/// <summary>
/// 刷新票据凭证
/// </summary>
/// <param name="accessToken"></param>
/// <returns></returns>
public static string RefreshAccessToken(string accessToken)
{
lock ( locker )
{
if (WechatApi.AccessToken != accessToken)
{
return(WechatApi.AccessToken);
}
AccessTokenResponseMessage response = WechatApi.GetAccessTokenFromWechat();
WechatAccessToken token = new WechatAccessToken();
token.AppId = ConfigurationManager.AppSettings["AppId"];
token.AccessToken = response.AccessToken;
token.ExpiresIn = response.ExpiresIn;
token.UpdateTime = DateTime.Now;
RedisHelper redis = new RedisHelper();
redis.StringSet <WechatAccessToken>(token.AppId, token);
WechatApi.AccessToken = token.AccessToken;
return(WechatApi.AccessToken);
}
}
public string GetSignature(string url)
{
Dictionary <string, string> dic = new Dictionary <string, string>();
dic.Add("noncestr", nonceStr);
dic.Add("jsapi_ticket", WechatApi.GetAccessTokenAndRefresh());
dic.Add("timestamp", timestamp);
dic.Add("url", url);
Dictionary <string, string> sortDic = dic.OrderBy(e => e.Key).ToDictionary(k => k.Key, v => v.Value);
StringBuilder sb = new StringBuilder();
foreach (KeyValuePair <string, string> pair in sortDic)
{
sb.Append(pair.Key);
sb.Append("=");
sb.Append(pair.Value);
sb.Append("&");
}
sb.Remove(sb.Length - 1, 1);
string sign = StringCoding.EncodeSHA1(sb.ToString()).ToLower();
LogHelper.Info(String.Format("WxPayJsConfig GetSignature：{0} -> {1}", sb.ToString(), sign));
return(sign);
}
/// <summary>
/// 获取票据凭证
/// </summary>
/// <returns></returns>
public static string GetAccessToken()
{
lock ( locker )
{
if (string.IsNullOrEmpty(WechatApi.AccessToken))
{
WechatAccessToken token = WechatApi.GetAccessTokenFromDb();
if (token == null)
{
AccessTokenResponseMessage response = WechatApi.GetAccessTokenFromWechat();
token = new WechatAccessToken();
token.AppId = ConfigurationManager.AppSettings["AppId"];
token.AccessToken = response.AccessToken;
token.ExpiresIn = response.ExpiresIn;
token.UpdateTime = DateTime.Now;
RedisHelper redis = new RedisHelper();
redis.StringSet <WechatAccessToken>(token.AppId, token);
WechatApi.AccessToken = token.AccessToken;
}
else
{
WechatApi.AccessToken = token.AccessToken;
}
}
return(WechatApi.AccessToken);
}
}
/// <summary>
/// 获取微信用户 Access Token
/// </summary>
/// <param name="code"></param>
/// <returns></returns>
public static UserAccessTokenResponseMessage GetUserAccessToken(string code)
{
string url = string.Format("https://api.weixin.qq.com/sns/oauth2/access_token?appid={0}&secret={1}&code={2}&grant_type=authorization_code",
ConfigurationManager.AppSettings["AppId"],
ConfigurationManager.AppSettings["AppSecret"],
code);
UserAccessTokenResponseMessage response = WechatApi.GetWechatApi <UserAccessTokenResponseMessage>(url);
if (response.ErrorCode.HasValue && response.ErrorCode.Value != 0)
{
throw new WechatApiInvokeException(response.ErrorCode.Value, response.ErrorMessage, url);
}
return(response);
}
/// <summary>
/// 从微信服务器获取票据凭证
/// </summary>
/// <returns></returns>
public static AccessTokenResponseMessage GetAccessTokenFromWechat()
{
string url = string.Format("https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid={0}&secret={1}",
ConfigurationManager.AppSettings["AppId"],
ConfigurationManager.AppSettings["AppSecret"]);
LogHelper.Info("正在调用接口获取票据凭证...");
AccessTokenResponseMessage response = WechatApi.GetWechatApi <AccessTokenResponseMessage>(url);
LogHelper.Info("已获取票据凭证。");
if (response.ErrorCode.HasValue && response.ErrorCode.Value != 0)
