c#压缩解压缩

1、c#压缩和解压缩文件 使用SharpZip压缩与解压缩的实战经验 首先，在 下载源码，找到“ZipConstants.cs”修改public static string ConvertToString(byte data      return Encoding.GetEncoding("gb2312".GetString(data, 0, data.Length;      /return Encoding.ASCII.GetString(da

2、ta,0, data.Length;  public static byte ConvertToArray(string str       return Encoding.GetEncoding("gb2312".GetBytes(str;       /return Encoding.ASCII.GetBytes(str;如此就可支持中文名称了以下是我写的压缩与解压缩的代码：using System;using Syste

3、m.Collections;using System.ComponentModel;using System.Data;using System.Drawing;using System.Web;using System.Web.SessionState;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.HtmlControls;using ICSharpCode.SharpZipLib.Zip;namespace OA       

4、;  /          / WebForm1 的摘要说明。         /          public class WebForm1 : System.Web.UI.Page              

5、60;        public string ServerDir;              private void Page_Load(object sender, System.EventArgs e              

6、                / 在此处放置用户代码以初始化页面                     this.ServerDir = Page.MapPath("."   

7、                  this.ZipFile("01.txt*02.txt*000.zip"  /只是示例，具体的大家自己去实现                   

8、0; this.ZipFile("01.txt*02.txt*001.zip"                     this.UnZipFile("000.zip*001.zip"              

9、;    public string ShortDir(string s                       /将文件的绝对路径转为相对路径               string d=s.Repla

10、ce(ServerDir,""               return d;                  /压缩文件 p 为客户端传回来的文件列表：文件名+压缩包的名称        

11、;  public void ZipFile(string p                              string tmp = p.Split(new char'*'  /分离文件列表    &

12、#160;              if(tmptmp.Length-1!=""  /压缩包名称不为空                           &

13、#160;                    ZipOutputStream u = new ZipOutputStream(File.Create(ServerDir+tmptmp.Length-1;            /新建压缩文件流 “ZipOutputStream”

14、0;                         for(int i =0;i                       &

15、#160;                                      if (tmpi!=""   /分离出来的文件名不为空      

16、;                                                  

17、0;                     this .AddZipEntry(tmpi,u, out u; /向压缩文件流加入内容                       

18、                                                   

19、0;                u.Finish(; / 结束压缩                             u.Close(;   

20、0;                                             /添加压缩项目：p 为需压缩的文件或文件夹； u 为现有的源ZipOutputStre

21、am；  out j为已添加“ZipEntry”的“ZipOutputStream”              public void AddZipEntry(string p,ZipOutputStream u,out ZipOutputStream j                 

22、                string s =ServerDir+p;                   if(Directory.Exists(s /文件夹的处理      

23、60;                                       DirectoryInfo di = new DirectoryInfo(s;     

24、0;                   /*以下内容是修订后添加的*                         if(di.GetDirectories(.Len

25、gth<=0   /没有子目录                                              &

26、#160;                 ZipEntry z = new ZipEntry(p+"""" /末尾“""”用于文件夹的标记                    

27、                  u.PutNextEntry(z;                               

28、;                          /*以上内容是修订后添加的*                      &#

29、160;    foreach(DirectoryInfo tem in di.GetDirectories( /获取子目录                                     &

30、#160;                            ZipEntry z = new ZipEntry(this.ShortDir(tem.FullName+"""" /末尾“""”用于文件夹的标记     

31、;                                 u.PutNextEntry(z;    /此句不可少，否则空目录不会被添加         

32、;                             s = this.ShortDir(tem.FullName;                

33、60;                    this.AddZipEntry(s,u,out u;       /递归                  &#

34、160;                                     foreach(FileInfo temp in di.GetFiles(  /获取此目录的文件   

35、60;                                                  &#

36、160;           s = this.ShortDir(temp.FullName;                                  

37、;   this.AddZipEntry(s,u,out u;       /递归                                    

38、60;                                  else if(File.Exists(s /文件的处理           

39、0;                                          u.SetLevel(9;      /压缩等级&#

40、160;                                FileStream f = File.OpenRead(s;             

41、                   byte b = new bytef.Length;                          

42、0;      f.Read(b,0,b.Length;           /将文件流加入缓冲字节中                             

43、   ZipEntry z = new ZipEntry(this.ShortDir(s;                                u.PutNextEntry(z;       

44、;       /为压缩文件流提供一个容器                                u.Write(b,0,b.Length; /写入字节      

45、;                          f.Close(;                        

46、                      j=u;    /返回已添加数据的“ZipOutputStream”                     

47、60;        public void UnZipFile(string p   /解压缩                                  str

48、ing un_tmp = p.Split(new char'*'                   int i2=0;  /防止名称冲突的参数                   f

49、or(int j=0;j                                               if (un_tmpj!="&q

50、uot;                                                   

51、          string un_time=System.DateTime.Now.ToShortDateString(+"-"+System.DateTime.Now.Hour.ToString(+"-"+System.DateTime.Now.Minute.ToString(+"-"+(System.DateTime.Now.Second+i2.ToString(;       

52、;                            string un_dir =ServerDir+"Unzip-"+un_time;               

53、;                    Directory.CreateDirectory(un_dir;      /创建以解压时间为名称的文件夹                   &

54、#160;               ZipInputStream f = new ZipInputStream(File.OpenRead(ServerDir+un_tmpj; /读取压缩文件，并用此文件流新建 “ZipInputStream”对象                  &

55、#160;                A:   ZipEntry zp = f.GetNextEntry(;    /获取解压文件流中的项目。 另注（我的理解）：在压缩包里每个文件都以“ZipEntry”形式存在，其中包括存放文件的目录信息。如果空目录被压缩，该目录下将出现一个名称为空、 大小为 0 、“Crc”属性为 00000000 的“文件”。此文件只是个标记，不会被解压。  

56、                               while(zp!=null                

57、0;                                                  

58、60;     string un_tmp2;                                         if(zp.Name.

59、IndexOf("""">=0 /获取文件的目录信息                                          

60、0;                                               int tmp1 = zp.Na

61、me.LastIndexOf(""""                                           

62、60;      un_tmp2 = zp.Name.Substring(0,tmp1;                                      

63、60;           Directory.CreateDirectory(un_dir+""""+un_tmp2+"""" /必须先创建目录，否则解压失败 - （A） 关系到下面的步骤（B）                  

64、0;                                                  

65、60;            if(!zp.IsDirectory&&zp.Crc!=00000000L /此“ZipEntry”不是“标记文件”                          

66、60;                                                  &#

67、160;               int i =2048;                                &#

68、160;                byte b = new bytei;  /每次缓冲 2048 字节                          

69、                        FileStream s= File.Create(un_dir+""""+zp.Name; /（B-新建文件流              &

70、#160;                                  while(true /持续读取字节，直到一个“ZipEntry”字节读完         

71、                                                   

72、;                                               i = f.Read(b,0,b.Lengt

73、h; /读取“ZipEntry”中的字节                                              

74、0;          if(i>0                                      &

75、#160;                                                  

76、                                     s.Write(b,0,i; /将字节写入新建的文件流         &#

77、160;                                                  &

78、#160;                                                 &

79、#160;    else                                            

80、60;