Log4net,ADONetAppender和存储过程:Set Precision&规模?

时间:2014-05-13 16:48:11

标签: c# configuration log4net adonetappender

我假设的一点是小事情正在阻止我的应用程序进行数据库日志记录。

  • Text命令有效。 INSERTEXEC命令都工作,数据输入数据库
  • 如果我取消注释ExecutionTime参数,它就会停止工作。,我知道有人在某个时候工作,但我无法弄清楚为什么取消注释参数,更不用说添加它了,原因Appender无声地失败。
    • 现在调试正在运行时发现错误。下面列出并更新了Precision和Scale。
  • 我试图启用内部调试,但似乎并不想工作。发现问题。将配置部分移动到正确的位置(不在log4net下)。
  • 如果我将commandType切换到StoredProcedure它会停止工作,即使文本版本正常工作
    • 还是个问题。尝试不同的东西,但没有多少运气

SQL:

DROP TABLE [LOG];
GO
CREATE TABLE [dbo].[LOG] (
     [Id] [int] IDENTITY(1,1) NOT NULL
    ,[Origin] [varchar](55) null
    ,[LogDate] [datetime] NOT NULL
    ,[Thread] [varchar](32) NOT NULL
    ,[Context] [varchar](10) NOT NULL
    ,[Level] [varchar](10) NOT NULL
    ,[Logger] [varchar](255) NOT NULL
    ,[Message] [varchar](4000) Not NULL
    ,[MethodName] [varchar](200) NULL
    ,[Parameters] [varchar](4000) NULL
    ,[Exception] [varchar](4000) NULL
    ,[ExecutionTime] [decimal](14, 4) NULL
)
GO

DROP PROCEDURE InsertLog
GO
CREATE PROCEDURE [dbo].[InsertLog]
     @LogDate DateTime
    ,@Thread varchar(32)
    ,@Context varchar(10)
    ,@Level varchar(10)
    ,@Logger varchar(255)
    ,@Message varchar(4000)
    ,@MethodName varchar(200) = null
    ,@Parameters varchar(4000) = null
    ,@Exception varchar(4000) = null
    ,@ExecutionTime decimal(14,4) = null
AS
BEGIN
    SET NOCOUNT ON;

    INSERT INTO [dbo].[LOG] ([Origin],[LogDate],[Thread],[Level],[Logger],[Message],[MethodName],[Parameters],[Exception],[Context]) 
    VALUES ('InsertLog',@LogDate, @Thread, @Level, @Logger, @Message, @MethodName, @Parameters, @Exception, @Context)
END
GO

的App.config

<?xml version="1.0" encoding="utf-8"?>
<configuration>
    <configSections>
        <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />
        ...
    </configSections>
    <connectionStrings>...</connectionStrings>
    <applicationSettings>...</applicationSettings>
    <log4net configSource="Log4Net.config" />
<appSettings>
    <add key="log4net.Internal.Debug" value="true" />
</appSettings>
<system.diagnostics>
    <trace autoflush="true">
        <listeners>
            <add name="textWriterTraceListener" type="System.Diagnostics.TextWriterTraceListener" initializeData=".\log4net.log" />
        </listeners>
    </trace>
</system.diagnostics>
</configuration>

