Question

我的目标是从python套接字向java套接字发送消息。我确实看了上面提到的资源。但是我很难让Python客户端与Java服务器通信。主要是因为python中的（行尾）与java中的不同。

说我从python客户端写：消息1：abcd消息2：efgh消息3：q（退出）

在java服务器上：我收到消息1：abcdefghq后跟异常，因为python客户端已经从它的末尾关闭了套接字。

有人可以为java和python之间的一致谈话提出解决方案。

我使用的参考：http://www.prasannatech.net/2008/07/socket-programming-tutorial.html

更新：我忘了添加，我正在研究TCP。

我的JAVA代码如下:(服务器套接字）

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代码:(客户端套接字）

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 ::

ON PYTHON CONSOLE（客户）：

发送（Q型或Q退出）：abcd（按ENTER键）

发送（Q型或Q退出）：efgh（按ENTER键）

发送（Q型或Q退出）：q（按ENTER键）

ON JAVA CONSOLE（服务器）：

TCPServer在端口5000上等待客户端

客户端/127.0.0.1:1335已连接

收到：abcdefghq

Answer 1

您需要将\n附加到数据结尾...

即。：

client_socket.send(data + '\n')

Answer 2

ya ..你需要在python客户端的字符串末尾添加'\ n'..... 这是一个例子...... 的 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"

`

现在这是java代码：的 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); } }

` 参考：Python TCP Client & Java TCP Server

Answer 3

这是一个相同的工作代码： 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

Answer 4

我知道它已经晚了但是特别针对你的情况我建议使用RabbitMQ RPC调用。他们的网站上有很多Python，Java和其他语言的例子：

https://www.rabbitmq.com/tutorials/tutorial-six-java.html

python客户端和java服务器之间的通信

4 个答案: