/// <summary>
/// 调用微信支付请求通用接口
/// </summary>
public TResponse Excute <TResponse>(IWechatPayRequest <TResponse> request) where TResponse : WechatPayResponse
{
if (request == null)
{
throw new ArgumentNullException("request");
}
if (string.IsNullOrEmpty(this.Charset))
{
this.Charset = "utf-8";
}
//插入默认请求参数
var parameters = request.GetParameters();
parameters[STR_APPID] = AppId;
parameters[STR_MCHID] = MchId;
parameters[STR_NONCE_STR] = WechatExtensions.CreateNonceStr(16);
parameters[STR_SIGN] = WechatSignature.Create(parameters, "key=" + MchKey);
//证书
X509Certificate2 cert = null;
if (request.NeedCert)
{
cert = new X509Certificate2(CertificatePath, MchId);
}
var body = webUtils.DoPost(request.ApiUrl, parameters, cert, Charset);
//XML解析返回内容
IWechatParser <TResponse> rsp = new WechatXmlParser <TResponse>();
TResponse response = rsp.Parse(body, Charset);
var dicCheck = new Dictionary <string, string>(response.Parameters);
dicCheck.Remove(STR_SIGN);
//验证签名 有时如果缺少参数返回信息没有签名
if (response.Parameters.ContainsKey(STR_SIGN))
{
bool check = WechatSignature.Check(response.Parameters[STR_SIGN], dicCheck, "key=" + MchKey);
if (!check)
{
throw new Exception("签名验证失败");
}
}
return(response);
}
/// <summary>
/// 解析支付消息通知文本并验证消息
/// </summary>
/// <param name="content">微信支付消息内容</param>
/// <param name="mchKey">商户密钥</param>
/// <returns>微信支付消息</returns>
public static WechatPayNotifyResult ParserNotifyAndCheck(string content, string mchKey)
{
if (string.IsNullOrEmpty(content))
{
throw new ArgumentNullException("content");
}
var Parser = new WechatXmlParser <WechatPayNotifyResult>();
var result = Parser.Parse(content, "utf-8");
var dicCheck = new Dictionary <string, string>(result.Parameters);
dicCheck.Remove("sign");
//验证签名 有时如果缺少参数返回信息没有签名
if (result.Parameters.ContainsKey("sign"))
{
bool check = WechatSignature.Check(result.Parameters["sign"], dicCheck, "key=" + mchKey);
if (!check)
{
throw new Exception("签名验证失败");
}
}
return(result);
}