应用程序不记录

Question

我有许多使用 log4net 的 ASP.NET 应用程序，没有出现任何问题。我无法让 log4net 记录我使用 MVC 库编写的任何服务中的任何内容。我在所有服务中都有相同的配置（除了日志文件名）。每个服务都以同一用户身份运行并使用相同的应用程序池。

这是我正在使用的配置：

<log4net>
        <appender name="XMLAppender" type="log4net.Appender.RollingFileAppender">
            <file value="C:\logs\SERVICENAME.Log.xml"/>
            <appendToFile value="true"/>
            <rollingStyle value="Composite"/>
            <datePattern value="yyyyMM"/>
            <maxSizeRollBackups value="10"/>
            <maximumFileSize value="100MB"/>
            <layout type="log4net.Layout.XmlLayoutSchemaLog4j">
                <locationInfo value="false"/>
            </layout>
    </appender>
        <root>
            <level value="INFO"/>
            <appender-ref ref="XMLAppender"/>
        </root>
    </log4net>

我总共有 configSection 条目，如下所示：

<configSections>
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net"/>
...
</configSections>

我还打开了 log4net 调试并设置 system.diagnostics 将跟踪写入文件。这是我看到 MVC 和非 MVC 应用程序之间的输出差异的地方。

MVC：

log4net: log4net assembly [log4net, Version=1.2.10.0, Culture=neutral, PublicKeyToken=1b44e1d426115821]. Loaded from [C:\Windows\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\MVCSERVICENAME\25c1b478\883641ac\assembly\dl3\707a9005\e1887c7f_5040ca01\log4net.DLL]. (.NET Runtime [2.0.50727.3074] on Microsoft Windows NT 6.0.6002 Service Pack 2, v.286)
log4net: DefaultRepositorySelector: defaultRepositoryType [log4net.Repository.Hierarchy.Hierarchy]
log4net: DefaultRepositorySelector: Creating repository for assembly [MVCSERVICENAME, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]
log4net: DefaultRepositorySelector: Assembly [MVCSERVICENAME, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null] Loaded From [C:\Windows\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\MVCSERVICENAME\25c1b478\883641ac\assembly\dl3\13a19b30\fdb642f4_937dca01\MVCSERVICENAME.DLL]
log4net: DefaultRepositorySelector: Assembly [MVCSERVICENAME, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null] does not have a RepositoryAttribute specified.
log4net: DefaultRepositorySelector: Assembly [MVCSERVICENAME, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null] using repository [log4net-default-repository] and repository type [log4net.Repository.Hierarchy.Hierarchy]
log4net: DefaultRepositorySelector: Creating repository [log4net-default-repository] using type [log4net.Repository.Hierarchy.Hierarchy]
log4net: Hierarchy: Shutdown called on Hierarchy [log4net-default-repository]

