594 lines
18 KiB
C#
594 lines
18 KiB
C#
using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Reflection;
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using System.Security.Cryptography;
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using System.Text;
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using System.Threading.Tasks;
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using System.Xml;
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namespace WinformGeneralDeveloperFrame.Commons
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{
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/// <summary>
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/// 常用的文件操作辅助类FileUtil
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/// </summary>
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public class FileUtil
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{
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#region Stream、byte[] 和 文件之间的转换
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/// <summary>
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/// 将流读取到缓冲区中
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/// </summary>
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/// <param name="stream">原始流</param>
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public static byte[] StreamToBytes(Stream stream)
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{
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try
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{
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//创建缓冲区
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byte[] buffer = new byte[stream.Length];
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//读取流
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stream.Read(buffer, 0, Convert.ToInt32(stream.Length));
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//返回流
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return buffer;
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}
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catch (IOException ex)
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{
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throw ex;
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}
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finally
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{
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//关闭流
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stream.Close();
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}
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}
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/// <summary>
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/// 将 byte[] 转成 Stream
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/// </summary>
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public static Stream BytesToStream(byte[] bytes)
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{
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Stream stream = new MemoryStream(bytes);
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return stream;
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}
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/// <summary>
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/// 将 Stream 写入文件
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/// </summary>
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public static void StreamToFile(Stream stream, string fileName)
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{
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// 把 Stream 转换成 byte[]
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byte[] bytes = new byte[stream.Length];
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stream.Read(bytes, 0, bytes.Length);
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// 设置当前流的位置为流的开始
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stream.Seek(0, SeekOrigin.Begin);
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// 把 byte[] 写入文件
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FileStream fs = new FileStream(fileName, FileMode.Create);
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BinaryWriter bw = new BinaryWriter(fs);
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bw.Write(bytes);
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bw.Close();
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fs.Close();
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}
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/// <summary>
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/// 从文件读取 Stream
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/// </summary>
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public static Stream FileToStream(string fileName)
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{
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// 打开文件
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FileStream fileStream = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.Read);
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// 读取文件的 byte[]
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byte[] bytes = new byte[fileStream.Length];
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fileStream.Read(bytes, 0, bytes.Length);
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fileStream.Close();
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// 把 byte[] 转换成 Stream
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Stream stream = new MemoryStream(bytes);
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return stream;
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}
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/// <summary>
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/// 将文件读取到缓冲区中
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/// </summary>
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/// <param name="filePath">文件的绝对路径</param>
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public static byte[] FileToBytes(string filePath)
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{
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//获取文件的大小
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int fileSize = GetFileSize(filePath);
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//创建一个临时缓冲区
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byte[] buffer = new byte[fileSize];
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//创建一个文件流
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FileInfo fi = new FileInfo(filePath);
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FileStream fs = fi.Open(FileMode.Open);
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try
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{
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//将文件流读入缓冲区
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fs.Read(buffer, 0, fileSize);
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return buffer;
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}
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catch (IOException ex)
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{
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throw ex;
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}
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finally
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{
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//关闭文件流
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fs.Close();
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}
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}
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/// <summary>
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/// 将文件读取到字符串中
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/// </summary>
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/// <param name="filePath">文件的绝对路径</param>
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public static string FileToString(string filePath)
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{
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return FileToString(filePath, Encoding.Default);
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}
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/// <summary>
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/// 将文件读取到字符串中
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/// </summary>
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/// <param name="filePath">文件的绝对路径</param>
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/// <param name="encoding">字符编码</param>
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public static string FileToString(string filePath, Encoding encoding)
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{
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try
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{
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//创建流读取器
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using (StreamReader reader = new StreamReader(filePath, encoding))
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{
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//读取流
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return reader.ReadToEnd();
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}
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}
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catch (IOException ex)
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{
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throw ex;
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}
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}
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/// <summary>
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/// 从嵌入资源中读取文件内容(e.g: xml).
