修改

library/utils/WxpayV2.php

@@ -62,7 +62,7 @@ class WxpayV2{
             'notify_url'       => $this->config["NOTIFY_URL"], // 通知地址
             'trade_type'       => "JSAPI", // 交易类型
             'openid'           => $post["openid"],
-            'signType'         => Hash::ALGO_MD5,
+//            'signType'         => Hash::ALGO_MD5,
         ];
 //        $params["sign"] = self::getSign($params);
         $result = $this->clientHttp("POST", $apiUrl, $params);