package com.example.demo111;

import cn.hutool.extra.qrcode.QrCodeUtil;
import cn.hutool.extra.qrcode.QrConfig;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.imageio.ImageIO;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.util.UUID;

@RestController
@Api(value = "TestController ", description = "XXX管理")
@RequestMapping("/TestController ")
public class TestController {

@Autowired
   private RedisUtils redisUtils;


   /**
    * Qr
    * @param
    */
   @ApiOperation(value = "Qr")
   @GetMapping("/Qr")
   public void Qr(HttpServletResponse response){
       QrConfig config = new QrConfig(300, 300);
       // 设置边距,既二维码和背景之间的边距
       config.setMargin(3);
       // 高纠错级别
       config.setErrorCorrection(ErrorCorrectionLevel.H);
       // 设置前景色,既二维码颜色(青色)
       config.setForeColor(new Color(0,60,130).getRGB());
// 设置背景色(灰色)
       config.setBackColor(new Color(242,242,242).getRGB());

String uuid=UUID.randomUUID().toString();
       redisUtils.set(uuid, uuid, 100);
       String uuidValue=String.valueOf(redisUtils.get(uuid));
       BufferedImage bufferedImage = QrCodeUtil.generate(//
               "http://XXXXXXX:8080/TestController/chekRedisValue?uuid="+uuid, //二维码内容
               config
       );

try {
           //以JPEG格式向客户端发送
           ServletOutputStream os = response.getOutputStream();
           ImageIO.write(bufferedImage, "PNG",os);
           os.flush();
           os.close();
       } catch (IOException e) {
           e.printStackTrace();
       }

}

@ApiOperation(value = "检测二维码是否过期")
   @GetMapping("/chekRedisValue")
   public ResultJson