org.noear.marsh.uadmin.utils.RandomUtils Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of marsh.uadmin Show documentation

Java project for marsh.uadmin

The newest version!

package org.noear.marsh.uadmin.utils;

import java.util.Random;

/**
 * @author noear 2022/11/21 created
 */

public class RandomUtils {
    public static String code(int size) {
        char codeTemplate[] = {
                'a', 'b', 'c', 'd', 'e', 'f',
                'g', 'h', 'j', 'k',
                'm', 'n', 'p', 'q', 'r',
                's', 't', 'u', 'v', 'w', 'x',
                'y', 'z',
                'A', 'B', 'C', 'D', 'E', 'F',
                'G', 'H', 'J', 'K', 'L',
                'M', 'N', 'P', 'Q', 'R',
                'S', 'T', 'U', 'V', 'W', 'X',
                'Y', 'Z',
                '2', '3', '4', '5',
                '6', '7', '8', '9'
        };
        int temp_size = codeTemplate.length;

        StringBuilder sb = new StringBuilder();
        Random random = new Random();
        for (int i = 0; i < size; i++) {
            sb.append(codeTemplate[random.nextInt(temp_size) % temp_size]);
        }

        return sb.toString();
    }

    public static String codeExt(int size) {
        char codeTemplate[] = {
                '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'
        };
        int temp_size = codeTemplate.length;

        StringBuilder sb = new StringBuilder();
        Random random = new Random();
        for (int i = 0; i < size; i++) {
            sb.append(codeTemplate[random.nextInt(temp_size) % temp_size]);
        }

        return sb.toString();
    }
}