学习微软企业库--日志模块

企业库日志应用程序模块工作原理图:

Logging数据库创建SQL

/****** Object: Database Logging Script Date: 8/22/2005 ******/

USE[master]

GO

IFEXISTS (SELECT name FROM master.dbo.sysdatabases WHERE name = N'Logging')

DROPDATABASE[Logging]

GO

CREATEDATABASE[Logging]

COLLATE SQL_Latin1_General_CP1_CI_AS

GO

exec sp_dboption N'Logging', N'autoclose', N'false'

GO

exec sp_dboption N'Logging', N'bulkcopy', N'false'

GO

exec sp_dboption N'Logging', N'trunc. log', N'false'

GO

exec sp_dboption N'Logging', N'torn page detection', N'true'

GO

exec sp_dboption N'Logging', N'read only', N'false'

GO

exec sp_dboption N'Logging', N'dbo use', N'false'

GO

exec sp_dboption N'Logging', N'single', N'false'

GO

exec sp_dboption N'Logging', N'autoshrink', N'false'

GO

exec sp_dboption N'Logging', N'ANSI null default', N'false'

GO

exec sp_dboption N'Logging', N'recursive triggers', N'false'

GO

exec sp_dboption N'Logging', N'ANSI nulls', N'false'

GO

exec sp_dboption N'Logging', N'concat null yields null', N'false'

GO

exec sp_dboption N'Logging', N'cursor close on commit', N'false'

GO

exec sp_dboption N'Logging', N'default to local cursor', N'false'

GO

exec sp_dboption N'Logging', N'quoted identifier', N'false'

GO

exec sp_dboption N'Logging', N'ANSI warnings', N'false'

GO

exec sp_dboption N'Logging', N'auto create statistics', N'true'

GO

exec sp_dboption N'Logging', N'auto update statistics', N'true'

GO

use[Logging]

GO

SET ANSI_NULLS ON

GO

SET QUOTED_IDENTIFIER ON

GO

IFNOTEXISTS (SELECT*FROM dbo.sysobjects WHERE id =OBJECT_ID(N'[dbo].[Category]') ANDOBJECTPROPERTY(id, N'IsUserTable') =1)

BEGIN

CREATETABLE[dbo].[Category](

[CategoryID][int]IDENTITY(1,1) NOTNULL,

[CategoryName][nvarchar](64) NOTNULL,

CONSTRAINT[PK_Categories]PRIMARYKEYCLUSTERED

(

[CategoryID]ASC

) ON[PRIMARY]

) ON[PRIMARY]

END

GO

SET ANSI_NULLS OFF

GO

SET QUOTED_IDENTIFIER OFF

GO

SET ANSI_NULLS ON

GO

SET QUOTED_IDENTIFIER ON

GO

IFNOTEXISTS (SELECT*FROM dbo.sysobjects WHERE id =OBJECT_ID(N'[dbo].[CategoryLog]') ANDOBJECTPROPERTY(id, N'IsUserTable') =1)

BEGIN

CREATETABLE[dbo].[CategoryLog](

[CategoryLogID][int]IDENTITY(1,1) NOTNULL,

[CategoryID][int]NOTNULL,

[LogID][int]NOTNULL,

CONSTRAINT[PK_CategoryLog]PRIMARYKEYCLUSTERED

(

[CategoryLogID]ASC

) ON[PRIMARY]

) ON[PRIMARY]

END

GO

SET ANSI_NULLS OFF

GO

SET QUOTED_IDENTIFIER OFF

GO

SET ANSI_NULLS ON

GO

SET QUOTED_IDENTIFIER ON

GO

IFNOTEXISTS (SELECT*FROM dbo.sysobjects WHERE id =OBJECT_ID(N'[dbo].[Log]') ANDOBJECTPROPERTY(id, N'IsUserTable') =1)

