package com.etrash.util;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.time.Instant;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.format.DateTimeFormatter;
import java.util.Calendar;
import java.util.Date;
import java.util.Random;
import org.apache.commons.lang3.StringUtils;
public class Utility
{
public static final String DATETIMEPATTERN_NORMAL = "yyyy-MM-dd HH:mm:ss";
public static final String DATETIMEPATTERN_ISO = "yyyyMMdd‘T‘HHmmss+08";
public static final String DATETIMEPATTERN_TIGHT = "yyyyMMddHHmmss";
public static final String DATETIMEPATTERN_SIMPLE = "MM-dd HH:mm";
public static final String DATEPATTERN_NORMAL = "yyyy-MM-dd";
public static final String DATEPATTERN_TIGHT = "yyyyMMdd";
public static final String TIMEPATTERN_NORMAL = "HH:mm:ss";
public static final String TIMEPATTERN_HOURMIN = "HH:mm";
public static final String DATEPATTERN_DATE = "MM-dd";
/**
* 将时间日期转换为字符串
* @param source 时间日期对象
* @param pattern 模式
* @return
/
public static String localDateTimeToString(LocalDateTime source, String pattern)
{
DateTimeFormatter formatter = DateTimeFormatter.ofPattern(pattern);
return source.format(formatter);
}
/*
* 将日期转换为字符串
* @param source
* @param pattern
* @return
/
public static String localDateToString(LocalDate source, String pattern)
{
DateTimeFormatter formatter = DateTimeFormatter.ofPattern(pattern);
return source.format(formatter);
}
/*
* 时间转LocalDateTime
* @param date
* @return
/
public static LocalDateTime dateToLocalDateTime(Date date)
{
if(date == null)
return null;
Instant instant = Instant.ofEpochMilli(date.getTime());
ZoneId zone = ZoneId.of("Asia/Shanghai");
LocalDateTime result = LocalDateTime.ofInstant(instant, zone);
return result;
}
/*
* 将字符串日期时间转换为时间日期
* @param source
* @param pattern
* @return
/
public static LocalDateTime stringToLocalDateTime(String source, String pattern)
{
DateTimeFormatter formatter = DateTimeFormatter.ofPattern(pattern);
return LocalDateTime.parse(source, formatter);
}
/*
* 将字符串日期转换为日期
* @param source
* @param pattern
* @return
/
public static LocalDate stringToLocalDate(String source, String pattern)
{
DateTimeFormatter formatter = DateTimeFormatter.ofPattern(pattern);
return LocalDate.parse(source, formatter);
}
/*
* 将开始结束日期转换为日期区间字符串
* @param start
* @param end
* @return
/
public static String localDateRangeToString(LocalDate start, LocalDate end)
{
DateTimeFormatter formatter = DateTimeFormatter.ofPattern(DATEPATTERN_NORMAL);
return start.format(formatter)+" ~ "+end.format(formatter);
}
/*
* 获取随机串
* @param len 长度
* @return
/
public static String getRandomStr(int len)
{
String base = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
Random random = new Random();
StringBuffer sb = new StringBuffer();
for (int i = 0; i < len; i++) {
int number = random.nextInt(base.length());
sb.append(base.charAt(number));
}
return sb.toString();
}
/*
* 获取异或累加值
* @param src
* @return
/
public static byte getXorAccumulation(byte[] src)
{
if(src == null || src.length == 0)
return 0x00;
byte xor = 0;
for(int i=0;i<src.length;i++)
{
xor ^= src[i];
}
return xor;
}
/*
* 获取MD5密码（已过时）
* 使用DigestUtils.md5Hex()替代
* 需导入包commons-codec
* @param plainText
* @return
/
@Deprecated
public static String getMd5(String plainText)
{
try {
MessageDigest md = MessageDigest.getInstance("MD5");
md.update(plainText.getBytes());
byte b[] = md.digest();
int i;
StringBuffer buf = new StringBuffer("");
for (int offset = 0; offset < b.length; offset++) {
i = b[offset];
if (i < 0)
i += 256;
if (i < 16)
buf.append("0");
buf.append(Integer.toHexString(i));
}
//32位加密
return buf.toString();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
return null;
}
}
/*
* 生成上传文件名
* @return
/
public static String genSerialFileName()
{
String timeStr = localDateTimeToString(LocalDateTime.now(), DATETIMEPATTERN_TIGHT);
