首先创建一个压缩类
public class ZipHelper
{
/// <summary>
/// 压缩文件
/// </summary>
/// <param name="sourceFilePath"></param>
/// <param name="destinationZipFilePath"></param>
public static void CreateZip(string sourceFilePath, string destinationZipFilePath)
{
if (sourceFilePath[sourceFilePath.Length - 1] != System.IO.Path.DirectorySeparatorChar)
sourceFilePath += System.IO.Path.DirectorySeparatorChar;
ZipOutputStream zipStream = new ZipOutputStream(File.Create(destinationZipFilePath));
zipStream.SetLevel(6); // 压缩级别 0-9
CreateZipFiles(sourceFilePath, zipStream);
zipStream.Finish();
zipStream.Close();
}
/// <summary>
/// 递归压缩文件
/// </summary>
/// <param name="sourceFilePath">待压缩的文件或文件夹路径</param>
/// <param name="zipStream">打包结果的zip文件路径(类似 D:WorkSpacea.zip),全路径包括文件名和.zip扩展名</param>
/// <param name="staticFile"></param>
private static void CreateZipFiles(string sourceFilePath, ZipOutputStream zipStream)
{
Crc32 crc = new Crc32();
string[] filesArray = Directory.GetFileSystemEntries(sourceFilePath);
foreach (string file in filesArray)
{
if (Directory.Exists(file)) //如果当前是文件夹,递归
{
CreateZipFiles(file, zipStream);
}
else //如果是文件,开始压缩
{
FileStream fileStream = File.OpenRead(file);
byte[] buffer = new byte[fileStream.Length];
fileStream.Read(buffer, 0, buffer.Length);
string tempFile = file.Substring(sourceFilePath.LastIndexOf("\") + 1);
ZipEntry entry = new ZipEntry(tempFile);
entry.DateTime = DateTime.Now;
entry.Size = fileStream.Length;
fileStream.Close();
crc.Reset();
crc.Update(buffer);
entry.Crc = crc.Value;
zipStream.PutNextEntry(entry);
zipStream.Write(buffer, 0, buffer.Length);
}
}
}
}
然后在进行调用就可以了
public ActionResult DownAll()
{
var msg = new JsonMessage(false,"下载失败!");
//源文件夹
string path = System.Web.HttpContext.Current.Server.MapPath("/UploadFile/Qrcode");
//压缩目的文件夹,注意末尾要写上压缩的文件的后缀名
string path1 = System.Web.HttpContext.Current.Server.MapPath("/UploadFile/Qrcode.zip");
ZipHelper.CreateZip(@""+path, @"" + path1);
var name = Path.GetFileName(path1);
return File(path1, "application/x-zip-compressed", name);
}