Asp.net 2.0 C#实现压缩/解压功能 [转=向作者‘肖相’无私共享精神致敬]

(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

  (三).代码

   1. 压缩类

  1/**//// <summary>
  2/// 压缩类
  3/// </summary>
  4public class ZipClass
  5{   
  6    public static void ZipFile(string FileToZip, string ZipedFile, int CompressionLevel, int BlockSize)
  7    {
  8        //如果文件没有找到，则报错
  9        if (!System.IO.File.Exists(FileToZip))
 10        {
 11            throw new System.IO.FileNotFoundException("指定要压缩的文件: " + FileToZip + " 不存在!");
 12        }
 13
 14        System.IO.FileStream StreamToZip = new System.IO.FileStream(FileToZip, System.IO.FileMode.Open, System.IO.FileAccess.Read);
 15        System.IO.FileStream ZipFile = System.IO.File.Create(ZipedFile);
 16        ZipOutputStream ZipStream = new ZipOutputStream(ZipFile);
 17        ZipEntry ZipEntry = new ZipEntry("ZippedFile");
 18        ZipStream.PutNextEntry(ZipEntry);
 19        ZipStream.SetLevel(CompressionLevel);
 20        byte[] buffer = new byte[BlockSize];
 21        System.Int32 size = StreamToZip.Read(buffer, 0, buffer.Length);
 22        ZipStream.Write(buffer, 0, size);
 23        try
 24        {
 25            while (size < StreamToZip.Length)
 26            {
 27                int sizeRead = StreamToZip.Read(buffer, 0, buffer.Length);
 28                ZipStream.Write(buffer, 0, sizeRead);
 29                size += sizeRead;
 30            }
 31        }
 32        catch (System.Exception ex)
 33        {
 34            throw ex;
 35        }
 36        ZipStream.Finish();
 37        ZipStream.Close();
 38        StreamToZip.Close();
 39    }
 40
 41    /**//// <summary>
 42    /// 压缩目录
 43    /// </summary>
 44    /// <param name="args">数组(数组[0]: 要压缩的目录; 数组[1]: 压缩的文件名)</param>
 45    public static void ZipFileDictory(string[] args)
 46    {
 47        string[] filenames = Directory.GetFiles(args[0]);
 48
 49        Crc32 crc = new Crc32();
 50        ZipOutputStream s = new ZipOutputStream(File.Create(args[1]));            
 51        s.SetLevel(6); 
 52        foreach (string file in filenames)
 53        {
 54            //打开压缩文件
 55            FileStream fs = File.OpenRead(file);
 56
 57            byte[] buffer = new byte[fs.Length];
 58            fs.Read(buffer, 0, buffer.Length);
 59            ZipEntry entry = new ZipEntry(file);
 60
 61            entry.DateTime = DateTime.Now;
 62            
 63            entry.Size = fs.Length;
 64            fs.Close();
 65
 66            crc.Reset();
 67            crc.Update(buffer);
 68
 69            entry.Crc = crc.Value;
 70
 71            s.PutNextEntry(entry);
 72
 73            s.Write(buffer, 0, buffer.Length);
 74
 75        }
 76
 77        s.Finish();
 78        s.Close();
 79    }
 80
 81    /**//// <summary>
 82    /// 压缩文件
 83    /// </summary>
 84    /// <param name="FileToZip">要进行压缩的文件名</param>
 85    /// <param name="ZipedFile">压缩后生成的压缩文件名</param>
 86    public static void ZipFile(string FileToZip, string ZipedFile)
 87    {
 88        //如果文件没有找到，则报错
 89        if (!File.Exists(FileToZip))
 90        {
 91            throw new System.IO.FileNotFoundException("指定要压缩的文件: " + FileToZip + " 不存在!");
 92        }            
 93        FileStream fs = File.OpenRead(FileToZip);
 94        byte[] buffer = new byte[fs.Length];
 95        fs.Read(buffer, 0, buffer.Length);
 96        fs.Close();
 97
 98        FileStream ZipFile = File.Create(ZipedFile);
 99        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>
113public 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    }
159