return timeStr + getRandomStr(6);
}
/*
* 过滤Emoji表情
* @param source
* @return
/
public static String filterEmoji(String source)
{
if(StringUtils.isNotBlank(source)){
return source.replaceAll("[\ud800\udc00-\udbff\udfff\ud800-\udfff]", "");
}else{
return source;
}
}
/*
* 获取当月最大日期
* @return
/
public static int getMaximunDateOfCurrMonth()
{
// 获取Calendar
Calendar calendar = Calendar.getInstance();
// 设置日期为本月最大日期
calendar.set(Calendar.DATE, calendar.getActualMaximum(Calendar.DATE));
return calendar.get(Calendar.DAY_OF_MONTH);
}
/*
* Convert byte[] to hex string.这里我们可以将byte转换成int，然后利用Integer.toHexString(int)来转换成16进制字符串。
* @param src byte[] data
* @return hex string
/
public static String bytesToHexString(byte[] src){
StringBuilder stringBuilder = new StringBuilder("");
if (src == null || src.length <= 0) {
return null;
}
for (int i = 0; i < src.length; i++) {
int v = src[i] & 0xFF;
String hv = Integer.toHexString(v);
if (hv.length() < 2) {
stringBuilder.append(0);
}
stringBuilder.append(hv);
}
return stringBuilder.toString();
}
/*
* 将字节数组转换为十六进制可读串
* @param src
* @return
/
public static String bytesToReadableHexString(byte[] src){
StringBuilder stringBuilder = new StringBuilder("");
if (src == null || src.length <= 0) {
return null;
}
for (int i = 0; i < src.length; i++) {
int v = src[i] & 0xFF;
String hv = Integer.toHexString(v);
if (hv.length() < 2) {
stringBuilder.append(0);
}
stringBuilder.append(hv);
if(i < src.length - 1)
stringBuilder.append(" ");
}
return stringBuilder.toString();
}
/*
* 将byte单字节转换成十六进制字符串
* @param src
* @return
/
public static String byteToHexString(int src) {
StringBuilder ret = new StringBuilder();
int v = src & 0xFF;
String hv = Integer.toHexString(v);
if (hv.length() < 2) {
ret.append(0);
}
ret.append(hv);
return ret.toString();
}
/*
* Convert hex string to byte[]
* @param hexString the hex string
* @return byte[]
/
public static byte[] hexStringToBytes(String hexString) {
if (hexString == null || hexString.equals("")) {
return null;
}
hexString = hexString.toUpperCase();
int length = hexString.length() / 2;
char[] hexChars = hexString.toCharArray();
byte[] d = new byte[length];
for (int i = 0; i < length; i++) {
int pos = i * 2;
d[i] = (byte) (charToByte(hexChars[pos]) << 4 | charToByte(hexChars[pos + 1]));
}
return d;
}
/*
* Convert char to byte
* @param c char
* @return byte
/
private static byte charToByte(char c) {
return (byte) "0123456789ABCDEF".indexOf(c);
}
/*
* gbk转utf8有损转换
* @param gbkStr
* @return
/
public static byte[] getUTF8BytesFromGBKString(String gbkStr)
{
int n = gbkStr.length();
byte[] utfBytes = new byte[3 * n];
int k = 0;
for (int i = 0; i < n; i++) {
int m = gbkStr.charAt(i);
if (m < 128 && m >= 0) {
utfBytes[k++] = (byte) m;
continue;
}
utfBytes[k++] = (byte) (0xe0 | (m >> 12));
utfBytes[k++] = (byte) (0x80 | ((m >> 6) & 0x3f));
utfBytes[k++] = (byte) (0x80 | (m & 0x3f));
}
if (k < utfBytes.length) {
byte[] tmp = new byte[k];
System.arraycopy(utfBytes, 0, tmp, 0, k);
return tmp;
}
return utfBytes;
}
public static int getRandomInteger(int min, int max)
{
Random rand = new Random();
return rand.nextInt(max - min + 1) + min;
}
public static float getRandomFloat(int base)
{
Random rand = new Random();
return base + rand.nextFloat();
}
/*
* 经纬度校验(只校验正数 0-90.000000 0-180.000000 范围内)
* 经度longitude: (?:[0-9]|[1-9][0-9]|1[0-7][0-9]|180)\.([0-9]{6})
* 纬度latitude： (?:[0-9]|[1-8][0-9]|90)\.([0-9]{6})
* @return
*/
public static boolean checkItude(String longitude,String latitude){
String reglo = "((?:[0-9]|[1-9][0-9]|1[0-7][0-9])\.([0-9]{0,6}))|((?:180)\.([0]{0,6}))";
String regla = "((?:[0-9]|[1-8][0-9])\.([0-9]{0,6}))|((?:90)\.([0]{0,6}))";
longitude = longitude.trim();
latitude = latitude.trim();
return longitude.matches(reglo)==true?latitude.matches(regla):false;
}
}
原文：https://www.cnblogs.com/yang-21/p/14891568.html