所谓“网络硬盘”,即将服务器的磁盘空间提供给用户使用,用户可以通过这种方式在互联网上实现文件的转移和备份。通过网络硬盘,不仅可以备份电脑系统文件,且可以轻松实现移动化办公,你可以随时随地进行个人文件的上传、下载、删除及文件目录的创建、删除等操作,还可以实现文件网络共享、网络文件快递、快速下载通道等。
选择使用Ext能轻易实现各种JS,AJAX功能。Ext与服务器交互主要是通过url,JSON。程序关键的代码是文件操作部分。
界面类似于电脑里的资源管理器,左侧为文件夹管理,右侧为文件夹下文件管理,支持右键菜单,计算剩余空间功能。
程序运行截图:
获取文件夹下的文件
View Code
DirectoryInfo TheFolder = new DirectoryInfo(Path);
foreach (FileInfo NextFile in TheFolder.GetFiles())
{
}
foreach (DirectoryInfo NextFile in TheFolder.GetDirectories())
{
}
格式文件大小
View Code
public string formatBytes(long bytes)
{
if (bytes > 1073741824)
{
return String.Format("{0:f2}", ((double)bytes / 1073741824)) + " G";
}
if (bytes > 1048576)
{
return String.Format("{0:f2}", ((double)bytes / 1048576)) + " M";
}
if (bytes > 1024)
{
return String.Format("{0:f2}", ((double)bytes / 1024)) + " K";
}
return bytes.ToString() + " Bytes";
}
得到路径下文件的大小
View Code
public static long GetDirectoryLength(string dirPath)
{
//判断给定的路径是否存在,如果不存在则退出
if (!Directory.Exists(dirPath))
return 0;
long len = 0;
//定义一个DirectoryInfo对象
DirectoryInfo di = new DirectoryInfo(dirPath);
//通过GetFiles方法,获取di目录中的所有文件的大小
foreach (FileInfo fi in di.GetFiles())
{
len += fi.Length;
}
//获取di中所有的文件夹,并存到一个新的对象数组中,以进行递归
DirectoryInfo[] dis = di.GetDirectories();
if (dis.Length > 0)
{
for (int i = 0; i < dis.Length; i++)
{
len += GetDirectoryLength(dis[i].FullName);
}
}
return len;
}
删除文件夹
View Code
public void DeleteFolder(string dir)
{
if (Directory.Exists(dir)) //如果存在这个文件夹删除之
{
foreach (string d in Directory.GetFileSystemEntries(dir))
{
if (File.Exists(d))
File.Delete(d); //直接删除其中的文件
else
DeleteFolder(d); //递归删除子文件夹
}
Directory.Delete(dir, true); //删除已空文件夹
}
}
复制文件夹
View Code
private void CopyFiles(string varFromDirectory, string varToDirectory)
{
string DirectoryName = "";
DirectoryName = varToDirectory;
if (!Directory.Exists(varToDirectory))
Directory.CreateDirectory(varToDirectory);
if (!Directory.Exists(varFromDirectory))
return;
string[] directories = Directory.GetDirectories(varFromDirectory);
if (directories.Length > 0)
{
foreach (string d in directories)
{
CopyFiles(d, varToDirectory + d.Substring(d.LastIndexOf("\\")));
}
} //C#递归方法复制文件夹
string[] files = Directory.GetFiles(varFromDirectory); if (files.Length > 0)
{
foreach (string s in files)
{
File.Copy(s, varToDirectory + s.Substring(s.LastIndexOf("\\")), true);
}
}
}
得到新复制文件的名字
View Code
public string GetFileNewCopyName(string NewPath, string FileName)
{
if (File.Exists(NewPath + @"\" + FileName))
{
string CopyFileName = NewPath + @"\复制 " + FileName;
if (File.Exists(CopyFileName))
{
DirectoryInfo TheFolder = new DirectoryInfo(Path.GetDirectoryName(CopyFileName));
int i = 1;
foreach (FileInfo NextFile in TheFolder.GetFiles())
{
CopyFileName = NewPath + @"\复制 (" + i.ToString() + ") " + FileName;
if (File.Exists(CopyFileName))
i++;
else
break;
}
}
return CopyFileName;
}
return NewPath + @"\" + FileName;
}
压缩和解压缩类
View Code
public class ZipClass
{
public static bool Zip(String FileToZip, String ZipedFile, String Password)
{
if (Directory.Exists(FileToZip))
{
return ZipFileDictory(FileToZip, ZipedFile, Password);
}
else if (File.Exists(FileToZip))
{
return ZipFile(FileToZip, ZipedFile, Password);
}
else
{
return false;
}
}
/// <summary>
/// 递归压缩文件夹方法
/// </summary>
/// <param name="FolderToZip"></param>
/// <param name="s"></param>
/// <param name="ParentFolderName"></param>
private static bool ZipFileDictory(string FolderToZip, ZipOutputStream s, string ParentFolderName)
{
bool res = true;
string[] folders, filenames;
ZipEntry entry = null;
FileStream fs = null;
Crc32 crc = new Crc32();
try
{
//创建当前文件夹
entry = new ZipEntry(Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip) + "/")); //加上 “/” 才会当成是文件夹创建
s.PutNextEntry(entry);
s.Flush();
//先压缩文件,再递归压缩文件夹
filenames = Directory.GetFiles(FolderToZip);
foreach (string file in filenames)
{
//打开压缩文件
