/// <summary>
/// 获取文件的只读流
/// </summary>
public static Stream GetFileStream(string filePathOrUrl)
{
Stream retVal = null;
try
{
if (!string.IsNullOrEmpty(filePathOrUrl))
{
PathType pathType = 0;
var targetPath = filePathOrUrl;
if (RegExpHelper.IsUrl(filePathOrUrl))
{
pathType = PathType.WebUrl;
targetPath = filePathOrUrl;
}
else if (RegExpHelper.IsRelativePath(filePathOrUrl))
{
pathType = PathType.WindowPath;
targetPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, filePathOrUrl.Replace("/", @"\").TrimStart('/').TrimStart('\\'));
}
else if (RegExpHelper.IsPhysicalPath(filePathOrUrl))
{
pathType = PathType.WindowPath;
targetPath = filePathOrUrl;
}
if (Enum.IsDefined(typeof(PathType), pathType))
{
switch (pathType)
{
case PathType.WindowPath:
retVal = new FileStream(targetPath, FileMode.Open, FileAccess.Read);
break;
case PathType.WebUrl:
retVal = NetHelper.HttpGetStream(targetPath);
break;
}
}
}
}
catch { }
return(retVal);
}
