1 WXPayReport.httpRequest(unifiedorder_url, xml, 2000, 5000) 此方法只有(String,int,int),如何通过https://api.mch.weixin.qq.com/pay/unifiedorder，调用预支付url获取到数据

1 忽略unifiedorder_url参数，报500异常

    "msg": "report.mch.weixin.qq.com",

    "code": 500

}