android开发学习——Socket发送和接收

client -- server发送过程中,涉及的输入流输出流：

http://blog.csdn.net/dlwh_123/article/details/35982015   （良心好文）

 

需要注意的是：先运行服务器端，再进行客户端。

 

 http://blog.csdn.net/qq7342272/article/details/9698413  （值得推荐的好文）

 

public class SocketServer {

    public static void main(String[] args) {
 
        SocketServer socketServer = new SocketServer();
        socketServer.startServer();
    }

    public void startServer() {
        ServerSocket serverSocket = null;
        Socket socket = null;
        try {
            //1.建立一个服务器端，绑定指定端口
            serverSocket = new ServerSocket(9898);
            System.out.println("server started..");
            while (true) {
                //2.等待客户端的连接。如果有客户端接入，则执行下面的代码；没有客户端接入，在这里阻塞。
                socket = serverSocket.accept();
                // 如果有客户端接入，在此方法执行客户端和服务器数据传输的操作。
                manageConnection(socket);
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                socket.close();
                serverSocket.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    public void manageConnection(final Socket socket) {
        new Thread(new Runnable() {
            @Override
            public void run() {
                BufferedReader reader = null;
                BufferedWriter writer =null;
                try {
                    System.out.println("client " + socket.hashCode() + " connedted");
                    //3.从网络->内存 in 获得输入流
                    reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
                    //3.从内存->网络 out 获得输出流
                    writer = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));
                    String receivedMsg;
                    //4.得到客户端发来的消息
                    while ((receivedMsg = reader.readLine()) != null) {
                        System.out.println("client " + socket.hashCode() + ": " + receivedMsg);
                        //4.向客户端写出消息
                        writer.write("server reply: " + receivedMsg + "\n");
                        writer.flush();
                    }
                } catch (IOException e) {
                    e.printStackTrace();
                } finally {
                   //5.关闭资源
                    try {
                        reader.close();
                        writer.close();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
            }
        }).start();
    }

}

public class SocketClient {

    public static void main(String[] args) {
        SocketClient client = new SocketClient();
        client.start();
    }

    public void start() {
        BufferedReader inputReader = null;
        BufferedReader reader = null;
        BufferedWriter writer = null;
        Socket socket = null;
        try {
            //1.建立客户端socket连接，指定服务器位置及端口
            socket = new Socket("127.0.0.1", 9898);
            //2.从网络->内存 in
            reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
            //2.从内存->网络 out
            writer = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));
 
            inputReader = new BufferedReader(new InputStreamReader(System.in));
            startServerReplyListener(reader);
            String inputContent;
            int count = 0;
 
            while (!(inputContent = inputReader.readLine()).equals("bye")) {
                //3.向客户端发送消息
                writer.write(inputContent);
                if (count % 2 ==0) {
                    writer.write("\n");
                }
                count++;
                writer.flush();
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
             //4.关闭资源
            try {
                reader.close();
                writer.close();
                inputReader.close();
                socket.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    public void startServerReplyListener(final BufferedReader reader) {
        new Thread(new Runnable() {
            @Override
            public void run() {
                try {
                    String response;
                   //3.得到客户端发来的消息
                    while ((response = reader.readLine()) != null) {
                        System.out.println(response);
                    }
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }).start();
    }

}