/// <summary>
/// 缓存并获取调用微信公众号接口的全局唯一票据
/// </summary>
/// <param name="appId">设置应用的APPID</param>
/// <param name="secret">设置应用的APPSECRET</param>
/// <returns>如果缓存的票据有效，则返回缓存的票据字符串，否则调用接口重新获取票据信息</returns>
public static string GetAccessToken(string appId, string secret)
{
HttpApplicationState apps = HttpContext.Current.Application;
SortedDictionary<string, object> cache = null;
string accessToken = null;
if (apps[CACHEKEYNAME] != null)
cache = apps[CACHEKEYNAME] as SortedDictionary<string, object>;
if (!General.IsNullable(cache))
{
DateTime saveTime = Convert.ToDateTime(cache["last_save_time"]);
int cost = (int)(DateTime.Now - saveTime).TotalSeconds;
int expires = Convert.ToInt32(cache["expires_in"]);
if (cost < expires)
accessToken = cache["access_token"].ToString();
}
if (General.IsNullable(accessToken))
{
if (!General.IsNullable(appId) && !General.IsNullable(secret))
{
string url = "https://api.weixin.qq.com/cgi-bin/token";
WxParameters paras = new WxParameters();
paras.SetValue("grant_type", "client_credential");
paras.SetValue("appid", appId);
paras.SetValue("secret", secret);
NetClient client = new NetClient();
string response = client.Get(url, paras.Parameters);
WxParameters result = new WxParameters();
if (result.FromJson(response))
{
if (result.ContainsValue("access_token") && result.ContainsValue("expires_in"))
{
cache = result.Parameters;
cache.Add("last_save_time", DateTime.Now);
apps[CACHEKEYNAME] = cache;
accessToken = result["access_token"] as string;
}
}
}
}
return accessToken;
}
/// <summary>
/// 通过登录授权的验证信息凭证获取用户个人信息
/// </summary>
/// <param name="accessToken">设置登录授权的验证信息凭证</param>
/// <param name="userId">设置用户唯一标识，一般为用户的OpenId，如果使用了微信的开放平台则为UnionId</param>
/// <returns>返回授权后获取到的用户个人信息</returns>
public static UserInfoResults GetUserInfoResults(string accessToken, string userId)
{
UserInfoResults results = null;
if (!General.IsNullable(accessToken) && !General.IsNullable(userId))
{
string url = "https://api.weixin.qq.com/sns/userinfo?";
WxParameters paras = new WxParameters();
paras.SetValue("access_token", accessToken);
paras.SetValue("openid", userId);
NetClient client = new NetClient();
string json = client.Get(url, paras.Parameters);
results = UserInfoResults.Pares(json);
}
return results;
}
/// <summary>
///
/// </summary>
/// <param name="appId"></param>
/// <param name="secret"></param>
/// <param name="isDebug"></param>
/// <param name="readyScript"></param>
/// <param name="errorScript"></param>
public static void Initialization(string appId, string secret, bool isDebug = false, string readyScript = null, string errorScript = null)
{
if (!General.IsNullable(appId))
{
StringBuilder javascript = new StringBuilder();
string timestamp = DateTime.Now.ToString("yyyyMMddHHmmss");
string nonceStr = General.UniqueString();
WxParameters paras = new WxParameters();
paras.SetValue("debug", isDebug);
paras.SetValue("appId", appId);
paras.SetValue("timestamp", timestamp);
paras.SetValue("nonceStr", nonceStr);
paras.SetValue("signature", MakeSign(appId, secret, nonceStr, timestamp));
paras.SetValue("jsApiList", _jsApiList);
javascript.AppendLine("(function($){");
javascript.AppendLine(" if(typeof wx != \"undefined\"){");
javascript.AppendLine(" wx.config(");
javascript.AppendLine(" " + paras.ToJson());
javascript.AppendLine(" );");
javascript.AppendLine(" wx.ready(function(){");
javascript.AppendLine(" " + readyScript);
javascript.AppendLine(" });");
javascript.AppendLine(" wx.error(function(result){");
javascript.AppendLine(" " + errorScript);