log4net.config

<?xml version="1.0" encoding="utf-8" ?>
<log4net>
    <root>
        <level value="ALL" />
        <!-- ColoredConsoleAppender works, so It's not listed below -->
        <appender-ref ref="ColoredConsoleAppender"/>
        <appender-ref ref="ADONetAppender" />
        <appender-ref ref="OutputDebugStringAppender" />
        <appender-ref ref="TraceAppender" />
    </root>
    <appender name="ADONetAppender" type="log4net.Appender.ADONetAppender">
        <threshold value="ALL"/>
        <bufferSize value="1" />
        <lossy value="false"/>
        <param name="UseTransactions" value="False" />
        <connectionType value="System.Data.SqlClient.SqlConnection, System.Data, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
        <connectionString value="..." />
        <!--<commandText value="
            INSERT INTO [Log] ([Origin],[LogDate],[Thread],[Context],[Level],[Logger],[Message],[MethodName],[Parameters],[Exception])
            VALUES ('ADONetAppender',@log_date,@thread,@Context,@Level,@Logger,@Message,@MethodName,@Parameters,@Exception);"
        />-->
        <commandText value="
            exec InsertLog @log_date,@thread,@Context,@Level,@Logger,@Message,@MethodName,@Parameters,@Exception;"
        />
        <!--<commandType value="StoredProcedure" />-->
        <!--<commandText value="InsertLog" />-->
        <parameter name="LogDate">
            <parameterName value="@log_date"/>
            <dbType value="DateTime"/>
            <layout type="log4net.Layout.RawTimeStampLayout"/>
        </parameter>
                    ...
        <!-- This causes appender to fail silently. -->
        <parameter name="ExecutionTime">
            <parameterName value="@ExecutionTime"/>
            <dbType value="Decimal"/>
            <precision value="14"/>
            <scale value="4"/>
            <layout type="log4net.Layout.PatternLayout" value="%property{execution_time}" />
        </parameter>
    </appender>
    <appender name="OutputDebugStringAppender" type="log4net.Appender.OutputDebugStringAppender">
        <layout type="log4net.Layout.PatternLayout">
            <conversionPattern value="%date %-5level %logger (%file:%line) - %message%newline" />
        </layout>
    </appender>
    <appender name="TraceAppender" type="log4net.Appender.TraceAppender">
        <layout type="log4net.Layout.PatternLayout">
            <conversionPattern value="%date %-5level - %message%newline" />
        </layout>
    </appender>
</log4net>

更新1 现在我有Trace的东西正在工作......它抱怨DB命令需要明确设置精度和比例。不知道怎么做,因为我见过的所有例子都没有设置

  

log4net:错误[AdoNetAppender] ErrorCode:GenericFailure。不能   prepare database命令[exec InsertLog   @ LOG_DATE,@螺纹,@上下文,@等级,@记录器,@消息,@方法名,@参数,@异常;   ] System.InvalidOperationException:SqlCommand.Prepare方法需要   类型的参数&#39;十进制&#39;有一个明确设置精度和   规模。在System.Data.SqlClient.SqlParameter.Prepare(SqlCommand   cmd)在System.Data.SqlClient.SqlCommand.Prepare()at   log4net.Appender.AdoNetAppender.InitializeDatabaseCommand()

更新2 随着Precision / Scale的增加,错误会发生变化。它现在抱怨:

  

log4net:错误[AdoNetAppender] ErrorCode:GenericFailure。 DoAppend失败   System.FormatException:无法将参数值从String转换为Decimal。 ---&GT;      System.FormatException:输入字符串的格式不正确。

2 个答案:

答案 0 :(得分:3)

有两个参数属于AdoNetAppenderParameter类,可以添加到xml文件ExecutionTimePrecision中的Scale参数中:

<parameter name="ExecutionTime">
    <parameterName value="@ExecutionTime"/>
    <dbType value="Decimal"/>
    <precision value="14"/>
    <scale value="4"/>
    <layout type="log4net.Layout.PatternLayout" value="%property{execution_time}" />
</parameter>

答案 1 :(得分:1)

  • 启用调试程序并找到有关精度和比例的投诉
  • 接下来是NULL值。它们被转换为文字(null),并且在将其翻译成小数时会窒息。
  • 将Log4net.config转换为STRING,并将一些转换逻辑添加到存储过程
  • 将ExecutionTime转换为Int,因为我使用的代码是以毫秒为单位。

<强> SQL:

    DROP TABLE [LOG];
    GO
    CREATE TABLE [dbo].[LOG] (
         [Id] [int] IDENTITY(1,1) NOT NULL
        ,[LogDate] [datetime] NOT NULL
        ,[Thread] [varchar](32) NOT NULL
        ,[Level] [varchar](10) NOT NULL
        ,[Logger] [varchar](255) NOT NULL
        ,[Message] [varchar](4000) NOT NULL
        ,[Exception] [varchar](4000) NULL
        ,[Context] [varchar](10) NULL
        ,[MethodName] [varchar](200) NULL
        ,[Parameters] [varchar](4000) NULL
        ,[ExecutionTime] int NULL
        --,[Origin] [varchar](55) NOT NULL
        --,[ExecutionRaw] [varchar](4000) NULL
    )
    GO

