【增加】增加ZipHelper：压缩文件和解压zip格式文件的功能；

Learun.Framework.Ultimate V7/Learun.Framework.Module/Learun.Util/Learun.Util/Learun.Util.csproj

@@ -141,6 +141,7 @@
     <Compile Include="Tree\TreeModel.cs" />
     <Compile Include="Web\VerifyCode.cs" />
     <Compile Include="Web\WebHelper.cs" />
+    <Compile Include="Web\ZipHelper.cs" />
     <Compile Include="XML\Xml.cs" />
   </ItemGroup>
   <ItemGroup>

Learun.Framework.Ultimate V7/Learun.Framework.Module/Learun.Util/Learun.Util/Web/ZipHelper.cs

@@ -0,0 +1,160 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.IO;
+using System.Diagnostics;
+using ICSharpCode.SharpZipLib;
+using ICSharpCode.SharpZipLib.Zip;
+using ICSharpCode.SharpZipLib.Checksums;
+using ICSharpCode.SharpZipLib.Core;
+
+namespace ZipOneCode.ZipProvider
+{
+    public class ZipHelper
+    {
+        /// <summary>
+        /// 压缩文件
+        /// </summary>
+        /// <param name="sourceFilePath"></param>
+        /// <param name="destinationZipFilePath"></param>
+        public static void CreateZip(string sourceFilePath, string destinationZipFilePath)
+        {
+            if (sourceFilePath[sourceFilePath.Length - 1] != System.IO.Path.DirectorySeparatorChar)
+                sourceFilePath += System.IO.Path.DirectorySeparatorChar;
+
+            ZipOutputStream zipStream = new ZipOutputStream(File.Create(destinationZipFilePath));
+            zipStream.SetLevel(6);  // 压缩级别 0-9
+            CreateZipFiles(sourceFilePath, zipStream, sourceFilePath);
+
+            zipStream.Finish();
+            zipStream.Close();
+        }
+
+        /// <summary>
+        /// 递归压缩文件
+        /// </summary>
+        /// <param name="sourceFilePath">待压缩的文件或文件夹路径</param>
+        /// <param name="zipStream">打包结果的zip文件路径（类似 D:\WorkSpace\a.zip）,全路径包括文件名和.zip扩展名</param>
+        /// <param name="staticFile"></param>
+        private static void CreateZipFiles(string sourceFilePath, ZipOutputStream zipStream, string staticFile)
+        {
+            //Crc32 crc = new Crc32();
+            string[] filesArray = Directory.GetFileSystemEntries(sourceFilePath);
+            foreach (string file in filesArray)
+            {
+                if (Directory.Exists(file))                     //如果当前是文件夹，递归
+                {
+                    CreateZipFiles(file, zipStream, staticFile);
+                }
+
+                else                                            //如果是文件，开始压缩
+                {
+                    string tempFile = file.Substring(staticFile.LastIndexOf("\\") + 1);
+                    ZipEntry entry = new ZipEntry(tempFile);
+                    zipStream.PutNextEntry(entry);
+
+                    FileStream fileStream = File.OpenRead(file);
+
+                    byte[] buffer = new byte[fileStream.Length];
+                    fileStream.Read(buffer, 0, buffer.Length);
+
+                    //entry.DateTime = DateTime.Now;
+                    //entry.Size = fileStream.Length;
+                    //crc.Reset();
+                    //crc.Update(buffer);
+                    //entry.Crc = crc.Value;
+
+                    zipStream.Write(buffer, 0, buffer.Length);
+                    fileStream.Close();
+
+                }
+            }
+        }
+
+        /// <summary>  
+        /// 功能：解压zip格式的文件。  
+        /// </summary>  
+        /// <param name="zipFilePath">压缩文件路径</param>  
+        /// <param name="unZipDir">解压文件存放路径,为空时默认与压缩文件同一级目录下，跟压缩文件同名的文件夹</param>  
+        /// <returns>解压是否成功</returns>  
+        public static bool UnZip(string zipFilePath, string unZipDir)
+        {
+            try
+            {
+                if (zipFilePath == string.Empty)
+                {
+                    throw new Exception("压缩文件不能为空！");
+                }
+                if (!File.Exists(zipFilePath))
+                {
+                    throw new FileNotFoundException("压缩文件不存在！");
+                }
+                //解压文件夹为空时默认与压缩文件同一级目录下，跟压缩文件同名的文件夹  
+                if (unZipDir == string.Empty)
+                {
+                    unZipDir = zipFilePath.Replace(Path.GetFileName(zipFilePath), Path.GetFileNameWithoutExtension(zipFilePath));
+                }
+                if (!unZipDir.EndsWith("/"))
+                {
+                    unZipDir += "/";
+                }
+                if (!Directory.Exists(unZipDir))
+                {
+                    Directory.CreateDirectory(unZipDir);
+                }
+                using (var s = new ZipInputStream(File.OpenRead(zipFilePath)))
+                {
+
+                    ZipEntry theEntry;
+                    
+                    while ((theEntry = s.GetNextEntry()) != null)
+                    {
+                        string directoryName = Path.GetDirectoryName(theEntry.Name);
+                        string fileName = Path.GetFileName(theEntry.Name);
+                        if (!string.IsNullOrEmpty(directoryName))
+                        {
+                            Directory.CreateDirectory(unZipDir + directoryName);
+                        }
+                        if (directoryName != null && !directoryName.EndsWith("/"))
+                        {
+                        }
+
+                        if (fileName != String.Empty)
+                        {
+                            using (FileStream streamWriter = File.Create(unZipDir + theEntry.Name))
+                            {
+
+                                int size;
+                                byte[] data = new byte[2048];
+                                while (true)
+                                {
+                                    size = s.Read(data, 0, data.Length);
+                                    if (size > 0)
+                                    {
+                                        streamWriter.Write(data, 0, size);
+                                    }
+                                    else
+                                    {
+                                        break;
+                                    }
+                                }
+                                streamWriter.Close();
+                            }
+                        }
+                    }
+                    s.Close();
+                }
+                return true;
+            }
+            catch (Exception e)
+            {
+
+                return false;
+            }
+
+        }
+
+
+    }
+}