/// <summary>
/// 检测签名是否正确
/// 正确返回true，错误抛异常
/// </summary>
/// <returns></returns>
public bool CheckSign()
{
//如果没有设置签名，则跳过检测
if (!IsSet("sign"))
{
WeChatLog.Error(this.GetType().ToString(), "WeChatPayData签名存在但不合法!");
throw new WeChatPayException("WeChatPayData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() == "")
{
WeChatLog.Error(this.GetType().ToString(), "WeChatPayData签名存在但不合法!");
throw new WeChatPayException("WeChatPayData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;
}
WeChatLog.Error(this.GetType().ToString(), "WeChatPayData签名验证错误!");
throw new WeChatPayException("WeChatPayData签名验证错误!");
}
/// <summary>
/// @将xml转为WeChatPayData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 WeChatPayException
/// </summary>
/// <param name="xml"></param>
/// <returns></returns>
public SortedDictionary<string, object> FromXml(string xml)
{
if (string.IsNullOrEmpty(xml))
{
WeChatLog.Error(this.GetType().ToString(), "将空的xml串转换为WeChatPayData不合法!");
throw new WeChatPayException("将空的xml串转换为WeChatPayData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WeChatPayData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 (WeChatPayException ex)
{
throw new WeChatPayException(ex.Message);
}
return m_values;
}
/// <summary>
/// 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WeChatPayException
/// </summary>
/// <returns></returns>
public WeChatPayData GetUnifiedOrderResult(int total_fee, string openid)
{
//统一下单
WeChatPayData data = new WeChatPayData();
string str = GenerateOutTradeNo();
data.SetValue("body", "");
data.SetValue("attach", "");
data.SetValue("out_trade_no", str);
data.SetValue("total_fee", total_fee);
data.SetValue("time_start", DateTime.Now.ToString("yyyyMMddHHmmss"));
data.SetValue("time_expire", DateTime.Now.AddMinutes(10).ToString("yyyyMMddHHmmss"));
data.SetValue("goods_tag", "WXG");
data.SetValue("trade_type", "JSAPI");
data.SetValue("openid", openid);
WeChatPayData result = UnifiedOrder(data);
if (!result.IsSet("appid") || !result.IsSet("prepay_id") || result.GetValue("prepay_id").ToString() == "")
{
WeChatLog.Error(this.GetType().ToString(), "UnifiedOrder response error!");
throw new WeChatPayException("UnifiedOrder response error!");
}
return(result);
}
/// <summary>
/// @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
/// </summary>
/// <returns></returns>
public string ToUrl()
{
string buff = "";
foreach (KeyValuePair<string, object> pair in m_values)
{
if (pair.Value == null)
{
WeChatLog.Error(this.GetType().ToString(), "WeChatPayData内部含有值为null的字段!");
throw new WeChatPayException("WeChatPayData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>
/// @将Dictionary转成xml
/// @return 经转换得到的xml串
/// @throws WeChatPayException
/// </summary>
/// <returns></returns>
public string ToXml()
{
//数据为空时不能转化为xml格式
if (0 == m_values.Count)
{
WeChatLog.Error(this.GetType().ToString(), "WeChatPayData数据为空!");
throw new WeChatPayException("WeChatPayData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)
{
WeChatLog.Error(this.GetType().ToString(), "WeChatPayData内部含有值为null的字段!");
throw new WeChatPayException("WeChatPayData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
{
WeChatLog.Error(this.GetType().ToString(), "WeChatPayData字段数据类型错误!");
throw new WeChatPayException("WeChatPayData字段数据类型错误!");
}
}
xml += "</xml>";
return xml;
}
/// <summary>
/// 处理http POST请求，返回数据
/// </summary>
/// <param name="xml">请求参数</param>
/// <param name="url">请求的url地址</param>
/// <param name="isUseCert">是否启用证书</param>
/// <param name="timeout">请求超时时间</param>
/// <returns></returns>
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(WeChatPayConfig.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 = AppContext.BaseDirectory;// HttpContent.Current.Request.PhysicalApplicationPath;
//X509Certificate2 cert = new X509Certificate2(path + WeChatPayConfig.SSLCERT_PATH, WeChatPayConfig.SSLCERT_PASSWORD);
//request.ClientCertificates.Add(cert);
X509Certificate2 cer = new X509Certificate2(path + WeChatPayConfig.SSLCERT_PATH, WeChatPayConfig.SSLCERT_PASSWORD, X509KeyStorageFlags.MachineKeySet | X509KeyStorageFlags.PersistKeySet | X509KeyStorageFlags.Exportable);
request.ClientCertificates.Add(cer);
WeChatLog.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)
{
// Log.Error("HttpService", "Thread - caught ThreadAbortException - resetting.");
// Log.Error("Exception message: {0}", e.Message);
System.Threading.Thread.ResetAbort();
}
catch (WebException e)
{
// Log.Error("HttpService", e.ToString());
if (e.Status == WebExceptionStatus.ProtocolError)
{
WeChatLog.Error("HttpService", "StatusCode : " + ((HttpWebResponse)e.Response).StatusCode);
WeChatLog.Error("HttpService", "StatusDescription : " + ((HttpWebResponse)e.Response).StatusDescription);
}
throw new WeChatPayException(e.ToString());
}
catch (Exception e)
{
WeChatLog.Error("HttpService", e.ToString());
throw new WeChatPayException(e.ToString());
}
finally
{
//关闭连接和流
if (response != null)
{
response.Close();
}
if (request != null)
{
request.Abort();
}
}
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(WeChatPayConfig.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)
{
// Log.Error("HttpService", "Thread - caught ThreadAbortException - resetting.");
WeChatLog.Error("Exception message: {0}", e.Message);
System.Threading.Thread.ResetAbort();
}
catch (WebException e)
{
WeChatLog.Error("HttpService", e.ToString());
if (e.Status == WebExceptionStatus.ProtocolError)
{
WeChatLog.Error("HttpService", "StatusCode : " + ((HttpWebResponse)e.Response).StatusCode);
WeChatLog.Error("HttpService", "StatusDescription : " + ((HttpWebResponse)e.Response).StatusDescription);
}
throw new WeChatPayException(e.ToString());
}
catch (Exception e)
{
WeChatLog.Error("HttpService", e.ToString());
throw new WeChatPayException(e.ToString());
}
finally
{
//关闭连接和流
if (response != null)
{
response.Close();
}
if (request != null)
{
request.Abort();
}
}
return(result);
}