模拟手机号工具类

package com.ai.jf.acct.util;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * created by hezy6 on 2019/10/12
 * 

 * 此工具类用于模拟手机号
 */
public class AnalogPhoneUtil {

    private static final Logger logger = LoggerFactory.getLogger(AnalogPhoneUtil.class);

    private AnalogPhoneUtil() {
    }

    public static String login(String value) {
        //将输入的值取hashcode
        int hashCode = value.hashCode();
        //取绝对值
        int abs = Math.abs(hashCode);
        logger.info("hashcode值为:{}", hashCode);
        logger.info("abs的值为:{}",abs);
        //将int转换成字符串
        StringBuilder sb = new StringBuilder(String.valueOf(abs));
        //获取字符串长度
        int length = sb.length();
        //如果字符串长度<=10,将1+缺位个数补0+字符串长度就是模拟的手机号
        if (length <= 10) {
            for (int i = 0; i < (10 - length); i++) {
                sb.insert(0, "0");
            }
            sb.insert(0, "1");
            //如果字符串长度>10,就截取字符串的10位,在前面插入1就是模拟的手机号
        } else {
            sb.insert(0, "1").substring(0, 11);
        }
        String phone = sb.toString();
        logger.info("模拟的手机号为:{}", phone);
        return phone;
    }

    public static void main(String[] args){
        String requestId = "122311111111";
        String phone = AnalogPhoneUtil.login(requestId);
        logger.info("AnalogPhoneUtil----{}", phone);
    }

}