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syziy 发表于 2008-10-4 21:38

ASP.NET实现文件的在线压缩和解压缩(带创建文件夹)

[b]ASP。NET技术的斑竹给大家来了个服务器上传文件并创建文件夹的例子,我来个[/b]用ASP.NET实现文件的在线压缩和解压缩
5l/P2{:a,eUm
T d,hj0Vs 我们经常会遇到批量上传的问题,也会遇到将某个目录下所有文件都上传到服务器上的问题。那么,如何解决此类问题呢?以前的技术一般采用ActiveX等方式,这里笔者采用SharpZlib来实现,听说VS2005已有压缩和解压缩的解决方案,笔者还没有时间用VS2005,所以就只好使用VS2003 + SharpZlib来解决问题了。 ;Pc4z.aDo2^Rq'VL

"Pg&RjH j%C"N   1、首先从这里下载0.84版本的SharpZlib源码及示例码。
!f L&U8Ek#]&P iKx,Y4Y~*|;Q
  2、下载下来之后你发现它没有VS2003的解决方案文件,没有关系。你可以自己建立,首先新建一个ZipUnzip的解决方案,然后,将上面经过解压缩之后的所有文件及目录COPY到你的解决方案所在的目录下。 Tw~i&F&ad9u ` oa!wC/L
'm%V9KF'J!_To
  3、在VS2003解决方案资源管理器(一般是在右上方中部点的位置)中点击显示所有文件按钮,然后可以见到很多“虚”的图标、文件及文件夹等,可以一次选择它们,然后包含进项目中。
)\G.R B:C S E%@:Igv\H5HA
  4、编译,最好使用Release选项,编译完成之后你可以在\bin\Release\看到ZipUnzip.dll的类了。如果你编译时报错,说什么AssemblyKeyFile之类的,你可以使用强命名工具新建一个,也可以将AssemblyInfo.cs中[assembly: AssemblyKeyFile("。。。。。")]改成:[assembly: AssemblyKeyFile("")] (不推荐这样做)。B3hd]+f i2|V6~

&AsM/Tl&S1Qo!O   5、新建一个WEBFORM项目,添加ZipUnzip.dll类的引用,然后添加如下文件及内容: O&O/[+Y\v#\b
R s!|.}.~ `*V

(B B | zQ\g,q [table=90,#e1e1e1][tr][td]// ------------------------------------------
:_hz|;T4{:d // 1. AttachmentUnZip.cs
|]`1d/yy8K0` K{ // ------------------------------------------#PJ~*D0zF ERti"hz
using System;
{7x:q"W*y&V)H using System.IO;
w%E3F-ap;qj using ICSharpCode.SharpZipLib.Zip;
%N:} s4W"|)w%V_B(c using ICSharpCode.SharpZipLib.GZip;\9wu6P yK"y|(nk
using ICSharpCode.SharpZipLib.BZip2;
? L V$U#Q] e"jA using ICSharpCode.SharpZipLib.Checksums;
1yo{*i,I0y se+S [w using ICSharpCode.SharpZipLib.Zip.Compression;"^,K \5pV&@"d
using ICSharpCode.SharpZipLib.Zip.Compression.Streams; Wt cW.u

