Asp.net 2.0 C#实现压缩/解压功能 (示例代码)-白红宇的个人博客

Asp.net 2.0 C#实现压缩/解压功能 (示例代码)

发布日期：2022-02-19 23:50:21 浏览次数：30 分类：技术文章

本文共 7207 字，大约阅读时间需要 24 分钟。

(一). 实现功能

对文件及目录的压缩及解压功能

(二). 运行图片示例

/// <summary>

/// 压缩类

/// </summary>

public

class

ZipClass

{

public static void ZipFile(string FileToZip, string ZipedFile, int CompressionLevel, int BlockSize)

{

//如果文件没有找到，则报错

if (!System.IO.File.Exists(FileToZip))

{

throw new System.IO.FileNotFoundException("指定要压缩的文件: " + FileToZip + " 不存在!");

}

System.IO.FileStream StreamToZip = new System.IO.FileStream(FileToZip, System.IO.FileMode.Open, System.IO.FileAccess.Read);

System.IO.FileStream ZipFile = System.IO.File.Create(ZipedFile);

ZipOutputStream ZipStream = new ZipOutputStream(ZipFile);

ZipEntry ZipEntry = new ZipEntry("ZippedFile");

ZipStream.PutNextEntry(ZipEntry);

ZipStream.SetLevel(CompressionLevel);

byte[] buffer = new byte[BlockSize];

System.Int32 size = StreamToZip.Read(buffer, 0, buffer.Length);

ZipStream.Write(buffer, 0, size);

try

{

while (size < StreamToZip.Length)

{

int sizeRead = StreamToZip.Read(buffer, 0, buffer.Length);

ZipStream.Write(buffer, 0, sizeRead);

size += sizeRead;

}

catch (System.Exception ex)

{

throw ex;

}

ZipStream.Finish();

ZipStream.Close();

StreamToZip.Close();

}

/// <summary>

/// 压缩目录

/// </summary>

/// <param name="args">数组(数组[0]: 要压缩的目录; 数组[1]: 压缩的文件名)</param>

public static void ZipFileDictory(string[] args)

{

string[] filenames = Directory.GetFiles(args[0]);

Crc32 crc = new Crc32();

ZipOutputStream s = new ZipOutputStream(File.Create(args[1]));

s.SetLevel(6);

foreach (string file in filenames)

{

//打开压缩文件

FileStream fs = File.OpenRead(file);

byte[] buffer = new byte[fs.Length];

fs.Read(buffer, 0, buffer.Length);

ZipEntry entry = new ZipEntry(file);

entry.DateTime = DateTime.Now;

entry.Size = fs.Length;

fs.Close();

crc.Reset();

crc.Update(buffer);

entry.Crc = crc.Value;

s.PutNextEntry(entry);

s.Write(buffer, 0, buffer.Length);

}

s.Finish();

s.Close();

}

/// <summary>

/// 压缩文件

/// </summary>

/// <param name="FileToZip">要进行压缩的文件名</param>

/// <param name="ZipedFile">压缩后生成的压缩文件名</param>

public static void ZipFile(string FileToZip, string ZipedFile)

{

//如果文件没有找到，则报错

if (!File.Exists(FileToZip))

{

throw new System.IO.FileNotFoundException("指定要压缩的文件: " + FileToZip + " 不存在!");

}

FileStream fs = File.OpenRead(FileToZip);

byte[] buffer = new byte[fs.Length];

fs.Read(buffer, 0, buffer.Length);

fs.Close();

FileStream ZipFile = File.Create(ZipedFile);

ZipOutputStream ZipStream = new ZipOutputStream(ZipFile);

100

ZipEntry ZipEntry = new ZipEntry("ZippedFile");

101

ZipStream.PutNextEntry(ZipEntry);

102

ZipStream.SetLevel(6);

103

104

ZipStream.Write(buffer, 0, buffer.Length);

105

ZipStream.Finish();

106

ZipStream.Close();

107

}

108

}

109

110

/// <summary>

111

/// 解压类

112

/// </summary>

113

public

class

UnZipClass

114

{

115

/// <summary>

116

/// 解压功能(解压压缩文件到指定目录)

117

/// </summary>

118

/// <param name="args">待解压的文件</param>

119

/// <param name="args">指定解压目标目录</param>

120

public static void UnZip(string[] args)

121

{

122

ZipInputStream s = new ZipInputStream(File.OpenRead(@args[0].Trim()));

123

ZipEntry theEntry;

124

string directoryName = Path.GetDirectoryName(@args[1].Trim());

125

126

if (!Directory.Exists(@args[1].Trim()))

127

{

128

Directory.CreateDirectory(directoryName);

129

}

130

while ((theEntry = s.GetNextEntry()) != null)

