Question

我正在使用Socket和ServerSocket类在本地主机上进行通信客户发送否。到服务器和服务器计算no的平方。并发送回客户端

// Client Class


import java.net.*;

import java.io.*;

class SocketDemo

{

public static void main(String...arga) throws Exception
{
    Socket          s = null;
    PrintWriter    pw = null;
    BufferedReader br = null;
    System.out.println("Enter a number one digit");
    int i=(System.in.read()-48); // will read only one character
    System.out.println("Input number is "+i);
    try
    {
        s  = new Socket("127.0.0.1",10101);
        pw = new PrintWriter(s.getOutputStream());
        br = new BufferedReader(new InputStreamReader(s.getInputStream()));
        System.out.println("Connection established, streams created");
    }
    catch(Exception e)
    {
        System.out.println("Exception in Client "+e);
    }
    pw.println(i);
    System.out.println("Data sent to server");
    String str = br.readLine();
    System.out.println("The square of "+i+" is "+str);
}

}

// Server Side

import java.io.*;

import java.net.*;

class ServerSocketDemo

{

public static void main(String...args)
{
    ServerSocket ss=null;
    PrintWriter    pw = null;
    BufferedReader br = null;
    int i=0;
    try
    {
        ss = new ServerSocket(10101);
    }
    catch(Exception e)
    {
        System.out.println("Exception in Server while creating connection"+e);
    }
    System.out.print("Server is ready");
    while (true)
    {
        System.out.println ("  Waiting for connection....");
        Socket s=null;
        try
        {
            s = ss.accept();
            System.out.println("Connection established with client");
            pw = new PrintWriter(s.getOutputStream());
            br = new BufferedReader(new InputStreamReader(s.getInputStream()));
            i = new Integer(br.readLine());
            System.out.println("i is "+i);
        }
        catch(Exception e)
        {
            System.out.println("Exception in Server "+e);
        }
        System.out.println("Connection established with "+s);
        i*=i;
        pw.println(i);
        try
        {
            pw.close();
            br.close();
        }
        catch(Exception e)
        {
            System.out.println("Exception while closing streams");
        }
    }
}

}

请帮助

Answer 1

在客户端，在将数据发送到服务器

后执行此操作

 pw.println(i);
 pw.flush();

简单的客户端服务器应用程序，但出了点问题

1 个答案: