我尝试从服务器向客户机发送消息,客户机收到消息后,会向服务器发回消息,以此类推。问题在于用python接收消息。环卡在那里了。
import socket
HOST = "localhost"
PORT = 9999
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
print('Socket created')
try:
s.bind((HOST, PORT))
except socket.error as err:
print('Bind failed. Error Code : ' .format(err))
s.listen(10)
print("Socket Listening")
conn, addr = s.accept()
while(True):
conn.send(bytes("Message"+"\r\n",'UTF-8'))
print("Message sent")
data = conn.recv(1024)
print(data.decode(encoding='UTF-8'))
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.Socket;
import java.net.UnknownHostException;
public class Main {
static Thread sent;
static Thread receive;
static Socket socket;
public static void main(String args[]){
try {
socket = new Socket("localhost",9999);
} catch (UnknownHostException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
sent = new Thread(new Runnable() {
@Override
public void run() {
try {
BufferedReader stdIn =new BufferedReader(new InputStreamReader(socket.getInputStream()));
PrintWriter out = new PrintWriter(socket.getOutputStream(), true);
while(true){
System.out.println("Trying to read...");
String in = stdIn.readLine();
System.out.println(in);
out.print("Try"+"\r\n");
System.out.println("Message sent");
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
sent.start();
try {
sent.join();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
Python代码很好。问题是,在Java代码中调用
out.print
不一定会导致消息立即通过套接字发送。添加紧接着
强制通过套接字发送消息。(^{} “刷新”流中任何尚未发送的数据。)然后Python应该能够正确接收它。
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