login.java

ATM简易模拟器 使用java源码模拟银行ATM机的处理过过程

/**
 * 这是检验用户登录的类，
 */
package user;

import java.util.StringTokenizer;

import util.FactoryClass;
import util.FatherInterface;
import util.Input;
import util.ShowGUI;

public class Login implements FatherInterface {
	String cardNo = null;

	String name = "";

	String pass = "";

	public Login() {
		ShowGUI.showFace("faceLogin.txt");
		System.out.print("请输入您的卡号：");
		cardNo = Input.getInput();
		if (Input.isNumeric(cardNo)) {
			showLoginInfo(isLogin());// 判断登录是否成功
		} else {
			System.out.println("卡号必须为数字，您的输入有误");
			FactoryClass.getInstance(FactoryClass.classNameArray[1]);
		}
	}

	private boolean isLogin() {

		if (choseCurrentUser(cardNo)) {
			System.out.print("请输入您的用户名：");
			name = Input.getInput();
			System.out.print("请输入您的密码：");
			pass = Input.getInput();
			if (name.equals(CurrentUser.currentUserName)
					&& pass.equals(CurrentUser.currentUserPass)) {
				return true;
			}
		}
		return false;
	}

	public boolean choseCurrentUser(String inputCardNo) {// 这是检测用户帐户卡号是否存在的方法
		// 如果从帐号文件中查询到了该卡号，则就将该卡号对应的用户名、用户密码和用户钱数分别读取到当前用户类CurrentUser的currentUserName
		// currentUserPass currentUserMoney三个变量中，以便对用户帐户进行程序运行时的更改操作
		int i = 0;
		String str;
		StringTokenizer tempTokenizer = new StringTokenizer(
				CurrentUser.allAccounts[0]);
		for (i = 0; i < CurrentUser.userNum; i++) {
			tempTokenizer = new StringTokenizer(CurrentUser.allAccounts[i]);
			str = tempTokenizer.nextToken();
			if (str.equals(inputCardNo)) {
				CurrentUser.index = i;
				CurrentUser.currentCardNo = str;
				CurrentUser.currentUserName = tempTokenizer.nextToken();
				CurrentUser.currentUserPass = tempTokenizer.nextToken();
				CurrentUser.currentUserMoney = Float.parseFloat(tempTokenizer
						.nextToken());
				return true;
			}
		}
		System.out.println("错误，您所输入的卡号不存在");
		FactoryClass.getInstance(FactoryClass.classNameArray[1]);
		return false;
	}

	private void showLoginInfo(boolean loginOrNot) {
		if (loginOrNot) {
			System.out
					.println("**************************欢迎，登录成功***************************");
			System.out.println("登录信息：卡号 " + CurrentUser.currentCardNo + " 用户名："
					+ CurrentUser.currentUserName + "用户密码："
					+ CurrentUser.currentUserPass);
			FactoryClass.getInstance(FactoryClass.classNameArray[3]);
		} else {
			System.out.println("你输入的用户名和密码错误");
			FactoryClass.getInstance(FactoryClass.classNameArray[1]);
		}
	}

}