EDIT : Solved was missing the tag <packaging>maven-plugin</packaging> in my project pom. I misunderstood the sentence in this post, didn't know the meaning of leaving out ... :
thanks man, i figured it out already i left out <packaging>maven-plugin</packaging> in the pom file hope this helps others
I'm trying to build a maven plugin however I can't get the plugin.xml file to be generated.
I've tried command line and pom configuration for maven-plugin-plugin, with/without descriptor goal and phase. I guess I'm doing it right there.
Probably it is the rest that is not done correctly. The only related topics that I found is why is my maven plugin descriptor not being generated automatically? and it doesn't help much.
Here is the maven log
http://pastebin.com/uA2KFTXN
I have two mojos with Java4 anotations (#goal and #phase). I have the following tags in my Pom
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-plugin-plugin</artifactId>
<version>3.1</version>
<configuration>
<goalPrefix>signature</goalPrefix>
</configuration>
<executions>
<execution>
<goals>
<goal>descriptor</goal>
</goals>
<phase>process-classes</phase>
</execution>
</executions>
</plugin>
Related
I used simplejavamail in my maven project. The program can send out the email if I run it from Intellij IDE. But when I create a jar file, and run it from the jar file, then I got class not found for all the simplejavamail classes. And I open the jar, I find out that they are not included in the jar. But all the other dependency classes are there. Any one have meet this issue before?
parts of my pom.xml
<dependency>
<groupId>org.simplejavamail</groupId>
<artifactId>simple-java-mail</artifactId>
<version>6.4.3</version>
</dependency>
<build>
<finalName>my-project-name</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<configuration>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
<executions>
<execution>
<id>make-assembly</id>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
I'm having the same problem. It appears that the dependencies (Ex. Email, Mailer, EmailBuilder, etc) appear in the org.simplejavamail.api repository. I'll update you if I find a working solution with v6.4.3 but I have a feeling we may need to include additional dependencies.
Edit: To at least patch your problem,
<dependency>
<groupId>org.simplejavamail</groupId>
<artifactId>simple-java-mail</artifactId>
<version>5.5.1</version>
</dependency>
The 5.5.1 version still has the classes in the jar. You can reference this for yourself here:
https://www.javadoc.io/doc/org.simplejavamail/simple-java-mail/5.5.1/index.html
Then click on the different versions to see what classes exist.
I think something went wrong in their builds since v6.
Let me know if this helps!
Just started with Maven for real; got a big surprise right away.
I understand (or I think I do) the concept of fat jar/uberjars. Package your code with all the dependencies, etc. maven-shade-plugin, found docs, some example, checked that it works. Now adding it to my POC project, which came from the maven-archetype-quickstart - what could possibly go wrong, eh?
To put it short, quickstart arrange the the following way:
<build>
<pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
<plugins>
<plugin>
...
So I just threw in a plugin for shading, ready to call it a day:
<!-- Maven Shade Plugin -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>2.3</version>
<executions>
<!-- Run shade goal on package phase -->
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<transformers>
<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
</transformer>
</transformers>
</configuration>
</execution>
</executions>
</plugin>
Not so fast. First, I noticed that mvn clean package didn't mention maven-shade-plugin being executed (like the working example did). Hours of searching followed, and I was staring the "root cause" in the face - <pluginManagement>, offered by quickstart archetype, was it - somehow. Removing that tag magically allowed maven.shade.plugin to do its job. Otherwise, nope.
(Replica: https://github.com/alexakarpov/shade-me
unshade is the bad branch, master is good).
Talk about violation of the Principle of Least Surprise, eh =)
Can someone explain what's going on? The comment in generated pom mentioned something about parent pom, but I'm not doing anything with multi-pom setup yet..
<pluginManagement> role is described in Maven documentation :
Plugin Management contains plugin elements in much the same way [than plugins], except that rather than configuring plugin information for this particular project build, it is intended to configure project builds that inherit from this one.
Its goal here in the project generated by the archetype is to set specified versions of default plugins (maven-clean-plugin, maven-jar-plugin, ...). Note that these default plugins do not appear in your POM <plugins> section, but they are declared implicitly (you can check it by running mvn help:effective-pom).
But adding a plugin to <pluginManagement> section does not make your project invoke that plugin. Here, you can just set configuration and the version of the plugin you want to use. To invoke the plugin, you should absolutely declare it in <plugins> section.
In some projects (most of time multi-module projects), you could see the plugin and its configuration declared in <pluginManagement> of parent POM, and then referenced on <plugins> section of modules needing invocation of that plugin : thus, you do not have to repeat the same configuration on each module.
<pluginManagement> is mostly used if you want to use POM inheritance. Otherwise, on simple projects, you can just declare them in <plugins> section. I've also seen some projects defining all configuration in <pluginManagement>, just to make <plugins> section shorter and more readable, like the following example. It's just a matter of taste.
