SkinnyWars importing conflicting snapshots - maven

I am using the maven-ear-plugin to build an ear file with skinny wars.
I am working with another team that provides daily snapshots And what I am
getting is the situation if I have not built snapshots locally then
The ear file has the daily builds (which is good) and the war files
have my most recent snapshot (which is not good).
e.g. the ear file will have
imported1-2017-010101.jar
and the war file will have
imported1-SNAPSHOT.jar
It seems that this is happening due to the daily build having a date stamp in their name while the snapshot does not.
If I build snapshots of the imported libraries prior to building the ear file.
e.g. the ear file will have
imported1-SNAPSHOT.jar
and the war file will not have the library.
this is the ear configuration
<profile>
<id>skinny</id>
<activation>
<property>
<name>!skinny</name>
</property>
</activation>
<dependencies>
<dependency>
<groupId>my.library</groupId>
<artifactId>war-1</artifactId>
<type>pom</type>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>my.library</groupId>
<artifactId>war-2</artifactId>
<type>pom</type>
<version>${project.version}</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<artifactId>maven-ear-plugin</artifactId>
<configuration>
<defaultLibBundleDir>/lib</defaultLibBundleDir>
<skinnyWars>true</skinnyWars>
</configuration>
</plugin>
</plugins>
</build>
</profile>
Have I got something wrong or does the plugin just not work in this case?

I resolved this by reviewing my Maven Repository snapshot behaviour.
I'm using Artifactory as maven Repository. It allows you to choose between 3 different behaviours to name you Snapshot, one of them using timestamp, other using -SNAPSHOT, and other accept the deployer choosen name.
I've changed my snapshot behaviour to -SNAPSHOT, removed older versions of snapshots from repository (I don't know if this is really necessary), and skinnyWars are now created correctly.
[]'s

Related

How can I solve a conflict when publishing artifacts with classifier to GitHub Packages that share a pom?

tl;dr: I'm trying to solve this issue.
I have a project which builds a platform-dependent JAR and adds a classifier according to the os-maven-plugin:
<modelVersion>4.0.0</modelVersion>
<groupId>com.github.levyfan</groupId>
<artifactId>sentencepiece</artifactId>
<version>0.0.2</version>
<build>
<extensions>
<extension>
<groupId>kr.motd.maven</groupId>
<artifactId>os-maven-plugin</artifactId>
<version>1.6.1</version>
</extension>
</extensions>
<!-- ... -->
<plugins>
<plugin>
<artifactId>maven-jar-plugin</artifactId>
<version>3.1.0</version>
<configuration>
<classifier>${os.detected.classifier}</classifier>
</configuration>
</plugin>
</plugins>
</build>
When I build and publish the artrifact with mvn --batch-mode deploy to GitHub Packages, I'm met with a conflict error. This is because the artifacts share a pom (sentencepiece-0.0.2.pom), but the JAR artifact is determined by the os-maven-plugin value (sentencepiece-0.0.2-XYZ.jar).
How can I inject this plugin-defined property at build-time to create unique artifact names?
Let me have a second try.
The items artifactId and version cannot be influenced by plugin generated properties. To influence them, the property must be given on the command line (or maybe in the POM directly).
So we are left with the classifier.
You need to build all artifacts with classifiers in the same build. So you need to change the build in a way that it builds for the different OS in one go. I don't know whether that is possible (depending on whether you can build e.g. for Windows on Linux) but it seems to be the only "Maven way" solution for you problem.
Of course, you could still try tricks like deleting the POM after you have deployed it, but if possible this should be avoided.

