Had to reinstall eclipse the other day, and moved it from one folder to another.. not sure if its relevant but I am getting an error when trying to run one of my projects - this is a new project I have never run successfully before. I have also tried copying the code to a newly built project but still no luck.
An internal error occurred during: "Launching Main (14)".
Container path cannot be null
Other projects are running fine.
Not sure if this is relevant but pom.xml below:
<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>GmailTest2</groupId>
<artifactId>GmailTest2</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<name>GmailTest2</name>
<build>
<sourceDirectory>src</sourceDirectory>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.3</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>2.6</version>
<configuration>
<warSourceDirectory>WebContent</warSourceDirectory>
<failOnMissingWebXml>false</failOnMissingWebXml>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>com.google.api.client</groupId>
<artifactId>google-api-client-http</artifactId>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>com.google.api.client</groupId>
<artifactId>google-api-client-http</artifactId>
<version>1.2.3-alpha</version>
</dependency>
</dependencies>
</dependencyManagement>
</project>enter code here
Related
I have the following code.
I am trying to create a 'pom.xml' file for a bukkit plugin (Minecraft) using Maven.
However, this gives me the error: 'The POM for org.apache.maven.plugins:maven-compiler-plugin:jar:3.8.6 is missing'.
I have tried to trouble shoot a few different solutions but haven't been successful in any.
I would be so grateful for a helping hand!
<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>newestfile.here</groupId>
<artifactId>newestplugin</artifactId>
<version>0.0.1-SNAPSHOT</version>
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.6</version>
<configuration>
<source>19</source>
<target>19</target>
</configuration>
</plugin>
</plugins>
</pluginManagement>
The source and target look wrong, are you sure they shouldn't be 1.8? That is the only number I see listed. Double check that and try running mvn compile and see if that didn't fix it.
I changed the version to 3.10.1 and the target to 17 as follows, and the code successfully ran:
<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>newestfile.here</groupId>
<artifactId>newestplugin</artifactId>
<version>0.0.1-SNAPSHOT</version>
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.10.1</version>
<configuration>
<source>17</source>
<target>17</target>
</configuration>
</plugin>
</plugins>
</pluginManagement>
</build>
<repositories>
<repository>
<id>spigot-repo</id>
<url>https://hub.spigotmc.org/nexus/content/repositories/public/</url>
</repository>
</repositories>
<dependencies>
<dependency>
<groupId>org.spigotmc</groupId>
<artifactId>spigot-api</artifactId>
<version>1.16.5-R0.1-SNAPSHOT</version><!--change this value depending on the version or use LATEST-->
<type>jar</type>
<scope>provided</scope>
</dependency>
</dependencies>
</project>
Thanks so much for all your help!
maven-compiler-plugin doesn't have 3.8.6 version. You need to choose some other version. Here is the available version list https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-compiler-plugin.
I'm not a very experienced Java user in terms of compilation with maven, eclipse, etc...
I'm trying to build a small proyect with some maven dependencies, and my idea is to include all the dependencies in the ganarated Jar.
This is the content of my 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>
<groupId>amgrd</groupId>
<artifactId>testFlink</artifactId>
<packaging>jar</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>testFlink</name>
<description>testFlink</description>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<flink.version>0.10.0</flink.version>
<jdk.version>1.8</jdk.version>
</properties>
<dependencies>
<dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-java</artifactId>
<version>${flink.version}</version>
</dependency>
<dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-streaming-java</artifactId>
<version>${flink.version}</version>
</dependency>
<dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-clients</artifactId>
<version>${flink.version}</version>
</dependency>
<dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-connector-kafka_2.11</artifactId>
<version>0.10.0</version>
</dependency>
</dependencies>
<build>
<sourceDirectory>${project.basedir}/src/main/java</sourceDirectory>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<configuration>
<archive>
<manifestEntries>
<Main-Class>StreamingWordCount</Main-Class>
</manifestEntries>
</archive>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>${jdk.version}</source>
<target>${jdk.version}</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
I splitted it on three parts to remark the piece of XML that should be configuring the project to include the jars in the generated file.
Then I show the context menu of the project and click on Run as... -> Maven --> And I type the target "package".
The generated jar does not contain dependencies, only pom.xml, manifest and my source code classes.
