package com.hzyc.design;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Date;
import java.util.Scanner;
public class ScannerTools {
int validInteger() {
int valid = 0;
while (true) {
try {
Scanner sc = new Scanner(System.in);
System.out.println("\n(请输入一个整数：)");
valid = sc.nextInt();
//输入的是整数：那么就直接跳出，返回一个验证的值。
break;
} catch (Exception e) {
System.out.println("您的输入有误，请重新输入一个整数！");
e.printStackTrace();
}
}
return valid;
}
String validString() {
String valid = "";
while (true) {
try {
Scanner sc = new Scanner(System.in);
valid = sc.next();
break;
} catch (Exception e) {
System.out.println("您的输入有误，请重新输入！");
e.printStackTrace();
}
}
return valid;
}
/**
* 用于输入1-指定的数字
* */
int validIntegerIn(int num) {
ScannerTools sc = new ScannerTools();
while (true) {
try {
int scan = sc.validInteger();
if (0 < scan && scan <= num) {
return scan;
}
} catch (Exception e) {
System.out.println("请重新输入1 —— " + num + "范围内的数字");
e.printStackTrace();
}
}
}
String validDate() {
String valid = "";
boolean continueornot = true;
while (continueornot) {
Scanner sc = new Scanner(System.in);
SimpleDateFormat format = new SimpleDateFormat("yyyyMMdd");
System.out.println("请按指定的格式输入日期：" +
"例如：2020年10月10日【20201010】");
String validMess = sc.next();
try {
if (validMess == null || validMess.length() == 0) {
continueornot = true;
}
valid = validMess.replaceAll("[/\\- ]", "");
Date date = format.parse(valid);
if (format.format(date).equals(valid)) {
break;
}
System.out.println("您的输入不合法，该日期的火车票暂不售卖。请重新输入日期信息……\n");
} catch (Exception e) {
e.printStackTrace();
}
}
return valid;
}
String validVipSeat() {
Scanner sc = new Scanner(System.in);
while (true) {
switch (sc.next()) {
case "sw":
return "sw";
case "yd":
return "yd";
case "ed":
return "ed";
default:
System.out.println("请重新输入您要选择的坐席级别");
}
}
}
String validSeat() {
Scanner sc = new Scanner(System.in);
while (true) {
switch (sc.next()) {
case "rw":
return "rw";
case "yw":
return "yw";
case "yz":
return "yz";
default:
System.out.println("请重新输入您要选择的坐席级别");
}
}
}
String getStation() {
String[] province = {
"广东省", "河南省","吉林省", "辽宁省", "黑龙江省", "江苏省", "浙江省", "安徽省",
"福建省", "江西省", "山东省", "山西省", "湖北省", "湖南省","河北省", "海南省", "四川省",
"贵州省", "云南省", "陕西省", "甘肃省", "青海省", "广西省", "宁夏", "行政/直辖", "西藏", "内蒙古", "新疆维吾尔"};
System.out.println("\n**************选择省份/直辖市*************");
for (int i = 0; i < province.length; i++) {
System.out.print("(" + (i + 1) + ")" + province[i] + "\t");
if ((i + 1) % 5 == 0) {
System.out.println("");
}
}
// 输入的是几就给他展示多少，然后记得返回地址就行
ArrayList<String> city = new ArrayList<>();
switch (validIntegerIn(28)) {
case 1:
String[] guangdong = {
"广州","深圳","福田", "肇庆", "东莞", "佛山", "雷州", "茂名", "南江口", "南雄",
"湛江", "韶关", "坪石", "源潭", "湛江", "潮汕", "虎门"};
city.addAll(Arrays.asList(guangdong));
break;
case 2:
String[] 河南 = {
"灵宝", "洛阳", "南阳", "信阳", "商丘", "许昌", "郑州"};
city.addAll(Arrays.asList(河南));
break;
case 3:
String[] jilin = {
"长春", "吉林"};
city.addAll(Arrays.asList(jilin));
