Android TCP 简单实现

来源：互联网发布：淘宝小号购买实名认证编辑：程序博客网时间：2024/06/06 09:45

说明

测试程序分为两个部分：Android 客户端、Java 服务端。

Android 客户端：连接指定IP和PORT，并发送“abcd”。
Java 服务端：阻塞等待连接。

Android 客户端

public class MainActivity extends Activity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        new Thread(new Client()).start();    }    Socket socket = null;    BufferedWriter writer = null;    BufferedReader reader = null;    public class Client implements Runnable {        public void run() {            try {                socket = new Socket("172.24.187.1", 12345);                writer = new BufferedWriter(new OutputStreamWriter(                        socket.getOutputStream()));                reader = new BufferedReader(new InputStreamReader(                        socket.getInputStream()));            } catch (UnknownHostException e) {                e.printStackTrace();            } catch (IOException e) {                e.printStackTrace();            }            try {                // 接收信息                // String line;                // while ((line = reader.readLine()) != null) {                // System.out.println(line);                // }                // 发送信息                // 发送字符串要加\n                if (writer != null) {                    writer.write("abcd\n");                    writer.flush();                }            } catch (Exception e) {                e.printStackTrace();            }        }    }}

Java 客户端

public class ServerTest {    public static void main(String[] args) {        Thread thread = new Thread(new Runnable() {            public void run() {                try {                    ServerSocket serverSocket = new ServerSocket(12345);                    while (true) {                        // block                        Socket socket = serverSocket.accept();                        System.out.println("建立连接");                        // 接收消息                        BufferedReader br = new BufferedReader(                                new InputStreamReader(socket.getInputStream(),                                        "UTF-8"));                        String line = null;                        while ((line = br.readLine()) != null) {                            System.out.println(line);                        }                        br.close();                        // 发送消息                        // socket.getOutputStream().write((out+"\n").getBytes("UTF-8"));                    }                } catch (HeadlessException e) {                    e.printStackTrace();                } catch (IOException e) {                    e.printStackTrace();                }            }        });        thread.start();    }

1 0