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EnnengYangEnnengYang
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Tools
//生成六位随机数验证码 //检测字符串是否不为null 或 "" //检测字符串是否为null 或 "" //字符串转化为字符串数组 //用默认的分隔符(,)将字符串转换为字符串数组 //按照指定格式，日期转为字符串 //按照yyyy-MM-dd HH:mm:ss的格式，日期转字符串 //按照yyyy-MM-dd HH:mm:ss的格式，字符串转日期 //把时间根据时、分、秒转换为时间段 //写txt里的单行内容 //验证邮箱 //验证手机号码 //检测KEY是否正确 //读取txt里的单行内容
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‎Tools.java‎

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package com.fh.util;
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import java.io.*;
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import java.text.ParseException;
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import java.text.SimpleDateFormat;
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import java.util.Date;
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import java.util.Random;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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/**
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* DateTime: 2016/9/19 21:43
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* 功能：工具类
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* 思路：
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*/
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public class Tools {
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//测试
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public static void main(String[] args) {
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System.out.println(getRandomNum());
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System.out.println(notEmpty(""));
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System.out.println(str2StrArray("abc,def,hig")[0]);
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System.out.println(date2Str(new Date()));
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Date old=new Date();
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try {
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Thread.sleep(10000);
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} catch ( InterruptedException e ) {
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e.printStackTrace();
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}
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System.out.println(getTimes(date2Str(old)));
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}
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//生成六位随机数验证码
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public static int getRandomNum(){
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Random r=new Random();
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return r.nextInt(900000)+100000;
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}
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//检测字符串是否不为null 或 ""
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public static boolean notEmpty(String s){
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return s!=null && !"".equals(s) && !"null".equals(s);
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}
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//检测字符串是否为null 或 ""
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public static boolean isEmpty(String s){
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return s==null || "".equals(s) || "null".equals(s);
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}
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//字符串转化为字符串数组
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public static String[] str2StrArray(String str,String splitRegex){
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if(isEmpty(str)){
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return null;
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}
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return str.split(splitRegex);
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}
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//用默认的分隔符(,)将字符串转换为字符串数组
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public static String[] str2StrArray(String str){
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return str2StrArray(str,",\\s*");
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}
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//按照指定格式，日期转为字符串
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public static String date2Str(Date date,String format){
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if(null!=date){
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SimpleDateFormat sdf=new SimpleDateFormat(format);
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return sdf.format(date);
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}else return "";
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}
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//按照yyyy-MM-dd HH:mm:ss的格式，日期转字符串
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public static String date2Str(Date date){
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return date2Str(date,"yyyy-MM-dd HH:mm:ss");
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}
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//按照yyyy-MM-dd HH:mm:ss的格式，字符串转日期
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public static Date str2Date(String str){
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if(notEmpty(str)){
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SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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try {
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return sdf.parse(str);
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} catch ( ParseException e ) {
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e.printStackTrace();
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}
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return new Date();
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}else return null;
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}
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//把时间根据时、分、秒转换为时间段
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public static String getTimes(String strDate){
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String resultTimes="";
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SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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Date now;
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try {
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now = new Date(); //现在时间
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Date date = sdf.parse(strDate); //传入时间
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long times = now.getTime()-date.getTime();
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long day = times/(24*60*60*1000);
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long hour = (times/(60*60*1000)-day*24);
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long min = ((times/(60*1000))-day*24*60-hour*60);
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long sec = (times/1000-day*24*60*60-hour*60*60-min*60);
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StringBuffer sb=new StringBuffer();
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if(hour>0){
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sb.append(hour+"小时前");
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}else if(min>0){
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sb.append(min+"分钟前");
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}else {
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sb.append(sec+"秒前");
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}
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resultTimes=sb.toString();
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} catch ( ParseException e ) {
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e.printStackTrace();
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}
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return resultTimes;
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}
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//写txt里的单行内容
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public static void writeFile(String fileP,String content){
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String filePath=String.valueOf(Thread.currentThread().getContextClassLoader().getResource(""))+"../../"; //项目路径
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filePath=(filePath.trim()+fileP.trim()).substring(6).trim();
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if(filePath.indexOf(":")!=1){
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filePath= File.separator+filePath;
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}
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try {
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OutputStreamWriter write=new OutputStreamWriter(new FileOutputStream(filePath),"utf-8");
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BufferedWriter writer=new BufferedWriter(write);
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writer.write(content);
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writer.close();
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} catch ( FileNotFoundException e ) {
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e.printStackTrace();
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} catch ( UnsupportedEncodingException e ) {
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e.printStackTrace();
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} catch ( IOException e ) {
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e.printStackTrace();
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}
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}
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//验证邮箱
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public static boolean checkEmail(String email){
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boolean flag=false;
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try {
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String check = "^([a-z0-9A-Z]+[-|_|\\.]?)+[a-z0-9A-Z]@([a-z0-9A-Z]+(-[a-z0-9A-Z]+)?\\.)+[a-zA-Z]{2,}$";
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Pattern regex=Pattern.compile(check);
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Matcher matcher=regex.matcher(email);
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flag=matcher.matches();
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}catch ( Exception e ){
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flag=false;
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}
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return flag;
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}
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//验证手机号码
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public static boolean checkMobileNumber(String mobileNumber){
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boolean flag=false;
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try {
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Pattern regex=Pattern.compile("^(((13[0-9])|(15([0-3]|[5-9]))|(18[0,5-9]))\\d{8})|(0\\d{2}-\\d{8})|(0\\d{3}-\\d{7})$");
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Matcher matcher=regex.matcher(mobileNumber);
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flag=matcher.matches();
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}catch ( Exception e ){
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flag=false;
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}
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return flag;
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}
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//检测KEY是否正确
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public static boolean checkKey(String paraname,String FKEY){
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paraname=(null==paraname)?"":paraname;
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return MD5.md5(paraname+DateUtil.getDays()+",fh,").equals(FKEY);
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}
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//读取txt里的单行内容
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public static String readTxtFile(String fileP){
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try {
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String filePath=String.valueOf(Thread.currentThread().getContextClassLoader().getResource(""))+"../../";//项目路径
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filePath=filePath.replaceAll("file:/", "");
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filePath=filePath.replaceAll("%20", " ");
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filePath=filePath.trim()+fileP.trim();
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if(filePath.indexOf(":")!=1){
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filePath=File.separator+filePath;
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}
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String encoding="utf-8";
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File file=new File(filePath);
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if(file.isFile() && file.exists()){ //判断文件是否存在
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InputStreamReader read=new InputStreamReader(new FileInputStream(file),encoding); // 考虑到编码格式
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BufferedReader bufferedReader=new BufferedReader(read);
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String lineTxt=null;
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while ( (lineTxt=bufferedReader.readLine())!=null ){
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return lineTxt;
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}
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read.close();
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}else {
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System.out.println("找不到指定的文件,查看此路径是否正确:"+filePath);
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}
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} catch ( FileNotFoundException e ) {
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e.printStackTrace();
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} catch ( UnsupportedEncodingException e ) {
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e.printStackTrace();
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} catch ( IOException e ) {
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e.printStackTrace();
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}
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return "";
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}
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}

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