j[ U&S tK7[(JL"q namespace WebZipUnzip!~?&v*UA VVh a
{
Ry`jJI;Dg   public class AttachmentUnZipC\H(S h_v`9T
  {
7~l's2@7hSs(T   public AttachmentUnZip()0bq fc5qEdS3c
  {}
oP)_Y/K5L \z5l)R)g   public static void UpZip(string zipFile)
T D#c0qM.Q$~[   {4Q!N&YI8f$w6A6z*Lz
  string []FileProperties=new string[2];
]Y3K I Eu5A G5A6k8o,^   FileProperties[0]=zipFile;//待解压的文件sP`.S&Z
  FileProperties[1]=zipFile.Substring(0,zipFile.LastIndexOf("\\")+1);//解压后放置的目标目录
7w0f ~8OT(f \K2K   UnZipClass UnZc=new UnZipClass(); _D eJ"b
  UnZc.UnZip(FileProperties);'ycb3C3g M9y Lf|z4i
  }
7F:k?n5fiA   }
*_0Mx:ceof'm }@x7g"~&d5oJ
q4GA*r.{Ym
// ---------------------------------------------WW xS1_&|.v
// 2. UnZipClass.cs)L _(r8Wd-o%i
// ---------------------------------------------+l2{G*zvQm
k y2i,e;Q;ApcC
using System;
(c5cF`(u+x3i using System.IO;
%t[4S[I8N0Xq0L using ICSharpCode.SharpZipLib.Zip;
A5f*?I1sbyD using ICSharpCode.SharpZipLib.GZip;
!MA'@!F.} using ICSharpCode.SharpZipLib.BZip2;7I x/]Q {*h(c K7v
using ICSharpCode.SharpZipLib.Checksums;
fi:U$[2O/JkW using ICSharpCode.SharpZipLib.Zip.Compression;2i*|y!JOgC
using ICSharpCode.SharpZipLib.Zip.Compression.Streams;
!C:?D"eY At#u-_t*{
$U#}3jol+Nr6j namespace WebZipUnzip
|LS#nN*V {
7GY!E&f.c_/X,s;@   public class UnZipClass
4c3Z"Z%M1sw\?   {
+d%L5B;DK;h5O5{   ///
I!c;P\do%y|"C&R   /// 解压文件DZ{jZS3|;X;T
  /// [(rf%h DH+m#G2U
  /// 包含要解压的文件名和要解压到的目录名数组~ f/h8yDc0N
  public void UnZip(string[] args)5q5E}bG'Cd
  {t!}'X&?'e q
  ZipInputStream s = new ZipInputStream(File.OpenRead(args[0]));2~bKY{D1v
  try)p@"On2i"kU
  { UK1?Of*kHq*h
  ZipEntry theEntry;
;^&AK j;\#R   while ((theEntry = s.GetNextEntry()) != null)
/_@0Eze   {
4WP2b6O.I2B1B u   string directoryName = Path.GetDirectoryName(args[1]);
#qQv+tU'y)c2]   string fileName = Path.GetFileName(theEntry.Name);
g`9`+B ot O;v&V(b{ i\
  //生成解压目录
rF6q QGa I%C   Directory.CreateDirectory(directoryName);
hW4z0?r
n+Foh6S*R^r   if (fileName != String.Empty) [2~GEP$mk?J4f
  {
HGE*md4N6Q   //解压文件到指定的目录
*q5P*fZE7j   FileStream streamWriter = File.Create(args[1]+fileName);8jHX`-yj7q5bxA
  int size = 2048; ]k[2W6V#n!Vb:Y6l
  byte[] data = new byte[2048];
Zi/q&F O+p|   while (true) 6_(n)P7K'R8[i? r
  {"a(? n,LJ5TS
  size = s.Read(data, 0, data.Length);
y|4T7{ HQ+g-]   if (size > 0)
%@w M+|Y4HmD   {w/`-IS)[jC:y&PNG
  streamWriter.Write(data, 0, size);F*S9t\^"by&nGn'\;q
  }
(^ amlu|"S`   else
!j%OV$cH8@,Z9[   {yI&Z5n0o-g1W
  break;F+PP!Skl
  }
:pPk^v   }`e/q)aE6@*f
  streamWriter.Close();/[4r"MX en Kx
  }
;J4u&H#V1I z;c   }
R1_M v ?R   s.Close();
"? ? J"h R}`.tAU5T1EH   }Bmf2x'Kx*Cqperb
  catch(Exception eu)
X}5ED T{R   {!y,u!f[sJ
  throw eu;g u{g9F\ AF
  }k]QQ&O^7v g _
  finally
x o)lL Lw+A   {
:H1^F`;IF   s.Close();[(m*`?p
  }
Q:N5RZ+W UY^   }//end UnZip
6_*k$pM tD j Zo
})y%of#\0@   public static bool UnZipFile(string file, string dir)
iV }w R5h%D9P   { _/q f4RKW$^h$i.bsp
  try
7pp%C\GM   {']S u2g,?S.z$];p#a.H
  if (!Directory.Exists(dir))&~8z8r/r{a
  Directory.CreateDirectory(dir);
/l)gZ gFuNG-H Lq{   string fileFullName = Path.Combine(dir,file);
q4dI1@(bA4i"}   ZipInputStream s = new ZipInputStream(File.OpenRead( fileFullName ));;Bf!tT6nbP
 
