Asp.net 2.0 C#实现压缩/解压功能 (示例代码下载)
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2006年12月21日 18:55:00
(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<
4
public 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
/**//// >summary<2
/// 压缩类3
/// >/summary<4
public class ZipClass5
{ 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
try24
{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<113
public class UnZipClass114
{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
else149
{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 >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="width: 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 >br /<
14 >asp:Button ID="btZipDictory" runat="server" OnClick="btZipDictory_Click" Text="压缩目录" /<>br /<
15 >/td<
16 >td style="width: 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 >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="width: 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 >br /<
32 >asp:Button ID="btZipFile" runat="server" Text="压缩文件" OnClick="btZipFile_Click" /<>br /<
33 >/td<
34 >td style="width: 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 >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
>body<2
>form id="form1" runat="server"<3
>div<4
>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="width: 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
>br /<14
>asp:Button ID="btZipDictory" runat="server" OnClick="btZipDictory_Click" Text="压缩目录" /<>br /<15
>/td<16
>td style="width: 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
>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="width: 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
>br /<32
>asp:Button ID="btZipFile" runat="server" Text="压缩文件" OnClick="btZipFile_Click" /<>br /<33
>/td<34
>td style="width: 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
>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
public 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
http://www.cnblogs.com/Files/ChengKing/ZIP.rar
Trackback: http://tb.blog.csdn.net/TrackBack.aspx?PostId=1452150
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