/// <summary>
/// 一个网址连续抓取三次,如果三次都抓取超时或者失败,就不抓了
/// </summary>
/// <param name="webClient"></param>
/// <param name="url"></param>
/// <returns></returns>
private string GetHtmlString(MyWebClient webClient,string url)
{
string result = "";
try
{
result = Encoding.GetEncoding("utf-8").GetString(webClient.DownloadData(url));
}
catch (Exception er)
{
ExecuteNum++;
if (ExecuteNum > 3) return "";
GetHtmlString(webClient, url);
}
return result;
}
