public class FileHelper
{
public static string MapPath(string path)
{
try
{
string rootdir = Directory.GetCurrentDirectory();
//DirectoryInfo Dir = Directory.GetParent(rootdir);
//string root = Dir.Parent.Parent.Parent.FullName;
return rootdir + path;
}
catch (Exception ex)
{
RedisHelper.StringSet("error", ex.Message);
return path;
}
}
#region 获取文件到集合中
/// <summary>
/// 读取指定位置文件列表到集合中
/// </summary>
/// <param name="path">指定路径</param>
/// <returns></returns>
public static DataTable GetFileTable(string path)
{
DataTable dt = new DataTable();
dt.Columns.Add("name", typeof(string));
dt.Columns.Add("ext", typeof(string));
dt.Columns.Add("size", typeof(long));
dt.Columns.Add("time", typeof(DateTime));
if (Directory.Exists(path))
{
DirectoryInfo dirinfo = new DirectoryInfo(path);
FileInfo fi;
DirectoryInfo dir;
string FileName, FileExt;
long FileSize = 0;
DateTime FileModify;
try
{
foreach (FileSystemInfo fsi in dirinfo.GetFileSystemInfos())
{
FileName = string.Empty;
FileExt = string.Empty;
if (fsi is FileInfo)
{
fi = (FileInfo)fsi;
//获取文件名称
FileName = fi.Name;
//获取文件扩展名
FileExt = fi.Extension;
//获取文件大小
FileSize = fi.Length;
//获取文件最后修改时间
FileModify = fi.LastWriteTime;
}
else
{
dir = (DirectoryInfo)fsi;
//获取目录名
FileName = dir.Name;
//获取目录最后修改时间
FileModify = dir.LastWriteTime;
//设置目录文件为文件夹
FileExt = "文件夹";
}
DataRow dr = dt.NewRow();
dr["name"] = FileName;
dr["ext"] = FileExt;
dr["size"] = FileSize;
dr["time"] = FileModify;
dt.Rows.Add(dr);
}
}
catch
{
throw;
}
}
return dt;
}
#endregion
#region 检测指定路径是否存在
/// <summary>
/// 检测指定路径是否存在
/// </summary>
/// <param name="path">目录的绝对路径</param>
public static bool IsExistDirectory(string path)
{
return Directory.Exists(path);
}
#endregion
#region 检测指定文件是否存在,如果存在则返回true
/// <summary>
/// 检测指定文件是否存在,如果存在则返回true
/// </summary>
/// <param name="filePath">文件的绝对路径</param>
public static bool IsExistFile(string filePath)
{
return File.Exists(filePath);
}
#endregion
#region 创建文件夹
/// <summary>
/// 创建文件夹
/// </summary>
/// <param name="folderPath">文件夹的绝对路径</param>
public static void CreateFolder(string folderPath)
{
if (!IsExistDirectory(folderPath))
{
Directory.CreateDirectory(folderPath);
}
}
#endregion
#region 判断上传文件后缀名
/// <summary>
/// 判断上传文件后缀名
/// </summary>
/// <param name="strExtension">后缀名</param>
public static bool IsCanEdit(string strExtension)
{
strExtension = strExtension.ToLower();
if (strExtension.LastIndexOf(".", StringComparison.Ordinal) >= 0)
{
strExtension = strExtension.Substring(strExtension.LastIndexOf(".", StringComparison.Ordinal));
}
else
{
strExtension = ".txt";
}
string[] strArray = new string[] { ".htm", ".html", ".txt", ".js", ".css", ".xml", ".sitemap" };
for (int i = 0; i < strArray.Length; i++)
{
if (strExtension.Equals(strArray[i]))
{
return true;
}
}
return false;
}
public static bool IsSafeName(string strExtension)
{
strExtension = strExtension.ToLower();
if (strExtension.LastIndexOf(".") >= 0)
{
strExtension = strExtension.Substring(strExtension.LastIndexOf("."));
}
else
{
strExtension = ".txt";
}
string[] strArray = new string[] { ".jpg", ".gif", ".png" };
for (int i = 0; i < strArray.Length; i++)
{
if (strExtension.Equals(strArray[i]))
{
return true;
}
}
return false;
}
public static bool IsZipName(string strExtension)
{
strExtension = strExtension.ToLower();
if (strExtension.LastIndexOf(".") >= 0)
{
strExtension = strExtension.Substring(strExtension.LastIndexOf("."));
}
else
{
strExtension = ".txt";
}
string[] strArray = new string[] { ".zip", ".rar" };