<build>
<!-- pluginManagement section : set versions and configurations -->
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>2.3</version>
<executions>
<!-- Run shade goal on package phase -->
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<transformers>
<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
</transformer>
</transformers>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</pluginManagement>
<!-- plugins section : plugins that are invoked when building the project -->
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
</plugin>
</plugins>
</build>
You can also read more on StackOverflow : Maven : What is pluginManagement?
I have been unable to use the checkstyle check goal. I'm getting the following error:
Unable to find configuration file at location:
${project.parent.basedir}/.settings/my_checks.xml: Could not find
resource '${project.parent.basedir}/.settings/my_checks.xml'.
I get this error when I use the command mvn checkstyle:check, but if I run mvn checkstyle:checkstyle this configuration file is found and used as expected.
The plugin configuration is shown below.
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-checkstyle-plugin</artifactId>
<version>2.17</version>
<executions>
<execution>
<goals>
<goal>check</goal>
</goals>
<phase>test</phase>
</execution>
</executions>
</plugin>
...
<properties>
<checkstyle.config.location>${project.parent.basedir}/.settings/my_checks.xml</checkstyle.config.location>
</properties>
Any suggestions? Why would the checkstyle goal work but not the check goal?
Edit: Upon further review I have learned that ${project.parent.basedir} does not resolve when running the check goal. It does resolve when calling the checkstyle goal. Still looking for suggestions / workarounds...
My workaround has been to move away from using the ${project.parent.basedir} variable and to use relative paths. This works in my case because all my modules are parallel directories.
<checkstyle.config.location>../parent/.settings/my_checks.xml</checkstyle.config.location>
I am just starting using maven and I use Apache Maven Shade Plugin a lot. Is it possible to add these code
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>2.2</version>
<configuration>
<!-- put your configurations here -->
</configuration>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
to default pom.xml. Yes, it can change setting.xml to make this plugin work with all project. But if I have some specific project which will not need this plugin, do I have to rewrite setting.xml again?
Another problem is that is it possible to change project layout of Maven. I use git a lot. Can I add sample .gitignore every time when I run mvn archetype:generate.
For you first issue, I think you can benefit from the parent POM:
http://books.sonatype.com/mvnex-book/reference/multimodule-sect-simple-parent.html
It's a defined POM file in which you put whatever you want. You publish it as a "pom" in your Maven repository and then, you can inherit from it in other projects. It is very convenient to lock dependency verions as well.
Your second issue seems more related to the archetype you are using than maven itself. You will probably have to create your own with a default .gitignore in it.
I have a Maven-built web-app that uses JPA 2.0 at the back end. The JPA provider is EclipseLink 2.3.2.
When I build the project (and it deploys runs successfully) it builds the JPA meta-model in the directory
${basedir}/target/generated-sources/annotations/
Yet the IDE doesn't see the classes defined there. Little red dots with an exclamation point everywhere. Yet I can navigate to those files in the Projects window and open the generated source files.
Does this happen to anyone else and does anyone know of a way to fix it?
UPDATE:
As a work-around I have discovered that I can exit NetBeans, delete the NetBeans cache directory, then restart. This forces NetBeans to rebuild the cache and then the classes become visible again. Should I submit a bug to the NetBeans bug tracker? I can't come up with a test case to make it happen, but it does fairly often.
If you go to project properties/sources there is a note about this: you need to generate sources under
${basedir}/target/generated-sources/FOOBAR
where FOOBAR is the name of your plugin.
After reading #jeqo answer, I tested if, by manually renaming:
"${project.build.directory}/generated-sources/annotations" to ".../generated-sources/hibernate-jpamodelgen"
would make a difference to Nebeans (I'm using v8.2 on ubuntu 16.04).
Everything worked like a charm.
I then modified the pom file as follows:
1) removed the "org.hibernate: hibernate.jpamodelgen" dependency.
2) configured the maven-compiler-plugin as follows:
<plugin>
<groupId>>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.6.1</version>
<configuration>
<compilerArgument>-proc:none</compilerArgument>
</configuration>
</plugin>
These two steps is to make sure that the hibernate-jpamodelgen does
not run on auto-pilot just by adding it in the project dependency
list. Please refer to JPA Static MetaModel Generator doc.
3) added the following plugin with configuration
<plugin>
<groupId>org.bsc.maven</groupId>
<artifactId>maven-processor-plugin</artifactId>
<version>3.2.0</version>
<executions>
<execution>
<id>process</id>
<goals>
<goal>process</goal>
</goals>
<phase>generate-sources</phase>
<configuration>
<processors>
<processor>org.hibernate.jpamodelgen.JPAMetaModelEntityProcessor</processor>
</processors>
<defaultOutputDirectory>${project.build.directory}/generated-sources/hibernate-jpamodelgen/</defaultOutputDirectory>
</configuration>
</execution>
</executions>
<dependencies>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-jpamodelgen</artifactId>
<version>5.2.9.Final</version>
</dependency>
</dependencies>
</plugin>
This config is directly from the Hibernate JPA Static Metamodel Generator documentation page except for the following line:
<defaultOutputDirectory>${project.build.directory}/generated-sources/hibernate-jpamodelgen/</defaultOutputDirectory>
This line simply generates the metamodel in the directory named after the maven plugin name. From this point, I got all Netbeans references working at design time as if the generated classes were in the src directory subtree.