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/// </summary>
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/// <param name="fileWholeName">嵌入资源文件名，包括项目的命名空间.</param>
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/// <returns>资源中的文件内容.</returns>
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public static string ReadFileFromEmbedded(string fileWholeName)
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{
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string result = string.Empty;
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using (TextReader reader = new StreamReader(
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Assembly.GetExecutingAssembly().GetManifestResourceStream(fileWholeName)))
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{
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result = reader.ReadToEnd();
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}
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return result;
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}
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#endregion
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#region 获取文件的编码类型
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/// <summary>
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/// 获取文件编码
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/// </summary>
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/// <param name="filePath">文件绝对路径</param>
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/// <returns></returns>
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public static Encoding GetEncoding(string filePath)
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{
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return GetEncoding(filePath, Encoding.Default);
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}
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/// <summary>
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/// 获取文件编码
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/// </summary>
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/// <param name="filePath">文件绝对路径</param>
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/// <param name="defaultEncoding">找不到则返回这个默认编码</param>
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/// <returns></returns>
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public static Encoding GetEncoding(string filePath, Encoding defaultEncoding)
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{
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Encoding targetEncoding = defaultEncoding;
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using (FileStream fs = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read, 4))
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{
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if (fs != null && fs.Length >= 2)
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{
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long pos = fs.Position;
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fs.Position = 0;
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int[] buffer = new int[4];
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//long x = fs.Seek(0, SeekOrigin.Begin);
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//fs.Read(buffer,0,4);
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buffer[0] = fs.ReadByte();
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buffer[1] = fs.ReadByte();
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buffer[2] = fs.ReadByte();
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buffer[3] = fs.ReadByte();
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fs.Position = pos;
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if (buffer[0] == 0xFE && buffer[1] == 0xFF) //UnicodeBe
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{
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targetEncoding = Encoding.BigEndianUnicode;
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}
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if (buffer[0] == 0xFF && buffer[1] == 0xFE) //Unicode
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{
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targetEncoding = Encoding.Unicode;
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}
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if (buffer[0] == 0xEF && buffer[1] == 0xBB && buffer[2] == 0xBF) //UTF8
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{
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targetEncoding = Encoding.UTF8;
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}
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}
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}
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return targetEncoding;
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}
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#endregion
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#region 文件操作
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#region 获取一个文件的长度
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/// <summary>
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/// 获取一个文件的长度,单位为Byte
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/// </summary>
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/// <param name="filePath">文件的绝对路径</param>
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public static int GetFileSize(string filePath)
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{
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//创建一个文件对象
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FileInfo fi = new FileInfo(filePath);
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//获取文件的大小
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return (int) fi.Length;
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}
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/// <summary>
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/// 获取一个文件的长度,单位为KB
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/// </summary>
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/// <param name="filePath">文件的路径</param>
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public static double GetFileSizeKB(string filePath)
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{
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//创建一个文件对象
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FileInfo fi = new FileInfo(filePath);
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//获取文件的大小
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return ConvertHelper.ToDouble(Convert.ToDouble(fi.Length) / 1024, 1);
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}
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/// <summary>
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/// 获取一个文件的长度,单位为MB
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/// </summary>
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/// <param name="filePath">文件的路径</param>
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public static double GetFileSizeMB(string filePath)
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{
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//创建一个文件对象
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FileInfo fi = new FileInfo(filePath);
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//获取文件的大小
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return ConvertHelper.ToDouble(Convert.ToDouble(fi.Length) / 1024 / 1024, 1);
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}
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#endregion
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/// <summary>
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/// 向文本文件中写入内容
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/// </summary>
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/// <param name="filePath">文件的绝对路径</param>
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/// <param name="content">写入的内容</param>
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public static void WriteText(string filePath, string content)
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{
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//向文件写入内容
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File.WriteAllText(filePath, content, Encoding.Default);
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}
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/// <summary>
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/// 向文本文件的尾部追加内容
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/// </summary>
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/// <param name="filePath">文件的绝对路径</param>
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/// <param name="content">写入的内容</param>
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public static void AppendText(string filePath, string content)
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{
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File.AppendAllText(filePath, content, Encoding.Default);