javascript.AppendLine(" });");
javascript.AppendLine(" }");
javascript.AppendLine("})(jQuery);");
Helper.ExecScript(javascript.ToString());
}
}
/// <summary>
/// 通过code获取验证信息凭证
/// </summary>
/// <param name="appId">设置应用的唯一标识</param>
/// <param name="secret">设置应用密钥，这个密钥是在微信开放平台提交应用审核通过后获得的</param>
/// <param name="code">设置微信服务端返回的code字符串</param>
/// <returns>返回微信服务端响应的验证信息凭证</returns>
public static AuthorizationResults GetAccessTokenResults(string appId, string secret, string code)
{
AuthorizationResults results = null;
if (!General.IsNullable(appId) && !General.IsNullable(code) && !General.IsNullable(secret))
{
string url = "https://api.weixin.qq.com/sns/oauth2/access_token?";
WxParameters paras = new WxParameters();
paras.SetValue("appid", appId);
paras.SetValue("secret", secret);
paras.SetValue("code", code);
paras.SetValue("grant_type", "authorization_code");
NetClient client = new NetClient();
string json = client.Get(url, paras.Parameters);
results = AuthorizationResults.Pares(json);
}
return results;
}
private static string MakeSign(string appId, string secret, string nonceStr, string timeStamp)
{
string ticket = GetTicket(appId, secret);
string sign = string.Empty;
if (!General.IsNullable(ticket))
{
WxParameters paras = new WxParameters();
paras.SetValue("noncestr", nonceStr);
paras.SetValue("jsapi_ticket", ticket);
paras.SetValue("timestamp", timeStamp);
paras.SetValue("url", HttpContext.Current.Request.Url.AbsoluteUri);
string make = paras.ToQueryString();
StringBuilder md = new StringBuilder();
byte[] buffer = SHA1.Create().ComputeHash(Encoding.UTF8.GetBytes(make));
foreach (byte b in buffer)
md.Append(b.ToString("x2"));
sign = md.ToString();
}
return sign;
}
private static string GetTicket(string appId, string secret)
{
HttpApplicationState apps = HttpContext.Current.Application;
SortedDictionary<string, object> cache = null;
string ticket = null;
if (apps[CACHEKEYNAME] != null)
cache = apps[CACHEKEYNAME] as SortedDictionary<string, object>;
if (!General.IsNullable(cache))
{
DateTime saveTime = Convert.ToDateTime(cache["last_save_time"]);
int cost = (int)(DateTime.Now - saveTime).TotalSeconds;
int expires = Convert.ToInt32(cache["expires_in"]);
if (cost < expires)
ticket = cache["ticket"] as string;
}
if (General.IsNullable(ticket))
{
if (!General.IsNullable(appId) && !General.IsNullable(secret))
{
string accessToken = InterfaceCredentials.GetAccessToken(appId, secret);
string url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket";
WxParameters paras = new WxParameters();
paras.SetValue("access_token", accessToken);
paras.SetValue("type", "jsapi");
NetClient client = new NetClient();
string response = client.Get(url, paras.Parameters);
WxParameters result = new WxParameters();
if (result.FromJson(response))
{
if (result.ContainsValue("ticket") && result.ContainsValue("expires_in"))
{
cache = result.Parameters;
cache.Remove("errcode");
cache.Remove("errmsg");
cache.Add("last_save_time", DateTime.Now);
apps[CACHEKEYNAME] = cache;
ticket = result["ticket"] as string;
}
}
}
}
return ticket;
}
/// <summary>
/// 使用指定的处理过程来处理微信支付结果通知的回调
/// </summary>
/// <param name="callBack">设置处理方法，该方法需返回一个布尔值来指示处理是否成功</param>
public static void NotifyCall(NotifyCallBack callBack)
{
bool flag = true;
OrderPayResultParameters results = OrderPayResultParameters.RequestPares();
if (callBack != null)
flag = callBack.Invoke(results);
WxParameters paras = new WxParameters();
paras.SetValue("return_code", (flag ? "SUCCESS" : "FAIL"));
