/// <summary>
/// 微信API调用参数初始化
/// </summary>
public void WeixinApiInit()
{
string jstoken = GetTokenUtils.GetJsApiTicket();
ViewBag.appId = ConstantParam.AppId;
int timestamp = TickenUtils.ConvertDateTimeInt(DateTime.Now);
ViewBag.timestamp = timestamp;
string nonceStr = TickenUtils.createNonceStr();
ViewBag.nonceStr = nonceStr;
string url = PropertyUtils.GetConfigParamValue("HostUrl") + Request.RawUrl;
// 这里参数的顺序要按照 key 值 ASCII 码升序排序
string rawstring = "jsapi_ticket=" + jstoken + "&noncestr=" + nonceStr + "×tamp=" + timestamp + "&url=" + url;
ViewBag.signature = TickenUtils.SHA1_Hash(rawstring);
}
/// <summary>
/// 下载保存多媒体文件,返回多媒体保存路径
/// </summary>
/// <param name="dirPath">下载文件保存目录</param>
/// <param name="MEDIA_ID">多媒体文件服务器标识</param>
/// <returns>下载的文件路径，用;分割</returns>
public string GetMultimedia(string dirPath, string MEDIA_ID)
{
//目录创建
string dir = Server.MapPath(dirPath);
if (!Directory.Exists(dir))
{
Directory.CreateDirectory(dir);
}
string ACCESS_TOKEN = GetTokenUtils.GetToken();
string file = string.Empty;
string[] MEDIA_IDs = MEDIA_ID.Split(',');
for (int i = 0; i < MEDIA_IDs.Length; i++)
{
string content = string.Empty;
string strpath = string.Empty;
string savepath = string.Empty;
string stUrl = "http://file.api.weixin.qq.com/cgi-bin/media/get?access_token=" + ACCESS_TOKEN + "&media_id=" + MEDIA_IDs[i];
WebClient mywebclient = new WebClient();
string imgFileName = DateTime.Now.ToString("yyyyMMddHHmmssfff") + (new Random()).Next().ToString().Substring(0, 4) + ".jpg";
savepath = Path.Combine(dir, imgFileName);
try
{
mywebclient.DownloadFile(stUrl, savepath);
file += dirPath + imgFileName + ";";
}
catch (Exception ex)
{
PubFunction.ErrorLogPrint("服务器下载图片发生异常:", ex.ToString());
}
}
file = file.Substring(0, file.Length - 1);
return(file);
}