bank.java

用jsp＋servlet

import java.io.*;
import java.util.ArrayList;
import java.rmi.*;
import java.rmi.server.*;

/**
 * A bank contains customers with bank accounts.
 */
public class Bank extends UnicastRemoteObject implements Serializable,
		BankInterface {
	/**
	 * Constructs a bank with no customers.
	 */
	public Bank() throws RemoteException {
		customers = new ArrayList<Customer>();
	}

	/**
	 * Reads the customer numbers and pins and initializes the bank accounts.
	 * 
	 * @param filename
	 *            the name of the customer file
	 */
	public void readCustomers(String filename) throws RemoteException {
		DBConnection db = new DBConnection();
		db.executeQuery("select * from atm");
		while (db.rs_next()) {
			int number = db.rs_getInt("accountnumber");
			int pin = db.rs_getInt("pin");
			Customer c = new Customer(number, pin);
			addCustomer(c);
		}
	}

	/**
	 * Adds a customer to the bank.
	 * 
	 * @param c
	 *            the customer to add
	 */
	public void addCustomer(Customer c) throws RemoteException {
		customers.add(c);
	}

	/**
	 * Finds a customer in the bank.
	 * 
	 * @param aNumber
	 *            a customer number
	 * @param aPin
	 *            a personal identification number
	 * @return the matching customer, or null if no customer matches
	 */
	public Customer findCustomer(int aNumber, int aPin) throws RemoteException {
		for (int i = 0; i < customers.size(); i++) {
			Customer c = (Customer) customers.get(i);
			if (c.match(aNumber, aPin))
				return c;
		}
		return null;
	}

	public static void main(String args[]) {
		try {
			Bank bank = new Bank();
			java.rmi.registry.LocateRegistry.createRegistry(1099);
			Naming.rebind("rmi://localhost:1099/bank", bank);
		} catch (Exception e) {
			// TODO: handle exception
		}

	}

	private ArrayList<Customer> customers;
}