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EchoServer(Java)没有将消息返回给客户端(golang)

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我正在尝试创建客户端写入的TCP客户端(golang)服务器(Java)应用程序,服务器回显此文本并将消息返回给客户端,然后回复客户端 .

Server code (Java):

public static void main(String[] args) throws Exception {

    int port = 4444;
    ServerSocket serverSocket = new ServerSocket(port);
    System.err.println("Started server on port " + port);

    while (true) {
        Socket clientSocket = serverSocket.accept();
        System.err.println("Accepted connection from client");

        BufferedReader in = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));

        PrintWriter out = new PrintWriter(clientSocket.getOutputStream(), true);
        String s;
        while ((s = in.readLine()) != null) {
            out.println(s);
            System.out.println(s);

        }

        System.err.println("Closing connection with client");
        out.close();
        in.close();
        clientSocket.close();
    }
}

Client code (golang):

package main

import (
    "net"
    "os"
)

func main() {
    strEcho := "Hello"
    servAddr := "localhost:4444"
    tcpAddr, err := net.ResolveTCPAddr("tcp", servAddr)
    if err != nil {
        println("ResolveTCPAddr failed:", err.Error())
        os.Exit(1)
    }

    conn, err := net.DialTCP("tcp", nil, tcpAddr)
    if err != nil {
        println("Dial failed:", err.Error())
        os.Exit(1)
    }

    _, err = conn.Write([]byte(strEcho))
    if err != nil {
        println("Write to server failed:", err.Error())
        os.Exit(1)
    }

    println("write to server = ", strEcho)

    reply := make([]byte, 1024)
    _, err = conn.Read(reply)

    if err != nil {
        println("Write to server failed:", err.Error())
        os.Exit(1)
    }

    println("reply from server=", string(reply))

    conn.Close()
}

当我启动Java服务器然后运行Go应用程序时,服务器表示已接受连接(即“从客户端接受连接”),但永远不会将回送返回给客户端 . 客户端在“写入服务器= Hello”时停止,即对服务器的写入工作正常,但是对客户端的读回没有 . 知道为什么会这样吗?

1 回答

  • 2

    尝试发送换行符以匹配服务器端的 readLine 语句

    strEcho := "Hello\n"
    

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