所以我用python创建了这台服务器，并用python客户端和java客户端（两者都与服务器cuz在同一台PC上运行，但我只有一台PC）进行了测试，以确保它们都可以正常工作。但是，当我从android创建套接字（在同一wifi而不是模拟器上）并尝试将其连接到服务器时，出现以下异常https://i.stack.imgur.com/WrT9P.png。 以下是python服务器代码
import socket
import tkinter as tk
from threading import Thread
import pyqrcode
from PIL import ImageTk, Image
import time
import re
from tkinter import messagebox
def close_window():
if messagebox.askokcancel("Quit", "Do you want to quit?"):
gui.stop_connection()
window.destroy()
class GUI:
def __init__(self, root):
self.listen_socket = None
self.data = ''
self.running = 0
self.addr = None
self.conn = None
self.thread = None
self.label = tk.Label(root, text="Your qr code will be displayed below",
bg='#05499E', fg='white', padx=10, pady=10)
self.label.pack(padx=10, pady=10)
self.host_name = socket.gethostname()
ip_add = socket.gethostbyname(self.host_name)
qr = pyqrcode.create(ip_add, mode='binary')
save = qr.png('ip_add.png', 9)
self.my_img = ImageTk.PhotoImage(Image.open('I:\\Pycharm Projects\\QRCodeApp\\ip_add.png'))
self.image_label = tk.Label(image=self.my_img)
self.image_label.pack(padx=10, pady=10)
self.start_btn = tk.Button(
window, text="Start connection",
command=self.start_connection, fg='#05499E', bg='white',
font=('Helvetica', 16), bd=2, padx=5, pady=5, relief='solid'
)
self.start_btn.pack(padx=10, pady=10)
self.stop_btn = tk.Button(
window, text="Stop connection",
command=self.stop_connection, fg='#05499E', bg='white',
font=('Helvetica', 16), bd=2, padx=5, pady=5, relief='solid'
)
self.stop_btn.pack(pady=10)
self.connection_status = tk.Label(
root, text="Not connected", fg='red', font=('Helvetica', 16)
)
self.connection_status.pack(pady=10)
def socket_thread(self):
print("Thread started...")
self.listen_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
port = 65432
host = '192.168.56.1'
self.listen_socket.bind((host, port))
print(f"Server is listening on port {port}")
self.listen_socket.listen(10)
while self.running != 0:
if self.conn is None:
try:
print('Before accepting')
(self.conn, self.addr) = self.listen_socket.accept()
print(f"Client is at address {self.addr[0]}, on port {self.addr[1]}")
self.connection_status.configure(text='Connected!', fg='green')
except socket.timeout as se:
print("Connection timeout")
except Exception as e:
print('Exception while connecting : ' + str(e))
if self.conn is not None:
print(f"Connected to {self.conn}, at {self.addr}")
self.data = ''
while self.data != 'done':
self.data = ''
try:
self.data = str(self.conn.recv(1024).decode('utf-8'))
match = re.search('[A-Za-z0-9].*[A-Za-z0-9]', self.data)
self.data = match.group()
except Exception as e:
print("Socket error : " + str(e))
if len(self.data):
print('Got data :', self.data)
elif self.running == 0:
print('Tired of waiting for connection')
self.data = 'done'
# self.stop_connection()
print('Closing connection...')
self.conn = None
self.connection_status.configure(text="Not connected", fg='red')
print('Connection closed.')
print("Closing listener...")
self.conn.close()
self.listen_socket.close()
def start_connection(self):
if self.running == 0:
print('Starting thread...')
self.running = 1
self.thread = Thread(target=self.socket_thread)
self.thread.start()
else:
print('Thread already running !')
def stop_connection(self):
if self.running:
print('Stopping thread...')
self.connection_status.configure(text="Not connected", fg='red')
self.running = 0
self.thread.join(timeout=0.05)
self.thread = None
self.data = ''
print('thread stopped')
else:
print('Thread not running!')
window = tk.Tk()
window.title("QR Code Generator")
window.iconbitmap("qr.ico")
window.configure(bg='#0E7EFF')
window.geometry('400x600+500+50')
window.pack_slaves()
gui = GUI(window)
window.protocol("WM_DELETE_WINDOW", close_window)
window.mainloop()
和我实际建立连接的android消息发送活动代码
package com.example.qrandbarcode;
import android.os.AsyncTask;
import android.util.Log;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.InetAddress;
import java.net.Socket;
public class MessageSender extends AsyncTask<String, Void, Void> {
DataOutputStream dos;
Socket socket;
@Override
protected Void doInBackground(String... voids) {
String message = voids[0];
Log.e("REACHED MESSENGER CLASS", "outside try catch");
try{
Log.e("BEFORE SOCKET CREATION", "Socket will be created after this");
socket = new Socket("192.168.56.1", 65432);
Log.e("CONNECTION", "status: " + socket.isConnected());
dos = new DataOutputStream(socket.getOutputStream());
dos.writeUTF(message);
dos.flush();
dos.close();
}catch (IOException e) {
Log.e("EXCEPTION OCCURRED", "couldn't connect" + e.getMessage());
e.printStackTrace();
}
return null;
}
}E/REACHED MESSENGER CLASS: outside try catch
E/BEFORE SOCKET CREATION: Socket will be created after this
E/EXCEPTION OCCURRED: couldn't connectfailed to connect to /192.168.56.1 (port 65432) from /:: (port 57684): connect failed: ETIMEDOUT (Connection timed out)
W/System.err: java.net.ConnectException: failed to connect to /192.168.56.1 (port 65432) from /:: (port 57684): connect failed: ETIMEDOUT (Connection timed out)