131

{

132

;

133

string fileName = Path.GetFileName(theEntry.Name);

134

135

if (fileName != String.Empty)

136

{

137

FileStream streamWriter = File.Create(@args[1].Trim() + fileName);

138

139

int size = 2048;

140

byte[] data = new byte[2048];

141

while (true)

142

{

143

size = s.Read(data, 0, data.Length);

144

if (size > 0)

145

{

146

streamWriter.Write(data, 0, size);

147

}

148

else

149

{

150

break;

151

}

152

}

153

154

streamWriter.Close();

155

}

156

}

157

s.Close();

158

}

2. 前台页面代码

<body>

<div>

 <asp:Label ID="Label1" runat="server" BackColor="#C0C0FF" Font-Size="XX-Large"

Height="44px" Text="压缩文件/文件夹示例" Width="366px"></asp:Label>

<asp:Panel ID="Panel1" runat="server" Height="1px" Width="369px" BackColor="#FFFFC0">

<tr>

<asp:Label ID="lbDisplay" runat="server" Text="压缩目录(from/to):" Width="153px"></asp:Label><asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>

<br />

<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>

 <br />

<asp:Button ID="btZipDictory" runat="server" OnClick="btZipDictory_Click" Text="压缩目录" /><br />

</td>

<asp:Label ID="Label2" runat="server" Text="解压目录(from/to):" Width="154px"></asp:Label>

<asp:TextBox ID="TextBox3" runat="server"></asp:TextBox>

<br />

<asp:TextBox ID="TextBox4" runat="server"></asp:TextBox>

 <br />

<asp:Button ID="btUnZipDictory" runat="server" Text="解压目录" OnClick="btUnZipDictory_Click" /><br />

</td>

</tr>

<tr>

<asp:Label ID="Label3" runat="server" Text="压缩文件(from/to):" Width="153px"></asp:Label>

<asp:TextBox ID="TextBox5" runat="server"></asp:TextBox>

<br />

<asp:TextBox ID="TextBox6" runat="server"></asp:TextBox>

 <br />

<asp:Button ID="btZipFile" runat="server" Text="压缩文件" OnClick="btZipFile_Click" /><br />

</td>

<asp:Label ID="Label4" runat="server" Text="解压文件(from/to):" Width="154px"></asp:Label>

<asp:TextBox ID="TextBox7" runat="server"></asp:TextBox>

<br />

<asp:TextBox ID="TextBox8" runat="server"></asp:TextBox>

 <br />

<asp:Button ID="btUnZipFile" runat="server" Text="解压文件" OnClick="btUnZipFile_Click" /><br />

</td>

</tr>

</table>

<asp:Label ID="lbMessage" runat="server" Width="368px"></asp:Label><br />

<br />

</asp:Panel>

</div>

</form>

</body>

3. 后台页面代码

public

partial

class

_Default : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

}

protected void btZipDictory_Click(object sender, EventArgs e)

{

string[] FilePathS = new string[2];

FilePathS[0] = TextBox1.Text.Trim(); //待压缩的文件目录

FilePathS[1] = TextBox2.Text.Trim(); //生成的目标文件

ZipClass.ZipFileDictory(FilePathS);

}

protected void btUnZipDictory_Click(object sender, EventArgs e)

{

string[] FilePathS = new string[2];

FilePathS[0] = TextBox3.Text.Trim(); //待解压的文件

FilePathS[1] = TextBox4.Text.Trim(); //解压目标存放目录

UnZipClass.UnZip(FilePathS);

}

protected void btZipFile_Click(object sender, EventArgs e)

{

string[] FilePathS = new string[2];

FilePathS[0] = TextBox5.Text.Trim(); //待压缩的文件

FilePathS[1] = TextBox6.Text.Trim(); //生成的压缩文件名

ZipClass.ZipFile(FilePathS[0], FilePathS[1]);

}

protected void btUnZipFile_Click(object sender, EventArgs e)

{

string[] FilePathS = new string[2];

FilePathS[0] = TextBox7.Text.Trim(); //待解压的文件

FilePathS[1] = TextBox8.Text.Trim(); //解压目标存放目录

UnZipClass.UnZip(FilePathS);

}

转载地址：https://blog.csdn.net/lerrywang008/article/details/1830616 如侵犯您的版权，请留言回复原文章的地址，我们会给您删除此文章，给您带来不便请您谅解！

上一篇：新编日语-第9课　家族

下一篇：新编日语-第2课　はじめまして

发表评论

关于作者

喝酒易醉，品茶养心，人生如梦，品茶悟道，何以解忧？唯有杜康！

-- 愿君每日到此一游！

发表评论

最新留言

关于作者

推荐文章