/***
* 申请退款完整业务流程逻辑
* @param transaction_id 微信订单号（优先使用）
* @param out_trade_no 商户订单号
* @param total_fee 订单总金额
* @param refund_fee 退款金额
* @return 退款结果（xml格式）
*/
public static WxPayData Run(string transaction_id, string out_trade_no, int total_fee, int refund_fee, string out_refund_no)
{
WxPayLog.Info("Refund", "Refund is processing...");
WxPayData data = new WxPayData();
if (!string.IsNullOrEmpty(transaction_id))//微信订单号存在的条件下，则已微信订单号为准
{
data.SetValue("transaction_id", transaction_id);
}
else//微信订单号不存在，才根据商户订单号去退款
{
data.SetValue("out_trade_no", out_trade_no);
}
data.SetValue("total_fee", total_fee); //订单总金额
data.SetValue("refund_fee", refund_fee); //退款金额
data.SetValue("out_refund_no", out_refund_no); //商户退款单号
data.SetValue("op_user_id", WxPayConfig.MCHID); //操作员，默认为商户号
WxPayData result = WxPayApi.Refund(data); //提交退款申请给API，接收返回数据
WxPayLog.Info("Refund", "Refund process complete, result : " + result.ToXml());
return(result);
}
/**
* 查询订单情况
* @param string out_trade_no 商户订单号
* @param bool success 支付结果：true表示支付成功，false表示支付失败
* @return 订单查询接口返回的数据，参见协议接口
*/
public static WxPayData Query(string out_trade_no, out bool success)
{
success = false;
//确认支付是否成功,每隔一段时间查询一次订单，共查询10次
int queryTimes = 0;//查询次数计数器
while (queryTimes++ <= 10)
{
int succResult = 0;//查询结果
WxPayData queryResult = Query(out_trade_no, out succResult);
//如果需要继续查询，则等待2s后继续
if (succResult == 2)
{
Thread.Sleep(2000);
continue;
}
//查询成功,返回订单查询接口返回的数据
else if (succResult == 1)
{
WxPayLog.Debug("MicroPay", "Mircopay success, return order query result : " + queryResult.ToXml());
success = true;
return(queryResult);
}
//订单交易失败，返回订单查询接口返回的数据
else
{
WxPayLog.Error("MicroPay", "Micropay failure, return order query result : " + queryResult.ToXml());
return(queryResult);
}
}
return(null);
}
/**
*
* 通过code换取网页授权access_token和openid的返回数据，正确时返回的JSON数据包如下：
* {
* "access_token":"ACCESS_TOKEN",
* "expires_in":7200,
* "refresh_token":"REFRESH_TOKEN",
* "openid":"OPENID",
* "scope":"SCOPE",
* "unionid": "o6_bmasdasdsad6_2sgVt7hMZOPfL"
* }
* 其中access_token可用于获取共享收货地址
* openid是微信支付jsapi支付接口统一下单时必须的参数
* 更详细的说明请参考网页授权获取用户基本信息：http://mp.weixin.qq.com/wiki/17/c0f37d5704f0b64713d5d2c37b468d75.html
* @失败时抛异常WxPayException
*/
public void GetOpenidAndAccessTokenFromCode(string code)
{
try
{
//构造获取openid及access_token的url
WxPayData data = new WxPayData();
data.SetValue("appid", WxPayConfig.APPID);
data.SetValue("secret", WxPayConfig.APPSECRET);
data.SetValue("code", code);
data.SetValue("grant_type", "authorization_code");
string url = "https://api.weixin.qq.com/sns/oauth2/access_token?" + data.ToUrl();
//请求url以获取数据
string result = HttpService.Get(url);
WxPayLog.Debug(this.GetType().ToString(), "GetOpenidAndAccessTokenFromCode response : " + result);
//保存access_token，用于收货地址获取
access_token = JsonHelper.GetJsonNode(result, "access_token");
//获取用户openid
openid = JsonHelper.GetJsonNode(result, "openid");
WxPayLog.Debug(this.GetType().ToString(), "Get openid : " + openid);
WxPayLog.Debug(this.GetType().ToString(), "Get access_token : " + access_token);
}
catch (Exception ex)
{
WxPayLog.Error(this.GetType().ToString(), ex.ToString());
throw;
}
}
/**
*
* 网页授权获取用户基本信息的全部过程
* 详情请参看网页授权获取用户基本信息：http://mp.weixin.qq.com/wiki/17/c0f37d5704f0b64713d5d2c37b468d75.html
* 第一步：利用url跳转获取code
* 第二步：利用code去获取openid和access_token
*
*/
public void GetOpenidAndAccessToken()
{
if (!string.IsNullOrEmpty(httpContext.Request.QueryString["code"]))
{
//获取code码，以获取openid和access_token
string code = httpContext.Request.QueryString["code"];
WxPayLog.Debug(this.GetType().ToString(), "Get code : " + code);
GetOpenidAndAccessTokenFromCode(code);
}
else
{
//构造网页授权获取code的URL
string host = httpContext.Request.Url.Host;
string rawUrl = httpContext.Request.RawUrl;
string redirect_uri = HttpUtility.UrlEncode("http://" + host + rawUrl);
WxPayData data = new WxPayData();
data.SetValue("appid", WxPayConfig.APPID);
data.SetValue("redirect_uri", redirect_uri);
data.SetValue("response_type", "code");
data.SetValue("scope", "snsapi_base");
data.SetValue("state", "STATE" + "#wechat_redirect");
string url = "https://open.weixin.qq.com/connect/oauth2/authorize?" + data.ToUrl();
