how to access variable in pom.xml from external properties file? - maven

Question

I need to get value through a key in pom.xml from external properties files. Location of properties file is in src/main/resources/dev.properties.
I have tried to solve this by using properties in maven. Please help me.
pom.xml:
<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>Simple_project</groupId>
<artifactId>Project</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>Project Maven Webapp</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
</dependency>
</dependencies>
<build>
<finalName>${Project.Name}</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<configuration>
<outputDirectory>${path}</outputDirectory>
</configuration>
</plugin>
</plugins>
</build>
</project>
// properties File
dev.properties:
projectPath=/home/user/warfile
Project.Name = newProject
Thanks & Regards,
Tharanya B

Answer 1

You have to use the properties plugin:
Plugin
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>properties-maven-plugin</artifactId>
<version>1.0.0</version>
<executions>
<execution>
<phase>initialize</phase>
<goals>
<goal>read-project-properties</goal>
</goals>
<configuration>
<files>
<file>${basedir}/${propertiesFile}</file>
</files>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
Mvn Command
mvn -DpropertiesFile=dev.properties properties:read-project-properties clean install
Alternatively
You can hardcode the file:
<file>${basedir}/dev.properties</file>