for (int i = 0; i < strArray.Length; i++)
{
if (strExtension.Equals(strArray[i]))
{
return true;
}
}
return false;
}
#endregion
#region 创建文件夹
/// <summary>
/// 创建文件夹
/// </summary>
/// <param name="fileName">文件的绝对路径</param>
public static void CreateSuffic(string fileName)
{
try
{
if (!Directory.Exists(fileName))
{
Directory.CreateDirectory(fileName);
}
}
catch (Exception ex)
{
throw;
}
}
/// <summary>
/// 创建文件夹
/// </summary>
/// <param name="fileName">文件的绝对路径</param>
public static void CreateFiles(string fileName)
{
try
{
//判断文件是否存在，不存在创建该文件
if (!IsExistFile(fileName))
{
FileInfo file = new FileInfo(fileName);
FileStream fs = file.Create();
fs.Close();
}
}
catch (Exception ex)
{
throw ex;
}
}
/// <summary>
/// 创建一个文件,并将字节流写入文件。
/// </summary>
/// <param name="filePath">文件的绝对路径</param>
/// <param name="buffer">二进制流数据</param>
public static void CreateFile(string filePath, byte[] buffer)
{
try
{
//判断文件是否存在，不存在创建该文件
if (!IsExistFile(filePath))
{
FileInfo file = new FileInfo(filePath);
FileStream fs = file.Create();
fs.Write(buffer, 0, buffer.Length);
fs.Close();
}
else
{
File.WriteAllBytes(filePath, buffer);
}
}
catch (Exception ex)
{
throw ex;
}
}
#endregion
#region 将文件移动到指定目录
/// <summary>
/// 将文件移动到指定目录
/// </summary>
/// <param name="sourceFilePath">需要移动的源文件的绝对路径</param>
/// <param name="descDirectoryPath">移动到的目录的绝对路径</param>
public static void Move(string sourceFilePath, string descDirectoryPath)
{
string sourceName = GetFileName(sourceFilePath);
if (IsExistDirectory(descDirectoryPath))
{
//如果目标中存在同名文件,则删除
if (IsExistFile(descDirectoryPath + "\\" + sourceFilePath))
{
DeleteFile(descDirectoryPath + "\\" + sourceFilePath);
}
else
{
//将文件移动到指定目录
File.Move(sourceFilePath, descDirectoryPath + "\\" + sourceFilePath);
}
}
}
#endregion
# region 将源文件的内容复制到目标文件中
/// <summary>
/// 将源文件的内容复制到目标文件中
/// </summary>
/// <param name="sourceFilePath">源文件的绝对路径</param>
/// <param name="descDirectoryPath">目标文件的绝对路径</param>
public static void Copy(string sourceFilePath, string descDirectoryPath)
{
File.Copy(sourceFilePath, descDirectoryPath, true);
}
#endregion
#region 从文件的绝对路径中获取文件名( 不包含扩展名 )
/// <summary>
/// 从文件的绝对路径中获取文件名( 不包含扩展名 )
/// </summary>
/// <param name="filePath">文件的绝对路径</param>
public static string GetFileName(string filePath)
{
FileInfo file = new FileInfo(filePath);
return file.Name;
}
#endregion
#region 获取文件的后缀名
/// <summary>
/// 获取文件的后缀名
/// </summary>
/// <param name="filePath">文件的绝对路径</param>
public static string GetExtension(string filePath)
{
FileInfo file = new FileInfo(filePath);
return file.Extension;
}
/// <summary>
/// 返回文件扩展名，不含“.”
/// </summary>
/// <param name="filepath">文件全名称</param>
/// <returns>string</returns>
public static string GetFileExt(string filepath)
{
if (string.IsNullOrEmpty(filepath))
{
return "";
}
if (filepath.LastIndexOf(".", StringComparison.Ordinal) > 0)
{
return filepath.Substring(filepath.LastIndexOf(".", StringComparison.Ordinal) + 1); //文件扩展名，不含“.”
}
return "";
}
#endregion
#region 删除指定文件
/// <summary>
/// 删除指定文件
/// </summary>
/// <param name="filePath">文件的绝对路径</param>
public static void DeleteFile(string filePath)
{
if (IsExistFile(filePath))
{
File.Delete(filePath);
}
}
#endregion
#region 删除指定目录及其所有子目录
/// <summary>
/// 删除指定目录及其所有子目录
/// </summary>
/// <param name="directoryPath">文件的绝对路径</param>
public static void DeleteDirectory(string directoryPath)
{
if (IsExistDirectory(directoryPath))
{
Directory.Delete(directoryPath);
}
}
#endregion
#region 清空指定目录下所有文件及子目录,但该目录依然保存.
/// <summary>
/// 清空指定目录下所有文件及子目录,但该目录依然保存.
