Java 客户端-服务器程序不工作

我是java新手。我想进行服务器-客户机套接字编程。在这里，客户端发送消息，服务器回复消息。我编写了以下代码：

Client.java

import  java.io.*;
import  java.net.*;

class Client 
{
    public static void main(String[] args) 
    {
        try
        {
            String host = "localhost";
            Socket socket = new Socket(host,25000);

            OutputStream os = socket.getOutputStream();

            OutputStreamWriter osw = new OutputStreamWriter(os);

            BufferedWriter bufferedwriter = new BufferedWriter(osw);
            String sendMessage = "hello from Client";

            bufferedwriter.write(sendMessage);
            // bufferedwriter.flush();

            InputStream is = socket.getInputStream();

            InputStreamReader isr = new InputStreamReader(is);

            BufferedReader br = new BufferedReader(isr);

            String input = br.readLine();

            System.out.println("The message recieved from server is : "+ input);
            socket.close();


        }
        catch (Exception e) {
            e.printStackTrace();
        }



    }
}

Server.java

import java.io.*;
import java.net.*;

class Server 
{
    private static Socket socket;
    public static void main(String[] args) 
    {
        try 
        {
            ServerSocket serverSocket = new ServerSocket(25000);
            System.out.println("Server started listening at port 25000");
            socket = serverSocket.accept();

            InputStream is = socket.getInputStream();

            InputStreamReader isr = new InputStreamReader(is);

            BufferedReader br = new BufferedReader(isr);

            String input = br.readLine();

            System.out.println("The message recieved from client is : "+ input);


            OutputStream os = socket.getOutputStream();

            OutputStreamWriter osw = new OutputStreamWriter(os);

            BufferedWriter bufferedwriter = new BufferedWriter(osw);
            String sendMessage = "hello from Server";

            bufferedwriter.write(sendMessage);
            bufferedwriter.flush();


            socket.close();
        }
        catch(Exception e)
        {
            e.printStackTrace();
        }
    }
}

程序的输出如下所示：

roomno311@thedestiny：~/Desktop/java$java服务器 服务器开始侦听端口25000 roomno311@thedestiny：~/Desktop/java$java客户端

---

上面的代码挂起在两者之间。我需要按Ctrl+C来关闭这些程序。请帮助我解决此问题。

客户端程序中的

readLine

语句要求从服务器发送以换行符

\n

结尾的相应字符串

因为您使用的是BufferedWriter，所以也可以像这样使用换行方法

在您的客户端中，在：

String sendMessage=“hello from client”之后

使用：

类似地，在您的服务器代码之后：
String sendMessage=“hello from server”

用户：

旁注-在发生异常的情况下，您不会关闭套接字。已更改字符串sendMessage=“hello from Server”+“\n”；和**字符串sendMessage=“来自服务器的你好”+“\n”**但它不起作用
bufferedwriter.write(sendMessage);
bufferedwriter.newLine();
bufferedwriter.flush();

bufferedwriter.write(sendMessage);
bufferedwriter.newLine();
bufferedwriter.flush();