zip压缩相关
1using System;
2using System.Collections.Generic;
3using System.Text;
4using System.IO;
5using ICSharpCode.SharpZipLib;
6using ICSharpCode.SharpZipLib.Zip;
7using ICSharpCode.SharpZipLib.Checksums;
8
9/*
10 * 解压缩
11 * 该程序压缩和解压配合才能使用
12 * 普通用 Winrar 压缩的文件该解压不能通过
13 * Modify By HJ 2007-10-25
14 */
15namespace ZipApplication
16{
17 /// <summary>
18 /// 压缩类
19 /// </summary>
20 public class ZipClass
21 {
22 /// <summary>
23 /// 递归压缩文件夹方法
24 /// </summary>
25 /// <param name="FolderToZip"></param>
26 /// <param name="s"></param>
27 /// <param name="ParentFolderName"></param>
28 private static bool ZipFileDictory(string FolderToZip, ZipOutputStream s, string ParentFolderName)
29 {
30 bool res = true;
31 string[] folders, filenames;
32 ZipEntry entry = null;
33 FileStream fs = null;
34 Crc32 crc = new Crc32();
35
36 try
37 {
38
39 //创建当前文件夹
40 entry = new ZipEntry(Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip) + "/")); //加上 “/” 才会当成是文件夹创建
41 s.PutNextEntry(entry);
42 s.Flush();
43
44
45 //先压缩文件，再递归压缩文件夹
46 filenames = Directory.GetFiles(FolderToZip);
47 foreach (string file in filenames)
48 {
49 //打开压缩文件
50 fs = File.OpenRead(file);
51
52 byte[] buffer = new byte[fs.Length];
53 fs.Read(buffer, 0, buffer.Length);
54 entry = new ZipEntry(Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip) + "/" + Path.GetFileName(file)));
55
56 entry.DateTime = DateTime.Now;
57 entry.Size = fs.Length;
58 fs.Close();
59
60 crc.Reset();
61 crc.Update(buffer);
62
63 entry.Crc = crc.Value;
64
65 s.PutNextEntry(entry);
66
67 s.Write(buffer, 0, buffer.Length);
68 }
69 }
70 catch
71 {
72 res = false;
73 }
74 finally
75 {
76 if (fs != null)
77 {
78 fs.Close();
79 fs = null;
80 }
81 if (entry != null)
82 {
83 entry = null;
84 }
85 GC.Collect();
86 GC.Collect(1);
87 }
88
89
90 folders = Directory.GetDirectories(FolderToZip);
91 foreach (string folder in folders)
92 {
93 if (!ZipFileDictory(folder, s, Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip))))
94 {
95 return false;
96 }
97 }
98
99 return res;
100 }
101
102 /// <summary>
103 /// 压缩目录
104 /// </summary>
105 /// <param name="FolderToZip">待压缩的文件夹，全路径格式</param>
106 /// <param name="ZipedFile">压缩后的文件名，全路径格式</param>
107 /// <returns></returns>
108 private static bool ZipFileDictory(string FolderToZip, string ZipedFile, String Password)
109 {
110 bool res;
111 if (!Directory.Exists(FolderToZip))
112 {
113 return false;
114 }
115
116 ZipOutputStream s = new ZipOutputStream(File.Create(ZipedFile));
117 s.SetLevel(6);
118 s.Password = Password;
119
120 res = ZipFileDictory(FolderToZip, s, "");
121
122 s.Finish();
123 s.Close();
124
125 return res;
126 }
127
128 /// <summary>
129 /// 压缩文件
130 /// </summary>
131 /// <param name="FileToZip">要进行压缩的文件名</param>
132 /// <param name="ZipedFile">压缩后生成的压缩文件名</param>
133 /// <returns></returns>
134 private static bool ZipFile(string FileToZip, string ZipedFile, String Password)
135 {
136 //如果文件没有找到，则报错
