Could not lookup required component: java.util.NoSuchElementException - maven

I started testing a Maven plug-in via the maven-invoker-plugin, and am stuck with a weird exception:
[ERROR] Failed to execute goal my.company:plugin:1.0.4-SNAPSHOT:goal on project org.acme.simple: Could not lookup required component: java.util.NoSuchElementException
[ERROR] role: my.company.plugin.SomeClass
I added the maven-invoker-plugin like this:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-invoker-plugin</artifactId>
<version>2.0.0</version>
<configuration>
<pomIncludes>
<pomInclude>simple/pom.xml</pomInclude>
</pomIncludes>
<cloneProjectsTo>${project.build.directory}/it</cloneProjectsTo>
<settingsFile>src/it/settings.xml</settingsFile>
</configuration>
<executions>
<execution>
<id>integration-test</id>
<goals>
<goal>install</goal>
<goal>run</goal>
</goals>
</execution>
</executions>
</plugin>
I -erm- borrowed the settings.xml from this Maven plug-in. And what fails in the pom.xml to be tested is this call:
<plugin>
<groupId>my.company</groupId>
<artifactId>plugin</artifactId>
<version>#project.version#</version>
</plugin>
After some more digging around, I figure that Tycho is at least part of the problem:
<packaging>eclipse-plugin</packaging>
<build>
<plugins>
<plugin>
<groupId>org.eclipse.tycho</groupId>
<artifactId>tycho-maven-plugin</artifactId>
<version>0.22.0</version>
<extensions>true</extensions>
</plugin>
</plugins>
</build>
If I remove #project.version# it works, but it's evidently not the current version of the plug-in that is tested. So I guess I have to leave it in. I tried adding maven-compat (as suggested here), but it didn't do anything.
The same exception is displayed when I don't add the plug-in in the pom.xml, but call it via:
invoker.goals=${project.groupId}:${project.artifactId}:${project.version}:goal
Any advice how to handle that problem?

Evidently this plug-in got lost somehow, adding it again made the exception go away:
<plugin>
<groupId>org.codehaus.plexus</groupId>
<artifactId>plexus-component-metadata</artifactId>
<version>1.5.5</version>
<executions>
<execution>
<goals>
<goal>generate-metadata</goal>
<goal>generate-test-metadata</goal>
</goals>
</execution>
</executions>
</plugin>

Related

Maven shade plugin is not called automatically for goal "package"

I've spent quite a bit of time figuring out how to invoke Maven shade plugin to build a uber-jar (with all dependencies).
Most of the google-able info that I found (including numerous examples, and Maven documentation) suggests that all I have to do is include the plugin into pom.xml:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>2.4.3</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
</execution>
</executions>
</plugin>
and then "mvn package" (or any other goal that eventually invokes "package") will automatically trigger this plugin.
But no matter what I tried - the only way to actually invoke the plugin appears to be: running "mvn package shade:shade" (which seems to defeat the purpose of config-driven build). Same results whether running Maven from within Eclipse (STS Version: 3.8.2.RELEASE), or from command line (Apache Maven 3.3.9).
Am I missing anything?
UPD: solved, see answer by GauravJ.
I have managed to reproduce your problem. In your pom.xml, you must have defined plugin like below,
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>2.4.3</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
</execution>
</executions>
</plugin>
....
</plugins>
</pluginManagement>
</build>
instead of
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>2.4.3</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
This will probably fix your problem.

How can I execute following maven plugin before resolving the dependencies

I am from ANT background and newbie to Maven.
For some reason, I need to execute shell script before maven tries to fetch snapshot dependencies.
So I wrote following plugin configuration, but I not getting how can I make it invoke before resolving dependencies task.
I am using Apache Maven 3.0.5
Following is the part of my pom.xml
<build>
<finalName>edte</finalName>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.5.0</version>
<executions>
<execution>
<phase>clean</phase>
<goals>
<goal>exec</goal>
</goals>
</execution>
</executions>
<configuration>
<executable>Docs/ci/delete_snapshots.sh</executable>
<arguments>
<argument>${user.home}</argument>
</arguments>
</configuration>
</plugin>
</plugins>
</pluginManagement>
</build>
Any help is appreciated.

