C# ICSharpCode.SharpZipLib
C# ICSharpCode.SharpZipLib.dll文件压缩和解压功能类整理，上传文件或下载文件很常用
工作中我们很多时候需要进行对文件进行压缩，比较通用的压缩的dll就是ICSharpCode.SharpZipLib.dll，废话不多了，网上也有很多的资料，我将其最常用的两个函数整理了一下，提供了一个通用的类，这样在工作中可以快速的完成压缩和解压缩的动作哦
官网下载地址： http://www.icsharpcode.net/OpenSource/SharpZipLib/Download.aspx
1. 在项目中添加对ICSharpCode.SharpZipLib.dll的引用；
2. 在需要使用到ICSharpCode.SharpZipLib中定义的类的编码界面中将其导入(Imports)
1 using ICSharpCode.SharpZipLib.Zip;
2 using System;
3 using System.IO;
4
5 namespace ZTO.WayBill.Utilities
6 {
7 /// <summary>
8 /// 压缩类
9 /// http://www.cnblogs.com/kissdodog/p/3525295.html
10
11 /// </summary>
12 public class ZipHelper
13 {
14 /// <summary>
15 /// 压缩文件夹
16 /// </summary>
17 /// <param name="source">源目录</param>
18 /// <param name="s">ZipOutputStream对象</param>
19 public static void Compress(string source, ZipOutputStream s)
20 {
21 string[] filenames = Directory.GetFileSystemEntries(source);
22 foreach (string file in filenames)
23 {
24 if (Directory.Exists(file))
25 {
26 // 递归压缩子文件夹
27 Compress(file, s);
28 }
29 else
30 {
31 using (FileStream fs = File.OpenRead(file))
32 {
33 byte[] buffer = new byte[4 * 1024];
34 // 此处去掉盘符，如D:\123\1.txt 去掉D:
35 ZipEntry entry = new ZipEntry(file.Replace(Path.GetPathRoot(file), ""));
36 entry.DateTime = DateTime.Now;
37 s.PutNextEntry(entry);
38 int sourceBytes;
39 do
40 {
41 sourceBytes = fs.Read(buffer, 0, buffer.Length);
42 s.Write(buffer, 0, sourceBytes);
43 } while (sourceBytes > 0);
44 }
45 }
46 }
47 }
48
49 /// <summary>
50 /// 解压缩
51 /// </summary>
52 /// <param name="sourceFile">压缩包完整路径地址</param>
53 /// <param name="targetPath">解压路径是哪里</param>
54 /// <returns></returns>
55 public static bool Decompress(string sourceFile, string targetPath)
56 {
57 if (!File.Exists(sourceFile))
58 {
59 throw new FileNotFoundException(string.Format("未能找到文件 '{0}' ", sourceFile));
60 }
61 if (!Directory.Exists(targetPath))
62 {
63 Directory.CreateDirectory(targetPath);
64 }
65 using (var s = new ZipInputStream(File.OpenRead(sourceFile)))
66 {
67 ZipEntry theEntry;
68 while ((theEntry = s.GetNextEntry()) != null)
69 {
70 if (theEntry.IsDirectory)
71 {
72 continue;
73 }
74 string directorName = Path.Combine(targetPath, Path.GetDirectoryName(theEntry.Name));
75 string fileName = Path.Combine(directorName, Path.GetFileName(theEntry.Name));
76 if (!Directory.Exists(directorName))
77 {
78 Directory.CreateDirectory(directorName);
79 }
80 if (!String.IsNullOrEmpty(fileName))
81 {
82 using (FileStream streamWriter = File.Create(fileName))
83 {
84 int size = 4096;
85 byte[] data = new byte[size];
86 while (size > 0)
87 {
88 streamWriter.Write(data, 0, size);
89 size = s.Read(data, 0, data.Length);
90 }
91 }
92 }
93 }
94 }
95 return true;
96 }
97 }
98 }