WxPayLog.Debug(this.GetType().ToString(), "Will Redirect to URL : " + url);
try
{
//触发微信返回code码
httpContext.Response.Redirect(url);//Redirect函数会抛出ThreadAbortException异常，不用处理这个异常
}
catch (System.Threading.ThreadAbortException ex)
{
}
}
}
/**
* 调用统一下单，获得下单结果
* @return 统一下单结果
* @失败时抛异常WxPayException
*/
public WxPayData GetUnifiedOrderResult(string out_trade_no, int total_fee, string notify_url, string time_expire)
{
//统一下单
WxPayData data = new WxPayData();
data.SetValue("body", string.Format("{0}订单:{1}", AppConfig.Global.WebSiteName, out_trade_no));
data.SetValue("attach", out_trade_no);
data.SetValue("out_trade_no", out_trade_no);
data.SetValue("total_fee", total_fee);
data.SetValue("time_start", DateTime.Now.ToString("yyyyMMddHHmmss"));
data.SetValue("time_expire", time_expire);
//data.SetValue("goods_tag", "SJG365");
data.SetValue("trade_type", "JSAPI");
data.SetValue("openid", openid);
data.SetValue("notify_url", notify_url);
WxPayData result = WxPayApi.UnifiedOrder(data);
if (!result.IsSet("appid") || !result.IsSet("prepay_id") || result.GetValue("prepay_id").ToString() == "")
{
WxPayLog.Error(this.GetType().ToString(), "UnifiedOrder response error!");
throw new WxPayException("UnifiedOrder response error!");
}
unifiedOrderResult = result;
return(result);
}
/**
*
* 检测签名是否正确
* 正确返回true，错误抛异常
*/
public bool CheckSign()
{
//如果没有设置签名，则跳过检测
if (!IsSet("sign"))
{
WxPayLog.Error(this.GetType().ToString(), "WxPayData签名存在但不合法!");
throw new WxPayException("WxPayData签名存在但不合法!");
}
//如果设置了签名但是签名为空，则抛异常
else if (GetValue("sign") == null || GetValue("sign").ToString() == "")
{
WxPayLog.Error(this.GetType().ToString(), "WxPayData签名存在但不合法!");
throw new WxPayException("WxPayData签名存在但不合法!");
}
//获取接收到的签名
string return_sign = GetValue("sign").ToString();
//在本地计算新的签名
string cal_sign = MakeSign();
if (cal_sign == return_sign)
{
return(true);
}
WxPayLog.Error(this.GetType().ToString(), "WxPayData签名验证错误!");
throw new WxPayException("WxPayData签名验证错误!");
}
/**
*
* 转换短链接
* 该接口主要用于扫码原生支付模式一中的二维码链接转成短链接(weixin://wxpay/s/XXXXXX)，
* 减小二维码数据量，提升扫描速度和精确度。
* @param WxPayData inputObj 提交给转换短连接API的参数
* @param int timeOut 接口超时时间
* @throws WxPayException
* @return 成功时返回，其他抛异常
*/
public static WxPayData ShortUrl(WxPayData inputObj, int timeOut = 6)
{
string url = "https://api.mch.weixin.qq.com/tools/shorturl";
//检测必填参数
if (!inputObj.IsSet("long_url"))
{
throw new WxPayException("需要转换的URL，签名用原串，传输需URL encode！");
}
inputObj.SetValue("appid", WxPayConfig.APPID); //公众账号ID
inputObj.SetValue("mch_id", WxPayConfig.MCHID); //商户号
inputObj.SetValue("nonce_str", GenerateNonceStr()); //随机字符串
inputObj.SetValue("sign", inputObj.MakeSign()); //签名
string xml = inputObj.ToXml();
var start = DateTime.Now;//请求开始时间
WxPayLog.Debug("WxPayApi", "ShortUrl request : " + xml);
string response = HttpService.Post(xml, url, false, timeOut);
WxPayLog.Debug("WxPayApi", "ShortUrl response : " + response);
var end = DateTime.Now;
int timeCost = (int)((end - start).TotalMilliseconds);
WxPayData result = new WxPayData();
result.FromXml(response);
ReportCostTime(url, timeCost, result);//测速上报
return(result);
}
/**
*
* 撤销订单API接口
* @param WxPayData inputObj 提交给撤销订单API接口的参数，out_trade_no和transaction_id必填一个
* @param int timeOut 接口超时时间
* @throws WxPayException
* @return 成功时返回API调用结果，其他抛异常
*/
public static WxPayData Reverse(WxPayData inputObj, int timeOut = 15)
{
string url = "https://api.mch.weixin.qq.com/secapi/pay/reverse";
//检测必填参数
if (!inputObj.IsSet("out_trade_no") && !inputObj.IsSet("transaction_id"))
{
throw new WxPayException("撤销订单API接口中，参数out_trade_no和transaction_id必须填写一个！");
}
inputObj.SetValue("appid", WxPayConfig.APPID); //公众账号ID
inputObj.SetValue("mch_id", WxPayConfig.MCHID); //商户号
inputObj.SetValue("nonce_str", GenerateNonceStr()); //随机字符串
inputObj.SetValue("sign", inputObj.MakeSign()); //签名
string xml = inputObj.ToXml();
var start = DateTime.Now;//请求开始时间
WxPayLog.Debug("WxPayApi", "Reverse request : " + xml);
string response = HttpService.Post(xml, url, true, timeOut);
WxPayLog.Debug("WxPayApi", "Reverse response : " + response);
var end = DateTime.Now;
int timeCost = (int)((end - start).TotalMilliseconds);