/// </summary>
/// <param name="directoryPath">指定目录的绝对路径</param>
public static void ClearDirectory(string directoryPath)
{
if (!IsExistDirectory(directoryPath)) return;
//删除目录中所有的文件
string[] fileNames = GetFileNames(directoryPath);
for (int i = 0; i < fileNames.Length; i++)
{
DeleteFile(fileNames[i]);
}
//删除目录中所有的子目录
string[] directoryNames = GetDirectories(directoryPath);
for (int i = 0; i < directoryNames.Length; i++)
{
DeleteDirectory(directoryNames[i]);
}
}
#endregion
#region 剪切 粘贴
/// <summary>
/// 剪切文件
/// </summary>
/// <param name="source">原路径</param>
/// <param name="destination">新路径</param>
public bool FileMove(string source, string destination)
{
bool ret = false;
FileInfo file_s = new FileInfo(source);
FileInfo file_d = new FileInfo(destination);
if (file_s.Exists)
{
if (!file_d.Exists)
{
file_s.MoveTo(destination);
ret = true;
}
}
if (ret == true)
{
//Response.Write("<script>alert('剪切文件成功！');</script>");
}
else
{
//Response.Write("<script>alert('剪切文件失败！');</script>");
}
return ret;
}
#endregion
#region 检测指定目录是否为空
/// <summary>
/// 检测指定目录是否为空
/// </summary>
/// <param name="directoryPath">指定目录的绝对路径</param>
public static bool IsEmptyDirectory(string directoryPath)
{
try
{
//判断文件是否存在
string[] fileNames = GetFileNames(directoryPath);
if (fileNames.Length > 0)
{
return false;
}
//判断是否存在文件夹
string[] directoryNames = GetDirectories(directoryPath);
if (directoryNames.Length > 0)
{
return false;
}
return true;
}
catch (Exception ex)
{
return true;
}
}
#endregion
#region 获取指定目录中所有文件列表
/// <summary>
/// 获取指定目录中所有文件列表
/// </summary>
/// <param name="directoryPath">指定目录的绝对路径</param>
public static string[] GetFileNames(string directoryPath)
{
if (!IsExistDirectory(directoryPath))
{
throw new FileNotFoundException();
}
return Directory.GetFiles(directoryPath);
}
#endregion
#region 获取指定目录中的子目录列表
/// <summary>
/// 获取指定目录中所有子目录列表,若要搜索嵌套的子目录列表,请使用重载方法
/// </summary>
/// <param name="directoryPath">指定目录的绝对路径</param>
public static string[] GetDirectories(string directoryPath)
{
try
{
return Directory.GetDirectories(directoryPath);
}
catch (Exception ex)
{
throw ex;
}
}
/// <summary>
/// 获取指定目录及子目录中所有子目录列表
/// </summary>
/// <param name="directoryPath">指定目录的绝对路径</param>
/// <param name="searchPattern">模式字符串，"*"代表0或N个字符，"?"代表1个字符。
/// 范例："Log*.xml"表示搜索所有以Log开头的Xml文件。</param>
/// <param name="isSearchChild">是否搜索子目录</param>
public static string[] GetDirectories(string directoryPath, string searchPattern, bool isSearchChild)
{
try
{
if (isSearchChild)
{
return Directory.GetDirectories(directoryPath, searchPattern, SearchOption.AllDirectories);
}
else
{
return Directory.GetDirectories(directoryPath, searchPattern, SearchOption.TopDirectoryOnly);
}
}
catch (Exception ex)
{
throw ex;
}
}
#endregion
#region 获取一个文件的长度
/// <summary>
/// 获取一个文件的长度,单位为Byte
/// </summary>
/// <param name="filePath">文件的绝对路径</param>
public static int GetFileSize(string filePath)
{
//创建一个文件对象
FileInfo fi = new FileInfo(filePath);
//获取文件的大小
return (int)fi.Length;
}
/// <summary>
/// 获取一个文件的长度,单位为KB
/// </summary>
/// <param name="filePath">文件的路径</param>
public static double GetFileSizeByKb(string filePath)
{
//创建一个文件对象
FileInfo fi = new FileInfo(filePath);
//获取文件的大小
return Math.Round(Convert.ToDouble(filePath.Length) / 1024, 2);// ConvertHelper.ToDouble(ConvertHelper.ToDouble(fi.Length) / 1024, 1);
}
/// <summary>
/// 获取一个文件的长度,单位为MB
/// </summary>
/// <param name="filePath">文件的路径</param>
public static double GetFileSizeByMb(string filePath)
{
//创建一个文件对象
FileInfo fi = new FileInfo(filePath);
//获取文件的大小
return Math.Round(Convert.ToDouble(Convert.ToDouble(fi.Length) / 1024 / 1024), 2);
}
#endregion
#region 将文件读取到字符串中
/// <summary>
/// 将文件读取到字符串中
/// </summary>
/// <param name="filePath">文件的绝对路径</param>
public static string FileToString(string filePath)
{
return FileToString(filePath, Encoding.UTF8);
}
/// <summary>
/// 将文件读取到字符串中
/// </summary>
/// <param name="filePath">文件的绝对路径</param>
/// <param name="encoding">字符编码</param>
public static string FileToString(string filePath, Encoding encoding)
{
//创建流读取器
StreamReader reader = new StreamReader(filePath, encoding);
try
{
//读取流
return reader.ReadToEnd();
}
catch (Exception ex)
{
throw ex;
}
finally
{
//关闭流读取器
reader.Close();
}
}
#endregion
}
