CaptchaController.java
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package com.ruoyi.web.controller.common;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.concurrent.TimeUnit;
import javax.servlet.http.HttpServletResponse;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import com.ruoyi.common.constant.Constants;
import com.ruoyi.common.core.domain.AjaxResult;
import com.ruoyi.common.core.redis.RedisCache;
import com.ruoyi.common.utils.VerifyCodeUtils;
import com.ruoyi.common.utils.sign.Base64;
import com.ruoyi.common.utils.uuid.IdUtils;
/**
* 验证码操作处理
*
* @author ruoyi
*/
@RestController
public class CaptchaController
{
@Autowired
private RedisCache redisCache;
/**
* 生成验证码
*/
@GetMapping("/captchaImage")
public AjaxResult getCode(HttpServletResponse response) throws IOException
{
// 生成随机字串
String verifyCode = VerifyCodeUtils.generateVerifyCode(4);
// 唯一标识
String uuid = IdUtils.simpleUUID();
String verifyKey = Constants.CAPTCHA_CODE_KEY + uuid;
redisCache.setCacheObject(verifyKey, verifyCode, Constants.CAPTCHA_EXPIRATION, TimeUnit.MINUTES);
// 生成图片
int w = 111, h = 36;
ByteArrayOutputStream stream = new ByteArrayOutputStream();
VerifyCodeUtils.outputImage(w, h, stream, verifyCode);
try
{
AjaxResult ajax = AjaxResult.success();
ajax.put("uuid", uuid);
ajax.put("img", Base64.encode(stream.toByteArray()));
return ajax;
}
catch (Exception e)
{
e.printStackTrace();
return AjaxResult.error(e.getMessage());
}
finally
{
stream.close();
}
}
}