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。
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)
{
size = 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>
<%@ 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)
{
size = 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>
然后上打包的程序
如何上传附件啊？
