I have created two maven projects. Below are pom files of both projects;
core-library -
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.demo</groupId>
<artifactId>core-library</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>Core</name>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.reflections</groupId>
<artifactId>reflections</artifactId>
<version>0.9.12</version>
<scope>compile</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>org.reflections</groupId>
<artifactId>reflections</artifactId>
</dependency>
</dependencies>
</project>
utility-library -
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.demo</groupId>
<artifactId>utility-library</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>Utility</name>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>com.demo</groupId>
<artifactId>core-library</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>com.demo</groupId>
<artifactId>core-library</artifactId>
</dependency>
</dependencies>
</project>
Now the core-library have some external dependencies e.g. org.reflections:reflections etc. So my expectation is when I add core-library to the utility-library, these external dependencies should automatically get added to dependency tree of utility-library.
But in actual, these nested dependencies are not getting included in dependency tree of utility-library.
Below is the output when I run mvn dependency:tree on utility-library
--- maven-dependency-plugin:2.8:tree (default-cli) # utility-library ---
[INFO] com.demo:utility-library:jar:0.0.1-SNAPSHOT
[INFO] +- com.demo:core-library:jar:0.0.1-SNAPSHOT:compile
INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
I tried solution from this stack overflow question, but the problem is not solved yet.
Can someone please help me with this?
P.S. - I have to achieve this nested dependency inclusion without creating a fat/shaded/uber jar as it increses the actual jar size and I also want to further use utility-library as a maven dependency in other project.
UPDATE:
When I tried building utility-library with -X (enable debug logs) flag, I got following errors,
[WARNING] The POM for com.demo:core-library:jar:0.0.1-SNAPSHOT is invalid, transitive dependencies (if any) will not be available: 3 problems were encountered while building the effective model for com.demo:core-library:0.0.1-SNAPSHOT
[ERROR] Invalid packaging for parent POM com.demo:core-library:0.0.1-SNAPSHOT, must be "pom" but is "jar" #
[ERROR] Invalid packaging for parent POMcom.demo:core-library:0.0.1-SNAPSHOT, must be "pom" but is "jar" #
[FATAL] The parents form a cycle: com.demo:core-library:0.0.1-SNAPSHOT -> com.demo:core-library:0.0.1-SNAPSHOT #
Your POMs look correct.
reflections is a transitive dependency that should be drawn automatically by Maven.
If you cannot see it, have a look at mvn dependency:tree. It should be listed there.
Maybe your IDE is showing nonsense.
Related
I've generated a spring boot project using the Initialzr tool. I've following allow this tutorial to the point where I've added a template and controller:
https://www.baeldung.com/spring-boot-start
Now I'm just trying to run mvn clean package but just seeing the following error in my command prompt:
...
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.501 s
[INFO] Finished at: 2019-06-17T11:03:12+01:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile (default-compile) on project myapp: Fatal error compiling: invalid flag: -parameters -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
I've tried Googling some of the errors here as usually I can fix the issues but not really anything too informative here for me to grasp.
Below is my pom.xml file too encase there lies the problem:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.5.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>myapp</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<name>My App</name>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
For me, the problem was that maven was using a different version of Java than the project.
After I changed it so that both maven and project are using the same versions of Java, everything worked fine.
The discrepancy in my case was that the project was on java 1.8 and maven was using java 1.7.
I changed the maven version of java directly since I needed to have an older version of Java set in Java Home. For that, I referred to this topic: How to set specific java version to Maven
I hope that this helps.
In my case I did this:
In pom.xml added the following lines:
<properties>
<java.version>1.8</java.version>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
</properties>
Go to the properties of the proyect -> Java Build Path -> Libraries
Checked that the "JRE System Library[]" was using "JavaSE-1.8 (jre1.8.0_221) as JRE.
Selected "JRE System Library" -> Click on "Edit..."
Ticked the option "Alternate JRE:" and selected "jdk1.8.0_221".
Saved everything, executed "Maven Clean" in the project and Installed Maven in the project.
After Eclipse downloaded the repositories of Maven, the build was successful.
I have a multi module maven project with three different modules Module-Data, Module-Domain, Module-Web. All three projects are spring boot projects, however Module-Web is the web component of the project that handles everything web oriented which I want to build a war file for. I have a parent project with the following pom file which contains no code.
