我在使用ICSharpCode.SharpZipLib进行目录压缩后，再解压缩是提示这个错误
我在使用ICSharpCode.SharpZipLib进行目录压缩后，再解压缩是提示这个错误：
Size mismatch: 4294967295;126976 <-> 70202;126976
是在执行这句时： size = s.Read(data, 0, data.Length);//读入一个压缩块
报的错误。
我的源代码如下
//压缩
///
/// 递归压缩文件夹方法
private static bool ZipFileDictory(string FolderToZip, ZipOutputStream s, string ParentFolderName)
{
bool res = true;
string[] folders, filenames;
ZipEntry entry = null;
FileStream fs = null;
Crc32 crc = new Crc32();
try
{//创建当前文件夹
entry = new ZipEntry(Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip) + "/")); //加上 “/” 才会当成是文件夹创建
s.PutNextEntry(entry);
s.Flush();
//先压缩文件，再递归压缩文件夹
filenames = Directory.GetFiles(FolderToZip);
foreach (string file in filenames)
{
//打开压缩文件
fs = File.OpenRead(file);
byte[] buffer = new byte[fs.Length];
fs.Read(buffer, 0, buffer.Length);
entry = new ZipEntry(Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip) + "/" + Path.GetFileName(file)));
entry.DateTime = DateTime.Now;
entry.Size = fs.Length;
fs.Close();
crc.Reset();
crc.Update(buffer);
entry.Crc = crc.Value;
s.PutNextEntry(entry);
s.Write(buffer, 0, buffer.Length);
}
}
catch
{
res = false;
}
finally
{
if (fs != null)
{
fs.Close();
fs = null;
}
if (entry != null)
{
entry = null;
}
GC.Collect();
GC.Collect(1);
}
folders = Directory.GetDirectories(FolderToZip);
foreach (string folder in folders)
{
if (!ZipFileDictory(folder, s, Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip))))
{
return false;
}
}
return res;
}
///
/// 压缩目录
///
/// 待压缩的文件夹，全路径格式
/// 压缩后的文件名，全路径格式
///
private static bool ZipFileDictory(string FolderToZip, string ZipedFile, String Password)
{
bool res;
if (!Directory.Exists(FolderToZip))
{
return false;
}
ZipOutputStream s = new ZipOutputStream(File.Create(ZipedFile));
s.SetLevel(9);
s.Password = Password;
res = ZipFileDictory(FolderToZip, s, "");
s.Finish();
s.Close();
return res;
}
///
/// 压缩文件
///
/// 要进行压缩的文件名
/// 压缩后生成的压缩文件名
///
private static bool ZipFile(string FileToZip, string ZipedFile, String Password)
{
//如果文件没有找到，则报错
if (!File.Exists(FileToZip))
{
throw new System.IO.FileNotFoundException("指定要压缩的文件: " + FileToZip + " 不存在!");
}
//FileStream fs = null;
FileStream ZipFile = null;
ZipOutputStream ZipStream = null;
ZipEntry ZipEntry = null;
bool res = true;
try
{
ZipFile = File.OpenRead(FileToZip);
byte[] buffer = new byte[ZipFile.Length];
ZipFile.Read(buffer, 0, buffer.Length);
ZipFile.Close();
ZipFile = File.Create(ZipedFile);
ZipStream = new ZipOutputStream(ZipFile);
ZipStream.Password = Password;
ZipEntry = new ZipEntry(Path.GetFileName(FileToZip));
ZipStream.PutNextEntry(ZipEntry);
ZipStream.SetLevel(6);
ZipStream.Write(buffer, 0, buffer.Length);
}
catch
{
res = false;
}
finally
{
if (ZipEntry != null)
{
ZipEntry = null;
}
if (ZipStream != null)
{
ZipStream.Finish();
ZipStream.Close();
}
if (ZipFile != null)
{
ZipFile.Close();
ZipFile = null;
}
GC.Collect();
GC.Collect(1);
}
return res;
}
///
/// 压缩文件 和 文件夹
///
/// 待压缩的文件或文件夹，全路径格式
/// 压缩后生成的压缩文件名，全路径格式
///
public bool Zip(String FileToZip, String ZipedFile, String Password)
{
if (Directory.Exists(FileToZip))
{
return ZipFileDictory(FileToZip, ZipedFile, Password);
}
else if (File.Exists(FileToZip))
{
return ZipFile(FileToZip, ZipedFile, Password);
}
else
{
return false;
}
}
[解决办法]