break;
case 4:
String[] liaoning = {
"大连", "盖州", "金州", "锦州", "沈阳", "铁岭"};
city.addAll(Arrays.asList(liaoning));
break;
case 5:
String[] 黑龙江 = {
"哈尔滨", "佳木斯", "绥化", ""};
city.addAll(Arrays.asList(黑龙江));
break;
case 6:
String[] jiangsu = {
"南京"};
city.addAll(Arrays.asList(jiangsu));
break;
case 7:
String[] 浙江 = {
"海宁", "杭州", "嘉善", "金华", "义乌", "诸暨"};
city.addAll(Arrays.asList(浙江));
break;
case 8:
String[] anhui = {
"合肥","亳州"};
city.addAll(Arrays.asList(anhui));
break;
case 9:
String[] fujian = {
"福州", "莆田", "泉州", "厦门"};
city.addAll(Arrays.asList(fujian));
break;
case 10:
String[] jiangxi = {
"大余", "赣州", "吉安", "井冈山", "九江", "南昌", "上饶"};
city.addAll(Arrays.asList(jiangxi));
break;
case 11:
String[] shandong = {
"菏泽", "聊城"};
city.addAll(Arrays.asList(shandong));
break;
case 12:
String[] shanxi = {
"大同"};
city.addAll(Arrays.asList(shanxi));
break;
case 13:
String[] hubei = {
"定州", "衡水", "武汉", "襄阳", "咸宁", "武昌", "赤壁"};
city.addAll(Arrays.asList(hubei));
break;
case 14:
String[] hunan = {
"安江", "长沙", "郴州", "洞口", "衡阳", "隆回", "娄底", "邵阳", "湘潭",
"芷江", "岳阳"};
city.addAll(Arrays.asList(hunan));
break;
case 15:
String[] 河北 = {
"保定", "定州", "邯郸", "秦皇", "任丘", "山海关", "张家口", "石家庄"};
city.addAll(Arrays.asList(河北));
break;
case 16:
String[] hainan = {
"东方", "海口", "三亚"};
city.addAll(Arrays.asList(hainan));
break;
case 17:
String[] sichuan = {
"成都", "广元", "乐山", "南充", "唐山", "宜宾"};
city.addAll(Arrays.asList(sichuan));
break;
case 18:
String[] 贵州 = {
"安顺", "贵阳", "凯里", "铜仁"};
city.addAll(Arrays.asList(贵州));
break;
case 19:
String[] yunnan = {
"六盘水"};
city.addAll(Arrays.asList(yunnan));
break;
case 20:
String[] 陕西 = {
"宝鸡", "西安", "渭南"};
city.addAll(Arrays.asList(陕西));
break;
case 21:
String[] 甘肃 = {
"安顺", "嘉峪关", "金昌", "兰州", "柳园", "陇南", "天水", "武威", "张掖"};
city.addAll(Arrays.asList(甘肃));
break;
case 22:
String[] 青海 = {
"西宁"};
city.addAll(Arrays.asList(青海));
break;
case 23:
String[] 广西 = {
"桂林", "贵港", "南宁", "平南", "梧州", "玉林"};
city.addAll(Arrays.asList(广西));
break;
case 24:
String[] 宁夏 = {
"格尔木", "安多"};
city.addAll(Arrays.asList(宁夏));
break;
case 25:
String[] Municipality = {
"北京", "天津", "上海", "重庆", "涪陵", "秀山", "武隆"};
city.addAll(Arrays.asList(Municipality));
break;
case 26:
String[] 新疆 = {
"德令哈", "格尔木", "哈密", "安多", "吐鲁番", "乌鲁木齐"};
city.addAll(Arrays.asList(新疆));
break;
case 27:
String[] 西藏 = {
"拉萨", "那曲"};
city.addAll(Arrays.asList(西藏));
break;
case 28:
String[] 内蒙古 = {
"集宁"};
city.addAll(Arrays.asList(内蒙古));
break;
}
for (int i = 0; i < city.size(); i++) {
System.out.print("(" + (i + 1) + ")" + city.get(i) + "市(县)\t");
if ((i + 1) % 5 == 0) {
System.out.println("");
}
}
return city.get(validInteger() - 1);
}
// public static void main(String[] args) {
// ScannerTools sc = new ScannerTools();
// sc.getStation();
// }
}
【JDBC】ScannerTools类：校验输入
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转载自blog.csdn.net/weixin_43801418/article/details/112910809
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