package com.szxgl.vote2021.controller;


import com.szxgl.vote2021.utils.RedisUtil;
import com.szxgl.vote2021.utils.VerifyUtil;
import lombok.extern.java.Log;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

@Slf4j
@RestController
@RequestMapping("/code")
public class VerificationCodeController {

    public static final String RANDOMCODEKEY= "RANDOMREDISKEY";//放到session中的key

    @Autowired
    private RedisUtil redisUtil;
    /**
     * @author XXXXXX
     * @date 2018年7月11日
     * @desc 图形验证码生成
     */
    @RequestMapping("/createImg")
    public void createImg(HttpServletRequest request, HttpServletResponse response) throws Exception {
        try {
            response.setContentType("image/jpeg");//设置相应类型,告诉浏览器输出的内容为图片
            response.setHeader("Pragma", "No-cache");//设置响应头信息，告诉浏览器不要缓存此内容
            response.setHeader("Cache-Control", "no-cache");
            response.setDateHeader("Expire", 0);
            VerifyUtil randomValidateCode = new VerifyUtil();
            randomValidateCode.getRandcode(request, response);//输出验证码图片
            //将生成的随机验证码存放到redis中
            redisUtil.set(RANDOMCODEKEY,request.getSession().getAttribute(RANDOMCODEKEY),Long.parseLong("60"));
        }catch (Exception e){
            log.error("获取验证码异常：", e);
        }
    }
}