/**
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* Copyright (c) 2018 人人开源 All rights reserved.
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*
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* https://www.renren.io
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*
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* 版权所有，侵权必究！
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*/
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package com.zt.security.service;
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import com.wf.captcha.ArithmeticCaptcha;
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import com.zt.common.utils.CacheUtils;
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import org.springframework.stereotype.Service;
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import javax.servlet.http.HttpServletResponse;
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import java.io.IOException;
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/**
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* 验证码
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*
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* @author Mark sunlightcs@gmail.com
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*/
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@Service
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public class CaptchaService {
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/**
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* 图片验证码
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*/
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public void create(HttpServletResponse response, String uuid) throws IOException {
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response.setContentType("image/gif");
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response.setHeader("Pragma", "No-cache");
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response.setHeader("Cache-Control", "no-cache");
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response.setDateHeader("Expires", 0);
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// 生成验证码
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ArithmeticCaptcha captcha = new ArithmeticCaptcha(150, 40);
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captcha.setLen(2);
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captcha.getArithmeticString();
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captcha.out(response.getOutputStream());
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// 保存到缓存
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CacheUtils.put("captchaCache", uuid, captcha.text());
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}
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/**
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* 验证码效验
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*
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* @param uuid
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* uuid
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* @param code
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* 验证码
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* @return true：成功 false：失败
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*/
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public boolean validate(String uuid, String code) {
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// 获取验证码
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String captcha = (String) CacheUtils.get("captchaCache", uuid);
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// 效验成功
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if (code.equalsIgnoreCase(captcha)) {
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return true;
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}
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return false;
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}
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}
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