Maven jarsigner plugin

I just tried to configure the maven jarsigner plugin for signing a jar project.
As far as I can understand, the plugin should run automatically when I run mvn clean package but it doesn't.
I must run mvn clean package jarsigner:sign for the plugin to be executed.
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jarsigner-plugin</artifactId>
<version>1.4</version>
<configuration>
<executions>
<execution>
<id>sign</id>
<phase>package</phase>
<goals>
<goal>sign</goal>
</goals>
</execution>
</executions>
<alias>java-code</alias>
<keystore>mykeystore.keystore</keystore>
<keypass>mykeypass</keypass>
<storepass>mystorepass</storepass>
<verbose>true</verbose>
</configuration>
</plugin>
</plugins>
</build>
I could find the error on my own. The configuration element has to be within the execution element.
Thanks.

Generating java from rpc wsdl

I have a pom which generates some java code from an RPC wsdl. The problem is that the code is never generated.
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>axistools-maven-plugin</artifactId>
<version>1.4</version>
<configuration>
<sourceDirectory>src/main/resources</sourceDirectory>
<outputDirectory>${project.build.directory}/generated/rpc</outputDirectory>
<packageSpace>com.company.wsdl</packageSpace>
<testCases>false</testCases>
<serverSide>true</serverSide>
<subPackageByFileName>false</subPackageByFileName>
</configuration>
<executions>
<execution>
<goals>
<goal>wsdl2java</goal>
</goals>
</execution>
</executions>
</plugin>
Any ideas as to why this isnt generating the java code?
After taken a look into your pom I realized your problem. It's not related to calling mvn its based on the configuration you made.
You have configured the axistools-maven-plugin in the pluginManagement area. In this case you need to do this in the build area like this:
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>axistools-maven-plugin</artifactId>
<version>1.4</version>
<configuration>
..
</configuration>
<executions>
<execution>
<goals>
<goal>wsdl2java</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
...
</build>
instead of:
<build>
<pluginManagement>
<plugins>
...
</plugins>
</pluginManagement>
...
</build>
If you configure it correctly you can use mvn clean package or mvn clean install instead of calling mvn axistools:wsdl2java ...

Disable a Maven plugin defined in a parent POM

I am using a parent POM that defines a plugin that I do not want to be run in a child POM. How can I disable the plugin in the child pom completely?
Constraint: I cannot change the parent POM itself.
The following works for me when disabling Findbugs in a child POM:
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>findbugs-maven-plugin</artifactId>
<executions>
<execution>
<id>ID_AS_IN_PARENT</id> <!-- id is necessary sometimes -->
<phase>none</phase>
</execution>
</executions>
</plugin>
Note: the full definition of the Findbugs plugin is in our parent/super POM, so it'll inherit the version and so-on.
In Maven 3, you'll need to use:
<configuration>
<skip>true</skip>
</configuration>
for the plugin.
See if the plugin has a 'skip' configuration parameter. Nearly all do. if it does, just add it to a declaration in the child:
<plugin>
<groupId>group</groupId>
<artifactId>artifact</artifactId>
<configuration>
<skip>true</skip>
</configuration>
</plugin>
If not, then use:
<plugin>
<groupId>group</groupId>
<artifactId>artifact</artifactId>
<executions>
<execution>
<id>TheNameOfTheRelevantExecution</id>
<phase>none</phase>
</execution>
</executions>
</plugin>
The thread is old, but maybe someone is still interested.
The shortest form I found is further improvement on the example from λlex and bmargulies. The execution tag will look like:
<execution>
<id>TheNameOfTheRelevantExecution</id>
<phase/>
</execution>
2 points I want to highlight:
phase is set to nothing, which looks less hacky than 'none', though still a hack.
id must be the same as execution you want to override. If you don't specify id for execution, Maven will do it implicitly (in a way not expected intuitively by you).
After posting found it is already in stackoverflow:
In a Maven multi-module project, how can I disable a plugin in one child?
I know this thread is really old but the solution from #Ivan Bondarenko helped me in my situation.
I had the following in my pom.xml.
<build>
...
<plugins>
<plugin>
<groupId>com.consol.citrus</groupId>
<artifactId>citrus-remote-maven-plugin</artifactId>
<version>${citrus.version}</version>
<executions>
<execution>
<id>generate-citrus-war</id>
<goals>
<goal>test-war</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
What I wanted, was to disable the execution of generate-citrus-war for a specific profile and this was the solution:
<profile>
<id>it</id>
<build>
<plugins>
<plugin>
<groupId>com.consol.citrus</groupId>
<artifactId>citrus-remote-maven-plugin</artifactId>
<version>${citrus.version}</version>
<executions>
<!-- disable generating the war for this profile -->
<execution>
<id>generate-citrus-war</id>
<phase/>
</execution>
<!-- do something else -->
<execution>
...
</execution>
</executions>
</plugin>
</plugins>
</build>
</profile>

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