/// <summary>
/// 微信申请退款接口
/// </summary>
/// <param name="total_fee">订单金额</param>
/// <param name="refund_fee">退款金额</param>
/// <param name="refund_fee_type">退款货币种类</param>
/// <param name="refund_desc">退款原因</param>
/// <param name="refund_account">退款资金来源</param>
/// <param name="notify_url">回调地址</param>
/// <param name="transaction_id">微信订单号</param>
/// <param name="out_trade_no">商家内部订单号</param>
/// <param name="sign_type">签名类型，默认为0，代表MD5加密方式，1为SHA256加密方式，填入其他参数抛出异常</param>
/// <returns></returns>
public string Refund(int total_fee, int refund_fee, string transaction_id = null, string out_trade_no = null, string refund_desc = null, bool refund_account = true, string notify_url = null, int sign_type = 0, string refund_fee_type = null)
{
WxPayData wd = new WxPayData();
wd.SetValue("appid", WxPayConfig.appid);
wd.SetValue("mch_id", WxPayConfig.mchid);
wd.SetValue("nonce_str", WxUntil.GetRandomStr());
if (String.IsNullOrEmpty(transaction_id) && String.IsNullOrEmpty(out_trade_no))
{
throw new WxPayException("商家订单号和微信订单号不能同时为空!");
}
if (String.IsNullOrEmpty(transaction_id))
{
wd.SetValue("transaction_id", transaction_id);
}
else
{
wd.SetValue("out_trade_no", out_trade_no);
}
wd.SetValue("out_refund_no", WxUntil.CreateOrderNo(1));
wd.SetValue("refund_fee", refund_fee);
wd.SetValue("total_fee", total_fee);
if (!String.IsNullOrEmpty(refund_fee_type))
{
wd.SetValue("refund_fee_type", refund_fee_type);
}
if (!String.IsNullOrEmpty(refund_desc))
{
wd.SetValue("refund_desc", refund_desc);
}
if (!refund_account)
{
wd.SetValue("refund_account", "REFUND_SOURCE_RECHARGE_FUNDS");
}
if (!string.IsNullOrEmpty(notify_url))
{
wd.SetValue("notify_url", notify_url);
}
if (sign_type == 0)
{
wd.SetValue("sign", wd.MakeSign());
}
else
{
wd.SetValue("sign_type", "HMAC-SHA256");
wd.SetValue("sign", wd.MakeSign(sign_type));
}
return(WxUntil.GetPostFinallyStr(WxPayConfig.BaseUrl + WxPayConfig.Refund, wd.DicToXml(), true));
}
/// <summary>
/// 统一下单接口
/// </summary>
/// <param name="body">商品描述</param>
/// <param name="cost">费用，单位为分</param>
/// <param name="IP">设备的IP</param>
/// <param name="startTime">交易开始时间</param>
/// <param name="endTime">交易结束时间</param>
/// <param name="notifyurl">回调URL</param>
/// <param name="type"> 0代表JS支付，1代表NATIVE支付，2代表APP支付，3代表MWEB支付</param>
/// <param name="prodID">商品编号，交易类型 Native时，prodID为必填</param>
/// <param name="limit">指定支付方式，默认false，若填入true则限制不能为信用卡支付</param>
/// <param name="openid">用户openid，若为JS支付，则openid为必填项</param>
/// <param name="receipt">是否开具发票，默认false,填入true进行开票</param>
/// <param name="detail">商品详细描述</param>
/// <param name="attach">商品附加信息</param>
/// <param name="tags">商品优惠标记</param>
/// <param name="scence">场景，必须为json格式</param>
/// <param name="sign_type">签名类型，默认为0，代表MD5加密方式，1为SHA256加密方式，填入其他参数抛出异常</param>
/// <returns>请求结果</returns>
public string UniteOrder(string body, int cost, string IP, string notifyurl, int type, string prodID = null, bool limit = false, string openid = null, bool receipt = false, string startTime = null, string endTime = null, string detail = null, string attach = null, string tags = null, string scence = null, int sign_type = 0)
{
WxPayData wd = new WxPayData();
wd.SetValue("appid", WxPayConfig.appid); //用户公众号appid
wd.SetValue("mch_id", WxPayConfig.mchid); //商户号appid
wd.SetValue("device_info", "Web"); //设备号
wd.SetValue("nonce_str", WxUntil.GetRandomStr()); //随机字符串
//wd.SetValue("sign_type", "MD5");//签名类型
wd.SetValue("fee_type", "CNY"); //货币种类
wd.SetValue("body", body); //商品描述
wd.SetValue("out_trade_no", WxUntil.CreateOrderNo()); //系统内部生成的订单号
wd.SetValue("total_fee", cost); //消费金额
wd.SetValue("spbill_create_ip", IP); //IP地址
wd.SetValue("notify_url", notifyurl); //回调地址
switch (type)
{
case 0:
if (String.IsNullOrEmpty(openid))
{
throw new WxPayException("当支付类型为JSAPI时，openID不能为空");
}
wd.SetValue("openid", openid);
wd.SetValue("trade_type", "JSAPI");
break;
case 1:
if (String.IsNullOrEmpty(prodID))
{
throw new WxPayException("当支付类型为NATIVE时，prodNo不能为空!");
}
wd.SetValue("product_id", prodID);
wd.SetValue("trade_type", "NATIVE");
break;
case 2:
wd.SetValue("trade_type", "APP");
break;
case 3:
wd.SetValue("trade_type", "MWEB");
break;
default:
throw new WxPayException("您输入的支付方式代码有误!");
}
if (!String.IsNullOrEmpty(openid))
{
wd.SetValue("openid", openid);
}
if (!String.IsNullOrEmpty(prodID))
{
wd.SetValue("product_id", prodID);
}
if (limit)
{
wd.SetValue("limit_pay", "no_credit");
}
if (receipt)
{
wd.SetValue("receipt", "Y");
}
if (!String.IsNullOrEmpty(scence))
{
wd.SetValue("scene_info", JObject.Parse(scence));
}
if (!String.IsNullOrEmpty(startTime))
{
wd.SetValue("time_start", startTime);
}
if (!String.IsNullOrEmpty(endTime))
{
wd.SetValue("time_expire", endTime);
}
if (!String.IsNullOrEmpty(tags))
{
wd.SetValue("goods_tag", tags);
}
if (!String.IsNullOrEmpty(detail))
{
wd.SetValue("detail", detail);
}
if (!String.IsNullOrEmpty(attach))
{
wd.SetValue("detail", attach);
}
if (sign_type == 0)
{
wd.SetValue("sign", wd.MakeSign());
}
else
{
wd.SetValue("sign_type", "HMAC-SHA256");
wd.SetValue("sign", wd.MakeSign(sign_type));
}
return(WxUntil.GetPostFinallyStr(WxPayConfig.BaseUrl + WxPayConfig.WxPay, wd.DicToXml()));
}