I recently installed Eclipse (2021-09) IDE on my Ubuntu 20.04. Recently we used Netbeans for most development and remote debugging.
Using the maven project wizard I was able to generate a project with both a build.xml and pom.xml file already generated. I assume the IDE can detect the necessary plugins and configuration. My goal is to connect and debug java applications remotely to a RaspberryPi.
the pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<modelVersion>4.0.0</modelVersion>
<groupId>IntelligentHome</groupId>
<artifactId>RaspberryPi</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>RaspberryPi</name>
<!-- FIXME change it to the project's website -->
<url></url>
<!--
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<configuration>
<archive>
<manifest>
<mainClass>IntelligentHome.RaspberryPi.App</mainClass>
</manifest>
</archive>
</configuration>
</plugin>
</plugins>
</build>
-->
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.7</maven.compiler.source>
<maven.compiler.target>1.7</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
</dependencies>
<pluginRepositories>
<pluginRepository>
<id>maven2</id>
<url>repo.maven.apache.org/maven2/</url>
</pluginRepository>
</pluginRepositories>
<build>
<pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
<plugins>
<!-- clean lifecycle, see core/lifecycles.html#clean_Lifecycle -->
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>3.1.0</version>
</plugin>
<!-- default lifecycle, jar packaging: see core/default-bindings.html#Plugin_bindings_for_jar_packaging -->
<plugin>
<artifactId>maven-resources-plugin</artifactId>
<version>3.0.2</version>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.0</version>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.22.1</version>
</plugin>
<plugin>
<artifactId>maven-jar-plugin</artifactId>
<version>3.0.2</version>
</plugin>
<plugin>
<artifactId>maven-install-plugin</artifactId>
<version>2.5.2</version>
</plugin>
<plugin>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.8.2</version>
</plugin>
<!-- site lifecycle, see core/lifecycles.html#site_Lifecycle -->
<plugin>
<artifactId>maven-site-plugin</artifactId>
<version>3.7.1</version>
</plugin>
<plugin>
<artifactId>maven-project-info-reports-plugin</artifactId>
<version>3.0.0</version>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
with the build.xml
<?xml version="1.0" encoding="UTF-8"?>
<project name="hello" default="remote-run" basedir="."
xmlns:artifact="antlib:org.apache.maven.artifact.ant">
<!-- Setup RASPBERRY PI properties -->
<property name="raspberrypi" value="192.168.4.2" />
<property name="raspberryfolder" value="~" />
<property name="username" value="pi" />
<property name="password" value="raspberry" />
<!--
<path id="maven-ant-tasks.classpath" path="${ant.libs.dir}/maven-ant-tasks-2.1.3.jar" />
<typedef
resource="org/apache/maven/artifact/ant/antlib.xml"
uri="antlib:org.apache.maven.artifact.ant"
classpathref="maven-ant-tasks.classpath" />
<path id="maven-ant-tasks.classpath" path="lib/maven-ant-tasks-2.1.3.jar" />
<typedef
resource="org/apache/maven/artifact/ant/antlib.xml"
uri="antlib:org.apache.maven.artifact.ant"
classpathref="maven-ant-tasks.classpath" />
-->
<!-- Add maven install target to be run before deploy -->
<target name="maven-install">
<artifact:mvn pom="pom.xml">
<arg value="install"/>
</artifact:mvn>
</target>
<!-- Locate the prokect jar and transfer via scp to RASPBERRY PI -->
<target name="transfer" depends="maven-install">
<first id="jars">
<!--
<fileset dir="target" includes="**/*-SNAPSHOT-jar-with-dependencies.jar" />
-->
<fileset dir="target" includes="**/*.jar" />
</first>
<pathconvert pathsep="," property="jar.path" refid="jars" />
<basename file="${jar.path}" property="jar.filename" />
<echo>">>> Found application ${jar.path}"</echo>
<echo>">>> Copying application to ${raspberrypi}:${raspberryfolder}/${jar.filename}"</echo>
<scp
localfile="${jar.path}"
todir="${username}:${password}@${raspberrypi}:${raspberryfolder}"
trust="true" />
</target>
<!-- Run java -->
<target name="remote-run" depends="transfer">
<echo>">>> Starting ${raspberrypi}:${raspberryfolder}/${jar.filename}"</echo>
<sshexec
host="${raspberrypi}"
username="${username}"
password="${password}"
trust="true"
failonerror="true"
usepty="true"
command="java -jar ${jar.filename}" />
</target>
<!-- Run java in debug mode and keep waiting for execution -->
<target name="remote-debug" depends="transfer">
<echo>">>> Starting ${raspberrypi}:${raspberryfolder}/${jar.filename} in debug mode"</echo>
<sshexec
host="${raspberrypi}"
username="${username}"
password="${password}"
trust="true"
failonerror="true"
usepty="true"
command="java -Xdebug -Xrunjdwp:server=y,transport=dt_socket,address=8000,suspend=y -jar ${jar.filename}" />
</target>
</project>
Running the Ant build results in this error
[artifact:mvn] [INFO] Scanning for projects...
[artifact:mvn] [INFO] ------------------------------------------------------------------------
[artifact:mvn] [INFO] Building RaspberryPi
[artifact:mvn] [INFO] task-segment: [install]
[artifact:mvn] [INFO] ------------------------------------------------------------------------
[artifact:mvn] [INFO] ------------------------------------------------------------------------
[artifact:mvn] [ERROR] BUILD ERROR
[artifact:mvn] [INFO] ------------------------------------------------------------------------
[artifact:mvn] [INFO] Error resolving version for 'org.apache.maven.plugins:maven-resources-plugin': Plugin requires Maven version 3.0
[artifact:mvn] [INFO] ------------------------------------------------------------------------
[artifact:mvn] [INFO] For more information, run Maven with the -e switch
[artifact:mvn] [INFO] ------------------------------------------------------------------------
[artifact:mvn] [INFO] Total time: < 1 second
[artifact:mvn] [INFO] Finished at: Wed Dec 01 11:15:06 CET 2021
[artifact:mvn] [INFO] Final Memory: 12M/54M
[artifact:mvn] [INFO] ------------------------------------------------------------------------
[artifact:mvn] Java Result: 1
The current installed maven version is: mvn -version Apache Maven 3.6.3. The workbench also points to the current maven installation (Help -> Preferences -> Maven -> Installation).
What generates this error?
Removing all the plugins from the pom.xml results in no error and the .jar is executed remotely on the target.
Do I need all the plugins? What do they do?
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