BEGIN

CREATETABLE[dbo].[Log](

[LogID][int]IDENTITY(1,1) NOTNULL,

[EventID][int]NULL,

[Priority][int]NOTNULL,

[Severity][nvarchar](32) NOTNULL,

[Title][nvarchar](256) NOTNULL,

[Timestamp][datetime]NOTNULL,

[MachineName][nvarchar](32) NOTNULL,

[AppDomainName][nvarchar](512) NOTNULL,

[ProcessID][nvarchar](256) NOTNULL,

[ProcessName][nvarchar](512) NOTNULL,

[ThreadName][nvarchar](512) NULL,

[Win32ThreadId][nvarchar](128) NULL,

[Message][nvarchar](1500) NULL,

[FormattedMessage][ntext]NULL,

CONSTRAINT[PK_Log]PRIMARYKEYCLUSTERED

(

[LogID]ASC

) ON[PRIMARY]

) ON[PRIMARY] TEXTIMAGE_ON [PRIMARY]

END

GO

SET ANSI_NULLS OFF

GO

SET QUOTED_IDENTIFIER OFF

GO

SET ANSI_NULLS ON

GO

SET QUOTED_IDENTIFIER ON

GO

IFNOTEXISTS (SELECT*FROM sysobjects WHERE id =OBJECT_ID(N'[dbo].[InsertCategoryLog]') AND type in (N'P', N'PC'))

BEGIN

EXEC dbo.sp_executesql @statement= N'CREATE PROCEDURE InsertCategoryLog

@CategoryID INT,

@LogID INT

AS

BEGIN

SET NOCOUNT ON;

DECLARE @CatLogID INT

SELECT @CatLogID FROM CategoryLog WHERE CategoryID=@CategoryID and LogID = @LogID

IF @CatLogID IS NULL

BEGIN

INSERT INTO CategoryLog (CategoryID, LogID) VALUES(@CategoryID, @LogID)

RETURN @@IDENTITY

END

ELSE RETURN @CatLogID

END

'

END

GO

SET ANSI_NULLS OFF

GO

SET QUOTED_IDENTIFIER OFF

GO

SET ANSI_NULLS ON

GO

SET QUOTED_IDENTIFIER ON

GO

IFNOTEXISTS (SELECT*FROM sysobjects WHERE id =OBJECT_ID(N'[dbo].[AddCategory]') AND type in (N'P', N'PC'))

BEGIN

EXEC dbo.sp_executesql @statement= N'

CREATE PROCEDURE [dbo].[AddCategory]

-- Add the parameters for the function here

@CategoryName nvarchar(64),

@LogID int

AS

BEGIN

SET NOCOUNT ON;

DECLARE @CatID INT

SELECT @CatID = CategoryID FROM Category WHERE CategoryName = @CategoryName

IF @CatID IS NULL

BEGIN

INSERT INTO Category (CategoryName) VALUES(@CategoryName)

SELECT @CatID = @@IDENTITY

END

EXEC InsertCategoryLog @CatID, @LogID

RETURN @CatID

END

'

END

GO

SET ANSI_NULLS OFF

GO

SET QUOTED_IDENTIFIER OFF

GO

SET ANSI_NULLS ON

GO

SET QUOTED_IDENTIFIER ON

GO

IFNOTEXISTS (SELECT*FROM sysobjects WHERE id =OBJECT_ID(N'[dbo].[ClearLogs]') AND type in (N'P', N'PC'))

BEGIN

EXEC dbo.sp_executesql @statement= N'CREATE PROCEDURE ClearLogs

AS

BEGIN

SET NOCOUNT ON;

DELETE FROM CategoryLog

DELETE FROM [Log]

DELETE FROM Category

END

'

END

GO

SET ANSI_NULLS OFF

GO

SET QUOTED_IDENTIFIER OFF

GO

SET ANSI_NULLS ON

GO

SET QUOTED_IDENTIFIER ON

GO

IFNOTEXISTS (SELECT*FROM sysobjects WHERE id =OBJECT_ID(N'[dbo].[WriteLog]') AND type in (N'P', N'PC'))

BEGIN

EXEC dbo.sp_executesql @statement= N'

/****** Object: Stored Procedure dbo.WriteLog Script Date: 10/1/2004 3:16:36 PM ******/

