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com.blade.jdbc.utils.UUIDUtils Maven / Gradle / Ivy
package com.blade.jdbc.utils;
import java.util.UUID;
public class UUIDUtils {
public static String[] chars = new String[] { "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", "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" };
/**
* 生成指定长度的uuid
*/
private static String getUUID(int length, UUID uuid) {
int groupLength = 32 / length;
StringBuilder sb = new StringBuilder();
String id = uuid.toString().replace("-", "");
for (int i = 0; i < length; i++) {
String str = id.substring(i * groupLength, i * groupLength + groupLength);
int x = Integer.parseInt(str, 16);
sb.append(chars[x % 0x3E]);
}
return sb.toString();
}
/**
* 16位UUID
*/
public static String getUUID16() {
return getUUID(16, UUID.randomUUID());
}
}