using System;using System.Collections.Generic;using System.Text;using ZipHelper.ZipLib.Zip;using System.IO;using System.Diagnostics;using ZipHelper.ZipLib.Checksums;namespace ZipHelper.ZipLib{ public class CreateZipHelper { private static void GetDir(string sourcePath, List<string> filenames) { try { filenames.AddRange(Directory.GetFiles(sourcePath)); DirectoryInfo dir = new DirectoryInfo(sourcePath); foreach (DirectoryInfo d in dir.GetDirectories()) { GetDir(d.FullName, filenames); } } catch (Exception ex) { throw ex; } } /// <summary> /// Create File. /// </summary> /// <param name="zipFile">the destfile.</param> /// <param name="filePath">the souce files Path.</param> public static void CreateZipFile(string zipName, string souceFilesPath) { try { if (!Directory.Exists(souceFilesPath)) { Debug.WriteLine("Cannot find directory '{0}'", souceFilesPath); return; } // Depending on the directory this could be very large and would require more attention // in a commercial package. //string[] filenames = Directory.GetFiles(souceFilesPath); List<string> filenames = new List<string>(); GetDir(souceFilesPath, filenames); // 'using' statements gaurantee the stream is closed properly which is a big source // of problems otherwise. Its exception safe as well which is great. using (ZipOutputStream s = new ZipOutputStream(File.Create(zipName))) { s.SetLevel(9); // 0 - store only to 9 - means best compression byte[] buffer = new byte[4096]; foreach (string file in filenames) { // Using GetFileName makes the result compatible with XP // as the resulting path is not absolute. string filename = file; if (filename.StartsWith("\\")) { filename = filename.Substring(1); } ZipEntry entry = new ZipEntry(filename); // Setup the entry data as required. // Crc and size are handled by the library for seakable streams // so no need to do them here. // Could also use the last write time or similar for the file. entry.DateTime = DateTime.Now; s.PutNextEntry(entry); using (FileStream fs = File.OpenRead(file)) { // Using a fixed size buffer here makes no noticeable difference for output // but keeps a lid on memory usage. int sourceBytes; do { sourceBytes = fs.Read(buffer, 0, buffer.Length); s.Write(buffer, 0, sourceBytes); } while (sourceBytes > 0); } } // Finish/Close arent needed strictly as the using statement does this automatically // Finish is important to ensure trailing information for a Zip file is appended. Without this // the created file would be invalid. s.Finish(); // Close is important to wrap things up and unlock the file. s.Close(); } } catch (Exception ex) { Console.WriteLine("Exception during processing {0}", ex); // No need to rethrow the exception as for our purposes its handled. } }}}
[解决办法]
如果有源码的话可以这样做：
在项目所引用库“ICSharpCode.SharpZipLib.dll”的ICSharpCode.SharpZipLib.Zip.Compression. ZipInputStream.cs类中找到抛出异常的代码段：
int BodyRead(byte[] buffer, int offset, int count)
{
...
if ((flags & 8) == 0 && (inf.TotalIn != csize || inf.TotalOut != size)) {
throw new ZipException("Size mismatch: " + csize + ";" + size + " <-> " + inf.TotalIn + ";" + inf.TotalOut);
}
...
return count;
}
将
if ((flags & 8) == 0 && (inf.TotalIn != csize || inf.TotalOut != size)) {
throw new ZipException("Size mismatch: " + csize + ";" + size + " <-> " + inf.TotalIn + ";" + inf.TotalOut);
}
注释掉即可，解压和压缩一切都正常。