Android 利用java socket实现文件传输、上传

java中的网络信息传输方式基于TCP协议和UD协议P的,socket是基于TCP协议的实现代码如下：

       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[] sendBytes = null;

                Socket socket = null;

                DataOutputStream dos = null;

                FileInputStream fis = null;

                try {
                    try {
                        socket = new Socket();

                        socket.connect(new InetSocketAddress("127.0.0.1", 33456),

                                dos = new DataOutputStream(socket.getOutputStream());

                        File file = new File("/root/6674541037_c3a9c8b64c_b.jpg");

                        Ffis = new FileInputStream(file);

                        sendBytes = new byte[1024];

                        while ((length = fis.read(sendBytes, 0, sendBytes.length)) > 0) {
                            dos.write(sendBytes, 0, length);

                            dos.flush();

                        }

                    } finally {
                        if (dos != null)

                            dos.close();

                        if (fis != null)

                            fis.close();

                        if (socket != null)

                            socket.close();

                    }

                } catch (Exception e) {
                    e.printStackTrace();

                }

            }

        }

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