vVdGD7B4S&u   ZipEntry theEntry;
p-Iz6e9E9L   while ((theEntry = s.GetNextEntry()) != null)+y\ { dJF
  {
0^2O+n.P5T$V r5n   string directoryName = Path.GetDirectoryName(theEntry.Name);
.szNidJC   string fileName = Path.GetFileName(theEntry.Name);X)Vg;v1U!FG3D
 )\F7oec.e
  if (directoryName != String.Empty);X(Z&b$k*?+Y.n
  Directory.CreateDirectory( Path.Combine(dir, directoryName));;^ i4DdX!t}1F
  if (fileName != String.Empty);z0[gj*}1[CQm:aa
  {
r8D/_L|zdk&H4Z   FileStream streamWriter = File.Create( Path.Combine(dir,theEntry.Name) );0D~ Q X~H P
  int size = 2048;
J3mW(E\"UGZN/r   byte[] data = new byte[2048];.rP M&i ?L-E i
  while (true)
jJY4Jq3j@%t]} O   {
8S9Y;b6l"k   size = s.Read(data, 0, data.Length);
:Lqyf'b   if (size > 0)
x;K)]7T+h   {
$U$L9h g8j,O_&A6u G   streamWriter.Write(data, 0, size);
btA7w%q   }kL S1IuB'U
  elsegI} f$c'j!v*A
  {hm$z9e k
  break; xe#Wnnt,e(Q
  }d!xCdY1|1XXIb
  }BN`(D'CQKuLOh
  streamWriter.Close();Z `lm @ E
  }-eT7sMjUdX%G^8l&d
  }
]1QI'?6l;S4l   s.Close(); b,xy!BMa
  return true;
p,Fq;g"\WoA   }#OS5H,HPEa
  catch (Exception)$B:T_&R6g x D*D+|
  {
HfhmX2N^   throw;7Az _;u&|az
  }QfQ XEO+`
  }
t T3D5L5}m   }//end UnZipClass!R:J-Mf;C|Wb
  }
]~ ?$rZ5o"GO@ +j@-K |sB
// ----------------------------------------------#^R._]]3b1D
// 3. ZipClass.cs
:Rp._W)`l r)v2l // ----------------------------------------------
C7OF.j;F]}x-AA using System;?:M-}Ef!E8N K
using System.IO;
S'i |S1pB-l$`7H Y using ICSharpCode.SharpZipLib.Zip;
3AC!\q~-Q using ICSharpCode.SharpZipLib.GZip;"?PyH.Y-eJ&O
using ICSharpCode.SharpZipLib.BZip2;,r$|8PTc Q
using ICSharpCode.SharpZipLib.Checksums;'S^p;B'x9s)g"H
using ICSharpCode.SharpZipLib.Zip.Compression;Z@-E-`b/]6]
using ICSharpCode.SharpZipLib.Zip.Compression.Streams;9w$T z$KjX*TM

^7]3c8Vr]/~b|:[ namespace WebZipUnzip
J&}*oO+w(V0us {/AI6^1C:zG uaYn
  /// k3JSf!R1U;f5D7C
  /// 压缩文件
m0s\r-H6p   ///
2sWW[XG   public class ZipClass
#Vy E4[cky7O   { e!Oj#X!`
  public void ZipFile(string FileToZip, string ZipedFile ,int CompressionLevel, int BlockSize,string password)8O-F,h0r)F
  {
'?gIwW }   //如果文件没有找到,则报错#@n@'J7g
  if (! System.IO.File.Exists(FileToZip))
x3kw6D {%}g   {7Y%|0s J B+k
  throw new System.IO.FileNotFoundException("The specified file " + FileToZip + " could not be found. Zipping aborderd");:l8Zkvx]*x
  } bOVH4G)OW
qm{K_Yh&W.VS
  System.IO.FileStream StreamToZip = new System.IO.FileStream(FileToZip,System.IO.FileMode.Open , System.IO.File[url=http://www.bc-cn.net/Article/sjk/access/Index.html][color=#0000ff]ACCESS[/color][/url].Read);
Ey mq j l }&~+o   System.IO.FileStream ZipFile = System.IO.File.Create(ZipedFile);
;~/v+c$r7@ d }k%\j   ZipOutputStream ZipStream = new ZipOutputStream(ZipFile);
~k5r _le$^   ZipEntry ZipEntry = new ZipEntry("ZippedFile");s,{V-T3h Y,n
  ZipStream.PutNextEntry(ZipEntry);,vaL9Rx @
  ZipStream.SetLevel(CompressionLevel);
C+t0y"E V#uc'S7Fq   byte[] buffer = new byte[BlockSize];
2qiIlMB:E$G   System.Int32 size =StreamToZip.Read(buffer,0,buffer.Length);
2fT&M ~^O   ZipStream.Write(buffer,0,size);
#`upZ:Vo`   try
%zc+\S&\/q6m;_([w   {,F5q9G JR2B.R*U,A
  while (size < StreamToZip.Length)
'H ~N$W Q#| ]'B   {
2Bjc#v!NMa   int sizeRead =StreamToZip.Read(buffer,0,buffer.Length);D#BS7|(i#K
  ZipStream.Write(buffer,0,sizeRead);
o5Ei$Xyca'dY6?   size += sizeRead;X(wt"j*Fh}H LqD
  }@XZw)A8W
  }
J O)q l]*r&JQ3f   catch(System.Exception ex)2\%@5RH9Ve~x
  {
`2mW9HZ%A   throw ex;
}3Z6[6II&N#kb"}   }
&XryJR)u&eF   ZipStream.Finish();-j)L\.e ~4?
  ZipStream.Close();
9Xw v.g9^   StreamToZip.Close();
"Z z}IG!D!g   }5g)Tk4~c
S'J@ K'~h,RB:B
  public void ZipFileMain(string[] args)%OhB_pt*L-a
  {UE7a4Z/TK
  //string[] filenames = Directory.GetFiles(args[0]);j7x/da'T {
  string[] filenames = new string[]{args[0]};X"Z.s'j6tUq T\
 