{
throw new WechatApiInvokeException(response.ErrorCode.Value, response.ErrorMessage, url);
}
return(response);
}
private static T PostWechatApiWithToken <T>(string rawUrl, string request) where T : WechatApiResponseMessage
{
string accessToken = WechatApi.GetAccessToken();
string url = rawUrl + "access_token=" + accessToken;
T response = WechatApi.PostWechatApi <T>(url, request);
if (response.ErrorCode.HasValue)
{
switch (response.ErrorCode.Value)
{
case 0:
break;
// 如果是票据过期问题，则重新获取票据
case 40001:
case 40014:
case 42001:
LogHelper.Info(string.Format("调用微信接口时票据凭证无效或过期, errcode : {0}, errmsg : {1}, interface : {2}", response.ErrorCode, response.ErrorMessage, url));
// 重新获取票据凭证
accessToken = WechatApi.RefreshAccessToken(accessToken);
url = rawUrl + "access_token=" + accessToken;
response = WechatApi.PostWechatApi <T>(url, request);
if (response.ErrorCode.HasValue && response.ErrorCode.Value != 0)
{
throw new WechatApiInvokeException(response.ErrorCode.Value, response.ErrorMessage, url);
}
break;
default:
throw new WechatApiInvokeException(response.ErrorCode.Value, response.ErrorMessage, url);
}
}
return(response);
}
public static string GetTicket()
{
string accessToken = WechatApi.GetAccessToken();
string url1 = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=" + accessToken + "&type=jsapi";
string responseInfo = WechatApi.HttpGet(url1);
WechatTicketResponse response = JsonConvert.DeserializeObject <WechatTicketResponse>(responseInfo);
if (response.errcode == 42001)
{
WechatApi.RefreshAccessToken(accessToken);
accessToken = WechatApi.GetAccessToken();
url1 = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=" + accessToken + "&type=jsapi";
responseInfo = WechatApi.HttpGet(url1);
WechatTicketResponse responseLast = JsonConvert.DeserializeObject <WechatTicketResponse>(responseInfo);
return(responseLast.ticket);
}
else
{
string ticket = response.ticket;
return(ticket);
}
}
/// <summary>
/// 获取微信服务器的IP地址
/// </summary>
/// <returns></returns>
public static CallbackIpResponseMessage GetCallbackIp()
{
string rawUrl = "https://api.weixin.qq.com/cgi-bin/getcallbackip?";
return(WechatApi.GetWechatApiWithToken <CallbackIpResponseMessage>(rawUrl));
}
/// <summary>
/// 发送文本消息
/// </summary>
/// <param name="message"></param>
/// <returns></returns>
public static void SendTextMessage(CustomTextMessage message)
{
WechatApi.SendCustomMessage(message);
}
public static void SendCustomTemplateMessage(string message)
{
string rawUrl = "https://api.weixin.qq.com/cgi-bin/message/template/send?";
WechatApi.PostWechatApiWithToken <WechatApiTemplateResponseMessage>(rawUrl, message);
}
/// <summary>
/// 调用客服接口向用户推送消息
/// </summary>
/// <param name="message"></param>
/// <returns></returns>
public static void SendCustomMessage(CustomMessage message)
{
string rawUrl = "https://api.weixin.qq.com/cgi-bin/message/custom/send?";
WechatApi.PostWechatApiWithToken <WechatApiResponseMessage>(rawUrl, message);
}
private static T PostWechatApi <T>(string url, string request) where T : WechatApiResponseMessage
{
string body = WechatApi.HttpPost(url, request);
return(JsonConvert.DeserializeObject <T>(body));
}
/// <summary>
/// 通过 GET 方式调用微信 API
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="rawUrl"></param>
/// <returns></returns>
private static T GetWechatApi <T>(string rawUrl) where T : WechatApiResponseMessage
{
string responseBody = WechatApi.HttpGet(rawUrl);
return(JsonConvert.DeserializeObject <T>(responseBody));
}