137 if (!File.Exists(FileToZip))
138 {
139 throw new System.IO.FileNotFoundException("指定要压缩的文件: " + FileToZip + " 不存在!");
140 }
141 //FileStream fs = null;
142 FileStream ZipFile = null;
143 ZipOutputStream ZipStream = null;
144 ZipEntry ZipEntry = null;
145
146 bool res = true;
147 try
148 {
149 ZipFile = File.OpenRead(FileToZip);
150 byte[] buffer = new byte[ZipFile.Length];
151 ZipFile.Read(buffer, 0, buffer.Length);
152 ZipFile.Close();
153
154 ZipFile = File.Create(ZipedFile);
155 ZipStream = new ZipOutputStream(ZipFile);
156 ZipStream.Password = Password;
157 ZipEntry = new ZipEntry(Path.GetFileName(FileToZip));
158 ZipStream.PutNextEntry(ZipEntry);
159 ZipStream.SetLevel(6);
160
161 ZipStream.Write(buffer, 0, buffer.Length);
162 }
163 catch
164 {
165 res = false;
166 }
167 finally
168 {
169 if (ZipEntry != null)
170 {
171 ZipEntry = null;
172 }
173 if (ZipStream != null)
174 {
175 ZipStream.Finish();
176 ZipStream.Close();
177 }
178 if (ZipFile != null)
179 {
180 ZipFile.Close();
181 ZipFile = null;
182 }
183 GC.Collect();
184 GC.Collect(1);
185 }
186
187 return res;
188 }
189
190 /// <summary>
191 /// 压缩文件 和 文件夹
192 /// </summary>
193 /// <param name="FileToZip">待压缩的文件或文件夹，全路径格式</param>
194 /// <param name="ZipedFile">压缩后生成的压缩文件名，全路径格式</param>
195 /// <returns></returns>
196 public static bool Zip(String FileToZip, String ZipedFile, String Password)
197 {
198 if (Directory.Exists(FileToZip))
199 {
200 return ZipFileDictory(FileToZip, ZipedFile, Password);
201 }
202 else if (File.Exists(FileToZip))
203 {
204 return ZipFile(FileToZip, ZipedFile, Password);
205 }
206 else
207 {
208 return false;
209 }
210 }
211 }
212
/// <summary>
/// 解压类
/// </summary>
public class UnZipClass
{
/// <summary>
/// 解压功能(解压压缩文件到指定目录)
/// </summary>
/// <param name="FileToUpZip">待解压的文件</param>
/// <param name="ZipedFolder">指定解压目标目录</param>
public static void UnZip(string FileToUpZip, string ZipedFolder,string Password)
{
if (!File.Exists(FileToUpZip))
{
return;
}
if (!Directory.Exists(ZipedFolder))
{
Directory.CreateDirectory(ZipedFolder);
}
ZipInputStream s = null;
ZipEntry theEntry = null;
string fileName;
FileStream streamWriter = null;
try
{
s = new ZipInputStream(File.OpenRead(FileToUpZip));
s.Password = Password;
while ((theEntry = s.GetNextEntry()) != null)
{
if (theEntry.Name != String.Empty)
{
fileName = Path.Combine(ZipedFolder, theEntry.Name);
///判断文件路径是否是文件夹
if (fileName.EndsWith("/") || fileName.EndsWith("\\"))
{
Directory.CreateDirectory(fileName);
continue;
}
streamWriter = File.Create(fileName);
int size = 2048;
byte[] data = new byte[2048];
while (true)
{
size = s.Read(data, 0, data.Length);
if (size > 0)
{
streamWriter.Write(data, 0, size);
}
else
{
break;
}
}
}
}
}
finally
{
if (streamWriter != null)
{
streamWriter.Close();
streamWriter = null;
}
if (theEntry != null)
{
theEntry = null;
}
if (s != null)
{
s.Close();
s = null;
}
GC.Collect();
GC.Collect(1);
}
}
}
}
