生成随机密码带特殊字符数字大小写字母

import java.util.Random;

/**
 * @author aijinqiang
 * @create 2022/5/25 16:54
 */
public class Test {
    public static void main(String[] args) {
        String randomPassword = getRandomPassword(10);
        System.out.println(randomPassword);
    }

    /**
     * 随机密码生成(包含大写字母、小写字母、数字、特殊符号至少一位)
     * @param len 长度
     * @return
     */
    public static String getRandomPassword(int len){
        String str = null;
        char charr[] = "abcdefghjkmnprstuvwxyzABCDEFGHJKMNPQRST2345678~!@#$%^&*-+=:;<>,?/".toCharArray();
        StringBuilder sb = new StringBuilder();
        Random r = new Random();

        for (int x = 0; x < len; ++x) {
            sb.append(charr[r.nextInt(charr.length)]);
        }
        str = sb.toString();

        String pattern1 = ".*[a-z]+.*";
        String pattern2 = ".*[A-Z]+.*";
        String pattern3 = ".*[0-9]+.*";
        String pattern4 = ".*[~!@#$%^&*+=:;<>,?/]+.*";

        if (!(str.matches(pattern1) && str.matches(pattern2) &&
                str.matches(pattern3) && str.matches(pattern4))) {

            str = getRandomPassword(len);
        }

        return str;
    }

}