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}
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/// <summary>
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/// 将源文件的内容复制到目标文件中
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/// </summary>
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/// <param name="sourceFilePath">源文件的绝对路径</param>
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/// <param name="destFilePath">目标文件的绝对路径</param>
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public static void Copy(string sourceFilePath, string destFilePath)
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{
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File.Copy(sourceFilePath, destFilePath, true);
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}
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/// <summary>
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/// 将文件移动到指定目录
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/// </summary>
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/// <param name="sourceFilePath">需要移动的源文件的绝对路径</param>
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/// <param name="descDirectoryPath">移动到的目录的绝对路径</param>
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public static void Move(string sourceFilePath, string descDirectoryPath)
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{
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//获取源文件的名称
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string sourceFileName = GetFileName(sourceFilePath);
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if (Directory.Exists(descDirectoryPath))
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{
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//如果目标中存在同名文件,则删除
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if (IsExistFile(descDirectoryPath + "\\" + sourceFileName))
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{
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DeleteFile(descDirectoryPath + "\\" + sourceFileName);
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}
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//将文件移动到指定目录
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File.Move(sourceFilePath, descDirectoryPath + "\\" + sourceFileName);
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}
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}
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/// <summary>
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/// 检测指定文件是否存在,如果存在则返回true。
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/// </summary>
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/// <param name="filePath">文件的绝对路径</param>
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public static bool IsExistFile(string filePath)
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{
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return File.Exists(filePath);
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}
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/// <summary>
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/// 创建一个文件。
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/// </summary>
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/// <param name="filePath">文件的绝对路径</param>
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public static void CreateFile(string filePath)
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{
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try
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{
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//如果文件不存在则创建该文件
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if (!IsExistFile(filePath))
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{
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File.Create(filePath);
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}
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}
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catch (IOException ex)
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{
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throw ex;
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}
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}
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/// <summary>
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/// 创建一个文件,并将字节流写入文件。
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/// </summary>
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/// <param name="filePath">文件的绝对路径</param>
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/// <param name="buffer">二进制流数据</param>
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public static void CreateFile(string filePath, byte[] buffer)
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{
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try
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{
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//如果文件不存在则创建该文件
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if (!IsExistFile(filePath))
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{
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//创建文件
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using (FileStream fs = File.Create(filePath))
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{
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//写入二进制流
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fs.Write(buffer, 0, buffer.Length);
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}
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}
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}
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catch (IOException ex)
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{
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throw ex;
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}
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}
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/// <summary>
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/// 获取文本文件的行数
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/// </summary>
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/// <param name="filePath">文件的绝对路径</param>
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public static int GetLineCount(string filePath)
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{
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//将文本文件的各行读到一个字符串数组中
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string[] rows = File.ReadAllLines(filePath);
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//返回行数
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return rows.Length;
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}
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/// <summary>
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/// 从文件的绝对路径中获取文件名( 包含扩展名 )
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/// </summary>
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/// <param name="filePath">文件的绝对路径</param>
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public static string GetFileName(string filePath)
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{
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//获取文件的名称
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FileInfo fi = new FileInfo(filePath);
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return fi.Name;
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}
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/// <summary>
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/// 从文件的绝对路径中获取文件名( 不包含扩展名 )
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/// </summary>
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/// <param name="filePath">文件的绝对路径</param>
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public static string GetFileNameNoExtension(string filePath)
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{
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//获取文件的名称
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FileInfo fi = new FileInfo(filePath);
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return fi.Name.Substring(0, fi.Name.LastIndexOf('.'));
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}
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/// <summary>
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/// 从文件的绝对路径中获取扩展名
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/// </summary>
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/// <param name="filePath">文件的绝对路径</param>
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public static string GetExtension(string filePath)
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{
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//获取文件的名称
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FileInfo fi = new FileInfo(filePath);
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return fi.Extension;
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}
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/// <summary>