paras.SetValue("return_msg", (flag ? "OK" : "UNIFIED ORDER ERROR"));
HttpContext.Current.Response.Write(paras.ToXML());
}
/// <summary>
/// 在微信浏览器内生成公众号预支付订单
/// </summary>
/// <param name="reportCost">设置是否需要上报测速</param>
/// <returns>预支付订单生成成功则返回一段JavaScript脚本，这段脚本可以在基于HTML5的客户端网页中发起微信支付流程</returns>
public string PublicPlaceOrder(bool reportCost = false)
{
ResultParameters results = this.Results;
if (PlaceOrder(PayTradeType.JSAPI, reportCost))
{
if (results.IsResultSuccess)
{
StringBuilder js = new StringBuilder();
WxParameters paras = new WxParameters();
paras.SetValue("appId", results.AppId);
paras.SetValue("api_key", this.Submits.ApiKey);
paras.SetValue("timeStamp", Convert.ToInt64((DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, 0)).TotalSeconds).ToString());
paras.SetValue("nonceStr", General.UniqueString());
paras.SetValue("package", "prepay_id=" + results.PrepayId);
paras.SetValue("signType", "MD5");
paras.SetValue("paySign", paras.MakeSign());
js.AppendLine("function __onWxPayBridgeReady() {");
js.AppendLine(" WeixinJSBridge.invoke(");
js.AppendLine(" \"getBrandWCPayRequest\",");
js.AppendLine(" " + paras.ToJson() + ",");
js.AppendLine(" function (result) {");
js.AppendLine(" if(typeof window[\"onBrandWCPayResponse\"] == \"function\") {");
js.AppendLine(" var __response = result.err_msg.replace(\"get_brand_wcpay_request:\",\"\");");
js.AppendLine(" onBrandWCPayResponse(__response, result);");
js.AppendLine(" }");
js.AppendLine(" }");
js.AppendLine(" );");
js.AppendLine("}");
js.AppendLine();
js.AppendLine("function __toggleWxPayBridge() {");
js.AppendLine(" if (typeof WeixinJSBridge == \"undefined\"){");
js.AppendLine(" if (document.addEventListener){");
js.AppendLine(" document.addEventListener(\"WeixinJSBridgeReady\", __onWxPayBridgeReady, false);");
js.AppendLine(" }");
js.AppendLine(" else if(document.attachEvent){");
js.AppendLine(" document.attachEvent(\"WeixinJSBridgeReady\", __onWxPayBridgeReady);");
js.AppendLine(" document.attachEvent(\"onWeixinJSBridgeReady\", __onWxPayBridgeReady);");
js.AppendLine(" }");
js.AppendLine(" }");
js.AppendLine(" else{");
js.AppendLine(" __onWxPayBridgeReady();");
js.AppendLine(" }");
js.AppendLine("}");
//return paras.ToJson();
return js.ToString();
}
}
return null;
}
/// <summary>
/// 使当前第三方站点跳转到微信授权URI地址，并获取Code
/// </summary>
/// <param name="appId">设置微信应用的唯一标识</param>
/// <param name="redirectUri">设置授权后重定向的回调链接地址，如果不设置则默认使用当前第三方站点的当前URL</param>
/// <param name="scope">设置应用授权作用域</param>
/// <param name="state">设置自定义的状态参数，如果不设置，则默认情况下生成一个字符串</param>
public static void RedirectConnectCode(string appId, string redirectUri, string scope, string state = null)
{
if (!General.IsNullable(appId))
{
HttpResponse response = HttpContext.Current.Response;
scope = General.ToNullable(scope, AuthorizationScope.USERINFO);
string url = string.Format("https://open.weixin.qq.com/connect/{0}?", scope.Equals(AuthorizationScope.PCLOGIN) ? "qrconnect" : "oauth2/authorize");
if (General.IsNullable(redirectUri))
{
Uri uri = HttpContext.Current.Request.Url;
redirectUri = string.Format("{0}://{1}{2}", uri.Scheme, uri.Authority, uri.AbsolutePath);
}
WxParameters paras = new WxParameters();
paras.SetValue("appid", appId);
paras.SetValue("redirect_uri", HttpUtility.UrlEncode(redirectUri, Encoding.UTF8));
paras.SetValue("response_type", "code");
paras.SetValue("scope", scope);
paras.SetValue("state", General.ToNullable(state, General.UniqueString()) + "#wechat_redirect");
url += paras.ToQueryString();
response.Redirect(url);
}
}