    DROP PROCEDURE InsertLog
    GO
    CREATE PROCEDURE [dbo].[InsertLog]
         @LogDate DateTime
        ,@Thread varchar(32)
        ,@Level varchar(10)
        ,@Logger varchar(255)
        ,@Message varchar(4000)
        ,@Exception varchar(4000) = null
        ,@Context varchar(10) = null
        ,@MethodName varchar(200) = null
        ,@Parameters varchar(4000) = null
        ,@ExecutionTime varchar(32) = null
    AS
    BEGIN
        SET NOCOUNT ON;
        --DECLARE @ETChar varchar(32); set @ETChar = @ExecutionTime;

        if @Exception     = '' set @Exception = null;
        if @Context       = '(null)' set @Context = null;
        if @MethodName    = '(null)' set @MethodName = null;
        if @Parameters    = '(null)' set @Parameters = null;        
        if @ExecutionTime = '(null)' set @ExecutionTime = null;

        DECLARE @ETInt int;          set @ETInt  = convert(int, @ExecutionTime);

        INSERT INTO [dbo].[LOG] (
             [LogDate]
            ,[Thread]
            ,[Level]
            ,[Logger]
            ,[Message]
            ,[Exception]
            ,[Context]
            ,[MethodName]
            ,[Parameters]
            ,[ExecutionTime]
            --,[Origin]
            --,[ExecutionRaw]
            )
        VALUES (
             @LogDate
            ,@Thread
            ,@Level
            ,@Logger
            ,@Message
            ,@Exception
            ,@Context
            ,@MethodName
            ,@Parameters
            ,@ETInt
            --,'InsertLog'
            --,@ETChar
            )

        SET NOCOUNT OFF;
    END
    GO

    DROP INDEX [IX_LEVEL] ON [LOG]
    GO
    CREATE NONCLUSTERED INDEX [IX_Level] ON [dbo].[LOG] ( [Level] ASC ); 
    GO

<强> Log4Net.config:

<?xml version="1.0" encoding="utf-8"?>

<log4net>
  <root>
    <level value="DEBUG" />
    <appender-ref ref="ADONetAppender" />
  </root>
  <appender name="ADONetAppender" type="log4net.Appender.ADONetAppender">
    <threshold value="ALL" />
    <bufferSize value="1" />
    <lossy value="false" />
    <param name="UseTransactions" value="False" />
    <connectionType value="System.Data.SqlClient.SqlConnection, System.Data, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
    <connectionString value="..." />
    <commandType value="StoredProcedure" />
    <commandText value="InsertLog" />
    <parameter name="LogDate">
      <parameterName value="@LogDate" />
      <dbType value="DateTime" />
      <layout type="log4net.Layout.RawTimeStampLayout" />
    </parameter>
    <parameter name="Thread">
      <parameterName value="@Thread" />
      <dbType value="String" />
      <size value="32" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%thread" />
      </layout>
    </parameter>
    <parameter name="Level">
      <parameterName value="@Level" />
      <dbType value="String" />
      <size value="10" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%level" />
      </layout>
    </parameter>
    <parameter name="Logger">
      <parameterName value="@Logger" />
      <dbType value="String" />
      <size value="255" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%logger" />
      </layout>
    </parameter>
    <parameter name="Message">
      <parameterName value="@Message" />
      <dbType value="String" />
      <size value="4000" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%message" />
      </layout>
    </parameter>
    <parameter name="Exception">
      <parameterName value="@Exception" />
      <dbType value="String" />
      <size value="4000" />
      <layout type="log4net.Layout.ExceptionLayout" />
    </parameter>
    <parameter name="Context">
      <parameterName value="@Context" />
      <dbType value="String" />
      <size value="10" />
      <layout type="log4net.Layout.PatternLayout" value="%x" />
    </parameter>
    <parameter name="MethodName">
      <parameterName value="@MethodName" />
      <dbType value="String" />
      <size value="200" />
      <layout type="log4net.Layout.PatternLayout" value="%property{method_name}" />
    </parameter>
    <parameter name="Parameters">
      <parameterName value="@Parameters" />
      <dbType value="String" />
      <size value="4000" />
      <layout type="log4net.Layout.PatternLayout" value="%property{properties}" />
    </parameter>
    <parameter name="ExecutionTime">
      <parameterName value="@ExecutionTime" />
      <dbType value="String" />
      <size value="32" />
      <layout type="log4net.Layout.PatternLayout" value="%property{execution_time}" />
    </parameter>
  </appender>
</log4net>