W4j1KeJ5`B   Crc32 crc = new Crc32();G/L acd1x
  ZipOutputStream s = new ZipOutputStream(File.Create(args[1]));+x(hO+@f\ xS?

Ow b W9h#}3Cx7X/\ N   s.SetLevel(6); // 0 - store only to 9 - means best compression*CQ3`k:E1i
XT9hj f
  foreach (string file in filenames)
+xDn:P6V,S5l2I   {
;VL+Jqp`;^n!\D   //打开压缩文件
"~Mjf+IB:D.f,B8k   FileStream fs = File.OpenRead(file); "Z5i F:aBk6aY}
  byte[] buffer = new byte[fs.Length];,O:K1ai)V*Q$_
  fs.Read(buffer, 0, buffer.Length);A}F~)ux,S
  ZipEntry entry = new ZipEntry(file);
a.t0[Wa+QE
&|0a-dYo   entry.DateTime = DateTime.Now;
;H2frg%A%[%p jV4K+E 2{U5V4vTQ~
  // set Size and the crc, because the information
(v UY)z _Y-D{   // about the size and crc should be stored in the header
t u{l p   // if it is not set it is automatically written in the footer.
.s"e^{9P;V;d*tV3V,d   // (in this case size == crc == -1 in the header)U(z[%Vif
  // Some ZIP programs have problems with zip files that don't store3I^+PP.ZEb
  // the size and crc in the header.[JF wou
  entry.Size = fs.Length;
F v%R `\}   fs.Close();n YQ&_9H/A1q

4xmv}I \_([^   crc.Reset();%k3Vtn B:T+T%n[+j
  crc.Update(buffer);'@5i_yw4M F
'Z)aBQ ~9K/`9E
  entry.Crc = crc.Value;$Y?3T o sx

9xA;t)TS%~L   s.PutNextEntry(entry);
E\/[C7]+CdS#| Q3Q lC$cq1H_(k
  s.Write(buffer, 0, buffer.Length);Z|jp g^

GpPf;M   } /}z"f(VUaE
  s.Finish();
T'}G'L(E2bN4TTj   s.Close();Ht1NZZ6L[O
  }
1b |#DBPaW/}N!?   }
vtsMcs }9~Y4_Z%Vi4M%pz
4T`{i_.YQT m O
// ---------------------------------------------mUm d G_
// 4.WebForm1.aspx.cs'S}F,H8t[;w0U*Q Lz2au:y
//-------------------------------------------
9DI)U0\"\+^+q'lG0C
3Yh1nj)_2`"S+wC6A using System;
m!Z0R!P"]&EVw1cu using System.Collections;,\:aa8I:gZ l1r8V
using System.ComponentModel;Z5~4[3\&U{t
using System.Data;'[!{$k(E3v.T
using System.Drawing;
R {v{l\:\D using System.IO;7dF"s:M1~ Y _&J'u
using System.Web;
My2N j0B6x:b:U(? using System.Web.[url=http://www.bc-cn.net/Article/Search.asp?Field=Title&ClassID=&keyword=session&Submit=+%CB%D1%CB%F7+][color=#0000ff]session[/color][/url]State;p$Oi5g ho
using System.Web.UI;
gP.NVM using System.Web.UI.WebControls; }nQ!]4}7K
using System.Web.UI.HtmlControls; M(cD4CE
V3]2tT*h6F] o
namespace WebZipUnzip
qq p Y\.] {)U/Og8?H'e4Uva
  /// :mW3[xHL
  /// Summary description for WebForm1._'f y8Ue.W1k?I
  /// \)Iu9f ?'qT0]H}
  public class WebForm1 : System.Web.UI.Pagev Jw8B \
  {
Z^6` ]%w(z   protected System.Web.UI.WebControls.Button Button1;g"mjbt,J
  protected System.Web.UI.HtmlControls.HtmlInputFile File1;
'j~n4t{/}   protected System.Web.UI.WebControls.Button Button2;+@;S `m,| n

