java - How do I use log4j with Maven and executable jar file? -


i'm trying log4j working in simple application i'm getting message: 

exception in thread "main" java.lang.noclassdeffounderror: org/apache/log4j/logger

i execute application command: 

java -jar lunchtracker-1.0-snapshot.jar

the log4j.properties file in src/main/resources. here pom.xml:

<project <snip -- messing formatting>>     <modelversion>4.0.0</modelversion>     <groupid>net.uofitorn</groupid>     <artifactid>lunchtracker</artifactid>     <packaging>jar</packaging>     <version>1.0-snapshot</version>     <name>lunchtracker</name>     <url>http://maven.apache.org</url>     <build>         <plugins>             <plugin>                 <groupid>org.apache.maven.plugins</groupid>                 <artifactid>maven-jar-plugin</artifactid>                 <configuration>                     <archive>                         <manifest>                             <addclasspath>true</addclasspath>                             <classpathprefix>lib/</classpathprefix>                             <mainclass>net.uofitorn.lunchtrackerserver</mainclass>                         </manifest>                     </archive>                 </configuration>             </plugin>         </plugins>     </build>      <dependencies>         <dependency>             <groupid>log4j</groupid>             <artifactid>log4j</artifactid>             <version>1.2.16</version>             <scope>compile</scope>         </dependency>     </dependencies> </project>

here java code:

import org.apache.log4j.logger; <snip> logger logger = logger.getlogger(lunchtrackerserver.class.getname()); logger.debug("server started");

i think problem log4j jar not being included in jar file. when unzip jar don't see it. how maven include log4j dependency in jar?

you need provide log4j dependency @ runtime, , provide need pack log4j artifact jar, here how can create fat jar


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