public class Server {
    
    public static void main(String[] args) throws Exception{
        ServerSocket server = new ServerSocket(5150);
        Socket client = server.accept();
        InputStream in = client.getInputStream();
        //这里设置读长度为1024，你可以考虑循环读取
        byte[] b = new byte[1024];
        int i = in.read(b);
        System.out.println(new String(b, 0, i));
    }
}