/// <summary>
/// 根据当前日期 判断Access_Token 是否超期 如果超期返回新的Access_Token 否则返回之前的Access_Token
/// </summary>
/// <param name="datetime"></param>
/// <returns></returns>
public static string IsExistAccess_Token()
{
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 = System.Web.HttpContext.Current.Server.MapPath("/uploadfiles/wxxml.xml");
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 = GetAccess_token();
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;
}
return(Token);
}
/// <summary>
/// 得到微信生成的Access_token
/// </summary>
/// <param name="return">无返回值</param>
/// <param name="逻辑说明"></param>
/// <param>修改备注</param>
/// 2014-5-20 林建生
///
public static Access_token GetAccess_token()
{
string appid = System.Web.Configuration.WebConfigurationManager.AppSettings["AppId"].ToString();
string secret = System.Web.Configuration.WebConfigurationManager.AppSettings["AppSecret"].ToString();
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
JObject jb = JObject.Parse(content);
//string name = o["n"].ToString();
//Response.Write(name);
//Access_token token = new Access_token();
//token = JsonHelper.ParseFromJson<Access_token>(content);
mode.access_token = jb["access_token"].ToString();
mode.expires_in = jb["expires_in"].ToString();
}
return(mode);
}
/// <SUMMARY>
/// 上传多媒体文件,返回 MediaId
/// </SUMMARY>
/// <PARAM name="ACCESS_TOKEN"></PARAM>
/// <PARAM name="Type"></PARAM>
/// <RETURNS></RETURNS>
public static string UploadMultimedia(string Openid)
{
string result = "";
try
{
using (EFDB db = new EFDB())
{
var query = db.Member.Where(l => l.Openid == Openid).FirstOrDefault();
if (query != null)
{
string gid = query.Account;
string ACCESS_TOKEN = Access_token.IsExistAccess_Token();
//生成二维码
//if (!File.Exists(System.Web.HttpContext.Current.Server.MapPath("/uploadfiles/ewmmp/" + gid + ".jpg")))
//{
// string strUrl = "https://api.weixin.qq.com/cgi-bin/qrcode/create?access_token=" + ACCESS_TOKEN;
// string postData = "{\"action_name\": \"QR_LIMIT_STR_SCENE\", \"action_info\": {\"scene\": {\"scene_str\": \"" + gid + "\"}}}";
// JObject jb = JObject.Parse(GetPage(strUrl, postData));
// Common.imgaddimg.Cewm(Common.QRCode.Create_ImgCode(jb["url"].ToString(), 11), gid);
//}
//获取图片上传服务器
//System.Drawing.Image ewm = System.Drawing.Image.FromFile(System.Web.HttpContext.Current.Server.MapPath("/uploadfiles/ewmmp/" + gid + ".jpg"));
//string path = System.Web.HttpContext.Current.Server.MapPath("/uploadfiles/ewmmp/");
//System.Drawing.Image img = Common.imgaddimg.Ctjr(null, gid);
//img.Save(path + gid.Replace("-", "") + ".jpg");
//img.Dispose();
if (!Directory.Exists(System.Web.HttpContext.Current.Server.MapPath("/uploadfiles/ewmmp/") + gid + ".jpg"))
{
//Common.imgaddimg.Ctjr(gid);
}
//开始上传
string wxurl = "https://api.weixin.qq.com/cgi-bin/media/upload?access_token=" + ACCESS_TOKEN + "&type=image";
string filepath = System.Web.HttpContext.Current.Server.MapPath("/uploadfiles/ewmmp/") + gid + ".jpg";
WebClient myWebClient = new WebClient();
myWebClient.Credentials = CredentialCache.DefaultCredentials;
byte[] responseArray = myWebClient.UploadFile(wxurl, "POST", filepath);
result = System.Text.Encoding.Default.GetString(responseArray, 0, responseArray.Length);
JObject wxjb = JObject.Parse(result);
result = wxjb["media_id"].ToString();
}
else
{
Common.LogManager.WriteLog("二维码日志", result + ",没有查询到openid用户的GID,错误:" + Openid);
}
}
}
catch (Exception ex)
{
Common.LogManager.WriteLog("二维码异常", result + ",错误:" + ex);
}
return(result);
}