com.zopen.wechat.mp.service.WechatMpAccessTokenService Maven / Gradle / Ivy

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package com.zopen.wechat.mp.service;

import com.zcj.util.UtilRandom;
import com.zcj.web.context.SystemContext;
import com.zopen.wechat.exception.WechatAssert;
import com.zopen.wechat.mp.dto.base.AccessToken;
import com.zopen.wechat.mp.dto.jssdk.JsapiTicket;
import com.zopen.wechat.mp.task.WechatInfo;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.client.RestTemplate;

@Component("atoWechatMpAccessTokenService")
public class WechatMpAccessTokenService {

    private static final Logger logger = LoggerFactory.getLogger(WechatMpAccessTokenService.class);

    @Autowired
    private RestTemplate restTemplate;

    /**
     * 刷新 access_token 和 jsapi_ticket 的值，保存到 WechatInfo 中
     * 
     * 如果获取 access_token 失败，则抛出异常
     *
     * @param appId     * 指定 appId
     * @param appSecret * 指定 appSecret
     */
    public void init(final String appId, final String appSecret) {
        String logId = UtilRandom.getRandomChar(4);
        logger.info("[{}]开始刷新 access_token，app_id[{}]", logId, appId);
        String accessToken = httpGetAccessToken(appId, appSecret, logId);
        String jsTicket = null;
        try {
            jsTicket = httpGetJsapiTicket(accessToken, logId);
        } catch (Exception e) {
            logger.warn("[{}]获取 jsapi_ticket 失败，app_id[{}]，错误原因[{}]", logId, appId, e.getMessage());
        }
        logger.debug("[{}]刷新结束，app_id[{}] secret[{}], access_token[{}], jsapi_ticket[{}]", logId, appId, appSecret, accessToken, jsTicket);
        WechatInfo.saveAccessToken(appId, appSecret, accessToken, jsTicket);
    }

    // 异步执行（出错不会影响主线程）
    public void initAsyn(final String appId, final String appSecret) {
        SystemContext.getExecutorService().execute(() -> {
            init(appId, appSecret);
        });
    }

    // 远程获取 access_token 的值
    private String httpGetAccessToken(String appId, String appSecret, String logId) {
        WechatAssert.notNullAndEmpty(appId, "appId 不能为空");
        WechatAssert.notNullAndEmpty(appSecret, "appSecret 不能为空");
        String url = String.format(WechatHttpUrl.MP_GET_ACCESS_TOKEN, appId, appSecret);
        AccessToken accessToken = restTemplate.getForObject(url, AccessToken.class);
        WechatAssert.notNull(accessToken, "获取 access_token 失败");
        accessToken.valid("获取 access_token 失败");
        logger.debug("[{}]获取 access_token 成功： app_id[{}] access_token[{}]", logId, appId, accessToken.getAccess_token());
        return accessToken.getAccess_token();
    }

    // 远程获取 jsapi_ticket 的值
    // https://developers.weixin.qq.com/doc/offiaccount/OA_Web_Apps/JS-SDK.html
    private String httpGetJsapiTicket(String accessToken, String logId) {
        WechatAssert.notNullAndEmpty(accessToken, "access_token 不能为空");
        String url = String.format(WechatHttpUrl.MP_GET_TICKET, accessToken);
        JsapiTicket jsapiTicket = restTemplate.getForObject(url, JsapiTicket.class);
        WechatAssert.notNull(jsapiTicket, "获取 jsapi_ticket 失败");
        jsapiTicket.valid("获取 jsapi_ticket 失败");
        logger.debug("[{}]获取 jsapi_ticket 成功： access_token[{}] jsapi_ticket[{}]", logId, accessToken, jsapiTicket.getTicket());
        return jsapiTicket.getTicket();
    }

}