private static string CreatFileUrlMd5(string fileName)
{
if (null == CurVersionFileUrlMd5)
{
CurVersionFileUrlMd5 = new Dictionary <string, string>();
}
string fileUrl = ABHelper.BuildMD5ByString(fileName);
if (!CurVersionFileUrlMd5.ContainsKey(fileUrl))
{
CurVersionFileUrlMd5.Add(fileUrl, fileName);
}
return(fileUrl);
}