Maven Log Module with simple configuration-surpassing yesterday's series (4)

Surpassing yesterday's series (4)

Building a project using Maven has many advantages. We strongly recommend that you use Maven for initial project construction. The Log Module isProject. Modules are spliced to learn how to build a complete and awesome project.

With this command, a project is automatically created:

 
MVN archetype: Create-dgroupid = com. oreilly-dartifactid = My-app
 

Generate a project directory like this: Recommended: In You can query the dependency of POM. xml on the following website: Http://search.maven.org/ The configuration of POM. XML is as follows:

 <  Project  Xmlns  = "Http://maven.apache.org/POM/4.0.0"  Xmlns: xsi  = "Http://www.w3.org/2001/XMLSchema-instance"  Xsi: schemalocation  = "Http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" >    <  Modelversion  > 4.0.0 </  Modelversion  >    <  Groupid  > Com. KKK. WAP </  Groupid  >    <  Artifactid  > Testapp</  Artifactid  >    <  Version  > 1.0-Snapshot </  Version  >    <  Packaging  > Jar </  Packaging  >    < Name  > Testapp </  Name  >    <  URL  > Http://maven.apache.org </  URL  >    <  Properties  >      <  Project. Build. sourceencoding > UTF-8 </  Project. Build. sourceencoding  >    </  Properties  >    <  Dependencies  >        <  Dependency  >          <  Groupid  > Ch. QoS. logback</  Groupid  >          <  Artifactid  > Logback-classic </  Artifactid  >             <  Version  > 1.0.13 </  Version  >      </ Dependency  >      <  Dependency  >        <  Groupid  > JUnit </  Groupid  >        <  Artifactid  > JUnit </  Artifactid >        <  Version  > 3.8.1 </  Version  >        <  Scope  > Test </  Scope  >      </  Dependency  >    </ Dependencies  >  </  Project  > 

Run the following command in the project root directory:MVN install command

Will download the jar package:

 

Test class:

/**  * Hello world! *  */  Public   Class  APP {  Private   Static Logger logger = loggerfactory. getlogger (App. Class  );  Public   Static   Void  Main (string [] ARGs) {logger. Info ( "App said: Show me the money! "); System. Out. println ( "Hello world! " ); Logger. Info ( "You said: Yo! Yo! " );  Try  {String s = "12 W" ; Integer. parseint (s );}  Catch  (Exception e) {logger. Error ( "You have a big poblem:" + E );}}} 

 

Logback. xml configuration:

 <?  XML version = "1.0" encoding = "UTF-8"  ?>  <! --  Logback configuration.  -->  <  Configuration  Debug = "False"  >      <  Appender  Name  = "Alllog"  Class  = "Ch. QoS. logback. Core. Rolling. rollingfileappender"   >          <  File  > D:/alllog. Log </  File  >          < Encoding  > UTF-8 </  Encoding  >             <  Rollingpolicy  Class  = "Ch. QoS. logback. Core. Rolling. timebasedrollingpolicy"   >                  <  Filenamepattern  > D:/alllog. % d {yyyy-mm-dd}. Log </  Filenamepattern >             </  Rollingpolicy  >             <  Append  > True </  Append  >             <  Layout  Class  = "Ch. QoS. logback. Classic. patternlayout"   >              < Pattern  >   <! [CDATA [  % N %-4r [% d {yyyy-mm-dd hh: mm: SS} % x {productionmode}]-% x {method} % x {requesturiwithquerystring} [IP = % x {remoteaddr}, ref = % x {referrer }, UA = % x {useragent}, SID = % x {cookie. JSESSIONID}] % N %-5 level % logger {35}-% m % N  ]>   </  Pattern  >          </  Layout  >      </  Appender >      <  Root  >          <  Level  Value  = "Info"   />          <  Appender-ref  Ref  = "Alllog"   />      </  Root  > </  Configuration  > 

Explain: Logs are stored on disk D.In the alllog folder, after logging is completed every day, he will change his nameD:/alllog. % d {Yyyy-Mm- Dd}. Log format. Note that the logs being played are inIn alllog. log. About Logback. xmlFor configuration, refer to the blog: Http://blog.csdn.net/haidage/article/details/6794509   Log output result:

 419 [ 2013 - 06 - 07  16 : 02 : 22 ]-[IP =, ref =, UA =, SID = ] Info com. KKK. WAP. app -App said: Show me the money! 434 [ 2013 - 06 - 07   16 : 02 : 22 ]-[IP =, ref =, UA =, SID = ] Info com. KKK. WAP. app -You said: Yo! Yo!435 [ 2013 - 06 - 07   16 : 02 : 22 ]-[IP =, ref =, UA =, SID = ] Error com. KKK. WAP. app -You have a big poblem: Java. Lang. numberformatexception: for Input String : "  12 W  "