非 MVC（工作）：

log4net log4net assembly [log4net, Version=1.2.10.0, Culture=neutral, PublicKeyToken=1b44e1d426115821]. Loaded from [C:\Windows\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\SERVICENAME\33034378\c825df91\assembly\dl3\fe97001a\e1887c7f_5040ca01\log4net.DLL]. (.NET Runtime [2.0.50727.3074] on Microsoft Windows NT 6.0.6002 Service Pack 2, v.286)
log4net DefaultRepositorySelector: defaultRepositoryType [log4net.Repository.Hierarchy.Hierarchy]
log4net DefaultRepositorySelector: Creating repository for assembly [SERVICENAME, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]
log4net DefaultRepositorySelector: Assembly [SERVICENAME, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null] Loaded From [C:\Windows\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\SERVICENAME\33034378\c825df91\assembly\dl3\827ed068\1a38e2eb_fc7cca01\SERVICENAME.DLL]
log4net DefaultRepositorySelector: Assembly [SERVICENAME, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null] does not have a RepositoryAttribute specified.
log4net DefaultRepositorySelector: Assembly [SERVICENAME, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null] using repository [log4net-default-repository] and repository type [log4net.Repository.Hierarchy.Hierarchy]
log4net DefaultRepositorySelector: Creating repository [log4net-default-repository] using type [log4net.Repository.Hierarchy.Hierarchy]
log4net XmlConfigurator: configuring repository [log4net-default-repository] using .config file section
log4net XmlConfigurator: Application config file is [C:\content\SERVICENAME\web.config]
log4net XmlConfigurator: Configuring Repository [log4net-default-repository]
log4net XmlHierarchyConfigurator: Configuration update mode [Merge].
log4net XmlHierarchyConfigurator: Logger [root] Level string is [INFO].
log4net XmlHierarchyConfigurator: Logger [root] level set to [name="INFO",value=40000].
log4net XmlHierarchyConfigurator: Loading Appender [XMLAppender] type: [log4net.Appender.RollingFileAppender]
log4net XmlHierarchyConfigurator: Setting Property [File] to String value [C:\Windows\Temp\SERVICENAME.Log.xml]
log4net XmlHierarchyConfigurator: Setting Property [AppendToFile] to Boolean value [True]
log4net XmlHierarchyConfigurator: Setting Property [RollingStyle] to RollingMode value [Composite]
log4net XmlHierarchyConfigurator: Setting Property [DatePattern] to String value [yyyyMM]
log4net XmlHierarchyConfigurator: Setting Property [MaxSizeRollBackups] to Int32 value [10]
log4net XmlHierarchyConfigurator: Setting Property [MaximumFileSize] to String value [100MB]
log4net XmlHierarchyConfigurator: Setting Property [LocationInfo] to Boolean value [False]
log4net XmlHierarchyConfigurator: Setting Property [Layout] to object [log4net.Layout.XmlLayoutSchemaLog4j]
log4net RollingFileAppender: Type = [0], r0 = [197001], r1 = [197001]
log4net RollingFileAppender: Type = [1], r0 = [197001], r1 = [197001]
log4net RollingFileAppender: Type = [2], r0 = [197001], r1 = [197001]
log4net RollingFileAppender: Type = [3], r0 = [197001], r1 = [197001]
log4net RollingFileAppender: Type = [4], r0 = [197001], r1 = [197001]
log4net RollingFileAppender: Type = [5], r0 = [197001], r1 = [197002]
log4net RollingFileAppender: Searched for existing files in [C:\Windows\Temp]
log4net RollingFileAppender: curSizeRollBackups starts at [0]
log4net RollingFileAppender: [200912] vs. [200912]
log4net FileAppender: Opening file for writing [C:\Windows\Temp\SERVICENAME.Log.xml] append [True]
log4net XmlHierarchyConfigurator: Created Appender [XMLAppender]
log4net XmlHierarchyConfigurator: Adding appender named [XMLAppender] to logger [root].
log4net XmlHierarchyConfigurator: Hierarchy Threshold []
log4net DefaultRepositorySelector: Creating repository for assembly [SERVICENAME.Core, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]
log4net DefaultRepositorySelector: Assembly [SERVICENAME.Core, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null] Loaded From [C:\Windows\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\SERVICENAME\33034378\c825df91\assembly\dl3\d74dc9d5\8aa6a7e8_fc7cca01\SERVICENAME.Core.DLL]
log4net DefaultRepositorySelector: Assembly [SERVICENAME.Core, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null] does not have a RepositoryAttribute specified.
log4net DefaultRepositorySelector: Assembly [SERVICENAME.Core, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null] using repository [log4net-default-repository] and repository type [log4net.Repository.Hierarchy.Hierarchy]
log4net DefaultRepositorySelector: repository [log4net-default-repository] already exists, using repository type [log4net.Repository.Hierarchy.Hierarchy]

在这两种情况下，我都按如下方式创建 ILog 对象：

private static readonly ILog log = LogManager.GetLogger(typeof(CLASSNAME));

我是否缺少某些内容或需要进行一些更改才能使其适用于 MVC？此时，如果已知可以与 MVC 一起正常工作，我也愿意更改为另一个日志记录解决方案。

谢谢 蒂姆

Answer 1

我知道这篇文章已经很老了，但我也在 WCF 项目中遇到了这个问题（默认 log4net 存储库）。
我将 web.config 与 log4net 部分一起使用（不是单独的 log4net.config 文件）。

为了解决这个问题，我在 AssemblyInfo.cs 中添加了以下内容：

[assembly: log4net.Config.XmlConfigurator(ConfigFile = "Web.config", Watch = true)]

如果使用外部配置文件，情况也是如此。
哈特哈，
夏兰

Answer 2

我的 Web 应用程序是一个 ASP.NET MVC 应用程序，在 Web 根目录中有一个单独的 log4net.config 文件。

经过大量谷歌搜索和胡思乱想后，我通过 Application_Start （在 Global.asax 中）中的代码来初始化 log4net：

protected void Application_Start()
{
    var logConfigFilePath = Server.MapPath("~/log4net.config");

    log4net.Config.XmlConfigurator.ConfigureAndWatch(new System.IO.FileInfo(logConfigFilePath));
}

这解决了我的问题，log4net 开始正确记录。

Answer 3

使用 NLog。似乎有效。我必须将 NLog.config 文件放在基本目录中（与 web.config 一起）并且它工作正常。能够写入正确的目录，这对我来说证明目录权限设置正确。从开始到完成进行更改大约需要 5 分钟。

很高兴知道为什么 log4net 拒绝播放。

Answer 4

查看这些链接以了解如何配置 Log4Net。

http://haacked.com/archive/2006/01/13/SettingUpLog4NetForMultiLayeredApplications。 ASPX
http://haacked.com/archive/2005/03/07/ConfiguringLog4NetForWebApplications。 ASPX

Answer 5

就我而言，这是因为项目属性设置为输出到 bin\debug，但 log4net dll 要求 log4net.config 文件存在于 BIN 文件夹中。我更改了项目属性以输出到 bin 文件夹，然后在构建时将 log4net.config 文件复制到正确的位置。

Answer 6

此外，确保为 log4net 配置文件设置“复制本地”也可以防止许多问题。