Add external library .jar to Spring boot .jar internal /lib

I have an external .jar that cannot be imported from public repositories using pom.xml, it's sqljdbc41.jar.
I can run the project locally from my IDE, and everything will work. I referenced the library after downloading it like so:
<dependency>
<groupId>com.microsoft.sqlserver</groupId>
<artifactId>sqljdbc41</artifactId>
<version>4.1</version>
<scope>system</scope>
<systemPath>${basedir}/lib/sqljdbc41.jar</systemPath>
</dependency>
When I run mvn clean package to create my .jar file and try to run the created .jar, a mistake will pop up, which mentions the SQL Server references are not valid. I then extracted my .jar file and true enough, everything that is referenced in the pom.xml file properly gets downloaded and added, however, my SQL Server does not.
I can, in a very hacky way* just manually add the sqljdbc41.jar to my /lib folder after it's been compiled as a .jar, and it'll work, however that seems highly unoptimal. What would be a better approach?
*Opening the .jar file with Winrar, going to the /lib folder, manually selecting my sqljdbc41.jar file, then make sure to select the No Compression option bottom left where Winrar gives you compression options, in case you find this by Google and no one answered.
you can set 'includeSystemScope' to true.
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<includeSystemScope>true</includeSystemScope>
</configuration>
</plugin>
You could install the sqljdbc41.jar in your local repository :
mvn install:install-file -Dfile=path/to/sqljdbc41.jar -DgroupId=com.microsoft.sqlserver -DartifactId=sqljdbc41 -Dversion=4.1 -Dpackaging=jar
And then declare the dependency as a standard dependency :
<dependency>
<groupId>com.microsoft.sqlserver</groupId>
<artifactId>sqljdbc41</artifactId>
<version>4.1</version>
</dependency>
If you use a remote artifact repository (nexus, archiva...) you also need to deploy the artifact on this repository. You can find more here : https://maven.apache.org/guides/mini/guide-3rd-party-jars-remote.html
Another way, you can put it into the resources folder, such as resources/lib/xxx.jar, then config the pom.xml like this:
<dependency>
<groupId>com.microsoft.sqlserver</groupId>
<artifactId>sqljdbc41</artifactId>
<version>4.1</version>
<scope>system</scope>
<systemPath>${basedir}/src/main/resources/lib/sqljdbc41.jar</systemPath>
</dependency>
In Spring Boot: I also faced similar issue and below code helped me.
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<version>1.5.7.RELEASE</version>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
</execution>
</executions>
<configuration>
<includeSystemScope>true</includeSystemScope>
</configuration>
</plugin>
</plugins>
</build>
It works for me:
project {root folder}/libs/ojdbc-11.2.0.3.jar
pom.xml:
<dependency>
<groupId>com.oracle</groupId>
<artifactId>ojdbc</artifactId>
<version>11.2.0.3</version>
<scope>system</scope>
<systemPath>${basedir}/libs/ojdbc-11.2.0.3.jar</systemPath>
</dependency>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<includeSystemScope>true</includeSystemScope>
</configuration>
</plugin>
In my case, the fault was providing a version number without "dot" in tag:
<dependency>
<groupId>jdk.tools</groupId>
<artifactId>jdk.tools</artifactId>
<scope>system</scope>
<version>1</version>
<systemPath>${basedir}/src/main/resources/lib/tools.jar</systemPath>
</dependency>
This one works:
<dependency>
<groupId>jdk.tools</groupId>
<artifactId>jdk.tools</artifactId>
<scope>system</scope>
<version>1.8</version>
<systemPath>${basedir}/src/main/resources/lib/tools.jar</systemPath>
</dependency>
When Spring-Boot projects are used with maven or gradle plugins they packaged the applicaiton by default as executable jars.
These executable jars cannot be used as dependency in any another Spring-Boot project because the executable jar add classes in BOOT-INF/classes folder. This means that they cannot be found when the executable jar is used as a dependency because the dependency jar will also have the same class path structure as shown below.
If we want to use project-A as a maven dependency in project-B then we must have two artifacts. To produce the two artifacts, one that can be used as a dependency and one that is executable, a classifier must be specified. This classifier is applied to the name of the executable archive, leaving the default archive for use as a dependency.
To configure a classifier of exec in Maven, you can use the following configuration:
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<classifier>exec</classifier>
</configuration>
</plugin>
</plugins>
</build>
So the MAJIC WORD here is <classifier>exec</classifier> this will create a jar structure as below and then it could easily be conusmed by spring-boot project as maven dependency jar on class path.
The above plugin need to be add in project-A pom that is going to be used as dependency in project-B. Same is explained in spring documentation section 16.5. as well.
In order to work through the local repository, the target .jar file that we will work with must be in the s2 folder. Several methods can be used for this:
The file can be taken manually and put in the relevant place (not
preferred). The same process can be done by installing it via the
console.
Relevant Remote URL is written in the .pom file dependencies and
automatically places it in the s2 folder when Intellij is refreshed
(validate) in the IDE used.
The same process can be done by addressing the .pom file dependencies via the centeral repository.
Attention: ComponentScan should not be forgotten for the related jar work on SpringBot.

