ValidateCodeServiceImpl.java
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package cn.brotop.gateway.service.impl;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.util.concurrent.TimeUnit;
import javax.annotation.Resource;
import javax.imageio.ImageIO;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.FastByteArrayOutputStream;
import com.google.code.kaptcha.Producer;
import cn.brotop.common.core.constant.Constants;
import cn.brotop.common.core.exception.CaptchaException;
import cn.brotop.common.core.utils.IdUtils;
import cn.brotop.common.core.utils.StringUtils;
import cn.brotop.common.core.utils.sign.Base64;
import cn.brotop.common.core.web.domain.AjaxResult;
import cn.brotop.common.redis.service.RedisService;
import cn.brotop.gateway.service.ValidateCodeService;
/**
* 验证码实现处理
*
* @author 啊雷
*/
@Service
public class ValidateCodeServiceImpl implements ValidateCodeService
{
@Resource(name = "captchaProducer")
private Producer captchaProducer;
@Resource(name = "captchaProducerMath")
private Producer captchaProducerMath;
@Autowired
private RedisService redisService;
// 验证码类型
private String captchaType = "math";
/**
* 生成验证码
*/
@Override
public AjaxResult createCapcha() throws IOException, CaptchaException
{
// 保存验证码信息
String uuid = IdUtils.simpleUUID();
String verifyKey = Constants.CAPTCHA_CODE_KEY + uuid;
String capStr = null, code = null;
BufferedImage image = null;
// 生成验证码
if ("math".equals(captchaType))
{
String capText = captchaProducerMath.createText();
capStr = capText.substring(0, capText.lastIndexOf("@"));
code = capText.substring(capText.lastIndexOf("@") + 1);
image = captchaProducerMath.createImage(capStr);
}
else if ("char".equals(captchaType))
{
capStr = code = captchaProducer.createText();
image = captchaProducer.createImage(capStr);
}
redisService.setCacheObject(verifyKey, code, Constants.CAPTCHA_EXPIRATION, TimeUnit.MINUTES);
// 转换流信息写出
FastByteArrayOutputStream os = new FastByteArrayOutputStream();
try
{
ImageIO.write(image, "jpg", os);
}
catch (IOException e)
{
return AjaxResult.error(e.getMessage());
}
AjaxResult ajax = AjaxResult.success();
ajax.put("uuid", uuid);
ajax.put("img", Base64.encode(os.toByteArray()));
return ajax;
}
/**
* 校验验证码
*/
@Override
public void checkCapcha(String code, String uuid) throws CaptchaException
{
if (StringUtils.isEmpty(code))
{
throw new CaptchaException("验证码不能为空");
}
if (StringUtils.isEmpty(uuid))
{
throw new CaptchaException("验证码已失效");
}
String verifyKey = Constants.CAPTCHA_CODE_KEY + uuid;
String captcha = redisService.getCacheObject(verifyKey);
redisService.deleteObject(verifyKey);
if (!code.equalsIgnoreCase(captcha))
{
throw new CaptchaException("验证码错误");
}
}
}