[英]Communication between python client and java server
我的目標是從 python 套接字發送消息到 java 套接字。 我確實看過上面提到的資源。 但是,我正在努力讓 Python 客戶端與 Java 服務器通信。 主要是因為 python 中的 (End of line) 與 java 中的不同。
假設我從 python 客戶端寫信:消息 1:abcd 消息 2:efgh 消息 3:q(退出)
在 java 服務器:我收到消息 1:abcdefghq 后跟異常,因為 python 客戶端已從其末端關閉套接字。
任何人都可以為 java 和 python 之間的一致對話提出解決方案。
參考資料我用過: http://www.prasannatech.net/2008/07/socket-programming-tutorial.html
更新:我忘了補充,我正在研究 TCP。
我的 JAVA 代碼是這樣的:(服務器套接字)
String fromclient;
ServerSocket Server = new ServerSocket (5000);
System.out.println ("TCPServer Waiting for client on port 5000");
while(true)
{
Socket connected = Server.accept();
System.out.println( " THE CLIENT"+" "+ connected.getInetAddress() +":"+connected.getPort()+" IS CONNECTED ");
BufferedReader inFromClient = new BufferedReader(new InputStreamReader (connected.getInputStream()));
while ( true )
{
fromclient = inFromClient.readLine();
if ( fromclient.equals("q") || fromclient.equals("Q") )
{
connected.close();
break;
}
else
{
System.out.println( "RECIEVED:" + fromclient );
}
}
}
我的 PYTHON 代碼:(客戶端套接字)
client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
client_socket.connect(("localhost", 5000))
while 1:
data = raw_input ( "SEND( TYPE q or Q to Quit):" )
if (data <> 'Q' and data <> 'q'):
client_socket.send(data)
else:
client_socket.send(data)
client_socket.close()
break;
OUTPUT::
在 PYTHON 控制台(客戶端)上:
SEND(鍵入 q 或 Q 以退出):abcd(按 ENTER)
SEND(鍵入 q 或 Q 以退出):efgh(按 ENTER)
SEND(鍵入 q 或 Q 以退出):q(按 ENTER)
在 JAVA 控制台(服務器)上:
TCPServer 在端口 5000 上等待客戶端
客戶端 /127.0.0.1:1335 已連接
收到:abcdefghq
將\\n
附加到data
末尾:
client_socket.send(data + '\n')
你需要在python客戶端的字符串末尾添加'\\ n'這里是一個例子...... PythonTCPCLient.py
`
#!/usr/bin/env python
import socket
HOST = "localhost"
PORT = 8080
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.connect((HOST, PORT))
sock.sendall("Hello\n")
data = sock.recv(1024)
print "1)", data
if ( data == "olleH\n" ):
sock.sendall("Bye\n")
data = sock.recv(1024)
print "2)", data
if (data == "eyB}\n"):
sock.close()
print "Socket closed"
`
現在這是java代碼: JavaServer.java`
import java.io.*;
import java.net.*;
class JavaServer {
public static void main(String args[]) throws Exception {
String fromClient;
String toClient;
ServerSocket server = new ServerSocket(8080);
System.out.println("wait for connection on port 8080");
boolean run = true;
while(run) {
Socket client = server.accept();
System.out.println("got connection on port 8080");
BufferedReader in = new BufferedReader(new InputStreamReader(client.getInputStream()));
PrintWriter out = new PrintWriter(client.getOutputStream(),true);
fromClient = in.readLine();
System.out.println("received: " + fromClient);
if(fromClient.equals("Hello")) {
toClient = "olleH";
System.out.println("send olleH");
out.println(toClient);
fromClient = in.readLine();
System.out.println("received: " + fromClient);
if(fromClient.equals("Bye")) {
toClient = "eyB";
System.out.println("send eyB");
out.println(toClient);
client.close();
run = false;
System.out.println("socket closed");
}
}
}
System.exit(0);
}
}
這是一個相同的工作代碼:Jserver.java
import java.io.*;
import java.net.*;
import java.util.*;
public class Jserver{
public static void main(String args[]) throws IOException{
ServerSocket s=new ServerSocket(5000);
try{
Socket ss=s.accept();
PrintWriter pw = new PrintWriter(ss.getOutputStream(),true);
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
BufferedReader br1 = new BufferedReader(new InputStreamReader(ss.getInputStream()));
//String str[20];
//String msg[20];
System.out.println("Client connected..");
while(true)
{
System.out.println("Enter command:");
pw.println(br.readLine());
//System.out.println(br1.readLine());
}
}
finally{}
}
}
Client.py
import socket # Import socket module
s = socket.socket() # Create a socket object
host = socket.gethostname() # Get local machine name
port = 5000 # Reserve a port for your service.
s.connect((host, port))
while 1:
print s.recv(5000)
s.send("message processed.."+'\n')
s.close
我知道它已經晚了但是特別針對你的情況我會推薦RabbitMQ RPC調用。 他們在Web上有很多Python,Java和其他語言的例子:
對於正在掙扎的人來說,
data = raw_input ( "SEND( TYPE q or Q to Quit):" )
您還可以使用.encode()
發送數據
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