使用ICSharpCode.SharpZipLib的受密码解压缩的zip文件的问题 [英] problem with unzip password protected zip files using ICSharpCode.SharpZipLib

问题描述

嗨 我正在使用ICSharpCode.SharpZipLib实用工具来解压缩受密码保护的zip文件.
我正在使用一个循环，尝试输入给定的几个密码，直到其中一个打开文件而无需经历键入它们的过程.
但是我遇到了一个问题.如果程序尝试输入的第一个密码错误，则将提取压缩文件中的文件，但文件的容量为零.
并且我们遇到了访问被拒绝错误，这使得程序无法继续检查其他密码.
我该如何解决这个问题?
我感谢您的帮助.
这是解压缩方法:

public static void UnZipFiles(string zipPathAndFile, string outputFolder, string password, bool deleteZipFile)
        {
            ZipInputStream s = new ZipInputStream(File.OpenRead(zipPathAndFile));
            if (password != null && password != String.Empty)
                s.Password = password;
                
            ZipEntry theEntry;
            string tmpEntry = String.Empty;
            while ((theEntry = s.GetNextEntry()) != null)
            {
                string directoryName = outputFolder;
                string fileName = Path.GetFileName(theEntry.Name);
                // create directory 
                if (directoryName != "")
                {
                    Directory.CreateDirectory(directoryName);
                }
                if (fileName != String.Empty)
                {
                    if (theEntry.Name.IndexOf(".ini") < 0)
                    {
                        string fullPath = directoryName + "\\" + theEntry.Name;
                        fullPath = fullPath.Replace("\\ ", "\\");
                        string fullDirPath = Path.GetDirectoryName(fullPath);
                        if (!Directory.Exists(fullDirPath)) Directory.CreateDirectory(fullDirPath);
                        FileStream streamWriter = File.Create(fullPath);
                        int size = 2048;
                        byte[] data = new byte[2048];
                        while (true)
                        {
                            size = s.Read(data, 0, data.Length);
                            if (size > 0)
                            {
                                streamWriter.Write(data, 0, size);
                            }
                            else
                            {
                                break;
                            }
                        }
                        streamWriter.Close();
                    }
                }
            }
            s.Close();
            if (deleteZipFile)
                File.Delete(zipPathAndFile);
        }
    }

解决方案

您是否在尝试解压缩zip文件之前检查密码是否有效?

尝试在代码周围放置try/catch块，以查看失败的地方.

是的，我做到了
密码不匹配的异常会发生.

最后，我决定使用Codeplex中的dotNetZip组件

hi i am using ICSharpCode.SharpZipLib utility for unziping password protected zip files.
i''m using a loop which tries a couple of passwords given till one of them opens the files without going through the process of typing them.
but i have faced a problem. if the first password the program tries is wrong then the files in the zipped file are extracted but the files have a zero capacity.
and we face the access denied error which makes the continuation of the program to check other passwords impossible.
how can i deal with this problem?
i appreciate your help.
here is the unzip method:

public static void UnZipFiles(string zipPathAndFile, string outputFolder, string password, bool deleteZipFile)
        {
            ZipInputStream s = new ZipInputStream(File.OpenRead(zipPathAndFile));
            if (password != null && password != String.Empty)
                s.Password = password;
                
            ZipEntry theEntry;
            string tmpEntry = String.Empty;
            while ((theEntry = s.GetNextEntry()) != null)
            {
                string directoryName = outputFolder;
                string fileName = Path.GetFileName(theEntry.Name);
                // create directory 
                if (directoryName != "")
                {
                    Directory.CreateDirectory(directoryName);
                }
                if (fileName != String.Empty)
                {
                    if (theEntry.Name.IndexOf(".ini") < 0)
                    {
                        string fullPath = directoryName + "\\" + theEntry.Name;
                        fullPath = fullPath.Replace("\\ ", "\\");
                        string fullDirPath = Path.GetDirectoryName(fullPath);
                        if (!Directory.Exists(fullDirPath)) Directory.CreateDirectory(fullDirPath);
                        FileStream streamWriter = File.Create(fullPath);
                        int size = 2048;
                        byte[] data = new byte[2048];
                        while (true)
                        {
                            size = s.Read(data, 0, data.Length);
                            if (size > 0)
                            {
                                streamWriter.Write(data, 0, size);
                            }
                            else
                            {
                                break;
                            }
                        }
                        streamWriter.Close();
                    }
                }
            }
            s.Close();
            if (deleteZipFile)
                File.Delete(zipPathAndFile);
        }
    }

解决方案

Are you checking to make sure the password is valid before trying to uncompress the zip file?

Try putting a try/catch block around the code to see where it''s failing.

yes i did
the password did not match exception will occur.

finally i decide to use dotNetZip component from codeplex

这篇关于使用ICSharpCode.SharpZipLib的受密码解压缩的zip文件的问题的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！