fs = File.OpenRead(file);
byte[] buffer = new byte[fs.Length];
fs.Read(buffer, 0, buffer.Length);
entry = new ZipEntry(Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip) + "/" + Path.GetFileName(file)));
entry.DateTime = DateTime.Now;
entry.Size = fs.Length;
fs.Close();
crc.Reset();
crc.Update(buffer);
entry.Crc = crc.Value;
s.PutNextEntry(entry);
s.Write(buffer, 0, buffer.Length);
}
}
catch
{
res = false;
}
finally
{
if (fs != null)
{
fs.Close();
fs = null;
}
if (entry != null)
{
entry = null;
}
GC.Collect();
GC.Collect(1);
}
folders = Directory.GetDirectories(FolderToZip);
foreach (string folder in folders)
{
if (!ZipFileDictory(folder, s, Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip))))
{
return false;
}
}
return res;
}
/**/
/// <summary>
/// 压缩目录
/// </summary>
/// <param name="FolderToZip">待压缩的文件夹,全路径格式</param>
/// <param name="ZipedFile">压缩后的文件名,全路径格式</param>
/// <returns></returns>
private static bool ZipFileDictory(string FolderToZip, string ZipedFile, String Password)
{
bool res;
if (!Directory.Exists(FolderToZip))
{
return false;
}
ZipOutputStream s = new ZipOutputStream(File.Create(ZipedFile));
s.SetLevel(6);
//s.Password = Password;
res = ZipFileDictory(FolderToZip, s, "");
s.Finish();
s.Close();
return res;
}
/**/
/// <summary>
/// 压缩文件
/// </summary>
/// <param name="FileToZip">要进行压缩的文件名</param>
/// <param name="ZipedFile">压缩后生成的压缩文件名</param>
/// <returns></returns>
private static bool ZipFile(string FileToZip, string ZipedFile, String Password)
{
//如果文件没有找到,则报错
if (!File.Exists(FileToZip))
{
throw new System.IO.FileNotFoundException("指定要压缩的文件: " + FileToZip + " 不存在!");
}
//FileStream fs = null;
FileStream ZipFile = null;
ZipOutputStream ZipStream = null;
ZipEntry ZipEntry = null;
bool res = true;
try
{
ZipFile = File.OpenRead(FileToZip);
byte[] buffer = new byte[ZipFile.Length];
ZipFile.Read(buffer, 0, buffer.Length);
ZipFile.Close();
ZipFile = File.Create(ZipedFile);
ZipStream = new ZipOutputStream(ZipFile);
//ZipStream.Password = Password;
ZipEntry = new ZipEntry(Path.GetFileName(FileToZip));
ZipStream.PutNextEntry(ZipEntry);
ZipStream.SetLevel(6);
ZipStream.Write(buffer, 0, buffer.Length);
}
catch
{
res = false;
}
finally
{
if (ZipEntry != null)
{
ZipEntry = null;
}
if (ZipStream != null)
{
ZipStream.Finish();
ZipStream.Close();
}
if (ZipFile != null)
{
ZipFile.Close();
ZipFile = null;
}
GC.Collect();
GC.Collect(1);
}
return res;
}
/**/
/// <summary>
/// 压缩文件 和 文件夹
/// </summary>
/// <param name="FileToZip">待压缩的文件或文件夹,全路径格式</param>
/// <param name="ZipedFile">压缩后生成的压缩文件名,全路径格式</param>
/// <returns></returns>
}
public class UnZipClass
{
/**/
/// <summary>
/// 解压功能(解压压缩文件到指定目录)
/// </summary>
/// <param name="FileToUpZip">待解压的文件</param>
/// <param name="ZipedFolder">指定解压目标目录</param>
public static void UnZip(string FileToUpZip, string ZipedFolder, string Password)
{
if (!File.Exists(FileToUpZip))
{
return;
}
if (!Directory.Exists(ZipedFolder))
{
Directory.CreateDirectory(ZipedFolder);
}
ZipInputStream s = null;
ZipEntry theEntry = null;
string fileName;
FileStream streamWriter = null;
try
{
s = new ZipInputStream(File.OpenRead(FileToUpZip));
//s.Password = Password;
while ((theEntry = s.GetNextEntry()) != null)
{
if (theEntry.Name != String.Empty)
{
fileName = Path.Combine(ZipedFolder, theEntry.Name);
/**/
///判断文件路径是否是文件夹
if (fileName.EndsWith("/") || fileName.EndsWith("\\"))
{
Directory.CreateDirectory(fileName);
continue;
}
streamWriter = File.Create(fileName);
int size = 2048;
byte[] data = new byte[2048];
while (true)
{
size = s.Read(data, 0, data.Length);
if (size > 0)
{
streamWriter.Write(data, 0, size);
}
else
{
break;
}
}
}
}
}
finally
{
if (streamWriter != null)
{
streamWriter.Close();
streamWriter = null;
}
if (theEntry != null)
{
theEntry = null;
}
if (s != null)
{
s.Close();
s = null;
}
GC.Collect();
GC.Collect(1);
}
}
}