WxPayData result = new WxPayData();
result.FromXml(response);
ReportCostTime(url, timeCost, result);//测速上报
return(result);
}
/**
* 生成直接支付url，支付url有效期为2小时,模式二
* @param out_trade_no 商户订单号
* @param total_fee 总金额
* @param notifyUrl 异步通知url
* @param time_expire 交易结束时间
* @return 模式二URL
*/
public string GetPayUrl(string out_trade_no, int total_fee, string notify_url, string time_expire)
{
WxPayLog.Info(this.GetType().ToString(), "Native pay mode 2 url is producing...");
WxPayData data = new WxPayData();
data.SetValue("body", string.Format("{0}订单:{1}", AppConfig.Global.WebSiteName, out_trade_no)); //商品描述
data.SetValue("attach", out_trade_no); //附加数据
data.SetValue("out_trade_no", out_trade_no); //商户订单号
data.SetValue("total_fee", total_fee); //总金额
data.SetValue("time_start", DateTime.Now.ToString("yyyyMMddHHmmss")); //交易起始时间
data.SetValue("time_expire", time_expire); //交易结束时间
//data.SetValue("goods_tag", "SJG365");//商品标记
data.SetValue("trade_type", "NATIVE"); //交易类型
data.SetValue("product_id", out_trade_no); //商品ID
data.SetValue("notify_url", notify_url);
WxPayData result = WxPayApi.UnifiedOrder(data);//调用统一下单接口
if (result.GetValue("return_code").ToString() != "SUCCESS")
{
throw new WxPayException(result.GetValue("return_msg").ToString());
}
else if (result.GetValue("result_code").ToString() != "SUCCESS")
{
throw new WxPayException(result.GetValue("err_code_des").ToString());
}
string url = result.GetValue("code_url").ToString();//获得统一下单接口返回的二维码链接
WxPayLog.Info(this.GetType().ToString(), "Get native pay mode 2 url : " + url);
return(url);
}
/**
*
* 申请退款
* @param WxPayData inputObj 提交给申请退款API的参数
* @param int timeOut 超时时间
* @throws WxPayException
* @return 成功时返回接口调用结果，其他抛异常
*/
public static WxPayData Refund(WxPayData inputObj, int timeOut = 6)
{
string url = "https://api.mch.weixin.qq.com/secapi/pay/refund";
//检测必填参数
if (!inputObj.IsSet("out_trade_no") && !inputObj.IsSet("transaction_id"))
{
throw new WxPayException("退款申请接口中，out_trade_no、transaction_id至少填一个！");
}
else if (!inputObj.IsSet("out_refund_no"))
{
throw new WxPayException("退款申请接口中，缺少必填参数out_refund_no！");
}
else if (!inputObj.IsSet("total_fee"))
{
throw new WxPayException("退款申请接口中，缺少必填参数total_fee！");
}
else if (!inputObj.IsSet("refund_fee"))
{
throw new WxPayException("退款申请接口中，缺少必填参数refund_fee！");
}
else if (!inputObj.IsSet("op_user_id"))
{
throw new WxPayException("退款申请接口中，缺少必填参数op_user_id！");
}
inputObj.SetValue("appid", WxPayConfig.APPID); //公众账号ID
inputObj.SetValue("mch_id", WxPayConfig.MCHID); //商户号
inputObj.SetValue("nonce_str", Guid.NewGuid().ToString().Replace("-", "")); //随机字符串
inputObj.SetValue("sign", inputObj.MakeSign()); //签名
string xml = inputObj.ToXml();
var start = DateTime.Now;
WxPayLog.Debug("WxPayApi", "Refund request : " + xml);
string response = HttpService.Post(xml, url, true, timeOut);//调用HTTP通信接口提交数据到API
WxPayLog.Debug("WxPayApi", "Refund response : " + response);
var end = DateTime.Now;
int timeCost = (int)((end - start).TotalMilliseconds);//获得接口耗时
//将xml格式的结果转换为对象以返回
WxPayData result = new WxPayData();
result.FromXml(response);
ReportCostTime(url, timeCost, result);//测速上报
return(result);
}
/**
* 提交被扫支付API
* 收银员使用扫码设备读取微信用户刷卡授权码以后，二维码或条码信息传送至商户收银台，
* 由商户收银台或者商户后台调用该接口发起支付。
* @param WxPayData inputObj 提交给被扫支付API的参数
* @param int timeOut 超时时间
* @throws WxPayException
* @return 成功时返回调用结果，其他抛异常
*/
public static WxPayData Micropay(WxPayData inputObj, int timeOut = 30)
{
string url = "https://api.mch.weixin.qq.com/pay/micropay";
//检测必填参数
if (!inputObj.IsSet("body"))
{
throw new WxPayException("提交被扫支付API接口中，缺少必填参数body！");
}
else if (!inputObj.IsSet("out_trade_no"))
{
throw new WxPayException("提交被扫支付API接口中，缺少必填参数out_trade_no！");
}
else if (!inputObj.IsSet("total_fee"))
{
throw new WxPayException("提交被扫支付API接口中，缺少必填参数total_fee！");
}
else if (!inputObj.IsSet("auth_code"))
{
throw new WxPayException("提交被扫支付API接口中，缺少必填参数auth_code！");
}
inputObj.SetValue("spbill_create_ip", System.Web.HttpContext.Current.Request.UserHostAddress); //终端ip
inputObj.SetValue("appid", WxPayConfig.APPID); //公众账号ID
inputObj.SetValue("mch_id", WxPayConfig.MCHID); //商户号
inputObj.SetValue("nonce_str", Guid.NewGuid().ToString().Replace("-", "")); //随机字符串
