Deploy both war and jar files into Nexus using maven in Jenkins

Introduction

This tutorial will show you how to deploy both war and jar file from an web application using maven in Jenkins. By default when we build the web project in Jenkins then the war file gets uploaded into nexus repository but not the jar file.

Sometimes we need to upload both war and jar files for an web application using maven, because, the standalone project may need to include the jar file of the web application and another web project may need to include the war file of the web application. Hence we require to upload both war and jar files into Nexus.

We need maven war plugin to create an war file for the web application.

Prerequisites

Maven

Creating WAR

The below maven plugin is required to create a war file for the web application.

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-war-plugin</artifactId>
    <executions>
        <execution>
            <phase>package</phase>
            <configuration>
                <attachClasses>true</attachClasses>
                <webXml>${basedir}/src/main/webapp/WEB-INF/web.xml</webXml>
            </configuration>
            <goals>
                <goal>inplace</goal>
            </goals>
        </execution>
    </executions>
</plugin>

Creating JAR

We need maven jar plugin to create a jar file for the web application.

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-jar-plugin</artifactId>
    <executions>
        <execution>
            <id>make-a-jar</id>
            <phase>compile</phase>
            <goals>
                <goal>jar</goal>
            </goals>
        </execution>
    </executions>
</plugin>

Keeping JAR in Build Directory

We need to keep the generated jar file into the build directory. So use the below maven plugin.

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-install-plugin</artifactId>
    <executions>
        <execution>
            <id>Add-2-local-repository</id>
            <phase>package</phase>
            <configuration>
                <packaging>jar</packaging>
                <file>${project.build.directory}\${artifactId}-${version}.jar</file>
            </configuration>
            <goals>
                <goal>install-file</goal>
            </goals>
        </execution>
    </executions>
</plugin>

Upload JAR into Nexus

Now we need another plugin to upload jar artifact as well into the repository.

<plugin>
    <groupId>org.codehaus.mojo</groupId>
    <artifactId>build-helper-maven-plugin</artifactId>
    <version>1.7</version>
    <executions>
        <execution>
            <id>attach-artifacts</id>
            <phase>package</phase>
            <goals>
                <goal>attach-artifact</goal>
            </goals>
            <configuration>
                <artifacts>
                    <artifact>
                        <file>${project.build.directory}/${artifactId}-${version}.jar</file>
                        <type>jar</type>
                    </artifact>
                </artifacts>
            </configuration>
        </execution>
    </executions>
</plugin>

Entire Content

Putting all together, the entire pom.xml file is given below:

<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/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.roytuts</groupId>
    <artifactId>webapp</artifactId>
    <packaging>war</packaging>
    <version>0.0.1-SNAPSHOT</version>
    <name>webapp Maven Webapp</name>
    <url>http://maven.apache.org</url>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <jdk.version>1.8</jdk.version>
        <junit.version>4.11</junit.version>
        <servlet.version>3.1.0</servlet.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>${servlet.version}</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>${junit.version}</version>
            <scope>test</scope>
        </dependency>
    </dependencies>
    <build>
        <finalName>webapp</finalName>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>${jdk.version}</source>
                    <target>${jdk.version}</target>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-war-plugin</artifactId>
                <executions>
                    <execution>
                        <phase>package</phase>
                        <configuration>
                            <attachClasses>true</attachClasses>
                            <webXml>${basedir}/src/main/webapp/WEB-INF/web.xml</webXml>
                        </configuration>
                        <goals>
                            <goal>inplace</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <executions>
                    <execution>
                        <id>make-a-jar</id>
                        <phase>compile</phase>
                        <goals>
                            <goal>jar</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-install-plugin</artifactId>
                <executions>
                    <execution>
                        <id>Add-2-local-repository</id>
                        <phase>package</phase>
                        <configuration>
                            <packaging>jar</packaging>                            <file>${project.build.directory}\${artifactId}-${version}.jar</file>
                        </configuration>
                        <goals>
                            <goal>install-file</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>build-helper-maven-plugin</artifactId>
                <version>1.7</version>
                <executions>
                    <execution>
                        <id>attach-artifacts</id>
                        <phase>package</phase>
                        <goals>
                            <goal>attach-artifact</goal>
                        </goals>
                        <configuration>
                            <artifacts>
                                <artifact>
                                    <file>${project.build.directory}/${artifactId}-${version}.jar</file>
                                    <type>jar</type>
                                </artifact>
                            </artifacts>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

That’s all. Thanks for reading.

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