com.hn.utils.weixin.offiaccount.AccessTokenUtil Maven / Gradle / Ivy

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package com.hn.utils.weixin.offiaccount;

import cn.hutool.cache.CacheUtil;
import cn.hutool.cache.impl.TimedCache;
import cn.hutool.core.date.DateUnit;
import cn.hutool.core.util.ObjectUtil;
import cn.hutool.core.util.StrUtil;
import cn.hutool.http.HttpUtil;
import cn.hutool.json.JSONUtil;
import cn.hutool.log.Log;
import cn.hutool.log.LogFactory;
import com.hn.utils.AssertUtils;
import com.hn.utils.weixin.exception.WxException;

/**
 * 描述:
 *  微信获取accessToken
 *  access_token的有效期目前为2个小时，需定时刷新，重复获取将导致上次获取的access_token失效。
 *
 * @author fei
 */
public class AccessTokenUtil {
    private static final Log log = LogFactory.get();

    /**
     * access_token的有效期目前为2个小时
     * 创建缓存，默认7200秒过期
     */
    private static TimedCache timedCache = CacheUtil.newTimedCache(7200 * DateUnit.SECOND.getMillis());

    /**
     *  公众号的全局唯一接口调用凭据 URL
     */
    private static final String ACCESS_TOKEN_URL = "https://api.weixin.qq.com/cgi-bin/token";

    /**
     * 公众号
     * access_token是公众号的全局唯一接口调用凭据
     * @return {@link AccessToken.Result}
     */
    public static AccessToken.Result accessToken() {
        AccessToken.Param requestParam = AccessToken.getRequestParam();
        String appid = requestParam.getAppid();
        if (StrUtil.isNotBlank(timedCache.get(appid))) {
            String cacheToken = timedCache.get(appid);
            return JSONUtil.toBean(cacheToken, AccessToken.Result.class);
        }
        String resultStr = HttpUtil.get(ACCESS_TOKEN_URL, requestParam.toMap());
        AccessToken.Result result = JSONUtil.toBean(resultStr, AccessToken.Result.class);
        log.info("[公众号]获取公众号全局唯一后台接口调用凭据 返回结果:{}", resultStr);
        Integer errCode = result.getErrcode();
        if (ObjectUtil.isNull(errCode)) {
            timedCache.put(appid, resultStr);
            return result;
        }
        AssertUtils.isTrue(AccessToken.ErrCode.SUCCESS.code.equals(errCode),
                WxException.exception(errCode, result.getErrmsg()));

        timedCache.put(appid, resultStr);
        return result;
    }

}