python搭建服务器实现两个Android客户端间收发消息

python服务器

# coding:utf-8

import socket
import threading
import time


def handle_client(client_socket, client_id):
    """处理客户端请求"""
    # 获取客户端请求数据

    while True:
        try:
            request_data = client_socket.recv(1024)
        except Exception:
            time.sleep(0.2)
            continue
        if len(request_data) > 0:
            request_lines = request_data.splitlines()
            print(request_lines[0].decode("utf-8"))
            #res = int(request_lines[0]) + 1
            client_socket_list[(client_id+1) % 2].send(bytes(str(request_lines[0].decode("utf-8"))+"\n", "utf-8"))
    client_socket_list.remove(client_id)



if __name__ == "__main__":
    server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    """
    socket（）是一个函数，创建一个套接字，
    AF_INET 表示用IPV4地址族，
    SOCK_STREAM 是说是要是用流式套接字
    """
    # server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)  # 设置地址重用
    server_socket.bind(("10.2.70.42", 8000))  # 绑定端口
    server_socket.listen(2)  # 开启监听
    client_socket_list = []
    client_num = 0
    Isready = False

    while True:
        client_id = client_num
        client_socket, client_address = server_socket.accept()
        print("[%s, %s]用户连接上了" % client_address)
        handle_client_thread = threading.Thread(target=handle_client, args=(client_socket, client_id))
        """
        tartget表示这个进程到底要执行什么行为
        args是target要接受的参数
        """
        client_socket_list.append(client_socket)
        client_num += 1
        if len(client_socket_list) == 3:
            client_socket_list.pop(0)
        client_socket.setblocking(0)
        handle_client_thread.start()

Android客户端-Java代码

package com.example.administrator.wuziqi_intenet;

import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.Socket;
import java.net.URLDecoder;
import java.net.UnknownHostException;

import static com.example.administrator.wuziqi_intenet.R.id.button1;

public class MainActivity extends AppCompatActivity {

    Button button = null;
    TextView textView = null;
    EditText editText = null;
    Socket socket;
    BufferedWriter pw=null;
    BufferedReader is=null;
    String string="baba";
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);


        new Thread() {
            @Override
            public void run() {
                   try{
                        socket = new Socket("10.2.70.42", 8000);
                        socket.setSoTimeout(10000);
                        pw = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));
                        is = new BufferedReader(new InputStreamReader(socket.getInputStream()));
                    } catch (IOException e) {
                        e.printStackTrace();
                    }

                }
            }.start();

        button = (Button) findViewById(button1);
        textView = (TextView) findViewById(R.id.textview);
        editText = (EditText) findViewById(R.id.input);

        handler.sendEmptyMessageDelayed(1, 100);

        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                new Thread(){
                    @Override
                    public void run()
                    {
                        String msg = editText.getText().toString();
                        try{
                            pw.write(msg);
                            pw.flush();
                        } catch (UnknownHostException e) {
                            Toast.makeText(MainActivity.this,"失败1",Toast.LENGTH_SHORT).show();
                            e.printStackTrace();
                        } catch (IOException e) {
                            Toast.makeText(MainActivity.this,"失败2",Toast.LENGTH_SHORT).show();
                            e.printStackTrace();
                        }
                    }
                }.start();
                editText.setText("");
            }
        });

    }
    private Handler handler = new Handler() {

        public void handleMessage(Message message) {
            try {
                Moving();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

    };
    private void Moving() throws IOException {
        new Thread() {
            @Override
            public void run() {
                try {
                    if (is.ready())
                        string = is.readLine();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }.start();
        byte[] b=string.getBytes();
        String s1=new String(b);
        System.out.println(s1);
        textView.setText(string);
        handler.sendEmptyMessageDelayed(1, 100);
    }
}