
                     if (socket != null)
                         socket.close();
                 }
             } catch (Exception e) {
                 e.printStackTrace();
             }
     }

 }

ClientTcpReceive.java