使用 Elmah一些要注意的问题

　1.　Elmah使用后，在发布时，要区分IIS6和IIS7 ，IIS6下 HttpModules必须在web.config或App.config 配置文件中使用 system.web注册，而IIS7 必须使用 sysem.webserver.

IIS6:

1   <system.web>

2     <httpModules>

3       <add name="ErrorLog" type="Elmah.ErrorLogModule, Elmah" />

4     </httpModules>

5   </system.web>

IIS7:

1   <system.webServer>

2     <modules>

3       <add name="ErrorLog" type="Elmah.ErrorLogModule, Elmah" />

4     </modules>

5   </system.webServer>

令外介绍下Elmah使用，这个是一款ASP.NET下的系统错误记录管理工具。 下载相应的dll,引用到project. 如果想记录在数据库，必须建立一张错误记录表。web.config配置如下. 

 1 <configSections>

 2 <sectionGroup name="elmah">

 3   <section name="security" requirePermission="false" type="Elmah.SecuritySectionHandler, Elmah"/>

 4   <section name="errorLog" requirePermission="false" type="Elmah.ErrorLogSectionHandler, Elmah"/>

 5   <section name="errorMail" requirePermission="false" type="Elmah.ErrorMailSectionHandler, Elmah"/>

 6   <section name="errorFilter" requirePermission="false" type="Elmah.ErrorFilterSectionHandler, Elmah"/>

 7 </sectionGroup>

 8 </configSections>

 9 

10 <connectionStrings>

11 <add name="strCon" connectionString="Data Source=J18423X;Initial Catalog=UserDB;User ID=sa;Password=1234" providerName="System.Data.SqlClient"/>

12 </connectionStrings>

13 

14 <elmah>

15   <security allowRemoteAccess="0" />

16   <errorLog type="Elmah.SqlErrorLog, Elmah" connectionStringName="strCon" />

17 </elmah>

18 

19 <httpHandlers>

20   <add verb="POST,GET,HEAD" path="elmah.axd" type="Elmah.ErrorLogPageFactory, Elmah"/>

21 </httpHandlers>

22 

//注意httpModules在IIS6和7中需要注意，如问题所述。



23 <httpModules>

24   <add name="ErrorLog" type="Elmah.ErrorLogModule, Elmah"/>

25 </httpModules>

26 

27 <location path="elmah.axd">

28   <system.web>

29   <authorization>

30 <deny users="?"/>

31   </authorization>

32   </system.web>

33 </location>

数据库相关

/* 错误管理工具 SQL代码             */

CREATE TABLE dbo.ELMAH_Error

(

    ErrorId     UNIQUEIDENTIFIER NOT NULL,

    Application NVARCHAR(60) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,

    Host        NVARCHAR(50) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,

    Type        NVARCHAR(100) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,

    Source      NVARCHAR(60) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,

    Message     NVARCHAR(500) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,

    [User]      NVARCHAR(50) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,

    StatusCode INT NOT NULL,

    TimeUtc     DATETIME NOT NULL,

    Sequence    INT IDENTITY (1, 1) NOT NULL,

    AllXml      NTEXT COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL

) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]

GO

//创建主键

ALTER TABLE dbo.ELMAH_Error WITH NOCHECK ADD

    CONSTRAINT PK_ELMAH_Error PRIMARY KEY NONCLUSTERED

    (

        ErrorId

    ) ON [PRIMARY]

GO

//创建默认约束

ALTER TABLE dbo.ELMAH_Error ADD

    CONSTRAINT DF_ELMAH_Error_ErrorId DEFAULT (newid()) FOR [ErrorId]

GO

//创建非聚集索引

CREATE NONCLUSTERED INDEX IX_ELMAH_Error_App_Time_Seq ON dbo.ELMAH_Error

(

    [Application] ASC,

    [TimeUtc] DESC,

    [Sequence] DESC

) ON [PRIMARY]

GO 

SET QUOTED_IDENTIFIER ON

GO

SET ANSI_NULLS ON

GO

  //创建存储过程，得到单个错误xml

CREATE PROCEDURE dbo.ELMAH_GetErrorXml

(

    @Application NVARCHAR(60),

    @ErrorId UNIQUEIDENTIFIER

)

AS

SET NOCOUNT ON

 SELECT

    AllXml

FROM

    ELMAH_Error

WHERE

    ErrorId = @ErrorId

AND

    Application = @Application

GO



SET QUOTED_IDENTIFIER OFF

GO

SET ANSI_NULLS ON

GO

//创建存储过程，得到错误总记录

SET QUOTED_IDENTIFIER ON

GO

SET ANSI_NULLS ON

GO

CREATE PROCEDURE dbo.ELMAH_GetErrorsXml

(

    @Application NVARCHAR(60),

    @PageIndex INT = 0,

    @PageSize INT = 15,

    @TotalCount INT OUTPUT

)

AS

SET NOCOUNT ON

DECLARE @FirstTimeUTC DateTime

DECLARE @FirstSequence int

DECLARE @StartRow int

DECLARE @StartRowIndex int

-- Get the ID of the first error for the requested page

SET @StartRowIndex = @PageIndex * @PageSize + 1

SET ROWCOUNT @StartRowIndex

SELECT 

    @FirstTimeUTC = TimeUTC,

    @FirstSequence = Sequence

FROM

    ELMAH_Error

WHERE  

    Application = @Application

ORDER BY

    TimeUTC DESC,

    Sequence DESC

-- Now set the row count to the requested page size and get

-- all records below it for the pertaining application.

SET ROWCOUNT @PageSize

SELECT

    @TotalCount = COUNT(1)

FROM

    ELMAH_Error

WHERE

    Application = @Application

SELECT

    errorId,

    application,

    host,

    type,

    source,

    message,

    [user],

    statusCode,

    CONVERT(VARCHAR(50), TimeUtc, 126) + 'Z' time

FROM

    ELMAH_Error error

WHERE

    Application = @Application

AND

    TimeUTC <= @FirstTimeUTC

AND

    Sequence <= @FirstSequence

ORDER BY

    TimeUTC DESC,

    Sequence DESC

FOR

    XML AUTO

GO



SET QUOTED_IDENTIFIER OFF



GO



SET ANSI_NULLS ON



GO

//存储过程：插入数据

 

SET QUOTED_IDENTIFIER ON

GO

SET ANSI_NULLS ON

GO

CREATE PROCEDURE dbo.ELMAH_LogError

(

    @ErrorId UNIQUEIDENTIFIER,

    @Application NVARCHAR(60),

    @Host NVARCHAR(30),

    @Type NVARCHAR(100),

    @Source NVARCHAR(60),

    @Message NVARCHAR(500),

    @User NVARCHAR(50),

    @AllXml NTEXT,

    @StatusCode INT,

    @TimeUtc DATETIME

)

AS

SET NOCOUNT ON

INSERT

INTO

    ELMAH_Error

    (

        ErrorId,

        Application,

        Host,

        Type,

        Source,

        Message,

        [User],

        AllXml,

        StatusCode,

        TimeUtc

    )

VALUES

    (

        @ErrorId,

        @Application,

        @Host,

        @Type,

        @Source,

        @Message,

        @User,

        @AllXml,

        @StatusCode,

        @TimeUtc

    )

GO

SET QUOTED_IDENTIFIER OFF

GO

SET ANSI_NULLS ON

GO