Thank you in advance
There should be two jars in your target directory after you build. One that only contains your classes, and one with all the classes. The latter has the suffix jar-with-dependencies.jar.
Is there a way in which we import dependency in the pom for a maven project. Then when we package it and run the jar, the Main() method is provided by the dependency we imported and not in the project we are developing ourselves.
Is there a possibility of doing it? Basically, the dependency would load the project developed by me from the classpath and consume some of the interfaces implemented by me, known to it.
I haven't tried it, but you may be able to simply specify the main class in the manifest using maven-jar-plugin, like so:
<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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.maventest</groupId>
<artifactId>aproject</artifactId>
<packaging>jar</packaging>
<version>1.0-SNAPSHOT</version>
<name>aproject</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<configuration>
<archive>
<manifest>
<mainClass>com.maventest.App</mainClass>
</manifest>
</archive>
</configuration>
</plugin>
</plugins>
</build>
</project>
If that doesn't work you could always provide your own class that imports and calls the main method from the desired class.
Can you try this:
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<dependencies>
<dependency>
<!-- Dependency which includes the main class -->
</dependency>
</dependencies>
<configuration>
<mainClass>absolute.name.MainClass</mainClass>
</configuration>
</plugin>
</plugins>
i have following war project:
<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>
...
<properties>
<failOnMissingWebXml>false</failOnMissingWebXml>
</properties>
<dependencies>
...
<dependency>
<groupId>com.sixgroup.rdx.common</groupId>
<artifactId>rdx-common-web</artifactId>
<type>war</type>
</dependency>
<dependency>
<groupId>com.sixgroup.rdx.common</groupId>
<artifactId>rdx-common-web</artifactId>
<version>${rdx-common.version}</version>
<type>jar</type>
<classifier>classes</classifier>
</dependency>
...
</dependencies>
<build>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<!-- <version>3.3</version> -->
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.1.1</version>
<configuration>
<overlays>
<overlay>
<groupId>com.sixgroup.rdx.common</groupId>
<artifactId>rdx-common-web</artifactId>
<exludes>
<exclude>WEB-INF/lib/*.jar</exclude>
<exclude>WEB-INF/classes/**/*.class</exclude>
</exludes>
</overlay>
</overlays>
</configuration>
</plugin>
<plugin>
<groupId>pl.project13.maven</groupId>
<artifactId>git-commit-id-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
this generates a beautiful war with the common-web .xhtml Files in the root dir and the classes of the common-web as jar in the web-inf/lib folder.
But now when i build the ear, the overlay of this war is ignored, so the excludes don't work and because of this i get an error when deploying (A component named 'FooBar' is already defined in this module)
This is the webModule in my ear-pom:
<webModule>
<groupId>${project.groupId}</groupId>
<artifactId>rdp-pricedata-web</artifactId>
<bundleFileName>rdp-pricedata-web.war</bundleFileName>
<unpack>true</unpack>
</webModule>
is there a way to force the ear to accept the overlay in the war?
I have found this solution on stackoverflow. Warning - Build path specifies execution environment J2SE-1.4
I am getting almost the same problem but instead of 1-4 i am having 1-6. Unfortunately I don't really understand this configuration thing. It's new thing to me. I am trying second answer to get this working. I found this pom.xml in src under my project and it's xml looks like this:
<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>eu.jpereira.trainings.designpatterns.creational.singleton</groupId>
<artifactId>singleton</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<name>singleton</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.9</version>
<scope>test</scope>
</dependency>
</dependencies>
<!-- Configure Build Process -->
<build>
<plugins>
<!-- Compiler plugin to use Java 1.6 compatiblity -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3.2</version>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
<!-- Eclipse plugin to force download of source and JavaDoc jars -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-eclipse-plugin</artifactId>
<version>2.8</version>
<configuration>
<wtpversion>2.0</wtpversion>
<downloadSources>true</downloadSources>
<downloadJavadocs>true</downloadJavadocs>
</configuration>
</plugin>
</plugins>
</build>
</project>
What and where should I add sth? I am using Eclipse on Windows 7. My version of java is: 1.8.0.25-b18 Words like plugin and Maven and JUnit are highlighted red. I would be grateful for help!
Try
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3.2</version>
<configuration>
<source>1.4</source>
<target>1.4</target>
</configuration>
</plugin>
And then regenerate the Eclipse project with mvn eclipse:eclipse.