how to add external jar to maven webapp project

I have a Spring roo project (basically a maven project). I want to add dropbox sdk to the project, problem is it's not in maven. I added the following files
<dependency>
<groupId>com.dropbox</groupId>
<artifactId>dropbox-sdk</artifactId>
<version>1.3.1</version>
<scope>system</scope>
<systemPath>${project.basedir}/libs/dropbox-java-sdk-1.3.1.jar</systemPath>
</dependency>
It solved the compile error, but when i run the project, in Spring Tool Suite, the jar files are not added to war lib folder. How do I make maven add my external jar files to my the war lib folder?
I don't want to install the jar in maven since, I have to install it in all the machines that uses the project
I finally found a neat solution, which is a lot easier to implement. You add an in-project repository inside the java project and link to it in the pom.
You add an in-project repository in maven like this:
<repository>
<id>in-project</id>
<name>In Project Repo</name>
<url>file://${project.basedir}/libs</url>
</repository>
Then create a folder structure in the root folder of your project that looks something like this
/groupId/artifactId/version/artifactId-version.jar
and add the dependency as you would normally do.
This approach has the least amount of code and work required, and if that library ever gets add into a maven repository you can always remove your in-project repository.
There is a much easier solution, which is set webResource in the plugin. By the solution, you can add any files of your local disk to the war! A sample is as below,
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<configuration>
<warName>api</warName>
<webResources>
<resource>
<directory>libs/</directory>
<targetPath>WEB-INF/lib</targetPath>
<includes>
<include>**/*.jar</include>
</includes>
</resource>
</webResources>
</configuration>
</plugin>
The best way to resolve this issue is to add these local jar files to WEB-INF/lib folder. You will find all these jars packaged in your final war file then.
I don't recommend this approach, but you could add some POM configuration to install the 3rd-party dependency in a separate profile:
<profiles>
<profile>
<id>install-dependencies</id>
<build>
<plugins>
<plugin>
<artifactId>maven-install-plugin</artifactId>
<version>2.3.1</version>
<executions>
<execution>
<id>install-dropbox-sdk</id>
<phase>validate</phase>
<goals>
<goal>install-file</goal>
</goals>
<configuration>
<groupId>com.dropbox</groupId>
<artifactId>dropbox-sdk</artifactId>
<version>1.3.1</version>
<file>src/main/lib/dropbox-java-sdk-1.3.1.jar</file>
<packaging>jar</packaging>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</profile>
<profile>
<id>build</id>
<activation>
<activeByDefault>true</activeByDefault>
</activation>
<dependencies>
<dependency>
<groupId>com.dropbox</groupId>
<artifactId>dropbox-sdk</artifactId>
<version>1.3.1</version>
</dependency>
</dependencies>
</profile>
</profiles>
There are two profiles here: install-dependencies and build. The first installs the dropbox-sdk dependency into your Maven repository and needs to be run once on every machine as follows:
mvn -Pinstall-dependencies validate
The second is enabled by default, and adds the Dropbox SDK as a dependency.
To be honest though, this isn't much better than running
mvn install:install-file -Dfile=src/main/lib/dropbox-java-sdk-1.3.1.jar -DgroupId=com.dropbox -DartifactId=dropbox-sdk -Dversion=1.3.1 -Dpackaging=jar
on every machine.
The other downside of this approach is that you'll have to add all dependencies of the dropbox-sdk to your build as well- whereas if it is done properly by adding the JAR and a POM to a repository server, then Maven will calculate the transitive dependencies properly.
I recommend creating a "third party" repository in a Maven repository server such as Nexus or Artifactory, and uploading the jar to there. Even though that means putting the jar into Maven, at least with a repository server it is available to anyone who will be building your application.
change the lib path to :
src/main/webapp/WEB-INF/lib
in pom.xml:
<systemPath>${project.basedir}/src/main/webapp/WEB-INF/lib/xxxx.jar</systemPath>
The steps described in this site are pretty simple, and they work well enough:
https://mythinkpond.com/2010/10/02/adding-custom-jars-under-web-inflib-in-a-maven-project/
Create a “lib” folder under your project like this: “\src\main\webapp\WEB-INF\lib”
Copy needed “jars” etc that you want included inside your WAR bundle folder.
Invoke your maven build as you normally do. I use “mvn install”, which creates builds the war file.
I know I am really late but I was wondering on why you would not put in the jar in the local repo in the .m2 file and add a reference to the pom from there ?