inputObj.SetValue("sign", inputObj.MakeSign()); //签名
string xml = inputObj.ToXml();
var start = DateTime.Now;//请求开始时间
WxPayLog.Debug("WxPayApi", "MicroPay request : " + xml);
string response = HttpService.Post(xml, url, false, timeOut);//调用HTTP通信接口以提交数据到API
WxPayLog.Debug("WxPayApi", "MicroPay response : " + response);
var end = DateTime.Now;
int timeCost = (int)((end - start).TotalMilliseconds);//获得接口耗时
//将xml格式的结果转换为对象以返回
WxPayData result = new WxPayData();
result.FromXml(response);
ReportCostTime(url, timeCost, result);//测速上报
return(result);
}
/**
*
* 获取收货地址js函数入口参数,详情请参考收货地址共享接口：http://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=7_9
* @return string 共享收货地址js函数需要的参数，json格式可以直接做参数使用
*/
public string GetEditAddressParameters()
{
string parameter = "";
try
{
string host = httpContext.Request.Url.Host;
string path = httpContext.Request.Path;
string queryString = httpContext.Request.Url.Query;
//这个地方要注意，参与签名的是网页授权获取用户信息时微信后台回传的完整url
string url = "http://" + host + path + queryString;
//构造需要用SHA1算法加密的数据
WxPayData signData = new WxPayData();
signData.SetValue("appid", WxPayConfig.APPID);
signData.SetValue("url", url);
signData.SetValue("timestamp", WxPayApi.GenerateTimeStamp());
signData.SetValue("noncestr", WxPayApi.GenerateNonceStr());
signData.SetValue("accesstoken", access_token);
string param = signData.ToUrl();
WxPayLog.Debug(this.GetType().ToString(), "SHA1 encrypt param : " + param);
//SHA1加密
string addrSign = "";//FormsAuthentication.HashPasswordForStoringInConfigFile(param, "SHA1");
WxPayLog.Debug(this.GetType().ToString(), "SHA1 encrypt result : " + addrSign);
//获取收货地址js函数入口参数
WxPayData afterData = new WxPayData();
afterData.SetValue("appId", WxPayConfig.APPID);
afterData.SetValue("scope", "jsapi_address");
afterData.SetValue("signType", "sha1");
afterData.SetValue("addrSign", addrSign);
afterData.SetValue("timeStamp", signData.GetValue("timestamp"));
afterData.SetValue("nonceStr", signData.GetValue("noncestr"));
//转为json格式
parameter = afterData.ToJson();
WxPayLog.Debug(this.GetType().ToString(), "Get EditAddressParam : " + parameter);
}
catch (Exception ex)
{
WxPayLog.Error(this.GetType().ToString(), ex.ToString());
throw;
}
return(parameter);
}
/**
* @values格式化成能在Web页面上显示的结果（因为web页面上不能直接输出xml格式的字符串）
*/
public string ToPrintStr()
{
string str = "";
foreach (KeyValuePair <string, object> pair in m_values)
{
if (pair.Value == null)
{
WxPayLog.Error(this.GetType().ToString(), "WxPayData内部含有值为null的字段!");
throw new WxPayException("WxPayData内部含有值为null的字段!");
}
str += string.Format("{0}={1}<br>", pair.Key, pair.Value.ToString());
}
WxPayLog.Debug(this.GetType().ToString(), "Print in Web Page : " + str);
return(str);
}
/**
*
* 测速上报接口实现
* @param WxPayData inputObj 提交给测速上报接口的参数
* @param int timeOut 测速上报接口超时时间
* @throws WxPayException
* @return 成功时返回测速上报接口返回的结果，其他抛异常
*/
public static WxPayData Report(WxPayData inputObj, int timeOut = 1)
{
string url = "https://api.mch.weixin.qq.com/payitil/report";
//检测必填参数
if (!inputObj.IsSet("interface_url"))
{
throw new WxPayException("接口URL，缺少必填参数interface_url！");
}
if (!inputObj.IsSet("return_code"))
{
throw new WxPayException("返回状态码，缺少必填参数return_code！");
}
if (!inputObj.IsSet("result_code"))
{
throw new WxPayException("业务结果，缺少必填参数result_code！");
}
if (!inputObj.IsSet("user_ip"))
{
throw new WxPayException("访问接口IP，缺少必填参数user_ip！");
}
if (!inputObj.IsSet("execute_time_"))
{
throw new WxPayException("接口耗时，缺少必填参数execute_time_！");
}
inputObj.SetValue("appid", WxPayConfig.APPID); //公众账号ID
inputObj.SetValue("mch_id", WxPayConfig.MCHID); //商户号
inputObj.SetValue("user_ip", System.Web.HttpContext.Current.Request.UserHostAddress); //终端ip
inputObj.SetValue("time", DateTime.Now.ToString("yyyyMMddHHmmss")); //商户上报时间
inputObj.SetValue("nonce_str", GenerateNonceStr()); //随机字符串
inputObj.SetValue("sign", inputObj.MakeSign()); //签名
string xml = inputObj.ToXml();
WxPayLog.Info("WxPayApi", "Report request : " + xml);
string response = HttpService.Post(xml, url, false, timeOut);
WxPayLog.Info("WxPayApi", "Report response : " + response);
WxPayData result = new WxPayData();
result.FromXml(response);
