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优化代码

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ZhouXY108
2024-05-28 09:38:59 +08:00
parent 48bd4f1b31
commit 47eea5fc09
2 changed files with 53 additions and 16 deletions
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51
src/main/java/xyz/zhouxy/plusone/commons/util/RandomTools.java
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@@ -1,17 +1,16 @@
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 final SecureRandom DEFAULT_SECURE_RANDOM = new SecureRandom();
public static String randomStr(char[] sourceCharacters, int length) {
return randomStr(ThreadLocalRandom.current(), sourceCharacters, length);
}
public static final String CAPITAL_LETTERS = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
public static final String LOWERCASE_LETTERS = "abcdefghijklmnopqrstuvwxyz";
public static final String NUMBERS = "0123456789";
/**
* 使用传入的随机数生成器，生成指定长度的字符串
@@ -24,10 +23,48 @@ public final class RandomTools {
* @return 随机字符串
*/
public static String randomStr(Random random, char[] sourceCharacters, int length) {
char[] result = new char[length];
final char[] result = new char[length];
for (int i = 0; i < length; i++) {
result[i] = sourceCharacters[random.nextInt(sourceCharacters.length)];
}
return String.valueOf(result);
}
public static String randomStr(char[] sourceCharacters, int length) {
return randomStr(ThreadLocalRandom.current(), sourceCharacters, length);
}
public static String secureRandomStr(char[] sourceCharacters, int length) {
return randomStr(DEFAULT_SECURE_RANDOM, 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, String sourceCharacters, int length) {
final char[] result = new char[length];
for (int i = 0; i < length; i++) {
result[i] = sourceCharacters.charAt(random.nextInt(sourceCharacters.length()));
}
return String.valueOf(result);
}
public static String randomStr(String sourceCharacters, int length) {
return randomStr(ThreadLocalRandom.current(), sourceCharacters, length);
}
public static String secureRandomStr(String sourceCharacters, int length) {
return randomStr(DEFAULT_SECURE_RANDOM, sourceCharacters, length);
}
private RandomTools() {
throw new IllegalStateException("Utility class");
}
}