获取临时素材

获取临时素材

获取临时图片，我们这里就不再进行json的序列化了，因为这个也不算是微信的技术范畴，我们就直接显示json文档出来就可以了

string url = string.Format("https://api.weixin.qq.com/cgi-bin/media/get?access_token={0}&media_id={1}", obj.access_token,this.TextBox1.Text);
this.labelRes.Text = Tool.HttpGetMeterial(url);Code language: JavaScript (javascript)

下面是封装用来去资料文件

public static string HttpGetMeterial(String Url)
{
    string sException = null;
    string sRslt = null;
    WebResponse oWebRps = null;
    WebRequest oWebRqst = WebRequest.Create(Url);
    oWebRqst.Timeout = 50000;
    try
    {
        oWebRps = oWebRqst.GetResponse();
    }
    catch (WebException e)
    {
        sException = e.Message.ToString();
    }
    catch (Exception e)
    {
        sException = e.ToString();
    }
    finally
    {
        if (oWebRps != null)
        {
            System.Drawing.Image downImage = System.Drawing.Image.FromStream(oWebRps.GetResponseStream());

            string dertory = string.Format(HttpContext.Current.Server.MapPath("~/")+@"{0}\", DateTime.Now.ToString("yyyy-MM-dd"));

            string fileName = oWebRps.Headers["Content-disposition"];
            fileName = fileName.Substring(fileName.IndexOf("\"")+1, fileName.LastIndexOf("\"")-fileName.IndexOf("\"")-1);

            if (!System.IO.Directory.Exists(dertory))
            {
                System.IO.Directory.CreateDirectory(dertory);
            }
            sRslt = dertory + fileName;
            downImage.Save(sRslt);
            downImage.Dispose();
            oWebRps.Close();
        }
    }
    return sRslt;
}Code language: PHP (php)