validation.java

旅馆预订系统.采用jstl+oracle,jsp/servlet,,供初学者学习用.

package HotelSystem;

import java.util.Iterator;
import java.util.LinkedList;
import java.util.Scanner;

public class Validation {
	int input;

	Scanner scan;

	// 控制台输入校验，得到字符串
	public String getString() {
		boolean success = false;
		String input = "";
		while (!success) {
			success = false;
			scan = new Scanner(System.in);
			input = scan.nextLine();
			if (!input.equals("")) {
				success = true;
				break;
			}
			System.out.print("不能为空，请重新输入：");
		}
		return input;
	}

	// 控制台输入校验，得到指定的字符或字符串
	public String getString(String[] range) {

		boolean success = false;
		String result = null;
		test:
		while (!success) {
			result = getString();
			for (int i = 0; i < range.length; i++) {
				if (result.equals(range[i])) {
					System.out.println(result.equals(range[i]));
					success = true;
					break test;
				}
			}
				System.out.print("输入超出指定范围,请重新输入：");
		}
		return result;

	}

	// 控制台输入校验，得到指定的数字
	public int getInt(int[] range) {
		boolean success = false;
		int result = 0;
		while (!success) {
			scan = new Scanner(System.in);
			result = getInt();
			if (result >= range[0] & result <= range[1]) {
				success = true;
			} else {
				System.out.print("输入超出指定范围" + "(" + range[0] + "-" + range[1]
						+ "),请重新输入：");
			}
		}
		return result;

	}

	// 控制台输入校验，得到指定ID对应Houses集合中的下标
	public int getInt(LinkedList<Integer> range, LinkedList<Houses> houses) {
		boolean success = false;
		int result = 0;
		while (!success) {

			result = getInt();
			for (int i = 0; i < range.size(); i++) {
				if (result == range.get(i)) {
					for (int j = 0; i < houses.size(); j++) {
						if (houses.get(j) instanceof Hotel) {
							Hotel hotel = (Hotel) houses.get(j);
							if (result == hotel.getId()) {
								result = j;
								success = true;
								break;
							}
						} else {
							Resort resort = (Resort) houses.get(j);
							if (result == resort.getId()) {
								result = j;
								success = true;
								break;
							}
						}

					}
				}
			}
			if (success == false) {
				System.out.print("没有这个ID,请重新输入:");
			}
		}
		return result;

	}

	/*
	 * public int getInt(LinkedList<Orders> houses) { boolean success=false;
	 * int result=0; while(!success){ result = getInt(); success=true; for(int
	 * i=0; i<houses.size(); i++) { } } return result; }
	 */

	// 控制台输入校验，得到数字输入
	public int getInt() {
		boolean success = false;
		while (!success) {
			scan = new Scanner(System.in);
			if (scan.hasNextInt()) {
				input = scan.nextInt();
				success = true;
				break;
			} else {
				System.out.print("输入的不是数字,请重新输入：");
			}

		}
		return input;
	}

	public String getEmail() {
		String input = null;
		boolean success = false;
		while (!success) {
			Scanner scan = new Scanner(System.in);
			if (scan.hasNextLine()) {
				input = scan.nextLine();
				if (!(input.indexOf("@") == -1)) {
					success = true;
				} else {
					System.out.print("不是一个有效的E-mail地址,请重新输入：");
				}
			}
		}
		return input;
	}

	public int getOrdersId(LinkedList<Orders> Orders) {
		int input = -1;
		boolean success = false;
		test:
		while (!success) {
			input = getInt();
			for (int i = 0; i < Orders.size(); i++) {
				Orders order = Orders.get(i);
				if (order.getOrdersId() == input) {
					success = true;
					input = i;
					System.out.println(i);
					break test;
				}
			}
			if (input==-1)
			{
				success = true;
			}
			
			if (success == false) {
				System.out.print("没有符合的订单，输入(0)退出菜单，请重新输入:");
			}
		}
		return input;

	}

	public int getInput() {
		return input;
	}

	public void setInput(int input) {
		this.input = input;
	}

}