com.seejoke.wechat.util.RandomUtils Maven / Gradle / Ivy
package com.seejoke.wechat.util;
public class RandomUtils {
private static final String RANDOM_STR = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
private static final java.util.Random RANDOM = new java.util.Random();
public static String getRandomStr(int num) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < num; i++) {
sb.append(RANDOM_STR.charAt(RANDOM.nextInt(RANDOM_STR.length())));
}
return sb.toString();
}
}