由于公司開(kāi)發(fā)項(xiàng)目需要遷移部署到Linux環(huán)境部署運(yùn)行，之前項(xiàng)目中生成Zip壓縮文件的代碼邏輯在Linux運(yùn)行生成壓縮文件不正常，今天通過(guò)本文給大家分享.Net?生成壓縮文件問(wèn)題記錄，感興趣的朋友一起看看吧

一、起因

　由于公司開(kāi)發(fā)項(xiàng)目需要遷移部署到Linux環(huán)境部署運(yùn)行，之前項(xiàng)目中生成Zip壓縮文件的代碼邏輯在Linux運(yùn)行生成壓縮文件不正常。

　本篇記錄文件排查處理過(guò)程。

二、問(wèn)題現(xiàn)象

壓縮文件生成目錄不正確，文件目錄為：\root\ziptest\upgrade\_dsconnCfg.txt(項(xiàng)目部署目錄)
壓縮文件數(shù)量不正確
壓縮文件最后修改時(shí)間不匹配

　待壓縮文件：

　壓縮結(jié)果：

三、解決過(guò)程：

　1、原始實(shí)現(xiàn)壓縮的主要邏輯：

using System.IO.Compression;
using System.IO;
/// <summary>
/// 文件壓縮類
/// </summary>
public class ZipHelper
{
    /// <summary>
    /// 單文件壓縮成ZIP
    /// </summary>
    /// <param name="fileSource">源文件路徑</param>
    /// <param name="fileOut">ZIP文件路徑</param>
    /// <param name="fileName">ZIP文件名</param>
    /// <returns></returns>
    public static bool SimpleFileZip(string fileSource, string fileOut, string fileName)
    {
        try
        {
            using (FileStream zipFileToOpen = new FileStream(fileOut, FileMode.Create))
            {
                using (ZipArchive archive = new ZipArchive(zipFileToOpen, ZipArchiveMode.Create))
                {
                    ZipFile(fileSource, fileName, archive);
                }
            }
        }
        catch
        {
            return false;
        }
        return true;
    }
    /// <summary>
    /// 多文件壓縮成ZIP
    /// </summary>
    /// <param name="fileSource">源文件路徑</param>
    /// <param name="fileOut">ZIP文件路徑</param>
    /// <param name="fileName">ZIP文件名</param>
    /// <returns></returns>
    public static bool FilesZip(List<string> fileSources, string fileOut)
    {
        try
        {
            using (FileStream zipFileToOpen = new FileStream(fileOut, FileMode.Create))
            {
                using (ZipArchive archive = new ZipArchive(zipFileToOpen, ZipArchiveMode.Create))
                {
                    foreach (var file in fileSources)
                    {　　　　　　　　　　　　　　 //計(jì)算相對(duì)路徑
                        string fileName = file.Replace(AppConsts.ServerUpdateFile + "\\", "");
                        ZipFile(file, fileName, archive);
                    }
                }
            }
        }
        catch
        {
            return false;
        }
        return true;
    }
    private static void ZipFile(string fileSource, string fileName, ZipArchive archive)
    {
        ZipArchiveEntry readMeEntry = archive.CreateEntry(fileName);　　　　　//設(shè)置文件最后修改時(shí)間
        readMeEntry.LastWriteTime = File.GetLastWriteTime(fileSource);
        using (Stream stream = readMeEntry.Open())
        {
            byte[] bytes = File.ReadAllBytes(fileSource);
            stream.Write(bytes, 0, bytes.Length);
        }
    }
}

　2、生成路徑不正確問(wèn)題：通過(guò)對(duì)代碼檢測(cè)發(fā)現(xiàn)，在代碼中處理邏輯對(duì)目錄路徑替換處理時(shí)：使用了"\\"；導(dǎo)致在Linux代碼無(wú)效。修改對(duì)于代碼為以下內(nèi)容：

/// <summary>
/// 多文件壓縮成ZIP
/// </summary>
/// <param name="fileSource">源文件路徑</param>
/// <param name="fileOut">ZIP文件路徑</param>
/// <param name="fileName">ZIP文件名</param>
/// <returns></returns>
public static bool FilesZip(List<string> fileSources, string fileOut)
{
    try
    {
        using (FileStream zipFileToOpen = new FileStream(fileOut, FileMode.OpenOrCreate))
        {
            using (ZipArchive archive = new ZipArchive(zipFileToOpen, ZipArchiveMode.Update))
            {
                foreach (var file in fileSources)
                {　　　　　　　　　　　　//計(jì)算壓縮文件相對(duì)路徑：目錄/文件名
                    string fileName = file.Replace(AppConsts.ServerUpdateFile + Path.DirectorySeparatorChar, "");
                    ZipFile(file, fileName, archive);
                }
            }
        }
    }
    catch (Exception ex)
    {
        Console.WriteLine($"ERROR：{ex}");
        return false;
    }
    return true;
}

