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c#-使用log4net在.net5中作为单个文件进行部署会引发配置文件异常

(c# - Deploy as single-file in .net5 with log4net throws exception for config-file)

发布于 2020-11-20 12:02:29

尝试使用log4net作为单个文件部署用.Net 5编写的控制台应用程序。运行已部署的应用程序将引发异常。

重现步骤

  • dotnet新控制台--name TestConsole --language C#(确保.net 5.0)
  • 安装包log4net
  • Program.cs
static void Main(string[] args)
{
log4net.Config.XmlConfigurator.Configure(new FileInfo("log.config"));
var logger = log4net.LogManager.GetLogger("TestLogger");
logger.Info("Hello World!");
}
  • log.config(始终复制)
<?xml version="1.0" encoding="utf-8" ?>
<log4net>
  <logger name="TestLogger">
    <level value="ALL" />
    <appender-ref ref="console" />
  </logger>
  <appender name="console" type="log4net.Appender.ConsoleAppender">
    <layout type="log4net.Layout.PatternLayout">
      <conversionPattern value="%level - %message%newline" />
    </layout>
  </appender>
</log4net>
  • 发布(无单个文件)=有效(运行控制台应用程序时)

dotnet publish -o。\ Publish-自包含true -r win-x64

  • 发布(没有单个文件)=引发异常(运行控制台应用程序时)

dotnet publish -o。\ Publish-自包含true -r win-x64 -p:PublishSingleFile = true

抛出异常:

log4net:ERROR Exception while reading ConfigurationSettings. Check your .config file is well formed XML.
System.Configuration.ConfigurationErrorsException: Configuration system failed to initialize
 ---> System.IO.FileNotFoundException: Cannot find file. (0x80070002)
   at System.Reflection.RuntimeModule.GetFullyQualifiedName()
   at System.Reflection.RuntimeModule.get_Name()
   at System.Configuration.ClientConfigPaths..ctor(String exePath, Boolean includeUserConfig)
   at System.Configuration.ClientConfigPaths.GetPaths(String exePath, Boolean includeUserConfig)
   at System.Configuration.ClientConfigurationHost.get_ConfigPaths()
   at System.Configuration.ClientConfigurationHost.GetStreamName(String configPath)
   at System.Configuration.ClientConfigurationHost.get_IsAppConfigHttp()
   at System.Configuration.Internal.DelegatingConfigHost.get_IsAppConfigHttp()
   at System.Configuration.ClientConfigurationSystem..ctor()
   at System.Configuration.ConfigurationManager.EnsureConfigurationSystem()
   --- End of inner exception stack trace ---
   at System.Configuration.ConfigurationManager.EnsureConfigurationSystem()
   at System.Configuration.ConfigurationManager.PrepareConfigSystem()
   at System.Configuration.ConfigurationManager.GetSection(String sectionName)
   at System.Configuration.ConfigurationManager.get_AppSettings()
   at log4net.Util.SystemInfo.GetAppSetting(String key)
log4net:ERROR Exception while reading ConfigurationSettings. Check your .config file is well formed XML.
System.Configuration.ConfigurationErrorsException: Configuration system failed to initialize
 ---> System.IO.FileNotFoundException: Cannot find file. (0x80070002)
   at System.Reflection.RuntimeModule.GetFullyQualifiedName()
   at System.Reflection.RuntimeModule.get_Name()
   at System.Configuration.ClientConfigPaths..ctor(String exePath, Boolean includeUserConfig)
   at System.Configuration.ClientConfigPaths.GetPaths(String exePath, Boolean includeUserConfig)
   at System.Configuration.ClientConfigurationHost.get_ConfigPaths()
   at System.Configuration.ClientConfigurationHost.GetStreamName(String configPath)
   at System.Configuration.ClientConfigurationHost.get_IsAppConfigHttp()
   at System.Configuration.Internal.DelegatingConfigHost.get_IsAppConfigHttp()
   at System.Configuration.ClientConfigurationSystem..ctor()
   at System.Configuration.ConfigurationManager.EnsureConfigurationSystem()
   --- End of inner exception stack trace ---
   at System.Configuration.ConfigurationManager.PrepareConfigSystem()
   at System.Configuration.ConfigurationManager.GetSection(String sectionName)
   at System.Configuration.ConfigurationManager.get_AppSettings()
   at log4net.Util.SystemInfo.GetAppSetting(String key)

我错过了什么?

Questioner
McClint
Viewed
11
Joshua Hudson 2020-11-28 08:47:25

因此,我认为问题是由于.NET 5的更改引起的。我还假设log4net需要进行更新以使用新的单个文件格式。

这里讨论的是.NET 5如何处理与3.1不同的单个文件。

https://github.com/dotnet/core/issues/5409#issuecomment-715522029

在3.1中,从技术上讲,单个可执行文件已解压缩并从temp运行(如果以我的经验,这可能会导致本地引用文件出现问题,如果这些文件未在项目文件中设置为包含在单个文件之外)。在.NET 5中,他们想转移到程序集在执行到内存时仍位于同一目录中的情况。但是,很明显,这会导致其他问题,就像你在log4net中发现的那样。

上面的链接使我进入了答案:

dotnet publish -r win-x64 /p:PublishSingleFile=true /p:IncludeAllContentForSelfExtract=true

/ p:IncludeAllContentForSelfExtract = true强制.NET 5单个文件的行为与3.1完全相同,这对我有用。

在接下来的几个月中,我将继续尝试,希望log4net .NET 5兼容性开始与新格式兼容。但是至少这个标志让我向前迈进了一步。