plusone/plusone-commons
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重构。

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This commit is contained in:
zhouxy108 2024-04-16 21:04:08 +08:00
parent d2d760e866
commit b9d4901b67
1 changed files with 18 additions and 3 deletions
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21
src/main/java/xyz/zhouxy/plusone/commons/util/RandomTools.java
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@ -1,14 +1,29 @@
package xyz.zhouxy.plusone.commons.util;
import java.security.SecureRandom;
import java.util.Random;
import java.util.concurrent.ThreadLocalRandom;
public final class RandomTools {
private RandomTools() {
throw new IllegalStateException("Utility class");
}
public static String secureRandomStr(char[] sourceCharacters, int length) {
SecureRandom random = new SecureRandom();
public static String randomStr(char[] sourceCharacters, int length) {
return randomStr(ThreadLocalRandom.current(), sourceCharacters, length);
}
/**
* 使用传入的随机数生成器，生成指定长度的字符串
*
* @param random 随机数生成器。根据需要可以传入
* {@link java.util.concurrent.ThreadLocalRandom}、{@link java.security.SecureRandom}
* 等，不为空
* @param sourceCharacters 字符池。字符串的字符将在数组中选，不为空
* @param length 字符串长度
* @return 随机字符串
*/
public static String randomStr(Random random, char[] sourceCharacters, int length) {
char[] result = new char[length];
for (int i = 0; i < length; i++) {
result[i] = sourceCharacters[random.nextInt(sourceCharacters.length)];