Asp.net 2.0 C#实现压缩/解压功能
Asp.net 2.0 C#实现压缩/解压功能 (示例代码下载)
(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
///
2
/// 压缩类
3
///
4
public
class ZipClass
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{
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 ///
42 /// 压缩目录
43 ///
44 ///
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 ///
82 /// 压缩文件
83 ///
84 ///
85 ///
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
///
111/// 解压类
112///
113
public
class UnZipClass
114
{
115 ///
116 /// 解压功能(解压压缩文件到指定目录)
117 ///
118 ///
119 ///
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
/// 压缩类3
///
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
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
/// 42
/// 压缩目录43
/// 44
/// 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
/// 82
/// 压缩文件83
/// 84
/// 85
/// 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
/// 111
/// 解压类112
///
113
public
class UnZipClass
114
{115
/// 116
/// 解压功能(解压压缩文件到指定目录)117
/// 118
/// 119
/// 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
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Height="44px" Text="压缩文件/文件夹示例" Width="366px">
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Height="44px" Text="压缩文件/文件夹示例" Width="366px">
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3. 后台页面代码
1
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
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