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.somename</groupId>
<artifactId>My-Project</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>pom</packaging>
<modules>
<module>module-data</module>
<module>module-domain</module>
<module>modele-web</module>
</modules>
Module-Domain depends on Module-Data and Module-Web depends on both Module-Data and Module-Domain. The problem I'm having is that when I try to build the project using maven it fails when building the Module-Domain with the following erros:
package com.somename.data.model does not exist // class file with this error
Module-Domain class files that imports from the Module-Data project fails with this error. I suspect this is because maven is not adding the Module-Data jar to the Module-Domain when building although its referenced in its pom file. How can I solve this problem and generate a war file with all dependencies?
Module-Domain pom.xml:
<dependency>
<groupId>com.somename.data</groupId>
<artifactId>module-data</artifactId>
<version>0.0.1-SNAPSHOT</version>
<scope>compile</scope>
</dependency>
Module-Web pom.xml
<dependency>
<groupId>com.somename.data</groupId>
<artifactId>module-data</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>com.somename.domain</groupId>
<artifactId>module-domain</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
This is a simple straight-forward approach that you are using. Should not cause a problem.
Module-Domain pom.xml:
<parent>
<groupId>com.somename</groupId>
<artifactId>My-Project</artifactId>
<version>1.0-SNAPSHOT</version>
</parent>
<dependencies>
<dependency>
<groupId>com.somename.data</groupId>
<artifactId>module-data</artifactId>
<version>0.0.1-SNAPSHOT</version> <!-- Make sure this version is correct -->
</dependency>
</dependencies>
Module-Web pom.xml:
<parent>
<groupId>com.somename</groupId>
<artifactId>My-Project</artifactId>
<version>1.0-SNAPSHOT</version>
</parent>
<dependencies>
<dependency>
<groupId>com.somename.domain</groupId>
<artifactId>module-domain</artifactId> <!-- pulls "module-data" as well : transitive dependency -->
<version>0.0.1-SNAPSHOT</version> <!-- Make sure this version is correct -->
</dependency>
</dependencies>
Do maven clean compile on the parent project that would build all the modules.
If you still see any compilation issues, you would need fix the source code.
So here is the scenario.
I have a maven project for which I am using some(7) jars for unit testing. All these jars are present on maven remote/local(.m2) repository. and I have to add them individually as dependency.
I want to create a pom (parent) which contain these jars as dependency so that if I include this pom(parent) as dependency, all 7 dependencies are automatically resolved.
I tried this code but i think there are some issues with packaging type. (pom packaging didn't work either).
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>some.package</groupId>
<artifactId>full-PACK</artifactId>
<version>1.1</version>
<packaging>jar</packaging>
<dependencies>
<dependency>
<groupId>org.javassist</groupId>
<artifactId>javassist</artifactId>
<version>3.21.0</version>
<scope>test</scope>
</dependency>
<!-- 6 more similar dependencies -->
</dependencies>
</project>
I want this pom to just act as pointer, and this should resolve dependencies in their respective packages not in package of this pom. I don't want to create a fat jar for this pom.
Is there a way in which I can use this pom as kind of pointer so that it just tells project to import those 7 jars?
I have not tested it, but following the Maven logic, this should work:
Create a project with packaging pom that references the 7 jars as compile dependencies:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>some.package</groupId>
<artifactId>full-PACK</artifactId>
<version>1.1</version>
<packaging>pom</packaging>
<dependencies>
<dependency>
<groupId>org.javassist</groupId>
<artifactId>javassist</artifactId>
<version>3.21.0</version>
<scope>compile</scope>
</dependency>
<!-- 6 more similar dependencies -->
</dependencies>
</project>
Now declare a test dependency on this pom in your project like
<dependency>
<groupId>some.package</groupId>
<artifactId>full-PACK</artifactId>
<version>1.1</version>
<type>pom</type>
<scope>test</scope>
</dependency>
Your approach failed because test dependencies are not transitive. Have a look at the table on
https://maven.apache.org/guides/introduction/introduction-to-dependency-mechanism.html
I can't seem to get Maven to find a sibling's module in a multi-module project.