return(result);
}
/**
* 生成扫描支付模式一URL
* @param productId 商品ID
* @return 模式一URL
*/
public string GetPrePayUrl(string productId)
{
WxPayLog.Info(this.GetType().ToString(), "Native pay mode 1 url is producing...");
WxPayData data = new WxPayData();
data.SetValue("appid", WxPayConfig.APPID); //公众帐号id
data.SetValue("mch_id", WxPayConfig.MCHID); //商户号
data.SetValue("time_stamp", WxPayApi.GenerateTimeStamp()); //时间戳
data.SetValue("nonce_str", WxPayApi.GenerateNonceStr()); //随机字符串
data.SetValue("product_id", productId); //商品ID
data.SetValue("sign", data.MakeSign()); //签名
string str = ToUrlParams(data.GetValues()); //转换为URL串
string url = "weixin://wxpay/bizpayurl?" + str;
WxPayLog.Info(this.GetType().ToString(), "Get native pay mode 1 url : " + url);
return(url);
}
/**
*
* 从统一下单成功返回的数据中获取微信浏览器调起jsapi支付所需的参数，
* 微信浏览器调起JSAPI时的输入参数格式如下：
* {
* "appId" : "wx2421b1c4370ec43b", //公众号名称，由商户传入
* "timeStamp":" 1395712654", //时间戳，自1970年以来的秒数
* "nonceStr" : "e61463f8efa94090b1f366cccfbbb444", //随机串
* "package" : "prepay_id=u802345jgfjsdfgsdg888",
* "signType" : "MD5", //微信签名方式
* "paySign" : "70EA570631E4BB79628FBCA90534C63FF7FADD89" //微信签名
* }
* @return string 微信浏览器调起JSAPI时的输入参数，json格式可以直接做参数用
* 更详细的说明请参考网页端调起支付API：http://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=7_7
*
*/
public string GetJsApiParameters()
{
WxPayLog.Debug(this.GetType().ToString(), "JsApiPay::GetJsApiParam is processing...");
WxPayData jsApiParam = new WxPayData();
jsApiParam.SetValue("appId", unifiedOrderResult.GetValue("appid"));
jsApiParam.SetValue("timeStamp", WxPayApi.GenerateTimeStamp());
jsApiParam.SetValue("nonceStr", WxPayApi.GenerateNonceStr());
jsApiParam.SetValue("package", "prepay_id=" + unifiedOrderResult.GetValue("prepay_id"));
jsApiParam.SetValue("signType", "MD5");
jsApiParam.SetValue("paySign", jsApiParam.MakeSign());
string parameters = jsApiParam.ToJson();
WxPayLog.Debug(this.GetType().ToString(), "Get jsApiParam : " + parameters);
return(parameters);
}
/**
* @Dictionary格式转化成url参数格式
* @ return url格式串, 该串不包含sign字段值
*/
public string ToUrl()
{
string buff = "";
foreach (KeyValuePair <string, object> pair in m_values)
{
if (pair.Value == null)
{
WxPayLog.Error(this.GetType().ToString(), "WxPayData内部含有值为null的字段!");
throw new WxPayException("WxPayData内部含有值为null的字段!");
}
if (pair.Key != "sign" && pair.Value.ToString() != "")
{
buff += pair.Key + "=" + pair.Value + "&";
}
}
buff = buff.Trim('&');
return(buff);
}
/// <summary>
/// 接收从微信支付后台发送过来的数据并验证签名
/// </summary>
/// <returns>微信支付后台返回的数据</returns>
public WxPayData GetNotifyData()
{
//接收从微信后台POST过来的数据
System.IO.Stream s = page.Request.InputStream;
int count = 0;
byte[] buffer = new byte[1024];
StringBuilder builder = new StringBuilder();
while ((count = s.Read(buffer, 0, 1024)) > 0)
{
builder.Append(Encoding.UTF8.GetString(buffer, 0, count));
}
s.Flush();
s.Close();
s.Dispose();
WxPayLog.Info(this.GetType().ToString(), "Receive data from WeChat : " + builder.ToString());
//转换数据格式并验证签名
WxPayData data = new WxPayData();
try
{
data.FromXml(builder.ToString());
}
catch (WxPayException ex)
{
//若签名错误，则立即返回结果给微信支付后台
WxPayData res = new WxPayData();
res.SetValue("return_code", "FAIL");
res.SetValue("return_msg", ex.Message);
WxPayLog.Error(this.GetType().ToString(), "Sign check error : " + res.ToXml());
page.Response.Write(res.ToXml());
page.Response.End();
}
WxPayLog.Info(this.GetType().ToString(), "Check sign success");
return(data);
}
/**
* @将Dictionary转成xml
* @return 经转换得到的xml串
* @throws WxPayException
**/
public string ToXml()
{
//数据为空时不能转化为xml格式
if (0 == m_values.Count)
{
WxPayLog.Error(this.GetType().ToString(), "WxPayData数据为空!");
throw new WxPayException("WxPayData数据为空!");
}
string xml = "<xml>";
foreach (KeyValuePair <string, object> pair in m_values)
{
//字段值不能为null，会影响后续流程
if (pair.Value == null)
{
WxPayLog.Error(this.GetType().ToString(), "WxPayData内部含有值为null的字段!");
throw new WxPayException("WxPayData内部含有值为null的字段!");
}
if (pair.Value.GetType() == typeof(int))
{
xml += "<" + pair.Key + ">" + pair.Value + "</" + pair.Key + ">";
}
else if (pair.Value.GetType() == typeof(string))
{