　3、排查生成文件數(shù)量異常問(wèn)題，輸出異常信息。

ERROR：Cannot modify entry in Create mode after entry has been opened for writing.
at System.IO.Compression.ZipArchiveEntry.set_LastWriteTime(DateTimeOffset value)
at zlWebPluginsUpgradeServer.Upgrade.ZipHelper.ZipFile(String fileSource, String fileName, ZipArchive archive) in F:\coding\ZlsoftClientService\zlWebPluginsUpgradeServer\UpgradeMode\ZipHelper.cs:line 84
at zlWebPluginsUpgradeServer.Upgrade.ZipHelper.FilesZip(List`1 fileSources, String fileOut) in F:\coding\ZlsoftClientService\zlWebPluginsUpgradeServer\UpgradeMode\ZipHelper.cs:line 62

　　發(fā)現(xiàn)因?yàn)樯蓧嚎s文件后設(shè)置最后修改時(shí)間異常，導(dǎo)致生成壓縮文件數(shù)量不正確；且最后修改時(shí)間不匹配。

　4、根據(jù)日志，調(diào)整

using (ZipArchive archive = new ZipArchive(zipFileToOpen, ZipArchiveMode.Update))

到此以上在Linux中生成壓縮文件問(wèn)題都已解決。

四、總結(jié)：

　1、代碼中路徑操作，不要使用固定字符串；應(yīng)該使用Path類提供的相關(guān)字段、方法操作

　2、設(shè)置壓縮項(xiàng)屬性時(shí)，需要使用Update模式。

最后放上壓縮幫助類：

/// <summary>
/// 文件壓縮類
/// </summary>
public class ZipHelper
{
    /// <summary>
    /// 單文件壓縮成ZIP
    /// </summary>
    /// <param name="fileSource">源文件路徑</param>
    /// <param name="fileOut">ZIP文件路徑</param>
    /// <param name="fileName">ZIP文件名：相對(duì)路徑</param>
    /// <returns></returns>
    public static void SimpleFileZip(string fileSource, string fileOut, string fileName)
    {
        using (FileStream zipFileToOpen = new FileStream(fileOut, FileMode.OpenOrCreate))
        {
            using (ZipArchive archive = new ZipArchive(zipFileToOpen, ZipArchiveMode.Update))
            {
                fileName = fileName.Trim(Path.DirectorySeparatorChar);
                ZipFile(fileSource, fileName, archive);
            }
        }
    }

    /// <summary>
    /// 多文件壓縮成ZIP
    /// </summary>
    /// <param name="fileSource">源文件路徑</param>
    /// <param name="fileOut">ZIP文件路徑</param>
    /// <param name="fileName">ZIP文件名</param>
    /// <returns></returns>
    public static void FilesZip(List<string> fileSources, string fileOut)
    {
        using (FileStream zipFileToOpen = new FileStream(fileOut, FileMode.OpenOrCreate))
        {
            using (ZipArchive archive = new ZipArchive(zipFileToOpen, ZipArchiveMode.Update))
            {
                foreach (var file in fileSources)
                {
                    string fileName = file.Replace(AppConsts.ServerUpdateFile + Path.DirectorySeparatorChar, "");
                    ZipFile(file, fileName, archive);
                }
            }
        }
    }

    /// <summary>
    /// 壓縮指定文件夾
    /// </summary>
    /// <param name="sourceDirectory"></param>
    /// <param name="fileOut"></param>
    public static void DirectoryZip(string sourceDirectory, string fileOut)
    {
        string[] allFiles = Directory.GetFiles(sourceDirectory, "", SearchOption.AllDirectories);
        using (FileStream zipFileToOpen = new FileStream(fileOut, FileMode.OpenOrCreate))
        {
            using (ZipArchive archive = new ZipArchive(zipFileToOpen, ZipArchiveMode.Update))
            {
                foreach (var file in allFiles)
                {
                    //獲取壓縮文件相對(duì)目錄
                    string fileName = file.Replace(sourceDirectory + Path.DirectorySeparatorChar, "");
                    ZipFile(file, fileName, archive);
                }
            }
        }
    }

    /// <summary>
    /// 解壓文件到指定目錄
    /// </summary>
    /// <param name="upZipDirPath"></param>
    /// <param name="zipPath"></param>
    public static void UnZip(string upZipDirPath, string zipPath)
    {
        if (!Directory.Exists(upZipDirPath))
            Directory.CreateDirectory(upZipDirPath);
        using (FileStream zipFileToOpen = new FileStream(zipPath, FileMode.Open))
        {
            using (ZipArchive archive = new ZipArchive(zipFileToOpen, ZipArchiveMode.Read))
            {
                archive.ExtractToDirectory(upZipDirPath);
            }
        }
    }

    /// <summary>
    /// 生成壓縮文件
    /// </summary>
    /// <param name="fileSource">源文件</param>
    /// <param name="fileName">壓縮文件相對(duì)目錄</param>
    /// <param name="archive">壓縮文件包</param>
    private static void ZipFile(string fileSource, string fileName, ZipArchive archive)
    {
        ZipArchiveEntry readMeEntry = archive.CreateEntry(fileName);
        readMeEntry.LastWriteTime = File.GetLastWriteTime(fileSource);
        using (Stream stream = readMeEntry.Open())
        {
            byte[] bytes = File.ReadAllBytes(fileSource);
            stream.Write(bytes, 0, bytes.Length);
        }
    }
}

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