I'm using Eclipse and I have Maven project with jar and war modules. I exported it to my github acc. and when I import it from Git it runs correctly but something is not like i wanted to. In my Parent module i have all the files, but situation changes in my jars and war module.
For example in src folder i have two folders, java and webapp, in war called "psy-webapp" java is missing. I read something about it, and i must change the path to let maven see all folders/files right? I'm also sending link to github project and a screenshot to see what i mean.
Github:https://github.com/jakubjaroszek/ltc
screenshot
Related
I created the java class and converted into jar files. So, I want to use those jar files which I have placed in project level in some folder like "External Jar".
So I need to write a dependency in maven that when someone imports my project they should be able to run the program.
Basically you created your own jar and you want to publish this jar, so that when somebody else clone/use your project, this jar comes with (assuming that you have a maven project and dependency of your jar is included in pom.xml).
To achieve this, you need to publish your jar to maven , you can follow many of the online docs like http://kirang89.github.io/blog/2013/01/20/uploading-your-jar-to-maven-central/ on how to publish jar to maven central.
Edit:- As suggested by khmarbaise, please use official reference http://central.sonatype.org/ for central repository.
We have a Java project that was modified about 2 years ago based on the dates.
The project uses a the Play Framework which as I recalled built and ran just fine back in 2012.
The developer apparently had tried to change the project to be a Maven project but the folder structure is all over the place and not within the Maven src folder structure.
Attempting to run the Play commands does not work on building the project any longer and using the Maven commands does not compile the code.
What occurs is just the packaging of all of the folders and source code into a .jar file.
So the question is 'Can files outside of the Maven folder structure get compiled?' if so how, OR do I need to restructure all the code to be placed into the proper Maven folder structure to try and get this to work again?
Thanks for your time.
Rough view of the folder tree below: Unable to post the POM as it is on another system
Project Name
src
main/java/
trunk
Project Name
... play framework folder structure in here eclipse, modules, precompiled, tmp
conf
lib
Web Content
META-INF
WEB-INF
Yes you can compile files in a non-standard Maven folder structure. Maven natively supports multiple source directories for the purposes of generated sources.
Read the Maven use guide When You Can't Use the Conventions
Using Multiple Source Directories This occurs when you are producing a
single JAR (or other artifact), and have several source directories
with classes you want to include.
This answer shows how to edit the directory structure in Maven by specifying the appropriate properties to override from the superpom.
The Maven pom docs show the build element set mentioned in the link above.
As a side note this answer covers a non standard directory layout for building war.
I have compiled sources of java web application. I know that project uses maven, because there is pom.xml files inside .war file.
I want to know is it possible to re create maven project using .war file. I use Java Decompiler to get sources, but i do not know how to combine all folders and .java files as it was in original project.
Is there any tool or howto to do it automaticaly?
Here is sources directory tree structure
For information: I do not want to stole some project or code, it's just my work. There is some web app in our production that was done by other developers in 2007. Now we are supporting this projects, and i don't know why customers do not have sources.
Create a new project from scratch as explained in Maven - Guide to Webapps. Then find the src/main/java directory and create a directory structure that reflects packages of classes in the war. Move the resources to resources folder. Use the command mvn package to recreate the war.
You can follow following steps. If your pom.xml is proper
Create a folder say, project
Copy your source code files with package structure intact to project folder( Note: if subfolder should src /project/src .
Copy pom.xml
In eclipse File->Import->select Maven-> Existing maven projects-> select the folder(project)-> Follow the instruction
I've got a Java project hosted on github. My project needs few custom .jar files to be imported. Since I was to be able to run the project anywhere, I want to include jar files inside the git repository. Is there a recommended, conventional place where jar files should be kept, e.g. lib dir of the root project directory?
PS
At the moment I'm not using Maven and I'm not considering it.
The usual case is actually a lib folder. Or webapp/WEB-INF/lib it is a web application.
But ths usual case is bad. I would not put jars in my source management system. If you need to add references to another project, you might consider having a look a git submodules (though you are using Github).
I have a maven pom file for an open source project. This pom file has all the info like what other jars it depends on etc. I installed maven. Created a dir samprj and copied the pom file into that dir. Cd into that dir and ran mvn command without any arguments but I got bunch of errors. I am absolutely new to maven so I think I am missing something. I tried also from Eclipse ( Import project -- exisitng maven project) but that also does not work except eclipse creates a project that has just that file pom.xml. I expect something that first it will download the jar for the project and then download all dependent jars and config files but nothing there.
So given a pom file how do I build the project from it?
mvn install should get you going
I have a maven pom file for an open source project. This pom file has all the info like what other jars it depends on etc. I installed maven. Created a dir samprj and copied the pom file into that dir ...
It sounds like you only have the project's POM file. This is not sufficient. You need to checkout the complete source tree for the project. Having done that, change directory to the directory containing the POM file and run mvn install.
Also, don't copy the POM to a different directory. Maven expects to find all of the source files relative to the POM file location.
FOLLOW UP
Thanks for advice. I was not able to use the command mvn install as it gave errors.
Probably because you hadn't checked out the source.
I don't know how to check the source tree of the project ...
Use a subversion client (the svn command for example), or one of the Eclipse subversion plugins.
If this was a properly documented project, there would be clear instructions on what version control and build tools you needed, how to checkout the source code and how to build it.
... as I thought POM itself should have this information to automatically checkout if the source is not check out.
It doesn't necessarily, though in this particular case it does.
Anyway I was able use Eclipse to build the project without errors.
(Other readers can read #icyrock.com's answer for links to the m2eclipse plugin and documentation.)
The only problem is the dependent jars were downloaded but hidden deep paths in .m2 repository folder on my linux box.
But I would like these dependent jars to be relative to dir where POM file is.
Sorry, but that is not the way Maven works.
The ~/.m2/repository directory is a fundamental part of Maven. It is not a problem. It is a feature. (Don't fight it!)
If you want to open this within Eclipse, you need to install m2eclipse:
http://www.eclipse.org/m2e/
and then import the project as a Maven project as described here:
http://books.sonatype.com/m2eclipse-book/reference/creating-sect-importing-projects.html
Try out their getting started guide. It has a lot of good examples:
http://maven.apache.org/guides/getting-started/