How do I add an extra classpath entry into my spring boot run from maven?
I think I need to add something like this to my pom.xml:
<configuration> <additionalClasspathElements> <additionalClasspathElement>C:/resources</additionalClasspathElement> </additionalClasspathElements> </configuration> However, I do not know what plugin is applicable.
I assume what you want is to add your additional resources/configuration files to the classpath in the generated executable jar of Spring Boot. The only off the shelf solution I have found was to use the maven-jar-plugin in addition to the spring-boot-maven-plugin to add the classpath to the manifest, for example:
<!-- setup jar manifest to executable with dependencies --> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> <version>2.0.3.RELEASE</version> <configuration> <fork>true</fork> <mainClass>Application</mainClass> <classifier>executable</classifier> <layout>JAR</layout> </configuration> <executions> <execution> <goals> <goal>repackage</goal> </goals> </execution> </executions> </plugin> <!-- add configuration to manifest --> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-jar-plugin</artifactId> <version>3.0.2</version> <configuration> <archive> <manifestEntries> <Class-Path>conf/</Class-Path> </manifestEntries> </archive> </configuration> </plugin> Note that the class-path will be relative to the generated executable JAR file.
java -jar, it ignores both the -classpath switch and the CLASSPATH envionment variable. The only way to make it find the class is to add the external jar to the Manifest's classpath through this plugin.Wouldn't:
java -cp <path to classpath entry> -jar <path to program.jar> work for you?
