(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
publicclassZipClass
5
{
6publicstaticvoidZipFile(stringFileToZip,stringZipedFile,intCompressionLevel,intBlockSize)
7
{
8//如果文件没有找到，则报错
9if(!System.IO.File.Exists(FileToZip))
10{
11thrownewSystem.IO.FileNotFoundException("指定要压缩的文件:"+FileToZip+"不存在!");
12
}
13
14System.IO.FileStreamStreamToZip=newSystem.IO.FileStream(FileToZip,System.IO.FileMode.Open,System.IO.FileAccess.Read);
15System.IO.FileStreamZipFile=System.IO.File.Create(ZipedFile);
16ZipOutputStreamZipStream=newZipOutputStream(ZipFile);
17ZipEntryZipEntry=newZipEntry("ZippedFile");
18ZipStream.PutNextEntry(ZipEntry);
19ZipStream.SetLevel(CompressionLevel);
20byte[]buffer=newbyte[BlockSize];
21System.Int32size=StreamToZip.Read(buffer,0,buffer.Length);
22ZipStream.Write(buffer,0,size);
23try
24{
25while(size<StreamToZip.Length)
26{
27intsizeRead=StreamToZip.Read(buffer,0,buffer.Length);
28ZipStream.Write(buffer,0,sizeRead);
29size+=sizeRead;
30}
31}
32catch(System.Exceptionex)
33{
34throwex;
35}
36ZipStream.Finish();
37ZipStream.Close();
38StreamToZip.Close();
39}
40
41/**////<summary>
42///压缩目录
43///</summary>
44///<paramname="args">数组(数组[0]:要压缩的目录;数组[1]:压缩的文件名)</param>
45publicstaticvoidZipFileDictory(string[]args)
46{
47string[]filenames=Directory.GetFiles(args[0]);
48
49Crc32crc=newCrc32();
50ZipOutputStreams=newZipOutputStream(File.Create(args[1]));
51s.SetLevel(6);
52foreach(stringfileinfilenames)
53{
54//打开压缩文件
55FileStreamfs=File.OpenRead(file);
56
57byte[]buffer=newbyte[fs.Length];
58fs.Read(buffer,0,buffer.Length);
59ZipEntryentry=newZipEntry(file);
60
61entry.DateTime=DateTime.Now;
62
63entry.Size=fs.Length;
64fs.Close();
65
66crc.Reset();
67crc.Update(buffer);
68
69entry.Crc=crc.Value;
70
71s.PutNextEntry(entry);
72
73s.Write(buffer,0,buffer.Length);
74
75}
76
77s.Finish();
78s.Close();
79}
80
81/**////<summary>
82///压缩文件
83///</summary>
84///<paramname="FileToZip">要进行压缩的文件名</param>
85///<paramname="ZipedFile">压缩后生成的压缩文件名</param>
86publicstaticvoidZipFile(stringFileToZip,stringZipedFile)
87{
88//如果文件没有找到，则报错
89if(!File.Exists(FileToZip))
90{
91thrownewSystem.IO.FileNotFoundException("指定要压缩的文件:"+FileToZip+"不存在!");
92}
93FileStreamfs=File.OpenRead(FileToZip);
94byte[]buffer=newbyte[fs.Length];
95fs.Read(buffer,0,buffer.Length);
96fs.Close();
97
98FileStreamZipFile=File.Create(ZipedFile);
99ZipOutputStreamZipStream=newZipOutputStream(ZipFile);
100ZipEntryZipEntry=newZipEntry("ZippedFile");
101ZipStream.PutNextEntry(ZipEntry);
102ZipStream.SetLevel(6);
103
104ZipStream.Write(buffer,0,buffer.Length);
105ZipStream.Finish();
106ZipStream.Close();
107}
108}
109
110/**////<summary>
111///解压类
112///</summary>
113publicclassUnZipClass
114{
115/**////<summary>
116///解压功能(解压压缩文件到指定目录)
117///</summary>
118///<paramname="args">待解压的文件</param>
119///<paramname="args">指定解压目标目录</param>
120publicstaticvoidUnZip(string[]args)
121{
122ZipInputStreams=newZipInputStream(File.OpenRead(@args[0].Trim()));
123ZipEntrytheEntry;
124stringdirectoryName=Path.GetDirectoryName(@args[1].Trim());
125
126if(!Directory.Exists(@args[1].Trim()))
127{
128Directory.CreateDirectory(directoryName);
129}
130while((theEntry=s.GetNextEntry())!=null)
131{
132;
133stringfileName=Path.GetFileName(theEntry.Name);
134
135if(fileName!=String.Empty)
136{
137FileStreamstreamWriter=File.Create(@args[1].Trim()+fileName);
138
139intsize=2048;
140byte[]data=newbyte[2048];
141while(true)
142{
143size=s.Read(data,0,data.Length);
144if(size>0)
145{