I've run mvn clean install in all modules.
Here's the setup:
Product
+-- MagniCompCommon
+-- Model
The Model project has MagniCompCommon as a dependency. When I run mvn clean compile in Model, I get:
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building Model 1.0
[INFO] ------------------------------------------------------------------------
[WARNING] The POM for com.magnicomp:MagniCompCommon:jar:1.0 is missing, no dependency information available
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.585 s
[INFO] Finished at: 2015-10-14T10:09:04-07:00
[INFO] Final Memory: 5M/15M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal on project Model: Could not resolve dependencies for project com.magnicomp:Model:jar:1.0: Failure to find com.magnicomp:MagniCompCommon:jar:1.0 in http://download.java.net/maven/2/ was cached in the local repository, resolution will not be reattempted until the update interval of Java.Net has elapsed or updates are forced -> [Help 1]
As you can see, Maven is trying to find MagniCompCommon in the java.net repo (this is the first repository entry in the parent (Product) pom.xml).
Here is Product pom.xml:
<?xml version="1.0"?>
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<modelVersion>4.0.0</modelVersion>
<groupId>com.magnicomp</groupId>
<artifactId>Product</artifactId>
<version>1.0</version>
<packaging>pom</packaging>
<modules>
<module>MagniCompCommon</module>
<module>Model</module>
<module>Common</module>
<module>Agent</module>
<module>Doc</module>
</modules>
... snip ...
<repositories>
<repository>
<id>Java.Net</id>
<url>http://download.java.net/maven/2/</url>
</repository>
Here is MagniCompCommon pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>com.magnicomp</groupId>
<artifactId>Product</artifactId>
<version>1.0</version>
</parent>
<!-- <groupId>com.magnicomp.common</groupId> -->
<artifactId>MagniCompCommon</artifactId>
<packaging>jar</packaging>
Here is Model pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>com.magnicomp</groupId>
<artifactId>Product</artifactId>
<version>1.0</version>
</parent>
<artifactId>Model</artifactId>
<packaging>jar</packaging>
<dependencies>
<dependency>
<groupId>com.magnicomp</groupId>
<artifactId>MagniCompCommon</artifactId>
<version>1.0</version>
</dependency>
</dependencies>
</project>
When you are building a multi-module Maven project, you need to run Maven commands from the root POM. This means you need to run mvn clean install on Product's pom.xml.
The error you are getting is expected: you are only building Model. In Model's POM, Maven sees that there is a dependency on MagniCompCommon so it tries to look for that dependency. First, it searches in your local repo: it fails to find it there since you did not install MagniCompCommon before. As a result, it looks for it in the predefined remote repositories (and also fails to find it).
You would be able to circumvent this by first running mvn clean install on MagniCompCommon's POM, then on Model POM but this is much easier done by invoking Maven directly on the root POM. It will correctly build every modules in the right order (since Model depends on MagniCompCommon, it will build MagniCompCommon first, then Model).
As a side note, you can remove the line <packaging>jar</packaging> because this is the default.
I noticed MagniCompCommon pom doesnt specify a version
<!-- <groupId>com.magnicomp.common</groupId> -->
<artifactId>MagniCompCommon</artifactId>
<packaging>jar</packaging>
And in Product pom, you're referencing version 1.0
<dependency>
<groupId>com.magnicomp</groupId>
<artifactId>MagniCompCommon</artifactId>
<version>1.0</version>
</dependency>
Have you tried specifying version 1.0 in MagniCompCommon pom?
Hi Please help me to resolve this below issue I am new to java, I having POM.xml in my project which showing below error even after I am done the below mentioned steps.
Steps I tried from my side is
Deleted all cache file from maven repository
Updated project via Maven, still I am not able to resolve this issue
Error message is like
Plugin execution not covered by lifecycle configuration: org.apache.maven.plugins:maven- compiler-plugin:2.3.2:testCompile (execution: default-testCompile, phase: test-compile)
My POM.xml is
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>csp</groupId>
<artifactId>CustomerFileTransfer</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>CustomerFileTransferApp</name>
<dependencies>
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.4</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>3.1.0.RELEASE</version>
</dependency>
</dependencies>
</project>
Please let me know what am missing to do..