src/main/java/cc/mrbird/febs/common/service/ValidateCodeService.java

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package cc.mrbird.febs.common.service;

import cc.mrbird.febs.common.entity.FebsConstant;
import cc.mrbird.febs.common.entity.ImageType;
import cc.mrbird.febs.common.exception.FebsException;
import cc.mrbird.febs.common.properties.FebsProperties;
import cc.mrbird.febs.common.properties.ValidateCodeProperties;
import cc.mrbird.febs.common.utils.HttpContextUtil;
import com.wf.captcha.GifCaptcha;
import com.wf.captcha.SpecCaptcha;
import com.wf.captcha.base.Captcha;
import lombok.RequiredArgsConstructor;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.http.HttpHeaders;
import org.springframework.http.MediaType;
import org.springframework.stereotype.Service;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
import java.time.LocalDateTime;

/**
 * 验证码服务，
 * 如果febs.enable-redis-cache=true，则存redis，否则存session
 *
 * @author MrBird
 */
@Service
@RequiredArgsConstructor
public class ValidateCodeService {

    private final FebsProperties properties;
    private RedisService redisService;
    @Value("${" + FebsProperties.ENABLE_REDIS_CACHE + "}")
    private boolean enableRedisCache;

    @Autowired(required = false)
    public void setRedisService(RedisService redisService) {
        this.redisService = redisService;
    }

    public void create(HttpServletRequest request, HttpServletResponse response) throws IOException {
        HttpSession session = request.getSession();
        String key = session.getId();
        ValidateCodeProperties code = properties.getCode();
        setHeader(response, code.getType());

        Captcha captcha = createCaptcha(code);
        String codeKey = FebsConstant.VALIDATE_CODE_PREFIX + key;
        String codeValue = StringUtils.lowerCase(captcha.text());
        if (enableRedisCache) {
            redisService.set(codeKey, codeValue, code.getTime().getSeconds());
        } else {
            session.setAttribute(codeKey, codeValue);
            LocalDateTime expireTime = LocalDateTime.now().plusSeconds(code.getTime().getSeconds());
            session.setAttribute(FebsConstant.VALIDATE_CODE_TIME_PREFIX + key, expireTime);