- 微信支付 申请退款 报(400) 错误的请求 ?
微信支付 申请退款 报(400) 错误的请求 ? var url = "https://api.mch.weixin.qq.com/secapi/pay/refund"; string strA = "appid=" + appid + "&mch_id=" + mch_id + "&nonce_str=" + nonce_str + "&out_trade_no=" + out_trade_no + "&total_fee=" + total_fee + "&out_refund_no=" + out_refund_no + "&refund_fee=" + refund_fee; string strk = strA + "&key=" + _keyGroup; //key为商户平台设置的密钥key(假) string strMD5 = MD5(strk).ToUpper();//MD5签名 var formData = "<xml>"; formData += "<appid>" + appid + "</appid>";//appid formData += "<mch_id>" + mch_id + "</mch_id>";//商户号 formData += "<nonce_str>" + nonce_str + "</nonce_str>";//随机字符串,不长于32位。 formData += "<out_refund_no>" + out_refund_no + "</out_refund_no>";//商户退款单号 formData += "<out_trade_no>" + out_trade_no + "</out_trade_no>";//商户订单号 --待 formData += "<refund_fee>" + refund_fee + "</refund_fee>";//退款金额 formData += "<total_fee>" + total_fee + "</total_fee>";//支付金额单位为(分) formData += "<sign>" + strMD5 + "</sign>"; //签名 formData += "</xml>"; //请求数据 var getdata = sendPost(url, formData); /// <summary> /// wx统一下单请求数据 /// </summary> /// <param name="URL">请求地址</param> /// <param name="urlArgs">参数</param> /// <returns></returns> private static string sendPost(string URL, string urlArgs) { //context.Request["args"] System.Net.WebClient wCient = new System.Net.WebClient(); wCient.Headers.Add("Content-Type", "application/x-www-form-urlencoded"); byte[] postData = System.Text.Encoding.UTF8.GetBytes("body=" + urlArgs); byte[] responseData = wCient.UploadData(URL, "POST", postData); string returnStr = System.Text.Encoding.UTF8.GetString(responseData);//返回接受的数据 return returnStr; }
2023-03-20 - 小程序企业小额打款验证如何变更为微信认证?
如题?没有公众号。
2023-03-20