基于java的旅游系统旅游网

package com.cn.travel.utils; import java.util.UUID; import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStreamReader; import java.io.OutputStreamWriter; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Date; import java.util.Random; import java.util.regex.Matcher; import java.util.regex.Pattern; /** * 说明：常用工具 * * * @version */ public class Tools { /** * 随机生成六位数验证码 * @return */ public static int getRandomNum(){ Random r = new Random(); return r.nextInt(900000)+100000;//(Math.random()*(999999-100000)+100000) } /** * 检测字符串是否不为空(null,"","null") * @param s * @return 不为空则返回true，否则返回false */ public static boolean notEmpty(String s){ return s!=null && !"".equals(s) && !"null".equals(s); } /** * 检测字符串是否不为空(null,"","null") * @param s * @return 不为空则返回true，否则返回false */ public static boolean notEmpty(Object s){ return s!=null && !"".equals(s) && !"null".equals(s); } /** * 检测字符串是否为空(null,"","null") * @param s * @return 为空则返回true，不否则返回false */ public static boolean isEmpty(String s){ return s==null || "".equals(s) || "null".equals(s); } /** * 检测字符串是否为空(null,"","null") * @param s * @return 为空则返回true，不否则返回false */ public static boolean isEmpty(Object s){ return s==null || "".equals(s) || "null".equals(s); } /** * 字符串转换为字符串数组 * @param str 字符串 * @param splitRegex 分隔符 * @return */ public static String[] str2StrArray(String str,String splitRegex){ if(isEmpty(str)){ return null; } return str.split(splitRegex); } /** * 用默认的分隔符(,)将字符串转换为字符串数组 * @param str 字符串 * @return */ public static String[] str2StrArray(String str){ return str2StrArray(str,",\\s*"); } /** * 按照yyyy-MM-dd HH:mm:ss的格式，日期转字符串 * @param date * @return yyyy-MM-dd HH:mm:ss */ public static String date2Str(Date date){ return date2Str(date,"yyyy-MM-dd HH:mm:ss"); } /** * 按照yyyy-MM-dd HH:mm:ss的格式，字符串转日期 * @param date * @return */ public static Date str2Date(String date){ if(notEmpty(date)){ SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); try { return sdf.parse(date); } catch (ParseException e) { e.printStackTrace(); } return new Date(); }else{ return null; } } /** * 按照参数format的格式，日期转字符串 * @param date * @param format * @return */ public static String date2Str(Date date,String format){ if(date!=null){ SimpleDateFormat sdf = new SimpleDateFormat(format); return sdf.format(date); }else{ return ""; } } /** * 把时间根据时、分、秒转换为时间段 * @param StrDate */ public static String getTimes(String StrDate){ String resultTimes = ""; SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); Date now; try { now = new Date(); Date date=df.parse(StrDate); long times = now.getTime()-date.getTime(); long day = times/(24*60*60*1000); long hour = (times/(60*60*1000)-day*24); long min = ((times/(60*1000))-day*24*60-hour*60); long sec = (times/1000-day*24*60*60-hour*60*60-min*60); StringBuffer sb = new StringBuffer(); //sb.append("发表于："); if(hour>0 ){ sb.append(hour+"小时前"); } else if(min>0){ sb.append(min+"分钟前"); } else{ sb.append(sec+"秒前"); } resultTimes = sb.toString(); } catch (ParseException e) { e.printStackTrace(); } return resultTimes; } /** * 写txt里的单行内容 * @param fileP 文件路径 * @param content 写入的内容 */ public static void writeFile(String fileP,String content){ String filePath = String.valueOf(Thread.currentThread().getContextClassLoader().getResource(""))+"../../"; //项目路径 filePath = (filePath.trim() + fileP.trim()).substring(6).trim(); if(filePath.indexOf(":") != 1){ filePath = File.separator + filePath; } try { OutputStreamWriter write = new OutputStreamWriter(new FileOutputStream(filePath),"utf-8"); BufferedWriter writer=new BufferedWriter(write); writer.write(content); writer.close(); } catch (IOException e) { e.printStackTrace(); } } /** * 验证邮箱 * @param email * @return */ public static boolean checkEmail(String email){ boolean flag = false; try{ String check = "^([a-z0-9A-Z]+[-|_|\\.]?)+[a-z0-9A-Z]@([a-z0-9A-Z]+(-[a-z0-9A-Z]+)?\\.)+[a-zA-Z]{2,}$"; Pattern regex = Pattern.compile(check); Matcher matcher = regex.matcher(email); flag = matcher.matches(); }catch(Exception e){ flag = false; } return flag; } /** * 验证手机号码 * @param mobileNumber * @return */ public static boolean checkMobileNumber(String mobileNumber){ boolean flag = false; try{ Pattern regex = Pattern.compile("^1[3|4|5|7|8][0-9]{9}$"); Matcher matcher = regex.matcher(mobileNumber); flag = matcher.matches(); }catch(Exception e){ flag = false; } return flag; } /** * 读取txt里的单行内容 * @param fileP 文件路径 */ public static String readTxtFile(String fileP) { try { String filePath = String.valueOf(Thread.currentThread().getContextClassLoader().getResource(""))+"../../"; //项目路径 filePath = filePath.replaceAll("file:/", ""); filePath = filePath.replaceAll("%20", " "); filePath = filePath.trim() + fileP.trim(); if(filePath.indexOf(":") != 1){ filePath = File.separator + filePath; } String encoding = "utf-8"; File file = new File(filePath); if (file.isFile() && file.exists()) { // 判断文件是否存在 InputStreamReader read = new InputStreamReader( new FileInputStream(file), encoding); // 考虑到编码格式 BufferedReader bufferedReader = new BufferedReader(read); String lineTxt = null; while ((lineTxt = bufferedReader.readLine()) != null) { return lineTxt; } read.close(); }else{ System.out.println("找不到指定的文件,查看此路径是否正确:"+filePath); } } catch (Exception e) { System.out.println("读取文件内容出错"); } return ""; } /** * 校验字符串是否为数字 * @param str * @return */ public static boolean isNumeric(String str){ Pattern pattern = Pattern.compile("[0-9.]*"); Matcher isNum = pattern.matcher(str); if( !isNum.matches() ){ return false; } return true; } /** * 自动生成32位的UUid，对应数据库的主键id进行插入用。 * @return */ public static String getUUID() { return UUID.randomUUID().toString().replace("-", ""); } public static void main(String[] args) { System.out.println(getRandomNum()); } }