146streamWriter.Write(data,0,size);
147}
148else
149{
150break;
151}
152}
153
154streamWriter.Close();
155}
156}
157s.Close();
158}
159
/**////<summary>2
///压缩类3
///</summary>4
publicclassZipClass5
{6
publicstaticvoidZipFile(stringFileToZip,stringZipedFile,intCompressionLevel,intBlockSize)7
{8
//如果文件没有找到，则报错9
if(!System.IO.File.Exists(FileToZip))10
{11
thrownewSystem.IO.FileNotFoundException("指定要压缩的文件:"+FileToZip+"不存在!");12
}13
14
System.IO.FileStreamStreamToZip=newSystem.IO.FileStream(FileToZip,System.IO.FileMode.Open,System.IO.FileAccess.Read);15
System.IO.FileStreamZipFile=System.IO.File.Create(ZipedFile);16
ZipOutputStreamZipStream=newZipOutputStream(ZipFile);17
ZipEntryZipEntry=newZipEntry("ZippedFile");18
ZipStream.PutNextEntry(ZipEntry);19
ZipStream.SetLevel(CompressionLevel);20
byte[]buffer=newbyte[BlockSize];21
System.Int32size=StreamToZip.Read(buffer,0,buffer.Length);22
ZipStream.Write(buffer,0,size);23
try24
{25
while(size<StreamToZip.Length)26
{27
intsizeRead=StreamToZip.Read(buffer,0,buffer.Length);28
ZipStream.Write(buffer,0,sizeRead);29
size+=sizeRead;30
}31
}32
catch(System.Exceptionex)33
{34
throwex;35
}36
ZipStream.Finish();37
ZipStream.Close();38
StreamToZip.Close();39
}40
41
/**////<summary>42
///压缩目录43
///</summary>44
///<paramname="args">数组(数组[0]:要压缩的目录;数组[1]:压缩的文件名)</param>45
publicstaticvoidZipFileDictory(string[]args)46
{47
string[]filenames=Directory.GetFiles(args[0]);48
49
Crc32crc=newCrc32();50
ZipOutputStreams=newZipOutputStream(File.Create(args[1]));51
s.SetLevel(6);52
foreach(stringfileinfilenames)53
{54
//打开压缩文件55
FileStreamfs=File.OpenRead(file);56
57
byte[]buffer=newbyte[fs.Length];58
fs.Read(buffer,0,buffer.Length);59
ZipEntryentry=newZipEntry(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
///<paramname="FileToZip">要进行压缩的文件名</param>85
///<paramname="ZipedFile">压缩后生成的压缩文件名</param>86
publicstaticvoidZipFile(stringFileToZip,stringZipedFile)87
{88
//如果文件没有找到，则报错89
if(!File.Exists(FileToZip))90
{91
thrownewSystem.IO.FileNotFoundException("指定要压缩的文件:"+FileToZip+"不存在!");92
}93
FileStreamfs=File.OpenRead(FileToZip);94
byte[]buffer=newbyte[fs.Length];95
fs.Read(buffer,0,buffer.Length);96
fs.Close();97
98
FileStreamZipFile=File.Create(ZipedFile);99
ZipOutputStreamZipStream=newZipOutputStream(ZipFile);100
ZipEntryZipEntry=newZipEntry("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
publicclassUnZipClass114
{115
/**////<summary>116
///解压功能(解压压缩文件到指定目录)117
///</summary>118
///<paramname="args">待解压的文件</param>119
///<paramname="args">指定解压目标目录</param>120
publicstaticvoidUnZip(string[]args)121
{122
ZipInputStreams=newZipInputStream(File.OpenRead(@args[0].Trim()));123
ZipEntrytheEntry;124
stringdirectoryName=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
stringfileName=Path.GetFileName(theEntry.Name);134
135
if(fileName!=String.Empty)136
{137
FileStreamstreamWriter=File.Create(@args[1].Trim()+fileName);138
139
intsize=2048;140
byte[]data=newbyte[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<formid="form1"runat="server">
3<div>
4 <asp:LabelID="Label1"runat="server"BackColor="#C0C0FF"Font-Size="XX-Large"
5Height="44px"Text="压缩文件/文件夹示例"Width="366px"></asp:Label>
6<asp:PanelID="Panel1"runat="server"Height="1px"Width="369px"BackColor="#FFFFC0">
7<
<body>2
<formid="form1"runat="server">3
<div>4
<asp:LabelID="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:PanelID="Panel1"runat="server"Height="1px"Width="369px"BackColor="#FFFFC0">7
<
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