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This pom.xml file works for this Spark project
I am using Visual Studio Code and Maven build tool for this project. I went to the Java Spark documentation at http://sparkjava.com/tutorials/maven-setup and copied their example of a pom.xml file into my own. After that, I added the slf4j dependency. Below is the pom.xml file that worked for me:
<project> <!-- model version - always 4.0.0 for Maven 2.x POMs --> <modelVersion>4.0.0</modelVersion> <!-- project coordinates - values which uniquely identify this project --> <groupId>com.teamtreehouse.courses</groupId> <artifactId>course-ideas</artifactId> <version>1.0</version> <properties> <maven.compiler.source>1.8</maven.compiler.source> <maven.compiler.target>1.8</maven.compiler.target> </properties> <!-- library dependencies --> <dependencies> <dependency> <groupId>com.sparkjava</groupId> <artifactId>spark-core</artifactId> <version>2.5</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-jdk14</artifactId> <version>1.7.30</version> </dependency> </dependencies> </project>
If you see this error message: SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder". SLF4J: Defaulting to no-operation (NOP) logger implementation. SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
It means you need to include an slf4j logging implementation in your maven dependencies For example, add the following to your pom.xml dependencies:
<dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-jdk14</artifactId> <version>1.7.30</version> </dependency>