creating war file using maven-ear-plugin and defining it in one pom.xml

I am at the starter level of the maven usage. I hope I can explain my problem clearly, I want to create an ear file which contains war file inside it. And I planned to use to create a war file from the start. Also I want to do it in my pom.xml at my project and there is only one pom.xml, here is the problem;
Can I create ear file and which contains this war that I created at the same time in one pom.xml file?
when I try to create war file in webmodule tag, here is the problem that I encounter " Artifact[war:denem.denem:denem] is not a dependency of the project." I understood so that's why I added dependency for this file in the same pom.xml but this time I encountered that problem
(By the way my command to build this pom is "mvn clean package" )
"1 required artifact is missing.
for artifact:
com.denem.denem:com.denem.de2:ear:v0.1"
It tries to find this war file but I want to create it not to find it. Here the code in my pom.xml file;
<parent>
<groupId>denem.denem</groupId>
<artifactId>com.denem.denem</artifactId>
<version>v0.1</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<groupId>denem.denem</groupId>
<artifactId>com.denem.de2</artifactId>
<version>v0.1</version>
<packaging>ear</packaging>
<properties>
<cxf.version>2.2.5</cxf.version>
</properties>
<dependencies>
<dependency>
<groupId>denem.denem</groupId>
<artifactId>denem</artifactId>
<version>v0.1</version>
<type>war</type>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-ear-plugin</artifactId>
<version>2.5</version>
<configuration>
<finalName>edu</finalName>
<defaultLibBundleDir>lib</defaultLibBundleDir>
<modules>
<webModule>
<groupId>denem.denem</groupId>
<artifactId>denem</artifactId>
<contextRoot>/WebContent</contextRoot>
</webModule>
</modules>
</configuration>
</plugin>
</plugins>
</build>
I guess I am doing lots of things wrong. But If you can help me I will be glad. Thank you anyway.
You need to create a modular project.
Create:
a parent project of type "pom";
a child project of type "war";
if needed, child projects of type "ejb";
if needed, child projects of type "jar" (common libraries);
one project of type "ear", that has all of the above as dependencies.
In the latter you need to configure the ear plugin putting all the modules that you need.

