view.java

一个简单的银行系统

package view;

import biz.Bank;
import biz.BankImpl;

import com.kettas.common.SystemIn;

import entity.Account;
import exception.AccountNotExistException;
import exception.BalanceNotEnoughException;
import exception.RegisterException;

public class View {
	Bank bank=new BankImpl();
	long id;
	public void main(){
		System.out.println("1：注册");
		System.out.println("2：登陆");
		System.out.println("请输入您的选择：");
		int a=SystemIn.readInt();
		if(a==1){
			register();
		}
		if(a==2) {
			login();
		}
	}
	void register(){
		//(String personId,
			//	String password, String password2,String name,int type) throws RegisterException;
		System.out.println("请输入您的身份证号：");
		String personId=SystemIn.readString();
		System.out.println("请输入您的帐户密码：");
		String password=SystemIn.readString();
		System.out.println("请再次输入您的帐户密码：");
		String password2=SystemIn.readString();
		System.out.println("请输入您的姓名：");
		String name=SystemIn.readString();
		System.out.println("请输入您的帐户类型，1为普通帐户，2为信用帐户");
		int type=SystemIn.readInt();
		
		try {
			id=bank.register(personId, password, password2, name, type);
		} catch (RegisterException e) {
			System.out.println(e.getMessage());
		}
		System.out.println("注册成功，卡号是:"+id);
		biz();
	}
	
	void login(){
		System.out.println("请输入您的卡号：");
		String iid=SystemIn.readString();
		long cardId=Long.parseLong(iid);
		System.out.println("请输入您的帐户密码：");
		String password=SystemIn.readString();
		try {
			id=bank.login(cardId, password);
		} catch (AccountNotExistException e) {
			System.out.println(e.getMessage());
		}
		if(id!=-1) {
			System.out.println("登陆成功");
			biz();
		}
		else System.out.println("登陆失败");
	}
	
	void biz(){
		System.out.println("1：存钱");	
		System.out.println("2：取钱");
		System.out.println("3：查询");
		System.out.println("4：返回");
		int i=SystemIn.readInt();
		if(i==1){
			System.out.println("请输入存多少钱：");
			int money=SystemIn.readInt();
			bank.deposit(id, money);
			biz();
		}
		else if(i==2){
			System.out.println("请输入取多少钱：");
			int money=SystemIn.readInt();
			try {
				bank.withDraw(id, money);
			} catch (BalanceNotEnoughException e) {
				System.out.println(e.getMessage());
			}
			biz();
		}
		else if(i==3){
			System.out.println("你的余钱为："+bank.select(id));
			biz();
		}else{
			main();
		}
	}
}