public static Access_token GetAccessTokenFromWX()
{
string appid = System.Configuration.ConfigurationManager.AppSettings["appid"].ToString(); //; "wx072d7c1098af8577";
string secret = System.Configuration.ConfigurationManager.AppSettings["secret"].ToString(); //; "67cc96a576ea08739dfef2c5a18d4172";
string strUrl = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" + appid + "&secret=" + secret;
Access_token mode = new Access_token();
HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(strUrl);
req.Method = "GET";
using (WebResponse wr = req.GetResponse())
{
HttpWebResponse myResponse = (HttpWebResponse)req.GetResponse();
StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8);
string content = reader.ReadToEnd();
//Response.Write(content);
//在这里对Access_token 赋值
Access_token token = new Access_token();
token = JSBase.JsonHelper.ParseFromJson <Access_token>(content);
mode.access_token = token.access_token;
mode.expires_in = token.expires_in;
}
return(mode);
}
public string GetAccessToken()
{
string Token = string.Empty;
DateTime YouXRQ;
// 读取XML文件中的数据，并显示出来 ，注意文件路径
string filepath;// = Server.MapPath("XMLFile.xml");
filepath = System.Web.Hosting.HostingEnvironment.MapPath("/");
//if (MyServer == null)
// filepath = Server.MapPath("/");
//else
// filepath = MyServer.MapPath("/");
filepath = filepath + "\\wechat\\XMLFile.xml";
if (System.IO.File.Exists(filepath))
{
StreamReader str = new StreamReader(filepath, System.Text.Encoding.UTF8);
XmlDocument xml = new XmlDocument();
xml.Load(str);
str.Close();
str.Dispose();
Token = xml.SelectSingleNode("xml").SelectSingleNode("Access_Token").InnerText;
YouXRQ = Convert.ToDateTime(xml.SelectSingleNode("xml").SelectSingleNode("Access_YouXRQ").InnerText);
if (DateTime.Now > YouXRQ)
{
DateTime _youxrq = DateTime.Now;
Access_token mode = GetAccessTokenFromWX();
xml.SelectSingleNode("xml").SelectSingleNode("Access_Token").InnerText = mode.access_token;
_youxrq = _youxrq.AddSeconds(int.Parse(mode.expires_in));
xml.SelectSingleNode("xml").SelectSingleNode("Access_YouXRQ").InnerText = _youxrq.ToString();
xml.Save(filepath);
Token = mode.access_token;
}
}
else
{
if (!System.IO.Directory.Exists(filepath.Substring(0, filepath.LastIndexOf("\\"))))
{
System.IO.Directory.CreateDirectory(filepath.Substring(0, filepath.LastIndexOf("\\")));
}
XmlDocument xml = new XmlDocument();
DateTime _youxrq = DateTime.Now;
Access_token mode = GetAccessTokenFromWX();
XmlElement x = xml.CreateElement("xml");
xml.AppendChild(x);
XmlElement Access_Token = xml.CreateElement("Access_Token");
Access_Token.InnerText = mode.access_token;
x.AppendChild(Access_Token);
XmlElement Access_YouXRQ = xml.CreateElement("Access_YouXRQ");
_youxrq = _youxrq.AddSeconds(int.Parse(mode.expires_in));
Access_YouXRQ.InnerText = _youxrq.ToString();
x.AppendChild(Access_YouXRQ);
//xml.SelectSingleNode("xml").SelectSingleNode("Access_Token").InnerText = mode.access_token;
//xml.SelectSingleNode("xml").SelectSingleNode("Access_YouXRQ").InnerText = _youxrq.ToString();
xml.Save(filepath);
Token = mode.access_token;
}
return(Token);
}