xml += "<" + pair.Key + ">" + "<![CDATA[" + pair.Value + "]]></" + pair.Key + ">";
}
else//除了string和int类型不能含有其他数据类型
{
WxPayLog.Error(this.GetType().ToString(), "WxPayData字段数据类型错误!");
throw new WxPayException("WxPayData字段数据类型错误!");
}
}
xml += "</xml>";
return(xml);
}
/**
*
* 查询退款
* 提交退款申请后，通过该接口查询退款状态。退款有一定延时，
* 用零钱支付的退款20分钟内到账，银行卡支付的退款3个工作日后重新查询退款状态。
* out_refund_no、out_trade_no、transaction_id、refund_id四个参数必填一个
* @param WxPayData inputObj 提交给查询退款API的参数
* @param int timeOut 接口超时时间
* @throws WxPayException
* @return 成功时返回，其他抛异常
*/
public static WxPayData RefundQuery(WxPayData inputObj, int timeOut = 6)
{
string url = "https://api.mch.weixin.qq.com/pay/refundquery";
//检测必填参数
if (!inputObj.IsSet("out_refund_no") && !inputObj.IsSet("out_trade_no") &&
!inputObj.IsSet("transaction_id") && !inputObj.IsSet("refund_id"))
{
throw new WxPayException("退款查询接口中，out_refund_no、out_trade_no、transaction_id、refund_id四个参数必填一个！");
}
inputObj.SetValue("appid", WxPayConfig.APPID); //公众账号ID
inputObj.SetValue("mch_id", WxPayConfig.MCHID); //商户号
inputObj.SetValue("nonce_str", GenerateNonceStr()); //随机字符串
inputObj.SetValue("sign", inputObj.MakeSign()); //签名
string xml = inputObj.ToXml();
var start = DateTime.Now;//请求开始时间
WxPayLog.Debug("WxPayApi", "RefundQuery request : " + xml);
string response = HttpService.Post(xml, url, false, timeOut);//调用HTTP通信接口以提交数据到API
WxPayLog.Debug("WxPayApi", "RefundQuery response : " + response);
var end = DateTime.Now;
int timeCost = (int)((end - start).TotalMilliseconds);//获得接口耗时
//将xml格式的结果转换为对象以返回
WxPayData result = new WxPayData();
result.FromXml(response);
ReportCostTime(url, timeCost, result);//测速上报
return(result);
}
/**
* 下载对账单
* @param WxPayData inputObj 提交给下载对账单API的参数
* @param int timeOut 接口超时时间
* @throws WxPayException
* @return 成功时返回，其他抛异常
*/
public static WxPayData DownloadBill(WxPayData inputObj, int timeOut = 6)
{
string url = "https://api.mch.weixin.qq.com/pay/downloadbill";
//检测必填参数
if (!inputObj.IsSet("bill_date"))
{
throw new WxPayException("对账单接口中，缺少必填参数bill_date！");
}
inputObj.SetValue("appid", WxPayConfig.APPID); //公众账号ID
inputObj.SetValue("mch_id", WxPayConfig.MCHID); //商户号
inputObj.SetValue("nonce_str", GenerateNonceStr()); //随机字符串
inputObj.SetValue("sign", inputObj.MakeSign()); //签名
string xml = inputObj.ToXml();
WxPayLog.Debug("WxPayApi", "DownloadBill request : " + xml);
string response = HttpService.Post(xml, url, false, timeOut);//调用HTTP通信接口以提交数据到API
WxPayLog.Debug("WxPayApi", "DownloadBill result : " + response);
WxPayData result = new WxPayData();
//若接口调用失败会返回xml格式的结果
if (response.Substring(0, 5) == "<xml>")
{
result.FromXml(response);
}
//接口调用成功则返回非xml格式的数据
else
{
result.SetValue("result", response);
}
return(result);
}
/**
* @将xml转为WxPayData对象并返回对象内部的数据
* @param string 待转换的xml串
* @return 经转换得到的Dictionary
* @throws WxPayException
*/
public SortedDictionary <string, object> FromXml(string xml)
{
if (string.IsNullOrEmpty(xml))
{
WxPayLog.Error(this.GetType().ToString(), "将空的xml串转换为WxPayData不合法!");
throw new WxPayException("将空的xml串转换为WxPayData不合法!");
}
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.LoadXml(xml);
XmlNode xmlNode = xmlDoc.FirstChild;//获取到根节点<xml>
XmlNodeList nodes = xmlNode.ChildNodes;
foreach (XmlNode xn in nodes)
{
XmlElement xe = (XmlElement)xn;
m_values[xe.Name] = xe.InnerText;//获取xml的键值对到WxPayData内部的数据中
}
try
{
//2015-06-29 错误是没有签名
if (m_values["return_code"].ToString() != "SUCCESS")
{
return(m_values);
}
CheckSign();//验证签名,不通过会抛异常
}
catch (WxPayException ex)
{
throw new WxPayException(ex.Message);
}
return(m_values);
}
/**
*
* 统一下单
* @param WxPaydata inputObj 提交给统一下单API的参数
* @param int timeOut 超时时间
* @throws WxPayException
* @return 成功时返回，其他抛异常
*/
public static WxPayData UnifiedOrder(WxPayData inputObj, int timeOut = 6)
{
string url = "https://api.mch.weixin.qq.com/pay/unifiedorder";
//检测必填参数
if (!inputObj.IsSet("out_trade_no"))
{
throw new WxPayException("缺少统一支付接口必填参数out_trade_no！");
}
else if (!inputObj.IsSet("body"))
{
throw new WxPayException("缺少统一支付接口必填参数body！");
}
else if (!inputObj.IsSet("total_fee"))
{
throw new WxPayException("缺少统一支付接口必填参数total_fee！");
}
else if (!inputObj.IsSet("trade_type"))
{