CREATE PROCEDURE [dbo].[WriteLog]

(

@EventID int,

@Priority int,

@Severity nvarchar(32),

@Title nvarchar(256),

@Timestamp datetime,

@MachineName nvarchar(32),

@AppDomainName nvarchar(512),

@ProcessID nvarchar(256),

@ProcessName nvarchar(512),

@ThreadName nvarchar(512),

@Win32ThreadId nvarchar(128),

@Message nvarchar(1500),

@FormattedMessage ntext,

@LogId int OUTPUT

)

AS

INSERT INTO [Log] (

EventID,

Priority,

Severity,

Title,

[Timestamp],

MachineName,

AppDomainName,

ProcessID,

ProcessName,

ThreadName,

Win32ThreadId,

Message,

FormattedMessage

)

VALUES (

@EventID,

@Priority,

@Severity,

@Title,

@Timestamp,

@MachineName,

@AppDomainName,

@ProcessID,

@ProcessName,

@ThreadName,

@Win32ThreadId,

@Message,

@FormattedMessage)

SET @LogID = @@IDENTITY

RETURN @LogID

'

END

GO

SET ANSI_NULLS OFF

GO

SET QUOTED_IDENTIFIER OFF

GO

IFNOTEXISTS (SELECT*FROM sysobjects WHERE id =OBJECT_ID(N'FK_CategoryLog_Category') AND parent_obj =OBJECT_ID(N'[dbo].[CategoryLog]'))

ALTERTABLE[dbo].[CategoryLog]WITHCHECKADDCONSTRAINT[FK_CategoryLog_Category]FOREIGNKEY( [CategoryID])

REFERENCES[dbo].[Category] ( [CategoryID])

GO

IFNOTEXISTS (SELECT*FROM sysobjects WHERE id =OBJECT_ID(N'FK_CategoryLog_Log') AND parent_obj =OBJECT_ID(N'[dbo].[CategoryLog]'))

ALTERTABLE[dbo].[CategoryLog]WITHCHECKADDCONSTRAINT[FK_CategoryLog_Log]FOREIGNKEY( [LogID])

REFERENCES[dbo].[Log] ( [LogID])

GO

SET QUOTED_IDENTIFIER ON

SET ARITHABORT ON

SET CONCAT_NULL_YIELDS_NULL ON

SET ANSI_NULLS ON

SET ANSI_PADDING ON

SET ANSI_WARNINGS ON

SET NUMERIC_ROUNDABORT OFF

go

DECLARE@bErrorsasbit

BEGINTRANSACTION

SET@bErrors=0

CREATENONCLUSTEREDINDEX[ixCategoryLog]ON[dbo].[CategoryLog] ([LogID]ASC, [CategoryID]ASC )

IF( @@error<>0 ) SET@bErrors=1

IF( @bErrors=0 )

COMMITTRANSACTION

ELSE

ROLLBACKTRANSACTION

2.
点击Logging
Target Listeners 区块右上角的加号按钮, Add Logging Target Listeners然后点击 Add Database Listeners ,属性设置如下:



3. File—Save,保存App.config,无需改动VS中的程序直接再次运行,运行结果如下:



4. 查看Logging数据库,可以看到刚刚写入的日志:

SELECT*FROM[Logging].[dbo].[Category]
GO
SELECT*FROM[Logging].[dbo].[Log]
GO



三. 向XML文件写入日记

1. 创建一个XML文件,我建在上面创建好的工程目录下,命名为test.xml,点击Logging Target Listeners 区块右上角的加号按钮, Add Logging Target Listeners然后点击 Add XML Listeners ,属性设置如下:



2. File—Save,保存App.config,无需改动VS中的程序直接再次运行,运行结果如下:



3. 打开test.xml文件,内容如图所示:



作者：黄聪
出处：http://www.cnblogs.com/huangcong/
本文版权归作者和博客园共有，欢迎转载，但未经作者同意必须保留此段声明，且在文章页面明显位置给出原文连接，否则保留追究法律责任的权利。

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