原文链接:https://www.jb51.net/article/131706.htm
网上大部分都挺复杂
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.IO; using ICSharpCode.SharpZipLib.Zip; using ICSharpCode.SharpZipLib.Checksums; using System.Security.Cryptography; namespace zip压缩与解压 { public class ZipHelper { /// <summary> /// 压缩单个文件 /// </summary> /// <param name="fileToZip">需压缩的文件名</param> /// <param name="zipFile">压缩后的文件名(文件名都是绝对路径)</param> /// <param name="level">压缩等级(0-9)</param> /// <param name="password">压缩密码(解压是需要的密码)</param> public static void ZipFile(string fileToZip, string zipFile, int level = 5, string password = "123") { if (!File.Exists(fileToZip)) throw new FileNotFoundException("压缩文件" + fileToZip + "不存在"); using (FileStream fs = File.OpenRead(fileToZip)) { fs.Position = 0;//设置流的起始位置 byte[] buffer = new byte[(int)fs.Length]; fs.Read(buffer, 0, buffer.Length);//读取的时候设置Position,写入的时候不需要设置 fs.Close(); using (FileStream zfstram = File.Create(zipFile)) { using (ZipOutputStream zipstream = new ZipOutputStream(zfstram)) { zipstream.Password = md5(password);//设置属性的时候在PutNextEntry函数之前 zipstream.SetLevel(level); string fileName = fileToZip.Substring(fileToZip.LastIndexOf('\\') + 1); ZipEntry entry = new ZipEntry(fileName); zipstream.PutNextEntry(entry); zipstream.Write(buffer, 0, buffer.Length); } } } } /// <summary> /// 压缩多个文件目录 /// </summary> /// <param name="dirname">需要压缩的目录</param> /// <param name="zipFile">压缩后的文件名</param> /// <param name="level">压缩等级</param> /// <param name="password">密码</param> public static void ZipDir(string dirname, string zipFile, int level = 5, string password = "123") { ZipOutputStream zos = new ZipOutputStream(File.Create(zipFile)); zos.Password = md5(password); zos.SetLevel(level); addZipEntry(dirname, zos, dirname); zos.Finish(); zos.Close(); } /// <summary> /// 往压缩文件里面添加Entry /// </summary> /// <param name="PathStr">文件路径</param> /// <param name="zos">ZipOutputStream</param> /// <param name="BaseDirName">基础目录</param> private static void addZipEntry(string PathStr, ZipOutputStream zos, string BaseDirName) { DirectoryInfo dir = new DirectoryInfo(PathStr); foreach (FileSystemInfo item in dir.GetFileSystemInfos()) { if ((item.Attributes & FileAttributes.Directory) == FileAttributes.Directory)//如果是文件夹继续递归 { addZipEntry(item.FullName, zos, BaseDirName); } else { FileInfo f_item = (FileInfo)item; using (FileStream fs = f_item.OpenRead()) { byte[] buffer = new byte[(int)fs.Length]; fs.Position = 0; fs.Read(buffer, 0, buffer.Length); fs.Close(); ZipEntry z_entry = new ZipEntry(item.FullName.Replace(BaseDirName, "")); zos.PutNextEntry(z_entry); zos.Write(buffer, 0, buffer.Length); } } } } /// <summary> /// 解压多个文件目录 /// </summary> /// <param name="zfile">压缩文件绝对路径</param> /// <param name="dirname">解压文件目录</param> /// <param name="password">密码</param> public static void UnZip(string zfile, string dirname, string password) { if (!Directory.Exists(dirname)) Directory.CreateDirectory(dirname); using (ZipInputStream zis = new ZipInputStream(File.OpenRead(zfile))) { zis.Password = md5(password); ZipEntry entry; while ((entry = zis.GetNextEntry()) != null) { var strArr = entry.Name.Split('\\');//这边判断压缩文件里面是否存在目录,存在的话先创建目录后继续解压 if (strArr.Length > 2) Directory.CreateDirectory(dirname + @"\" + strArr[1]); using (FileStream dir_fs = File.Create(dirname + entry.Name)) { int size = 1024 * 2; byte[] buffer = new byte[size]; while (true) { size = zis.Read(buffer, 0, buffer.Length); if (size > 0) dir_fs.Write(buffer, 0, size); else break; } } } } } private static string md5(string pwd) { var res = ""; MD5 md = MD5.Create(); byte[] s = md.ComputeHash(Encoding.Default.GetBytes(pwd)); for (int i = 0; i < s.Length; i++) res = res + s[i].ToString("X"); return res; } } }
调用函数如下:
static void Main(string[] args) { var str = @"\学籍导入模板.xls"; //var arr=str.Split('\\'); var filePath = @"D:\程序文件\VS2010学习\StudyProgram\zip压缩与解压\File\学籍导入模板.xls"; //ZipHelper.ZipFile(filePath, @"D:\程序文件\VS2010学习\StudyProgram\zip压缩与解压\File\test.zip", 6, "123"); var dirPath = @"D:\程序文件\VS2010学习\StudyProgram\zip压缩与解压"; //ZipHelper.ZipDir(dirPath + @"\File", dirPath + @"\File.zip", 6, "huage"); ZipHelper.UnZip(dirPath + @"\File.zip", dirPath + @"\test", "huage"); Console.ReadKey(); }
标签:fs,string,C#,dll,buffer,File,new,ICSharpCode,using From: https://www.cnblogs.com/Dongmy/p/18118594