分卷压缩 C#代码实现
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Ionic.Zip;
using System.IO;
namespace IFCA.BL.CM
{
///
/// Zip压缩文件辅助类(封装Ionic.Zip)
///
public static class FileCompressZipHelper
{
///
/// 压缩指定文件或目录
///
/// 要进行压缩的文件或目录名称
///
public static string Compress(string fileOrDirectoryName)
{
string zipPath = _GetZipPath(fileOrDirectoryName);
Compress(fileOrDirectoryName, zipPath);
return zipPath;
}
///
/// 压缩指定文件或目录
///
/// 要进行压缩的文件或目录名称
/// 生成的压缩文件路径
public static void Compress(string fileOrDirectoryName, string zipPath)
{
using (ZipFile zip = new ZipFile(Encoding.GetEncoding("utf-8")))
{
zip.AddItem(fileOrDirectoryName, "");
zip.Save(zipPath);
}
}
///
/// 分卷压缩指定文件或目录
///
/// 要进行压缩的文件或目录名称
/// 分卷大小(MB)
public static void Compress(string fileOrDirectoryName, int segmentSize)
{
string zipPath = _GetZipPath(fileOrDirectoryName);
Compress(fileOrDirectoryName, zipPath, ZipDataUnit.MB, segmentSize);
}
///
/// 分卷压缩指定文件或目录
///
/// 要进行压缩的文件或目录名称
/// 生成的压缩文件路径
/// 分卷数据单位
/// 分卷大小
public static void Compress(string fileOrDirectoryName, string zipPath, ZipDataUnit dataUnit, int segmentSize)
{
using (ZipFile zip = new ZipFile(Encoding.GetEncoding("utf-8")))
{
zip.MaxOutputSegmentSize = (int)dataUnit * segmentSize;
zip.AddItem(fileOrDirectoryName, "");
zip.Save(zipPath);
}
}
///
/// 获取对应的文件
///
/// 路径
///
private static string _GetZipPath(string path)
{
string directory = Path.GetDirectoryName(path);
if (string.IsNullOrWhiteSpace(directory)) directory = Path.GetPathRoot(path);
string fileName = Path.GetFileName(path);
string zipFileName = null;
//文件路径
if (!string.IsNullOrWhiteSpace(fileName))
{
zipFileName = Path.ChangeExtension(fileName, ".zip");
}
else
{
zipFileName = directory.Split('\\').Last();
if (string.IsNullOrEmpty(zipFileName))
{
zipFileName = "未命名";
}
else
{
directory = directory.Replace(zipFileName, "");
}
zipFileName = ".zip";
}
return Path.Combine(directory, zipFileName);
}
}
///
/// 分卷数据单位
///
public enum ZipDataUnit
{
///
/// 1024字节
///
KB = 1024,
///
/// 1024 * 1024字节
///
MB = 1024 * 1024,
///
/// 1024 * 1024 * 1024字节
///
GB = 1024 * 1024 * 1024
}
}
------》调用示例
#region 示例
using (DataAccessAdapter adpter = new DataAccessAdapter())
{
LinqMetaData linq = new LinqMetaData(adp);
var Documentpath = linq.CfDocument.Where(c => c.Documentid == 3087).Select(c => c.Documentpath).FirstOrDefault().ToStr();//示例 获取对应的文件
var UNC_PATH = System.Configuration.ConfigurationManager.AppSettings["UNC_Path"];
var fileOrDirectoryName = System.IO.Path.Combine(UNC_PATH, Documentpath);
IFCA.BL.CM.FileCompressZipHelper.Compress(fileOrDirectoryName, 2);//分卷压缩 【默认压缩到 被压缩的目录】
//var zipPath= System.IO.Path.Combine("C:\\temp\\", "分卷压缩"+ ".zip");
//IFCA.BL.CM.FileCompressZipHelper.Compress(fileOrDirectoryName,zipPath, IFCA.BL.CM.ZipDataUnit.MB,5);//分卷压缩 【可以指定压缩目录、名称】
}
#endregion