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com.tmsps.ne4spring.utils.GenerateUtil Maven / Gradle / Ivy
package com.tmsps.ne4spring.utils;
import java.util.Random;
import java.util.UUID;
/**
* 生成工具
* @author zhangwei [email protected]
*
*/
public class GenerateUtil {
/**
* 72位随机散列数组
*/
static char strRandom72[] = { 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i',
'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v',
'w', 'x', 'y', 'z', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I',
'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V',
'W', 'X', 'Y', 'Z', '0', '1', '2', '3', '4', '5', '6', '7', '8',
'9', '!', '@', '#', '$', '-', '+', '[', ']', '{', '}' };
/**
* 62位随机散列集合
*/
static char strRandom62[] = { 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i',
'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v',
'w', 'x', 'y', 'z', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I',
'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V',
'W', 'X', 'Y', 'Z', '0', '1', '2', '3', '4', '5', '6', '7', '8',
'9' };
/**
* 生产UUID
*
* @return
*/
public static String getUUID() {
return java.util.UUID.randomUUID().toString();
}
public static String compressedUUID(UUID uuid) {
byte[] byUuid = new byte[16];
long least = uuid.getLeastSignificantBits();
long most = uuid.getMostSignificantBits();
long2bytes(most, byUuid, 0);
long2bytes(least, byUuid, 8);
String compressUUID = Base58.encode(byUuid);
return compressUUID;
}
protected static void long2bytes(long value, byte[] bytes, int offset) {
for (int i = 7; i > -1; i--) {
bytes[offset++] = (byte) ((value >> 8 * i) & 0xFF);
}
}
/**
* 根据长度参数生成密码（随机数）
*
* @param length
* @return
*/
public static String createPass(int length) {
if (length > strRandom62.length) {
length = strRandom62.length;
}
char[] chars = new char[length];
for (int i = 0; i < length; i++) {
chars[i] = strRandom62[new Random().nextInt(strRandom62.length)];
}
return new String(chars);
}
/**
* 默认生成8位密码
*
* @return
*/
public static String createPass() {
return GenerateUtil.createPass(8);
}
/**
* 获取N位随机数
*
* @param b
* @return
*/
public static String getRomNum(int b) {
Random random = new Random();
StringBuilder sb = new StringBuilder();
for (int i = 0; i < b; i++) {
sb.append(random.nextInt(10));
}
return sb.toString();
}
public static String getBase58ID() {
return compressedUUID(java.util.UUID.randomUUID());
}
public final static char[] digits = { '0', '1', '2', '3', '4', '5', '6',
'7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j',
'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
'x', 'y', 'z', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J',
'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
'X', 'Y', 'Z', '|', '#' };
public static String Dec2AnyHex(int dec, int shift) {
char[] buf = new char[32];
int charPos = 32;
int radix = 1 << shift;
int mask = radix - 1;
do {
buf[--charPos] = digits[dec & mask];
dec >>>= shift;
} while (dec != 0);
return new String(buf, charPos, (32 - charPos));
}
public static Integer AnyHex2Dec(String anyHex, int shift) {
char[] s = anyHex.toCharArray();
String digitsString = new String(digits);
int Num = 0;
for (int i = s.length; i > 0; i--) {
int j = digitsString.indexOf(s[i - 1]);
Num += j * Math.pow(1 << shift, s.length - i);
}
return Num;
}
public static synchronized String getShorId() {
try {
Thread.sleep(1);
} catch (InterruptedException e) {
e.printStackTrace();
}
return Dec2AnyHex((int) System.currentTimeMillis(), 6);
}
}