L/J#i|#j0e(]n[M QK   private void Page_Load(object sender, System.EventArgs e)
pR'mpC;u   {
Vq5C1ybk S ` t   // Put user code to initialize the page here
\S-aR)q9iA1VY   }
8e&p.w(G O|U (ZA5P;\ME |v
  #region Web Form Designer generated code
6_@C^7O'Y   override protected void OnInit(EventArgs e)[2L9Rjs
  {:U[u.W1F9m:tw
  //-l9n se5r]zQ
  // CODEGEN: This call is required by the [url=http://www.bc-cn.net/Article/net/aspx/Index.html][color=#0000ff]ASP.NET[/color][/url] Web Form Designer.
c3?h"Pe.j*b-ku   //
6F@-wB}0y9d   InitializeComponent();
yE E"B4U#?4L0d   base.OnInit(e);_Q P\m
  }1^:V1`,{EL1aV3~h

@-|^'a/K:YAN   /// 'L DR]u3dv\\T
  /// Required method for Designer support - do not modify T"B/Bt\ Kud
  /// the contents of this method with the code editor.
cZd"D0b{/y   /// T%mf*m ]
  private void InitializeComponent()
AM`v'V8S   { 5wO)YT![,k E6g
  this.Button1.Click += new System.EventHandler(this.Button1_Click);sE*G+Z~
  this.Button2.Click += new System.EventHandler(this.Button2_Click);
| D*J4]:a k4}w.|   this.Load += new System.EventHandler(this.Page_Load);
a2a+p~"Nb b*h"Ct+d.ab9]
  }
"Y9zv:f)|&g.Vj K   #endregion
U!MQp4u (?t%UZ*P:}"Y
  #region 压缩&u rT?T2O m R
  private void Button1_Click(object sender, System.EventArgs e)
+BR!|"fhX   {u6a}SXv0J b,X5l
  string []FileProperties=new string[2];
&xQ\,|"Q%Z$D$Sy C   string fullName=this.File1.PostedFile.FileName;//C:\test\a.txt!h'fO Nr![|
  string destPath=System.IO.Path.GetDirectoryName(fullName);//C:\test
~FtOk+P A(Vq   //待压缩文件
&a0Vcs g|]]5Jv   FileProperties[0]=fullName;*nm9O9z/fza

,eMm8V$T%nC2oC   //压缩后的目标文件
&N{NR_)a0o;a1k   FileProperties[1]= destPath +"\\"+ System.IO.Path.GetFileNameWithoutExtension(fullName) + ".zip";
9wUz.F8ihx\Hq   ZipClass Zc=new ZipClass();
a;G/rX Lc$`   Zc.ZipFileMain(FileProperties);7{ K{m;g if0P]r
;Wlq3EEM$Q#_
  //删除压缩前的文件 ?3_(Ewqy
  System.IO.File.Delete(fullName);\ _ Bs b9C/t
  } rCu'm R:}(V(j
c*NV(k c0o
  #endregion
_%?aN`Ael XlR
ra:\#@%f8_f @   #region 解压
2c~-? kv p   private void Button2_Click(object sender, System.EventArgs e)
2kpR$WU }^/c   {!s!n6a.^!}0d
  string fullName=this.File1.PostedFile.FileName;//C:\test\a.zip2e%?:ISv
  //解压文件
K~(AIv'i   //AttachmentUnZip.UpZip(fullName);
'rl$ohA+}X "M@_mUR6\:p
  // string[] FileProperties = new string[2];
j4yG rJX0C m&C.MY   // FileProperties[0] = fullName;//待解压的文件3KH8N2}/a c|
  // FileProperties[1] = System.IO.Path.GetDirectoryName(fullName);//解压后放置的目标目录
OD bN{7k RCH6s   // UnZipClass UnZc=new UnZipClass();#{skJ9ea%qe@
  // UnZc.UnZip(FileProperties);DCZ? Te;g
  string dir = System.IO.Path.GetDirectoryName(fullName);
%Y|(re+X3D   string fileName = System.IO.Path.GetFileName(fullName);
}rN W3|   UnZipClass.UnZipFile(fileName, dir);8b"`&gGNg)XT$U
  }
B/mO%xrV Ki   #endregion
2m,d:z_)I5?   }8Y%c(f M,X)ooe0T
}[/td][/tr][/table]

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