利用ICSharpCode.SharpZipLib.dll解析 出错：“Wrong Local header signature: 0xFF8”

分析原因

利用ICSharpCode.SharpZipLib.dll解析APK时，进入APK的AndroidXml获取时出现报错

出错代码

using (ICSharpCode.SharpZipLib.Zip.ZipInputStream zip = new ICSharpCode.SharpZipLib.Zip.ZipInputStream(File.OpenRead(path))) 
{
   
    using (var filestream = new FileStream(path, FileMode.Open, FileAccess.Read)) 
    {
   
        ICSharpCode.SharpZipLib.Zip.ZipFile zipfile = new ICSharpCode.SharpZipLib.Zip.ZipFile(filestream);
        ICSharpCode.SharpZipLib.Zip.ZipEntry item;
        // 出错部分
        while ((item = zip.GetNextEntry()) != null) 
        {
   
            if (item.Name.ToLower() == "androidmanifest.xml") 
            {
   
                manifestData = new byte[50 * 1024];
                using (Stream strm = zipfile.GetInputStream(item)) 
                {
   
                    strm.Read(manifestData, 0, manifestData.Length);
                }
            }
            if (item.Name.ToLower() == "resources.arsc") 
            {
   
                using (Stream strm = zipfile.GetInputStream(item)) 
                {
   
                    using (BinaryReader s = new BinaryReader(strm)) 
                    {
   
                        resourcesData = s.ReadBytes((int)s.BaseStream.Length);
                    }
                }
            }
        }
    }

解决方法

经过查阅资料，解决方法如下

using (ZipInputStream zip = new ZipInputStream(File.OpenRead(path))) 
{
   
    using (var filestream = new FileStream(path, FileMode.Open, FileAccess.Read)) 
    {
   
        System.Text.Encoding.RegisterProvider(System.Text.CodePagesEncodingProvider.Instance);
        ZipFile zipfile = new ZipFile(filestream);
        // 代码更换部分
        foreach (ZipEntry entry in zipfile) 
        {
   
            if (entry != null) 
            {
   
                if (entry.Name.ToLower() == "androidmanifest.xml") 
                {
   
                    manifestData = new byte[50 * 1024];
                    Stream strm = zipfile.GetInputStream(entry);
                    strm.Read(manifestData, 0, manifestData.Length);
                }
                if (entry.Name.ToLower() == "resources.arsc") 
                {
   
                    Stream strm = zipfile.GetInputStream(entry);
                    using (BinaryReader s = new BinaryReader(strm)) 
                    {
   
                        resourcesData = s.ReadBytes((int)entry.Size);
                    }
                }
            }
        }
    }
}

参考链接

Wrong Local header signature: 0xFF8

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