Maven - example pom file with Spring Boot 2.4 + Tomcat 9 + JSP + Servlet 4.0 + log4j2 + Lombok + Hibernate + JPA + MySQL

In this article, we want to show an example Maven pom.xml file configuration to use together:

• Spring Boot 2.4
• Tomcat 9 (JSP files, Servlet 4.0)
• log4j2
• Lombok
• Hibernate + JPA + JPA 2 Metamodel Generator
• MySQL

• JUnit 4

• WAR package output

Note: the below configuration enables automatic pre-compilation for Lombok and Metamodel Generator.

Run mvn clean install package to build the executable war file.
Run java -jar target/my-project.war to start Spring Boot Application (with Tomcat 9 that supports JSP files).

example pom.xml file:

<?xml version="1.0" encoding="UTF-8"?>
<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>my-project</groupId>
	<artifactId>my-project</artifactId>
	<version>1.0</version>

	<name>my-project</name>
	<packaging>war</packaging>

    <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-web/2.4.3 -->
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.4.3</version>
		<relativePath/>
	</parent>

	<properties>
		<java.version>1.8</java.version>
		<spring.version>${project.parent.version}</spring.version>
		<maven.compiler.source>${java.version}</maven.compiler.source>
		<maven.compiler.target>${java.version}</maven.compiler.target>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
	</properties>

	<dependencies>

		<!-- #################### -->
		<!-- SPRING BOOT          -->
		<!-- #################### -->

		<!-- Web -->
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
			<version>${spring.version}</version>
			<exclusions>
				<!-- we want to select different logger so current one is disabled -->
				<exclusion>
					<groupId>org.springframework.boot</groupId>
					<artifactId>spring-boot-starter-logging</artifactId>
				</exclusion>
			</exclusions>
		</dependency>

		<!-- log4j2 as default spring boot logger -->
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-log4j2</artifactId>
			<version>${spring.version}</version>
		</dependency>

		<!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-configuration-processor -->
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-configuration-processor</artifactId>
			<version>${spring.version}</version>
		</dependency>

		<!-- Web with Tomcat + Embed -->
		<!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-tomcat -->
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-tomcat</artifactId>
			<version>${spring.version}</version>
			<scope>provided</scope>
		</dependency>

		<!-- JSTL -->
		<!-- https://mvnrepository.com/artifact/javax.servlet/jstl -->
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>jstl</artifactId>
			<version>1.2</version>
		</dependency>

		<!-- Servlet 4.0 API -->
        <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>javax.servlet-api</artifactId>
			<version>4.0.0</version>
		</dependency>

		<!-- Need those to compile JSP -->
		<!-- https://mvnrepository.com/artifact/org.apache.tomcat.embed/tomcat-embed-jasper -->
		<dependency>
			<groupId>org.apache.tomcat.embed</groupId>
			<artifactId>tomcat-embed-jasper</artifactId>
			<version>9.0.45</version>
			<scope>provided</scope>
		</dependency>

		<!-- JDBC -->
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-jdbc</artifactId>
		</dependency>

		<!-- JPA -->
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-data-jpa</artifactId>
			<version>${spring.version}</version>
		</dependency>

		<!-- Security -->
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-security</artifactId>
			<version>${spring.version}</version>
		</dependency>


		<!-- #################### -->
		<!-- MYSQL                -->
		<!-- #################### -->

		<!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<version>8.0.22</version>
		</dependency>


		<!-- #################### -->
		<!-- HIBERNATE            -->
		<!-- #################### -->

		<!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-core -->
		<dependency>
			<groupId>org.hibernate</groupId>
			<artifactId>hibernate-core</artifactId>
            <version>5.4.17.Final</version>
		</dependency>

		<!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-validator -->
		<dependency>
			<groupId> org.hibernate.validator</groupId>
			<artifactId>hibernate-validator</artifactId>
            <version>6.1.5.Final</version>
		</dependency>

        <!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-entitymanager -->
		<dependency>
			<groupId>org.hibernate</groupId>
			<artifactId>hibernate-entitymanager</artifactId>
            <version>5.4.17.Final</version>
		</dependency>

		<dependency>
			<groupId>org.hibernate</groupId>
			<artifactId>hibernate-jpamodelgen</artifactId>
			<version>5.4.27.Final</version>
			<scope>provided</scope>
			<optional>true</optional>
		</dependency>


		<!-- #################### -->
		<!-- TESTING              -->
		<!-- #################### -->

        <!-- https://mvnrepository.com/artifact/junit/junit -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.13.1</version>
        </dependency>

		<!-- https://mvnrepository.com/artifact/org.assertj/assertj-core -->
		<!-- Date	(Jan 21, 2017) -->
		<dependency>
			<groupId>org.assertj</groupId>
			<artifactId>assertj-core</artifactId>
			<version>3.6.2</version>
		</dependency>


		<!-- #################### -->
		<!-- OTHER THINGS         -->
		<!-- #################### -->

		<!-- https://mvnrepository.com/artifact/com.google.guava/guava -->
		<dependency>
			<groupId>com.google.guava</groupId>
			<artifactId>guava</artifactId>
			<version>27.0.1-jre</version>
		</dependency>

		<!-- https://mvnrepository.com/artifact/org.projectlombok/lombok -->
		<dependency>
			<groupId>org.projectlombok</groupId>
			<artifactId>lombok</artifactId>
			<version>1.18.6</version>
			<scope>provided</scope>
		</dependency>

    </dependencies>

	<!-- https://github.com/dirask/spring-boot-web-jsp-example -->
	<build>
		<finalName>${project.artifactId}</finalName>
		<plugins>
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-compiler-plugin</artifactId>
				<version>3.7.0</version>
				<configuration>
					<annotationProcessorPaths>
						<path>
							<groupId>org.projectlombok</groupId>
							<artifactId>lombok</artifactId>
							<version>1.18.6</version>
						</path>
						<path>
							<groupId>org.hibernate</groupId>
							<artifactId>hibernate-jpamodelgen</artifactId>
							<version>5.4.27.Final</version>
						</path>
					</annotationProcessorPaths>
					<source>${maven.compiler.source}</source>
					<target>${maven.compiler.target}</target>
					<verbose>true</verbose>
				</configuration>
			</plugin>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
		</plugins>
	</build>

</project>