Hope this helps,
J
Sometimes Netbeans has troubles refreshing. Perhaps clean and rebuild the project and restart Netbeans?
Today I did more experiments on this topic because it is so annoying for me as well. Finally I have realized it is only a problem related how NetBeans deal with indexing classes. This is not a problem of the target directory name and not a problem of the project. It is only NetBeans' mistake. So I have created an issue as well hopefully NetBeans Team can bring the final solution soon. You can see my ticket here https://issues.apache.org/jira/browse/NETBEANS-4191
In my environment the NetBeans 11.3 (x64) with openJDK 1.8.0_242-b08 and apache-maven 3.6.3 version is used under Windows 10 (1607).
But until the final solution arrives here is what I did as a workaround solving the symbol not found problem.
I have added a profile section to my pom file:
<profile>
<id>nb-modelgen-fix</id>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-antrun-plugin</artifactId>
<version>3.0.0</version>
<executions>
<execution>
<id>modelgen-touch-files</id>
<phase>install</phase>
<goals>
<goal>run</goal>
</goals>
<configuration>
<target>
<touch>
<fileset id="model.elements" dir="src/main/java" includes="**/*.java">
<containsregexp expression="(#Entity|#MappedSuperclass|#Embeddable)" casesensitive="yes" />
</fileset>
</touch>
</target>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</profile>
I am using the following simple solution to generate the metamodel classes in my project:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<annotationProcessors>
<annotationProcessor>
org.eclipse.persistence.internal.jpa.modelgen.CanonicalModelProcessor
</annotationProcessor>
</annotationProcessors>
<compilerArgs>
<arg>-Aeclipselink.persistenceunits=MY-PU</arg>
</compilerArgs>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
And of course a maven-build-helper adding the generated source folders to the project:
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>build-helper-maven-plugin</artifactId>
<version>3.1.0</version>
<executions>
<execution>
<id>add-source</id>
<phase>generate-sources</phase>
<goals>
<goal>add-source</goal>
</goals>
<configuration>
<sources>
<source>${project.build.directory}/generated-sources/annotations</source>
<source>${project.build.directory}/generated-sources/wsimport</source>
</sources>
</configuration>
</execution>
</executions>
</plugin>
And also I have created a file in the same place where the pom.xml is located called nbactions.xml with the following content (to activate this profile in NetBeans IDE only)
<?xml version="1.0" encoding="UTF-8"?>
<actions>
<action>
<actionName>rebuild</actionName>
<packagings>
<packaging>*</packaging>
</packagings>
<goals>
<goal>clean</goal>
<goal>install</goal>
</goals>
<activatedProfiles>
<activatedProfile>nb-modelgen-fix</activatedProfile>
</activatedProfiles>
</action>
</actions>
What it does? When you execute the "Clean and Build" action in NetBeans IDE it activates a task (implemented easily with maven-antrun-plugin) which just a simple touch on all JPA annotated with #Entity, #MappedSuperClass or #Embeddable theese are the sources for the metamodel generations. I have attached this task to the install phase but it worked as well in other phases as well. It lookes that this way NetBeans wake up and makes for the missing indexes for the metamodel classess.
You can read more on this in my NetBeans' issue ticket.
I hope this can save time for anybody else.
If you are using jaxws then make sure you add a <sourceDestDir> node to the <configuration> section of the jaxws plug-in "artifact" in the appropriate pom. For example:
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>jaxws-maven-plugin</artifactId>
<executions>
<execution>
<goals>
<goal>dojaxws</goal>
</goals>
<configuration>
<sourceDestDir>${project.build.directory}/generated-sources/jaxws</sourceDestDir>
....
</configuration>
</execution>
</executions>
<configuration>
<wsdlDirectory>src/main/resources/com/mystuff/ws</wsdlDirectory>
<bindingDirectory>src/jaxws/binding</bindingDirectory>
<target>2.0</target>
</configuration>
</plugin>
As explained above and as noted by netbeans, you must use the generate-sources path appended with the "plug-in" name. Hopefully the above clears up what "plug-in name" means and how exactly one is supposed to get jaxws to put the generated sources where netbeans need them to be. Clearly the "configuration" section will be different for each plugin... The node <sourceDestDir> is needed for jaxws, other plugins may use something else.
For me it worked after I added <endorsed.dir>${project.build.directory}/endorsed</endorsed.dir> to the <properties> of the pom.xml, e.g.:
<properties>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<endorsed.dir>${project.build.directory}/endorsed</endorsed.dir>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<jakartaee>8.0</jakartaee>
</properties>
But I have no explanation why.