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/// 清空文件内容
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/// </summary>
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/// <param name="filePath">文件的绝对路径</param>
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public static void ClearFile(string filePath)
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{
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//删除文件
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File.Delete(filePath);
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//重新创建该文件
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CreateFile(filePath);
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}
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/// <summary>
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/// 删除指定文件
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/// </summary>
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/// <param name="filePath">文件的绝对路径</param>
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public static void DeleteFile(string filePath)
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{
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if (IsExistFile(filePath))
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{
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File.Delete(filePath);
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}
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}
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/// <summary>
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/// 文件是否存在或无权访问
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/// </summary>
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/// <param name="path">相对路径或绝对路径</param>
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/// <returns>如果是目录也返回false</returns>
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public static bool FileIsExist(string path)
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{
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return File.Exists(path);
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}
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/// <summary>
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/// 文件是否只读
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/// </summary>
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/// <param name="fullpath"></param>
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/// <returns></returns>
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public static bool FileIsReadOnly(string fullpath)
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{
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FileInfo file = new FileInfo(fullpath);
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if ((file.Attributes & FileAttributes.ReadOnly) == FileAttributes.ReadOnly)
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{
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return true;
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}
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else
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{
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return false;
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}
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}
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/// <summary>
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/// 设置文件是否只读
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/// </summary>
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/// <param name="fullpath"></param>
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/// <param name="flag">true表示只读，反之</param>
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public static void SetFileReadonly(string fullpath, bool flag)
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{
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FileInfo file = new FileInfo(fullpath);
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if (flag)
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{
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// 添加只读属性
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file.Attributes |= FileAttributes.ReadOnly;
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}
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else
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{
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// 移除只读属性
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file.Attributes &= ~FileAttributes.ReadOnly;
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}
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}
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/// <summary>
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/// 取文件名
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/// </summary>
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/// <param name="fullpath">文件路径</param>
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/// <param name="removeExt">是否移除后缀名</param>
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/// <returns></returns>
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public static string GetFileName(string fullpath, bool removeExt)
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{
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FileInfo fi = new FileInfo(fullpath);
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string name = fi.Name;
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if (removeExt)
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{
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name = name.Remove(name.IndexOf('.'));
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}
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return name;
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}
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/// <summary>
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/// 取文件创建时间
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/// </summary>
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/// <param name="fullpath"></param>
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/// <returns></returns>
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public static DateTime GetFileCreateTime(string fullpath)
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{
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FileInfo fi = new FileInfo(fullpath);
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return fi.CreationTime;
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}
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/// <summary>
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/// 取文件最后存储时间
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/// </summary>
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/// <param name="fullpath"></param>
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/// <returns></returns>
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public static DateTime GetLastWriteTime(string fullpath)
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{
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FileInfo fi = new FileInfo(fullpath);
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return fi.LastWriteTime;
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}
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/// <summary>
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/// 创建一个零字节临时文件
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/// </summary>
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/// <returns></returns>
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public static string CreateTempZeroByteFile()
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{
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return Path.GetTempFileName();
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}
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/// <summary>
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/// 创建一个随机文件名，不创建文件本身
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/// </summary>
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/// <returns></returns>
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public static string GetRandomFileName()
|
||
{
|
||
return Path.GetRandomFileName();
|
||
}
|
||
|
||
/// <summary>
|
||
/// 判断两个文件的哈希值是否一致
|
||
/// </summary>
|
||
/// <param name="fileName1"></param>
|
||
/// <param name="fileName2"></param>
|
||
/// <returns></returns>
|
||
public static bool CompareFilesHash(string fileName1, string fileName2)
|
||
{
|
||
using (HashAlgorithm hashAlg = HashAlgorithm.Create())
|
||
{
|
||
using (FileStream fs1 = new FileStream(fileName1, FileMode.Open),
|
||
fs2 = new FileStream(fileName2, FileMode.Open))
|
||
{
|
||
byte[] hashBytes1 = hashAlg.ComputeHash(fs1);
|
||
byte[] hashBytes2 = hashAlg.ComputeHash(fs2);
|
||
|
||
// 比较哈希码
|
||
return (BitConverter.ToString(hashBytes1) == BitConverter.ToString(hashBytes2));
|
||
}
|
||
}
|
||
}
|
||
|
||
#endregion
|
||
}
|
||
}
|