epmet-cloud-rizhao0920/epmet-auth/src/main/java/com/epmet/StringRandomUtils.java

package com.epmet;

import com.epmet.commons.tools.constant.StrConstant;

/**
 * desc:随机生成字母
 *
 * @author: LiuJanJun
 * @date: 2022/3/1 5:16 下午
 * @version: 1.0
 */
public class StringRandomUtils {

    public static String getRandomStr(int length){
        String result = StrConstant.EPMETY_STR;
        //小写字母范围: 97～122
        for (int i = 0; i < length; i++) {
                int randomNumber = 97 + (int) (Math.random()* (122+1-97));
                result +=   (char)randomNumber;
        }
        return result;
    }

    public static void main(String[] args) {
        StringRandomUtils test = new StringRandomUtils();
        //测试
        for (int i = 0; i < 1000000; i++) {
            System.out.println(getRandomStr(5));
        }
    }

}