之前用过一个用PHP 写的一个可以在服务器端在线解压.ZIP文件的小工具（只有一个文件），但最近，公司项目是用.NET 开发的，服务器上不支持PHP ，所以就自己动手写了个。【源码下载】
解压的核心代码是从网上找的。不知道是哪位大侠写的。小的我就拿来用了。用了ICSharpCode.SharpZipLib.dll类库。
为了让文件的个数减少到最少，所有的后台代码都写到前台aspx页面中了。
- <%@ Page Language="C#" %>
- <%@ Import Namespace="System.Collections.Generic" %>
- <%@ Import Namespace="System.Web" %>
- <%@ Import Namespace="System.Web.UI"%>
- <%@ Import Namespace="System.Web.UI.WebControls" %>
- <%@ Import Namespace="System.IO" %>
- <%@ Import Namespace="System.Threading"%>
- <%@ Import Namespace="ICSharpCode.SharpZipLib.Zip" %>
- <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
- <html xmlns="http://www.w3.org/1999/xhtml">
- <head runat="server">
- <title></title>
- <script runat="server" type="text/C#">
- protected void Page_Load(object sender, EventArgs e)
- {
- if (!IsPostBack)
- {
- string f = Server.MapPath(".");
- foreach (FileInfo fi in new System.IO.DirectoryInfo(f).GetFiles())
- {
- if (fi.Name.LastIndexOf(".zip") > 0)
- {
- ddlFileList.Items.Add(new ListItem(fi.Name, fi.Name));
- }
- }
- ddlFileList.Items.Insert(0, new ListItem("please select", "-1"));
- }
- }
- public void btnDecompress_Click(object s, EventArgs e)
- {
- string zipFilePath = Server.MapPath("./") + ddlFileList.SelectedValue.Trim();//
- if (File.Exists(zipFilePath))
- {
- string TargetPath = txtTargetPath.Text.Trim();
- if (TargetPath.LastIndexOf("\\") < 0)
- {
- TargetPath += "\\\\";
- }
- string targetPath = Server.MapPath(TargetPath);
- FileCompression.Decompress(zipFilePath, targetPath);
- Response.Write("文件解压成功，请在" + TargetPath + "文件夹查看。");
- }
- else
- {
- Response.Write("压缩文件不存在，请先压缩文件。");
- }
- }
- public class FileCompression
- {
- /// <summary>
- /// 构造函数
- /// </summary>
- public FileCompression()
- {
- }
- #region 加密、压缩文件
- /// <summary>
- /// 压缩文件
- /// </summary>
- /// <param name="fileNames">要打包的文件列表</param>
- /// <param name="GzipFileName">目标文件名</param>
- /// <param name="CompressionLevel">压缩品质级别（0~9）</param>
- /// <param name="SleepTimer">休眠时间（单位毫秒）</param>
- public static void Compress(List<FileInfo> fileNames, string GzipFileName, int CompressionLevel, int SleepTimer)
- {
- ZipOutputStream s = new ZipOutputStream(File.Create(GzipFileName));
- try
- {
- s.SetLevel(CompressionLevel); //0 - store only to 9 - means best compression
- foreach (FileInfo file in fileNames)
- {
- FileStream fs = null;
- try
- {
- fs = file.Open(FileMode.Open, FileAccess.ReadWrite);
- }
- catch
- { continue; }
- // 方法二，将文件分批读入缓冲区
- byte data = new byte[2048];
- int size = 2048;
- ZipEntry entry = new ZipEntry(Path.GetFileName(file.Name));
- entry.DateTime = (file.CreationTime > file.LastWriteTime ? file.LastWriteTime : file.CreationTime);
- s.PutNextEntry(entry);
- while (true)
- {
- size = fs.Read(data, 0, size);
- if (size <= 0) break;
- s.Write(data, 0, size);
- }
- fs.Close();
- file.Delete();
- Thread.Sleep(SleepTimer);
- }
- }
- finally
- {
- s.Finish();
- s.Close();
- }
- }
- #endregion
- #region 解密、解压缩文件
- /// <summary>
- /// 解压缩文件
- /// </summary>
- /// <param name="GzipFile">压缩包文件名</param>
- /// <param name="targetPath">解压缩目标路径</param>
- public static void Decompress(string GzipFile, string targetPath)
- {
- //string directoryName = Path.GetDirectoryName(targetPath + "\\") + "\\";
- string directoryName = targetPath;
- if (!Directory.Exists(directoryName)) Directory.CreateDirectory(directoryName);//生成解压目录
- string CurrentDirectory = directoryName;
- byte data = new byte[2048];
- int size = 2048;
- ZipEntry theEntry = null;
- using (ZipInputStream s = new ZipInputStream(File.OpenRead(GzipFile)))
- {
- while ((theEntry = s.GetNextEntry()) != null)
- {
- if (theEntry.IsDirectory)
- {// 该结点是目录
- if (!Directory.Exists(CurrentDirectory + theEntry.Name)) Directory.CreateDirectory(CurrentDirectory + theEntry.Name);
- }
- else
- {
- if (theEntry.Name != String.Empty)
- {
- //解压文件到指定的目录
- using (FileStream streamWriter = File.Create(CurrentDirectory + theEntry.Name))
- {
- while (true)
- {
- ssize = s.Read(data, 0, data.Length);
- if (size <= 0) break;
- streamWriter.Write(data, 0, size);
- }
- streamWriter.Close();
- }
- }
- }
- }
- s.Close();
- }
- }
- #endregion
- }
- </script>
- </head>
- <body>
- <form id="form1" runat="server">
- <div>
- 选择文件<asp:DropDownList ID="ddlFileList" runat="server"></asp:DropDownList><br />
- 目标文件夹：<asp:TextBox ID="txtTargetPath" runat="server"></asp:TextBox><br />
- <asp:Button ID="btnDecompress" runat="server"
- Text="解压缩" onclick="btnDecompress_Click" />
- </div>
- </form>
- </body>
- </html>
