public FilesStorage(string name, string path, string ext, double iExpires)
{
if (path[path.Length-1]=='/')
{
path.Substring(0, path.Length - 1);//去除最后的/
}
path = System.Web.HttpContext.Current.Server.MapPath(path);
fileName = path = "/" + name + ext;
FileInfo f;
bool exists = false;
bool timeout = true;
if (File.Exists(fileName))
{
exists = true;
f = new FileInfo(fileName);
if (f.LastWriteTime>DateTime.Now)
{
timeout = false;
}
}
else
{
f = null;
}
if (exists && timeout) //如果过期并存在
{
try
{
f.Delete();
}
catch
{
}
}
if (File.Exists(fileName))
{
store.Timeout = DateTime.Now.AddSeconds(iExpires);//更新时间
String Data = Xml.Encode(store);
using (FileStream fs = new FileStream(fileName, FileMode.Create))
{
using (StreamWriter sw = new StreamWriter(fs))
{
sw.WriteLine(Data);
}
}
f = new FileInfo(fileName);
}
f.LastWriteTime = DateTime.Now.AddSeconds(iExpires);//设置新的过期时间
String AllData = "";
using (StreamReader sr = new StreamReader(fileName))
{
AllData = sr.ReadToEnd();
}
try
{
store = Xml.Decode(AllData, store.GetType()) as FileStore;
}
catch
{
store = new FileStore();
}
}