没有 app.config 的 log4net

Question

我正在尝试使用 adoNetappender 登录到 sql 服务器，它与 app.config 一起工作，但我需要它 whiteout 一个 app.config 这是我的 adoNetappender 测试代码。

[assembly: log4net.Config.XmlConfigurator( Watch = true )]

命名空间 TestAdoNet {

class Program
{
    private static readonly log4net.ILog logger = log4net.LogManager.GetLogger( System.Reflection.MethodBase.GetCurrentMethod().DeclaringType );

    static void Main( string[] args )
    {
        Hierarchy hierarchy = (Hierarchy)LogManager.GetRepository();

        PatternLayout patternLayout = new PatternLayout();
        patternLayout.ConversionPattern = "%date [%thread] %level %logger - %message%newline";
        patternLayout.ActivateOptions();

        AdoNetAppender adoNet = new AdoNetAppender();

        adoNet.BufferSize = 1;
        adoNet.Layout = patternLayout;
        adoNet.ConnectionType = "System.Data.SqlClient.SqlConnection, System.Data, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089";
        adoNet.ConnectionString = "data source=.; initial catalog=test;integrated security=true;";
        adoNet.CommandText = "INSERT INTO Log2 ([Date],[Thread],[Level],[Logger], [Message],[Exception]) VALUES (@log_date, @thread, @log_level, @logger, @message, @exception)";


        AdoNetAppenderParameter logDate = new AdoNetAppenderParameter();

        logDate.ParameterName = "@log_date";
        logDate.DbType = DbType.DateTime;
        logDate.Layout = new RawTimeStampLayout();

        adoNet.AddParameter( logDate );

        RawLayoutConverter rlc = new RawLayoutConverter();

        AdoNetAppenderParameter logThread = new AdoNetAppenderParameter();


        logThread.ParameterName = "@thread";
        logThread.DbType = DbType.String;
        logThread.Size = 255;
        logThread.Layout = (IRawLayout)rlc.ConvertFrom( new PatternLayout( "%thread" ) );

        adoNet.AddParameter( logThread );

        AdoNetAppenderParameter logLevel = new AdoNetAppenderParameter();

        logLevel.ParameterName = "@log_level";
        logLevel.DbType = DbType.String;
        logLevel.Size = 50;
        logLevel.Layout = (IRawLayout)rlc.ConvertFrom( new PatternLayout( "%level" ) );

        adoNet.AddParameter( logLevel );

        AdoNetAppenderParameter logLogger = new AdoNetAppenderParameter();

        logLogger.ParameterName = "@logger";
        logLogger.DbType = DbType.String;
        logLogger.Size = 255;
        logLogger.Layout = (IRawLayout)rlc.ConvertFrom( new PatternLayout( "%logger" ) );

        adoNet.AddParameter( logLogger );

        AdoNetAppenderParameter logMessage = new AdoNetAppenderParameter();

        logMessage.ParameterName = "@message";
        logMessage.DbType = DbType.String;
        logMessage.Size = 4000;
        logMessage.Layout = (IRawLayout)rlc.ConvertFrom( new PatternLayout( "%message" ) );

        adoNet.AddParameter( logMessage );

        AdoNetAppenderParameter logException = new AdoNetAppenderParameter();


        logException.ParameterName = "@exception";
        logException.DbType = DbType.String;
        logException.Size = 2000;
        logException.Layout = (IRawLayout)rlc.ConvertFrom( new ExceptionLayout() );


        adoNet.ActivateOptions();
        hierarchy.Root.AddAppender( adoNet );
        hierarchy.Root.Level = Level.All;
        hierarchy.Configured = true;


        logger.Error( "test" );

    }
}

我对 rolingfileappender 进行了同样的尝试，它起作用了我现在唯一的问题是 sql 服务器。我没有收到任何错误消息，所以我不知道出了什么问题。

Answer 1

谢谢@stuartd 我找到了

错误：ConnectionType = "System.Data.SqlClient.SqlConnection, System.Data, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089;",

右：ConnectionType = "System.Data.SqlClient.SqlConnection, System.Data, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089",

“；”最后是问题 :D

Answer 2

您也可以设置为：ConnectionType = "System.Data.SqlClient.SqlConnection, System.Data".

这样你就不会将自己绑定到依赖项的特定版本。

我发现使用特定的 Version=1.0.3300.0 会不断地创建与数据库的新连接。此类连接保留在 SQL 端的连接池中，不会被类似请求重用 - 预期池中的连接将在同一上下文中重用。我的应用程序会定期关闭，因为连接池已达到其限制并且没有可供应用程序使用的可用连接。

当我删除版本（使用我上面粘贴的代码）时，连接池变得更加稳定，因为连接被重用。

该特定版本背后的原因是什么？我还没有在网上找到任何东西。

没有 app.config 的 log4net

log4net without app.config

c#

log4net

adonetappender