[英]JAVA Socket Programing infinite loop
This is my code for Socket Programming... 这是我的套接字编程代码。
import java.io.*;
import java.net.*;
public class EchoClient
{
public static void main(String[] args)
{
try
{
Socket s = new Socket("127.0.0.1",9999);
BufferedReader r = new BufferedReader(new InputStreamReader(s.getInputStream()));
PrintWriter w = new PrintWriter(s.getOutputStream(),true);
BufferedReader con = new BufferedReader(new InputStreamReader(System.in));
String line;
do
{
line = r.readLine();
if (line != null)
{ System.out.println(line); }
line = con.readLine();
w.println(line);
}
while(!line.trim().equals("bye"));
}
catch(Exception err)
{ System.err.println(err); }
}
}
Code for Server: 服务器代码:
import java.io.*;
import java.net.*;
public class EchoServer
{
public EchoServer(int portnum)
{
try
{ server = new ServerSocket(portnum); }
catch(Exception err)
{ System.out.println(err); }
}
public void serve()
{
try
{
while(true)
{
Socket client;
client = server.accept();
BufferedReader r;
r = new BufferedReader(new InputStreamReader(client.getInputStream()));
PrintWriter w = new PrintWriter(client.getOutputStream(),true);
w.println("Welcome to Java EchoServer. Type 'bye' to close.");
String line;
do
{
line = r.readLine();
if (line != null)
{ w.println("Got: " + line); }
}
while(!line.trim().equals("bye"));
client.close();
}
}
catch(Exception err)
{ System.err.println(err); }
}
public static void main(String[] args)
{
EchoServer s = new EchoServer(9999);
s.serve();
}
private ServerSocket server;
}
The program keeps on taking input in an infinite loop and giving no response even when I type "bye". 该程序继续以无限循环的形式输入,即使我键入“ bye”也没有响应。 I think the main problem lies in Server.accept() that seems to be not working.
我认为主要问题在于Server.accept()似乎不起作用。 What might be wrong?
可能是什么问题?
Change client side code 更改客户端代码
line = r.readLine();
to 至
line = con.readLine();
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