I'm trying to develop a maven workflow guide for myself and I have gone so far to Install Maven, setup a Maven project, compile, package and run the jar file. Now I wish to add a dependency to the project.
After adding the dependency to the pom.xml I compile , package and run the jar, I get an error:
Exception in thread "main" java.lang.NoClassDefFoundError: org/joda/time/DateTime
I still don' t understand this part of the process. I also tried mvn install and also don' t get where the the dependency files go? Can someone please point me in the right direction?
Source: my test project (so far)
Related
I have two Maven Modules loaded in the same IntelliJ project. One module has a dependency on the other one. If I change the version of it, then my second module can't resolve the dependency anymore, except I explicitly run a mvn install first.
Can IntelliJ not resolve Maven dependencies from source modules when modules are loaded within the same project?
Sorry, I'm stupid, with correctly group and artifact ids .... works much better !
I am working on open source maven project that use several mining dependencies.
after write this command into component mvn clean install I got ERROR in pom.xml file,enter code here that version of spmf is wrong.
<groupId>ca.pfv</groupId>
<artifactId>spmf</artifactId>
<version>2.33</version> // !!!
full error:
omponents-spmanalysis: Could not resolve dependencies for project
info.collide:components-spmanalysis:jar:2.0.0-SNAPSHOT: Failure to
find ca.pfv:spmf:jar:2.33
I tried to use different versions but same error at maven install.
Background:
I am developing Maven multi module project.
One of the module is common module needed by other all modules.
This module contain CommonClassA.java.
common module is properly compiled.
It is installed into maven local repository properly.
One of the class(Billtype.java) in other module (EmployeeBilling) refers this class(CommonClassA.java).
Maven Dependency for common module is properly specified in pom.xml of EmployeeBilling module.
Problem:
While compiling EmployeeBilling module it throws
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.3.2:compile (default-compile) on project EmployeeBilling: Compilation failure
[ERROR] \MyWorkspace\Biz\EmployeeBilling\src\main\java\com\employee\Billtype.java:[79,19] error: cannot access CommonClassA
[ERROR] -> [Help 1]**
Supporting details:
dependency defined in EmployeeBilling> pom.xml:
Other classes from common module seems accessible as no error observed
There are no other errors like Class not found/file not found.
The class CommonCLassA implements Serializable
Same error occurs from Eclipse as well as commond line
I am using M2E plugin
Tools:
jdk1.7.0_02
OS: Windows 7
Eclipse JUNO and apache-maven-3.1.0
Thanks in advance!
If project builds properly using eclipse compiler then it should work with Maven.
Few things to check if its not working with maven:
Manually check in repository that jar is installed properly and it contains your class file.
Try to build project using locally installed Maven instead of maven in eclipse.
Set -DskipTest=true while installing your jar, as it can cause issues at times.
If these steps don't work then show us your pom.
With no more information it's hard to find the cause. But I also had this problems now and then, and there are some things which could go wrong:
Are you using the right JAVA version (everywhere) ?
... and the right java PROVIDER? (Oracle, IBM, OpenJDK) In my case it's often this issue, I'm sometimes bound to IBM JDK, although I try to use Oracle where I can and this sometimes breaks my build.
Is the right maven dependency VERSION used? If you depend on it multiple times, and all in the same (lower than root) dept of dependencies, Maven will just "choose" a version. It could be that thát version is incompatible with your code of thát particular dependency
Skipping tests sometimes WORKS! It has something to do with maven phases and getting stuff ready for using it elsewhere.
Good luck :)
I had the same problem. Even the jar dependency has the required class files. Finally I deleted the local maven repo and restarted the build. Now it worked without any issue.
It looks like you are using an old version of maven-compiler-plugin (v2.3.2).
I suggest you upgrade it to 3.x. it won't magically fix your issue but it will definitely give you better / more detailed error message.
Can someone let me know how to fix the same?.I tried to create a new maven project and it fails for some reason
Description Resource Path Location Type
Execution default-resources of goal org.apache.maven.plugins:maven-resources-plugin:2.5:resources failed: A required class was missing while executing org.apache.maven.plugins:maven-resources-plugin:2.5:resources: Lorg/sonatype/plexus/build/incremental/BuildContext;
Have updated the maven-resource-plugin to version 2.6. It works fine with M2Eclipse integration v1.3 milestone.
My experience with eclipse and maven is not good I have been working for a long time with both and they don't integrate properly. The best way to make them work together for me was to use command line to build, package and install the projects and eclipse to edit.
To import the projects into eclipse I just use mvn eclipse:eclipse and it will generate the files needed to import the project into eclipse.
I'm pretty new to troubleshooting Maven problems and need some direction. My project is in eclipse and I'm using the m2eclipse plugin. When i import my project to eclipse all dependencies are resolved and its business as usual. However when i deploy to one of my shared environments the mvn deploy is failing due to "package ... does not exist" exception on some Spring components. I'm also seeing alot of "cannot find symbol" issues.
The first thing i checked was the Settings.xml file I used locally against what the shared environment is using and they are the same.
Any suggestions on what else could be causing the deploy to fail? BTW my POM uses teh repositories tag to specify an additional repository however this doesnt seem to be having any affect on the failing deploy.
Thanks,
org.apache.maven.BuildFailureException: Compilation failure
Caused by: org.apache.maven.plugin.CompilationFailureException: Compilation failure
at org.apache.maven.plugin.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:516)
Most likely your dependencies are using the wrong scope, which causes the libraries not be be included in e.g. the output war file.
As a first step I would confirm that your build passes on the command line and maybe share your pom file here.