2. 前台页面代码

 1      <body>
 2    <form id="form1" runat="server">
 3    <div>
 4        &nbsp;<asp:Label ID="Label1" runat="server" BackColor="#C0C0FF" Font-Size="XX-Large"
 5            Height="44px" Text="压缩文件/文件夹示例" Width="366px"></asp:Label>
 6        <asp:Panel ID="Panel1" runat="server" Height="1px" Width="369px" BackColor="#FFFFC0">
 7            <table width="100%" height="100%">
 8                <tr>
 9                    <td style=" 3px" valign="top">
10                        <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>
11            <br />
12            <asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
13            &nbsp;<br />
14            <asp:Button ID="btZipDictory" runat="server" OnClick="btZipDictory_Click" Text="压缩目录" /><br />
15                    </td>
16                    <td style=" 4px" valign="middle">
17                        <asp:Label ID="Label2" runat="server" Text="解压目录(from/to):" Width="154px"></asp:Label>
18                        <asp:TextBox ID="TextBox3" runat="server"></asp:TextBox>
19                        <br />
20                        <asp:TextBox ID="TextBox4" runat="server"></asp:TextBox>
21                        &nbsp;<br />
22                        <asp:Button ID="btUnZipDictory" runat="server" Text="解压目录" OnClick="btUnZipDictory_Click" /><br />
23                    </td>              
24                </tr>
25                <tr>
26                    <td style=" 3px; height: 150px" valign="top">
27                        <asp:Label ID="Label3" runat="server" Text="压缩文件(from/to):" Width="153px"></asp:Label>
28                        <asp:TextBox ID="TextBox5" runat="server"></asp:TextBox>
29                        <br />
30                        <asp:TextBox ID="TextBox6" runat="server"></asp:TextBox>
31                        &nbsp;<br />
32                        <asp:Button ID="btZipFile" runat="server" Text="压缩文件" OnClick="btZipFile_Click" /><br />
33                    </td>
34                    <td style=" 4px; height: 150px" valign="top">
35                        <asp:Label ID="Label4" runat="server" Text="解压文件(from/to):" Width="154px"></asp:Label>
36                        <asp:TextBox ID="TextBox7" runat="server"></asp:TextBox>
37                        <br />
38                        <asp:TextBox ID="TextBox8" runat="server"></asp:TextBox>
39                        &nbsp;<br />
40                        <asp:Button ID="btUnZipFile" runat="server" Text="解压文件" OnClick="btUnZipFile_Click" /><br />
41                    </td>
42             
43                </tr>
44     
45            </table>
46            <asp:Label ID="lbMessage" runat="server" Width="368px"></asp:Label><br />
47            <br />
48        </asp:Panel>
49    
50    </div>
51    </form>
52</body>
53

3. 后台页面代码

 1public partial class _Default : System.Web.UI.Page 
 2{
 3    protected void Page_Load(object sender, EventArgs e)
 4    {
 5
 6    }
 7    protected void btZipDictory_Click(object sender, EventArgs e)
 8    {
 9        string[] FilePathS = new string[2];
10        FilePathS[0] = TextBox1.Text.Trim();  //待压缩的文件目录
11        FilePathS[1] = TextBox2.Text.Trim();  //生成的目标文件        
12        ZipClass.ZipFileDictory(FilePathS);
13    }
14    protected void btUnZipDictory_Click(object sender, EventArgs e)
15    {
16        string[] FilePathS = new string[2];
17        FilePathS[0] = TextBox3.Text.Trim();  //待解压的文件
18        FilePathS[1] = TextBox4.Text.Trim();  //解压目标存放目录
19        UnZipClass.UnZip(FilePathS);
20    }
21    protected void btZipFile_Click(object sender, EventArgs e)
22    {
23        string[] FilePathS = new string[2];
24        FilePathS[0] = TextBox5.Text.Trim();  //待压缩的文件
25        FilePathS[1] = TextBox6.Text.Trim();  //生成的压缩文件名
26        ZipClass.ZipFile(FilePathS[0], FilePathS[1]);
27
28    }
29    protected void btUnZipFile_Click(object sender, EventArgs e)
30    {
31        string[] FilePathS = new string[2];
32        FilePathS[0] = TextBox7.Text.Trim();  //待解压的文件
33        FilePathS[1] = TextBox8.Text.Trim();  //解压目标存放目录
34        UnZipClass.UnZip(FilePathS);
35    }
36}
37

(四). 示例代码下载

     https://files.cnblogs.com/ChengKing/ZIP.rar