Using log4j in Spring MVC

1. Dependent Packages
Commons-logging-1.1.3.jar, Log4j-1.2.15.jar
2. Configure Web. xml

1 <Context-param>2     <Param-name>Log4jconfiglocation</Param-name>3     <Param-value>/web-inf/log4j.properties</Param-value>4 </Context-param>5 <Listener>6     <Listener-class>Org.springframework.web.context.ContextLoaderListener</Listener-class>7 </Listener>

3. Configuring the Log4j.properties Properties file

1 ################ FATAL, ERROR, WARN, INFO, DEBUG2 log4j.rootlogger=warn,stdout,d,e3 4 # # # stdout # #5 Log4j.appender.stdout=org.apache.log4j.consoleappender6 Log4j.appender.stdout.target=system.out7 Log4j.appender.stdout.layout=org.apache.log4j.patternlayout8 log4j.appender.stdout.layout.conversionpattern=%d{absolute}%5p%c{1}:%l-%m%n9 Ten # # # logFile # # One # # # Save error to another file # # # A Log4j.appender.d=org.apache.log4j.dailyrollingfileappender - Log4j.appender.d.file=d:/logs/test-error.log - log4j.appender.d.append=true the #error only the This file - Log4j.appender.d.threshold =warn - Log4j.appender.d.layout=org.apache.log4j.patternlayout -Log4j.appender.d.layout.conversionpattern=%-d{yyyy-mm-dd HH:MM:SS} [%t:%r]-[%p]%m%n

4, global exception handling, servlet-config.xml configuration

1 <BeanID= "Exceptionresolver"class= "Org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">2     < Propertyname= "Exceptionmappings">3         <Props>4             <propKey= "Java.lang.Exception">Errors/error</prop>5             <propKey= "Java.lang.Throwable">Errors/err</prop>6         </Props>7     </ Property>8     < Propertyname= "Statuscodes">9         <Props>Ten             <propKey= "Errors/error">500</prop> One             <propKey= "errors/404">404</prop> A         </Props> -     </ Property> -     <!--set the log output level, do not define error log messages such as warnings by default - the     < Propertyname= "Warnlogcategory"value= "WARN"></ Property> -     <!--default error page, use this default configuration when you cannot find the corresponding view for the exception specified in mappings above - -     < Propertyname= "Defaulterrorview"value= "Errors/error"></ Property> -     <!--default HTTP status code - +     < Propertyname= "Defaultstatuscode"value= "$"></ Property> - </Bean> + <!--Global Exception Configuration end -

5. Code Log Write

1 Private Final Log logger = Logfactory.getlog (Simplercontroller.  Class); 2 3 Logger.warn ("logger"); 4 logger.error ("~~info~~");

6. Reference

Spring MVC exception handling and log4j configuration

Using log4j in Spring MVC