throw new WxPayException("缺少统一支付接口必填参数trade_type！");
}
//关联参数
if (inputObj.GetValue("trade_type").ToString() == "JSAPI" && !inputObj.IsSet("openid"))
{
throw new WxPayException("统一支付接口中，缺少必填参数openid！trade_type为JSAPI时，openid为必填参数！");
}
if (inputObj.GetValue("trade_type").ToString() == "NATIVE" && !inputObj.IsSet("product_id"))
{
throw new WxPayException("统一支付接口中，缺少必填参数product_id！trade_type为JSAPI时，product_id为必填参数！");
}
//异步通知url未设置，则使用配置文件中的url
if (!inputObj.IsSet("notify_url"))
{
inputObj.SetValue("notify_url", WxPayConfig.NOTIFY_URL);//异步通知url
}
inputObj.SetValue("appid", WxPayConfig.APPID); //公众账号ID
inputObj.SetValue("mch_id", WxPayConfig.MCHID); //商户号
inputObj.SetValue("spbill_create_ip", System.Web.HttpContext.Current.Request.UserHostAddress); //终端ip
inputObj.SetValue("nonce_str", GenerateNonceStr()); //随机字符串
//签名
inputObj.SetValue("sign", inputObj.MakeSign());
string xml = inputObj.ToXml();
var start = DateTime.Now;
WxPayLog.Debug("WxPayApi", "UnfiedOrder request : " + xml);
string response = HttpService.Post(xml, url, false, timeOut);
WxPayLog.Debug("WxPayApi", "UnfiedOrder response : " + response);
var end = DateTime.Now;
int timeCost = (int)((end - start).TotalMilliseconds);
WxPayData result = new WxPayData();
result.FromXml(response);
ReportCostTime(url, timeCost, result);//测速上报
return(result);
}
/// <summary>
/// 处理http GET请求，返回数据
/// </summary>
/// <param name="url">请求的url地址</param>
/// <returns>http GET成功后返回的数据，失败抛WebException异常</returns>
public static string Get(string url)
{
System.GC.Collect();
string result = "";
HttpWebRequest request = null;
HttpWebResponse response = null;
//请求url以获取数据
try
{
//设置最大连接数
ServicePointManager.DefaultConnectionLimit = 200;
//设置https验证方式
if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
{
ServicePointManager.ServerCertificateValidationCallback =
new RemoteCertificateValidationCallback(CheckValidationResult);
}
/***************************************************************
* 下面设置HttpWebRequest的相关属性
* ************************************************************/
request = (HttpWebRequest)WebRequest.Create(url);
request.Method = "GET";
//设置代理
//WebProxy proxy = new WebProxy();
//proxy.Address = new Uri(WxPayConfig.PROXY_URL);
//request.Proxy = proxy;
//获取服务器返回
response = (HttpWebResponse)request.GetResponse();
//获取HTTP返回数据
StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
result = sr.ReadToEnd().Trim();
sr.Close();
}
catch (System.Threading.ThreadAbortException e)
{
WxPayLog.Error("HttpService", "Thread - caught ThreadAbortException - resetting.");
WxPayLog.Error("Exception message: {0}", e.Message);
System.Threading.Thread.ResetAbort();
}
catch (WebException e)
{
WxPayLog.Error("HttpService", e.ToString());
if (e.Status == WebExceptionStatus.ProtocolError)
{
WxPayLog.Error("HttpService", "StatusCode : " + ((HttpWebResponse)e.Response).StatusCode);
WxPayLog.Error("HttpService", "StatusDescription : " + ((HttpWebResponse)e.Response).StatusDescription);
}
throw;
}
catch (Exception e)
{
WxPayLog.Error("HttpService", e.ToString());
throw;
}
finally
{
//关闭连接和流
if (response != null)
{
response.Close();
}
if (request != null)
{
request.Abort();
}
}
return(result);
}
public static string Post(string xml, string url, bool isUseCert, int timeout)
{
System.GC.Collect(); //垃圾回收，回收没有正常关闭的http连接
string result = ""; //返回结果
HttpWebRequest request = null;
HttpWebResponse response = null;
Stream reqStream = null;
try
{
//设置最大连接数
ServicePointManager.DefaultConnectionLimit = 200;
//设置https验证方式
if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
{
ServicePointManager.ServerCertificateValidationCallback =
new RemoteCertificateValidationCallback(CheckValidationResult);
}
/***************************************************************
* 下面设置HttpWebRequest的相关属性
* ************************************************************/
request = (HttpWebRequest)WebRequest.Create(url);
request.Method = "POST";
request.Timeout = timeout * 1000;
//设置代理服务器
//WebProxy proxy = new WebProxy(); //定义一个网关对象
//proxy.Address = new Uri(WxPayConfig.PROXY_URL); //网关服务器端口:端口
//request.Proxy = proxy;
//设置POST的数据类型和长度
request.ContentType = "text/xml";
