Catch exceptions in ASP. NET MVC and use the Log4net logging component

I. Use of exception handlers

1. Global exception handlers are defined in Filterconfig in ASP.

2. The exception handler, which can be activated in the Web. config file

3. Of course, we can also customize an exception handler, let it inherit Handleerrorattribute, to rewrite the Onexception method

4. The exception handler is defined, then the defined exception handler is registered to the filter

That's it.

Use of two log4net logging components

1. Start by introducing DLL files

2. Writing the configuration file

Configure the Log4net node first in <configuration> under <configSections>

1 <configSections>2 <!--configuration log4net node--3     <section name=" log4net " type="log4net. Config.log4netconfigurationsectionhandler, log4net" />4 </configSections>

View Code

Write a specific configuration

1<log4net>2<!--OFF, FATAL, ERROR, WARN, INFO, DEBUG, all---3<!--Set Root logger level-to-ERROR and its appenders-4<root>5<level value=" All"/>6<appender-ref ref="Sysappender"/>7</root>8<!--Print Only messages of level DEBUG or aboveinchThe Packages--9<logger name="Weblogger">Ten<level value="DEBUG"/> One</logger> A<appender name="Sysappender"Type="log4net. Appender.rollingfileappender,log4net"> <!--output to file-- -<param name="File"Value="app_data/"/> -<param name="Appendtofile"Value="true"/> the<param name="Rollingstyle"Value="Date"/> -<param name="Datepattern"Value="&quot; Logs_&quot;yyyymmdd&quot;. txt&quot;"/> -<param name="Staticlogfilename"Value="false"/> -<layout type="log4net. Layout.patternlayout,log4net"> +<param name="Conversionpattern"Value="%d [%t]%-5p%c-%m%n"/> -<param name="Header"Value="& #xD;& #xA,----------------------header--------------------------& #xD;& #xA;"/> +<param name="Footer"Value="& #xD;& #xA,----------------------footer--------------------------& #xD;& #xA;"/> A</layout> at</appender> -<appender name="ConsoleApp"Type="log4net. Appender.consoleappender,log4net"> <!--output to console-- -<layout type="log4net. Layout.patternlayout,log4net"> -<param name="Conversionpattern"Value="%d [%t]%-5p%c-%m%n"/> -</layout> -</appender> in</log4net>

View Code

This code is also looking for others, should be enough.

3. The configuration file is written, it's time to record the captured exception information.

  protected voidApplication_Start () {log4net.  Config.XmlConfigurator.Configure (); //Read Log4net fileArearegistration.registerallareas ();            Filterconfig.registerglobalfilters (globalfilters.filters);            Routeconfig.registerroutes (routetable.routes);            Bundleconfig.registerbundles (Bundletable.bundles); //Open a thread//Read Exception queue//Exception queue with an exception logged with log4net//no exception thread in exception queue sleep for a whileThreadPool.QueueUserWorkItem (state) = {                //Read exception queue after getting thread                 while(true) {                    if(myexceptionfilter.exqueue.count>0) {Exception ex=MyExceptionFilter.exQueue.Dequeue (); if(Ex! =NULL) {ILog logger= Logmanager.getlogger ("errormsg"); Logger. Error (ex.                        ToString ()); }                        Else{Thread.Sleep ( the); }                    }                      Else{Thread.Sleep ( the);        }                }            }); }

View Code

In the above code

Log4net.                       Config.XmlConfigurator.Configure (); Read Log4net file

ILog logger = Logmanager.getlogger ("errormsg"); ErrorMsg is the name of the log.

Logger. Error (ex.                                                  ToString ()); Record the acquired exception

Get...

Rookie for the first time to write a blog, font these also do not know how much suitable, just the beginning of the code to look at it ...

Catch exceptions in ASP. NET MVC and use the Log4net logging component