I am working on a CD Shop programme with 5 inventory that are to be read from a file. The file inventory is seperated by tab. TCP Client/ Server Program for a CD shop with 5 inventory (Item code, CD name, Artist Name, Price, and Quantity in Stock which would be read from a file seperated by tabs.)
I have sucessfully connected to the tcp client and server program but i cannot make the following changes sucessfully.
-The server waits for client requests and transmits the inventory if an "I" is received.
-If a "B" followed by an item code is received, the quantity in stock should be updated to reflect that an item has been bought.
-A client program should connect to the server, download the inventory and display it to the customer.
-The customer should be able to buy any item by typing in the item's code.
-A shopping trolley should keep track of the items selected by the customer and give a total price for the whole transaction.
- No other input should work once connected except the following key letters above.
Any help would be greatly appreciated
cdShopServer.java
Code:
import java.io.*;
import java.net.*;
public class cdShopServer{
public static void main(String [] args){
//Server socket (can have a listening port to receive connections)
ServerSocket cdShopServer;
//Declares an InputStreamReader object to read from the client socket
InputStreamReader r;
//Declares a BufferedReader to read from InputStreamReader
BufferedReader br;
//Declares a PrintWriter object to write to the client socket
PrintWriter os;
Socket clientSocket;
// Try to open a server socket on port 1234
// port less than 1023 cnt be used reserved privileged users (root)
String line;
try
{
// Create a socket object from the ServerSocket to listen and accept
// connections.
// Open input and output streams
cdShopServer=new ServerSocket(1234);
clientSocket = cdShopServer.accept();
System.out.print("Server has been connected!\n");
r=new InputStreamReader(clientSocket.getInputStream());
br=new BufferedReader(r);
os = new PrintWriter(clientSocket.getOutputStream(),true);
// As long as we receive data, echo that data back to the client.
while (true) //This server stays active for ever
{
line = br.readLine();
System.out.println("Received: "+line);
os.println(line);
}
}
catch (IOException e)
{
System.out.println(e);
}
}
}
cdShopClient
Code:
import java.io.*; //Imports java input-output libraries (for StreamReaders)
import java.net.*; //Imports java network libraries (for sockets)
public class cdShopClient
{
public static void main(String[] args)
{
Socket cdShopSocket; //Declares a Socket
PrintWriter out; //Declares a PrintWriter object. This will be used
//to write to the socket
BufferedReader in; //Declares a Buffered reader. This object will be
//used to read from the socket
try
{
//Instantiates a new socket with the destination IP address and the listening port number
cdShopSocket = new Socket("136.147.107.117", 1234);
//Creates a new output stream in order to write to the socket
out = new PrintWriter(cdShopSocket.getOutputStream(),true);
//Input from the socket with a bufferedreader
4
in = new BufferedReader(new InputStreamReader(
cdShopSocket.getInputStream()));
//Input from the keyboard with a bufferedreader
BufferedReader stdIn = new BufferedReader(
new InputStreamReader(System.in));
String userInput;
while ((userInput = stdIn.readLine()) != null)
{
//Writes the user input into the socket for transmission
out.println(userInput);
//Writes the received "echo" line to the screen
System.out.println("User Input: " + in.readLine());
}
//Close all the input and output streams
out.close();
in.close();
stdIn.close();
cdShopSocket.close();
}
catch(Exception e)
{
System.out.println("Error: "+e.toString());
System.exit(-1);
}
}//end main
}//end cdShopClient
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