Maven WAR dependency

I am writing a project for acceptance testing and for various reasons this is dependent on another project which is packaged as a WAR. I have managed to unpack the WAR using the maven-dependency-plugin, but I cannot get my project to include the unpacked WEB-INF/lib/*.jar and WEB-INF/classes/* to be included on the classpath so the build fails. Is there a way to include these files into the classpath, or is there a better way of depending on a WAR?
Many thanks.
There's another option since maven-war-plugin 2.1-alpha-2. In your WAR project:
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>2.1.1</version>
<configuration>
<attachClasses>true</attachClasses>
</configuration>
</plugin>
This creates a classes artifact which you can use in the acceptance tests project with:
<dependency>
<groupId>your-group-id</groupId>
<artifactId>your-artifact-id</artifactId>
<version>your-version</version>
<classifier>classes</classifier>
</dependency>
Indeed, by design, Maven doesn't resolve transitive dependencies of a war declared as dependency of a project. There is actually an issue about that, MNG-1991, but it won't be solved in Maven 2.x and I'm not sure that I don't know if overlays allow to workaround this issue. My understanding of the suggested solution is to duplicate the dependencies, for example in a project of type pom.
(EDIT: After some more digging, I found something interesting in this thread that I'm quoting below:
I have been helping out with the development of the AppFuse project over
the last month where we make heavy use of the war overlay feature in the
Maven war plugin. It is a really nifty feature!
To get max power with war overlays I have developed the Warpath plugin
that allows projects to use war artifacts as fully fledged dependencies.
In brief:
1) The contents of the /WEB-INF/classes directory in the war dependency
artifacts can be included in the project's classpath for normal compile,
etc tasks.
2) Transitive dependencies from the war dependency artifacts become
available for use by other plugins, e.g. compile and ear - so no more
having to include all the dependencies when creating skinny wars!
The plugin has now been actively used in the AppFuse project for the
last few months, and I feel it is at a point where it is both usable and
stable.
Would the war plugin team be interested in including the warpath
functionality inside the war plugin? It would seem to be the most
natural place to host it.
So, I don't have any experience with it, but the maven warpath plugin actually looks nice and simple and is available in the central repo. To use it,include the following plugin configuration element in your pom.xml file:
[...]
<build>
<plugins>
<plugin>
<groupId>org.appfuse</groupId>
<artifactId>maven-warpath-plugin</artifactId>
<version>1.0-SNAPSHOT</version>
<extensions>true</extensions>
<executions>
<execution>
<goals>
<goal>add-classes</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
[...]
And add the war dependencies you want included in the classpath as warpath type dependencies:
[...]
<dependencies>
<dependency>
<groupId>org.appfuse</groupId>
<artifactId>appfuse-web</artifactId>
<version>2.0</version>
<type>war</type>
</dependency>
<dependency>
<groupId>org.appfuse</groupId>
<artifactId>appfuse-web</artifactId>
<version>2.0</version>
<type>warpath</type>
</dependency>
</dependencies>
[...]
Both the war and warpath dependency types are needed: the war type is used by the Maven war plugin to do the war overlay, the warpath type is used by the Warpath plugin to determine the correct list of artifacts for inclusion in the project classpath.
I'd give it a try.)
Use overlays. First, your test project need to have also packaging war.
Declare dependency of war project you want to test:
<dependency>
<groupId>${project.groupId}</groupId>
<artifactId>your-project-arftifactId</artifactId>
<version>${project.version}</version>
<type>war</type>
<scope>test</scope>
</dependency>
then configure maven-war-plugin overlay:
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<configuration>
<webResources>
<resource>
<directory>${basedir}/src/main/webresources</directory>
<filtering>true</filtering>
</resource>
</webResources>
<overlays>
<overlay/>
<overlay>
<groupId>your.group</groupId>
<artifactId>your-project-artifactId</artifactId>
</overlay>
</overlays>
</configuration>
</plugin>
In the above example in test project I overwrite webresources configuration files (like conxtext etc.).
EDIT: This solution wasn't tested with Maven 3.
Good point, Justin. That got me actually solving my problem, namely: including a war into an assembly AND including all its transitive dependencies.
I could not duplicate the war-dependency as 'jar' as you suggested since the assembly plugin would not find a jar referenced by that groupId/artefactId, but
duplicating the war-dependency as type pom
works!
The war and its transitive dependencies are not included in the assembly.
To exclude the (now also appearing) pom file I had to add an exclude element like this:
<excludes>
<exclude>*:pom</exclude>
</excludes>
into my assembly.xml file.
I think this could also be a workaround for the original question of this thread.
If you list the dependency on the war project as a jar dependency it seems to pickup the required jars/resources. I'm using Maven 2.2 + m2eclipse.

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