byte[] data = System.Text.Encoding.UTF8.GetBytes(xml);
request.ContentLength = data.Length;
//是否使用证书
if (isUseCert)
{
string path = HttpContext.Current.Request.PhysicalApplicationPath;
path = Path.Combine(path, WxPayConfig.SSLCERT_PATH);
X509Certificate2 cert = new X509Certificate2(path, WxPayConfig.SSLCERT_PASSWORD);
request.ClientCertificates.Add(cert);
WxPayLog.Debug("WxPayApi", "PostXml used cert");
}
//往服务器写入数据
reqStream = request.GetRequestStream();
reqStream.Write(data, 0, data.Length);
reqStream.Close();
//获取服务端返回
response = (HttpWebResponse)request.GetResponse();
//获取服务端返回数据
StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
result = sr.ReadToEnd().Trim();
sr.Close();
}
catch (System.Threading.ThreadAbortException e)
{
WxPayLog.Error("HttpService", "Thread - caught ThreadAbortException - resetting.");
WxPayLog.Error("HttpService", string.Format("Exception message: {0}", e.Message));
System.Threading.Thread.ResetAbort();
}
catch (WebException e)
{
WxPayLog.Error("HttpService", string.Format("{1}{0}url : {2}{0}xml : {3}{0}timeout : {4}", Environment.NewLine, e.ToString(), url, xml, timeout));
if (e.Status == WebExceptionStatus.ProtocolError)
{
WxPayLog.Error("HttpService", "StatusCode : " + ((HttpWebResponse)e.Response).StatusCode);
WxPayLog.Error("HttpService", "StatusDescription : " + ((HttpWebResponse)e.Response).StatusDescription);
}
throw;
}
catch (Exception e)
{
WxPayLog.Error("HttpService", string.Format("{1}{0}url : {2}{0}xml : {3}{0}timeout : {4}", Environment.NewLine, e.ToString(), url, xml, timeout));
throw;
}
finally
{
//关闭连接和流
if (response != null)
{
response.Close();
}
if (request != null)
{
request.Abort();
}
}
return(result);
}
/**
* 刷卡支付完整业务流程逻辑
* @param out_trade_no 商户订单号
* @param total_fee 总金额
* @param auth_code 支付授权码
* @throws WxPayException
* @return 刷卡支付结果
*/
public static WxPayData Run(string out_trade_no, int total_fee, string auth_code)
{
WxPayLog.Info("MicroPay", "Micropay is processing...");
WxPayData data = new WxPayData();
data.SetValue("auth_code", auth_code); //授权码
data.SetValue("body", string.Format("{0}订单:{1}", AppConfig.Global.WebSiteName, out_trade_no)); //商品描述
data.SetValue("total_fee", total_fee); //总金额
data.SetValue("out_trade_no", out_trade_no); //商户订单号
WxPayData result = new WxPayData();
try
{
result = WxPayApi.Micropay(data); //提交被扫支付，接收返回结果
//如果提交被扫支付接口调用失败，则抛异常
if (!result.IsSet("return_code") || result.GetValue("return_code").ToString() == "FAIL")
{
string returnMsg = result.IsSet("return_msg") ? result.GetValue("return_msg").ToString() : "";
WxPayLog.Error("MicroPay", "Micropay API interface call failure, result : " + result.ToXml());
throw new WxPayException("Micropay API interface call failure, return_msg : " + returnMsg);
}
//签名验证
result.CheckSign();
WxPayLog.Debug("MicroPay", "Micropay response check sign success");
//刷卡支付直接成功
if (result.GetValue("return_code").ToString() == "SUCCESS" &&
result.GetValue("result_code").ToString() == "SUCCESS")
{
WxPayLog.Debug("MicroPay", "Micropay business success, result : " + result.ToXml());
return(result);
}
}
catch (Exception ex)
{
//如果不是HTTP请求超时，则抛出异常（背景：存在支付请求超时但微信已扣款的情况，需要查询支付记录才能确认是否已扣款）
if (!HttpService.IsHttpTimeout(ex))
{
throw;
}
}
/******************************************************************
* 剩下的都是接口调用成功，业务失败的情况
* ****************************************************************/
//1）业务结果明确失败
if (result.IsSet("err_code") &&
result.GetValue("err_code").ToString() != "USERPAYING" &&
result.GetValue("err_code").ToString() != "SYSTEMERROR")
{
WxPayLog.Error("MicroPay", "micropay API interface call success, business failure, result : " + result.ToXml());
return(result);
}
//2）不能确定是否失败，需查单
//用商户订单号去查单
out_trade_no = data.GetValue("out_trade_no").ToString();
bool success = false;
WxPayData queryResult = Query(out_trade_no, out success);
if (success)
{
return(queryResult);
}
else if (queryResult == null)
{
//长时间未完成交易，则撤销订单
WxPayLog.Error("MicroPay", "Micropay failure, Reverse order is processing...");
if (!Cancel(out_trade_no))
{
WxPayLog.Error("MicroPay", "Reverse order failure");
throw new WxPayException("Reverse order failure！");
}
}
return(result);
}
