项目存放accessToken 皆是一redis存储

1. 获得Access Token

并且获取jsapi_ticket 

accessToken 存在有效期 所以，用定时任务 定时刷新

WeChatServiceImpl

一下几个方法来处理：

/**
 * 刷新AccessToken
 * 仅在 接口返回token失效时
 * @return
 */
@Override
public boolean flushWeChatAccessToken() throws Exception{
    // 获取AccessToken
    String requestUrl = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=%s&secret=%s";
    String appid = PropertiesReader.readString("weChat","server_appId");
    String secret = PropertiesReader.readString("weChat","server_appSecret");
    requestUrl = String.format(requestUrl, appid, secret);
    JSONObject accessTokenObject = HttpClientUtil.getToHttps(requestUrl);
    String accessToken = accessTokenObject.getString("access_token");
    int expireTime = accessTokenObject.getInteger("expires_in");
    setAccessToken(Const.WEIXINACCESSTOKEN,accessToken,expireTime);
    // 获取jsticket
    String jsticketRequestUrl = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=%s&type=jsapi";
    jsticketRequestUrl = String.format(jsticketRequestUrl, accessToken);
    JSONObject jsticketObject = HttpClientUtil.getToHttps(jsticketRequestUrl);
    String ticket = jsticketObject.getString("ticket");