해결할 수없는 간단한 수정 프로그램이어야합니다. 서버와 클라이언트 사이의 총 계산, 가격 * 수량을 반환합니다. 그러나 java.net.SocketException: Connection Reset
을 받고 있습니다. ComputerServer
클래스 (클래스 HandleAClient
, ComputerClient
클래스 및 Computer
클래스)를 삽입했습니다. 나는 어떤 도움도 환영한다. 고맙습니다!멀티 스레딩 클라이언트/서버, 소켓 예외
import java.io.*;
import java.util.*;
import java.net.*;
import java.util.concurrent.Executors;
import java.util.concurrent.ExecutorService;
public class ComputerServer
{
public static void main(String args[])
{
ServerSocket serverSocket;
Socket connection;
ObjectInputStream input;
ObjectOutputStream output;
Computer c = null;
Object obj;
double totalCharge;
try
{
serverSocket = new ServerSocket(8000);
System.out.println("Waiting for Client");
int clientNo = 1;
ExecutorService threadExecutor = Executors.newCachedThreadPool();
while(true)//runs indefinitely
{
connection = serverSocket.accept();
input = new ObjectInputStream(connection.getInputStream());
output = new ObjectOutputStream(connection.getOutputStream());
obj = input.readObject();
System.out.println("Object Received from client:\n"+obj);
if(obj instanceof Computer)
{
totalCharge = ((Computer)obj).getPrice()*((Computer)obj).getQuantity();
HandleAClient thread = new HandleAClient(connection, clientNo, totalCharge);
threadExecutor.execute(thread);
output.writeObject(totalCharge);
output.flush();
}
clientNo++;
}
}
catch(ClassNotFoundException cnfe)
{
cnfe.printStackTrace();
}
catch(IOException ioe)
{
ioe.printStackTrace();
}
}//end of main
}
class HandleAClient implements Runnable
{
//**SHOULD i do object...
//Scanner input;
//Formatter output;
Object obj;
ObjectOutputStream output;
ObjectInputStream input;
Socket connection;
ServerSocket serverSocket;
int clientNo;
//variables for calculation
//variables for calculation
double price;
double totalCharge;
public HandleAClient(Socket connection, int clientNo, double totalCharge)
{
this.connection = connection;
this.clientNo = clientNo;
this.totalCharge = totalCharge;
}
public void run()
{
//ArrayList<Computer> cList = new ArrayList<Computer>();
try
{
input = new ObjectInputStream(connection.getInputStream());
output = new ObjectOutputStream(connection.getOutputStream());
/*while(input.hasNext())
{
//variable = input.next....
//print out calculation
price = input.nextDouble();
System.out.println("Price received from client:\t"+clientNo+"is"+price);
//DO CALCULATION, STORE IT
for(Computer c: cList)//**TRYING a for loop
{
totalCharge = ((Computer)c).getPrice() * ((Computer)c).getQuantity();
output.format("%.2f\n", totalCharge);
//output.flush();
}
//}*/
System.out.println("TotalCharge"+totalCharge);
System.out.println("Thread"+"\t"+clientNo+"\t"+"ended");
}
catch(IOException ioe)
{
ioe.printStackTrace();
}
}
}
import java.util.*;
import java.io.*;
import java.net.*;
public class ComputerClient
{
public static void main(String args[])
{
Socket connection;
ObjectOutputStream output;
ObjectInputStream input;
Object obj;
Computer c = new Computer("Asus",1189.99,4);
try
{
connection = new Socket("localhost",8000);
output = new ObjectOutputStream(connection.getOutputStream());
input = new ObjectInputStream(connection.getInputStream());
output.writeObject(c);
output.flush();
//read back:
obj=(Object)input.readObject();
System.out.println(obj.toString());
}
catch(ClassNotFoundException cnfe)
{
cnfe.printStackTrace();
}
catch(IOException ioe)
{
ioe.printStackTrace();
}
}
}
import java.io.Serializable;
public class Computer implements Serializable
{
private String brand;
private double price;
private int quantity;
public Computer()
{
setBrand("");
setPrice(0.0);
setQuantity(0);
}
public Computer(String b, double p, int q)
{
setBrand(b);
setPrice(p);
setQuantity(q);
}
public String getBrand()
{
return brand;
}
public double getPrice()
{
return price;
}
public int getQuantity()
{
return quantity;
}
public void setBrand(String b)
{
brand = b;
}
public void setPrice(double p)
{
price = p;
}
public void setQuantity(int q)
{
quantity = q;
}
public String toString()
{
return("Brand: "+brand+"\t"+"Price: "+price+"\t"+"Quantity: "+quantity);
}
}
방금 출력 한 결과 4759.96이 출력되었습니다. 예외는 전혀 없습니다. 게시물에 스택 추적을 추가 할 수 있습니까? – Don
실행 해 주셔서 감사합니다. 예외는 클라이언트가 아닌 서버에서 버려집니다. 나는 할 것이다. – Alfred
내 서버 창이 이클립스에 의해 클라이언트 윈도우 아래에 묻혀서 나쁘다. 나는 지금 그것을보고 대답을 게시했다. – Don