간단한 클라이언트 - 서버 응용 프로그램을 만들려고하지만 코드를 실행할 때 클라이언트가 소켓의 입력 스트림을 가져올 수 없다는 예외가 발생합니다. 제발 코드를 살펴보고 도와 드리겠습니다. 감사합니다 :) 감사합니다 :)서버에서 캔트 "get"스트림
추신 : 지저분한 코드 죄송합니다. 두 가지 다른 응용 프로그램으로 실행하십시오.
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.net.InetAddress;
import java.net.Socket;
public class SimpleClient //implements Runnable
{
private ObjectOutputStream output; // output stream to server
private ObjectInputStream input; // input stream from server
private String message = ""; // message from server
private String chatServer="localhost"; // host server for this application
private Socket client; // socket to communicate with server
public void runClient()
{
try // connect to server, get streams, process connection
{
connectToServer(); // create a Socket to make connection
getStreams(); // get the input and output streams
processConnection(); // process connection
} // end try
catch(IOException ioe)
{
ioe.printStackTrace();
}
finally
{
// closeConnection(); // close connection
} // end finally
}
private void closeConnection()
{
try
{
output.close(); // close output stream
input.close(); // close input stream
client.close(); // close socket
} // end try
catch (IOException ioException)
{
ioException.printStackTrace();
} // end catch
} // end method closeConnection
private void connectToServer() throws IOException
{
System.out.println("Attempting connection\n");
// create Socket to make connection to server
client = new Socket(InetAddress.getByName(chatServer), 12345);
// display connection information
System.out.println("Connected to: " +
client.getInetAddress().getHostName());
} // end method connectToServer
private void getStreams() throws IOException
{
// set up output stream for objects
output = new ObjectOutputStream(client.getOutputStream());
output.flush(); // flush output buffer to send header information
// set up input stream for objects
input = new ObjectInputStream(client.getInputStream());
System.out.println("\nGot I/O streams\n");
} // end method getStreams
private void processConnection() throws IOException
{
do {
try // read message and display it
{
message = (String) input.readObject(); // read new message
System.out.println("\n" + message); // display message
} // end try
catch (ClassNotFoundException classNotFoundException)
{
System.out.println("\nUnknown object type received");
} // end catch
} while (!message.equals("SERVER>>> TERMINATE"));
} // end method processConnection
public String toString()
{
return "client connected to "+chatServer;
}
public static void main(String []args)
{
SimpleClient c= new SimpleClient();
c.runClient();
}
}
// ------------- 서버는 여기서 시작
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.ArrayList;
public class SimpleServer //implements Runnable
{
private ObjectOutputStream output; // output stream to client
private ObjectInputStream input; // input stream from client
private ServerSocket server; // server socket
private Socket connection; // connection to client
private int counter=1; //counts connections
ArrayList<SimpleClient> list;
/***
* Runs forever and takes care of alla
*/
public void runServer()
{
try // set up server to receive connections; process connections
{
server = new ServerSocket(12345, 100); // create ServerSocket
while (true)
{
try
{
waitForConnection(); // wait for a connection
getStreams(); // get input & output streams
processConnection(); // process connection
} // end try
catch (Exception Exception)
{
System.out.println("\nSomething bad happened");
} // end catch
finally
{
closeConnection();
counter++; // close connection
} // end finally
}
}
catch (IOException ioException)
{
System.out.println("An io error occured while creating a server-socket");
ioException.printStackTrace();
} // end catch
} // end method runServer
/***
* Waits for a client's request for connection
*/
public void waitForConnection()
{
try
{
connection = server.accept();
System.out.println("Client with IP and hostname "+connection.getInetAddress().getHostName());
} catch (IOException ex)
{
System.out.println("An error makes connection impossible");
ex.printStackTrace();
}
}
/***
* Makes the interconnection of client's and server's stream's
*/
public void getStreams()
{
try
{
output=(ObjectOutputStream) connection.getOutputStream();
input=(ObjectInputStream) connection.getInputStream();
output.flush();
System.out.println("Got IO Streams, hell yeah ");
}
catch(IOException ioe)
{
System.out.println("Cannot get streams");
ioe.printStackTrace();
}
}
/***
* Terminates connection
*/
public void closeConnection()
{
try
{
output.flush();
output.close();
input.close();
} catch (IOException ex)
{
ex.printStackTrace();
}
}
/***
* Receives messages from client
*/
public void processConnection()
{
String message="Connection successful";
do // process messages sent from client
{
try // read message and display it
{
message = (String) input.readObject(); // read new message
System.out.println("CLIENT>>> "+message);
} // end try
catch (ClassNotFoundException classNotFoundException)
{
System.out.println("\nUnknown object type received");
}
catch(IOException ioe)
{
System.out.println("Cannot receive message from clint");
ioe.printStackTrace();
}
} while (!message.equals("CLIENT>>> TERMINATE"));
}
/***
* Sends data to client
* @param message
*/
public void sendData(String message)
{
try // send object to client
{
output.writeObject("SERVER>>> " + message);
output.flush(); // flush output to client
System.out.println("SERVER>>> " + message);
}
catch(IOException ioe)
{
ioe.printStackTrace();
}
}
public String toString()
{
return "this is a simple server with a total of "+counter+" connections";
}
public static void main(String []args)
{
SimpleServer c= new SimpleServer();
c.runServer();
}
}
이 코드를 직접 작성하는 대신 작업 코드에 대해 실제로 google을 수정 한 다음 수정해야합니다. –
나는 그것을했으나 복사하지 않았다. 나는 그것이 어떻게 작동하는지보고 처음부터 다시 쓰려고했다. –