We Keep Coding

Not able to upload artifacts to Nexus from the same machine using mvn clean deploy, works fine from my local Windows 10 machine

Java 11
I have a very basic Spring Boot application that I would like to build and deploy the artifacts on a Nexus sever.
mvn clean deploy (from my local Win 10 machine - WORKS !!!)
mvn clean deploy (from Nexus machine - FAILS ????)
mvn clean deploy (from Jenkins - FAILS ????)
When I run mvn clean deploy command from my local Win 10 machine all the artifacts get deployed successfully on remote Nexus server and I can even see and browse them.
But when I clone the project and run mvn clean deploy on the very same machine where both Nexus and Jenkins (Ubuntu box) are installed it gives me Not authorized error.
I have already copied over BOTH settings.xml and settings-security.xml from my local Windows machine to Ubuntu (~/.m2) where Nexus is installed.
I have disabled the firewalls as well just to be sure that no ports are blocked.
I am confused how the artifacts are getting copied over from a remote machine but not from the same machine.
pom.xml
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<addResources>true</addResources>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-release-plugin</artifactId>
<version>3.0.0-M1</version>
</plugin>
</plugins>
</build>
<distributionManagement>
<snapshotRepository>
<id>my-maven-snapshots</id>
<url>http://my-nexus-server/nexus/repository/maven-snapshots/</url>
</snapshotRepository>
<repository>
<id>my-maven-releases</id>
<url>http://my-nexus-server/nexus/repository/maven-releases/</url>
</repository>
</distributionManagement>
<scm>
<connection>scm:git:https://johndoe#bitbucket.org/johndoe/todo.git</connection>
<url>https://johndoe#bitbucket.org/johndoe/todo</url>
<developerConnection>scm:git:https://johndoe#bitbucket.org/johndoe/todo.git</developerConnection>
<tag>HEAD</tag>
</scm>
Error (Nexus is installed on this machine):
[INFO] --- maven-install-plugin:2.5.2:install (default-install) # todo ---
[INFO] Installing /home/admin/cloned-apps/todo/pom.xml to /home/admin/.m2/repository/com/example/todo/0.0.2-SNAPSHOT/todo-0.0.2-SNAPSHOT.pom
[INFO]
[INFO] --- maven-deploy-plugin:2.8.2:deploy (default-deploy) # todo ---
Downloading from my-maven-snapshots: http://my-nexus-server/nexus/repository/maven-snapshots/com/example/todo/0.0.2-SNAPSHOT/maven-metadata.xml
[WARNING] Could not transfer metadata com.example:todo:0.0.2-SNAPSHOT/maven-metadata.xml from/to my-maven-snapshots (http://my-nexus-server/nexus/repository/maven-snapshots/): Not authorized , ReasonPhrase:Unauthorized.
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary for todo 0.0.2-SNAPSHOT:
[INFO]
[INFO] todo ............................................... FAILURE [ 4.622 s]
[INFO] todo-webapp ........................................ SKIPPED
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 5.973 s
[INFO] Finished at: 2020-04-16T02:39:48Z
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-deploy-plugin:2.8.2:deploy (default-deploy) on project todo: Failed to retrieve remote metadata com.example:todo:0.0.2-SNAPSHOT /maven-metadata.xml: Could not transfer metadata com.example:todo:0.0.2-SNAPSHOT/maven-metadata.xml from/to my-maven-snapshots (http://my-nexus-server/nexus/repository/maven-snapshots/ ): Not authorized , ReasonPhrase:Unauthorized. -> [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

mvn clean deploy (from Nexus machine - FAILS ????)
Are you sure you're running mvn clean deploy from the same user under whose $HOME/.m2 directory you've copied the settings.xml and settings-security.xml files?
Also, did you try adding the password directly to settings.xml to rule out issues (if any) with settings-security.xml?
P.S: Avoid running mvn commands with sudo privilege.

Why would Maven enforcer restrict to Java 1.6?

When I run mvn test on my project, I get a JDK version error.
Here's the output:
[INFO] Scanning for projects...
[INFO]
[INFO] -----------------------< net.rorynolan:Detrendr >-----------------------
[INFO] Building Detrendr 0.0.0.9003-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[INFO]
[INFO] --- maven-enforcer-plugin:1.3.1:enforce (enforce-rules) # Detrendr ---
[INFO] Adding ignorable dependency: null:jcodings:null
[INFO] Adding ignore: org/jcodings/*
[INFO] Adding ignorable dependency: null:jnr-constants:null
[INFO] Adding ignore: com/kenai/constantine/*
...
[INFO] Adding ignorable dependency: com.sun:tools:null
[INFO] Adding ignore: *
[INFO] Restricted to JDK 1.6 yet org.junit.platform:junit-platform-commons:jar:1.3.1:test contains org/junit/platform/commons/JUnitException.class targeted to JDK 1.8
[INFO] Restricted to JDK 1.6 yet org.junit.jupiter:junit-jupiter-api:jar:5.3.1:test contains org/junit/jupiter/api/AssertArrayEquals.class targeted to JDK 1.8
[INFO] Restricted to JDK 1.6 yet org.junit.jupiter:junit-jupiter-engine:jar:5.3.1:test contains org/junit/jupiter/engine/Constants.class targeted to JDK 1.8
[INFO] Restricted to JDK 1.6 yet org.junit.platform:junit-platform-engine:jar:1.3.1:test contains org/junit/platform/engine/TestDescriptor.class targeted to JDK 1.8
[WARNING] Rule 5: org.apache.maven.plugins.enforcer.EnforceBytecodeVersion failed with message:
Found Banned Dependency: org.junit.platform:junit-platform-commons:jar:1.3.1
Found Banned Dependency: org.junit.jupiter:junit-jupiter-api:jar:5.3.1
Found Banned Dependency: org.junit.jupiter:junit-jupiter-engine:jar:5.3.1
Found Banned Dependency: org.junit.platform:junit-platform-engine:jar:1.3.1
Use 'mvn dependency:tree' to locate the source of the banned dependencies.
[INFO] ------------------------------------------------------------------------
...
[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
My pom.xml is at https://github.com/rorynolan/ij_detrendr/blob/master/pom.xml.
There's a clue in mvn help:effective-pom
where I can see
<plugin>
<artifactId>maven-enforcer-plugin</artifactId>
<version>1.3.1</version>
...
<rules>
...
<enforceBytecodeVersion>
<maxJdkVersion>1.6</maxJdkVersion>
<excludes>
<exclude>com.headius:invokebinder</exclude>
<exclude>com.sun:tools</exclude>
</excludes>
</enforceBytecodeVersion>
<banCircularDependencies />
</rules>
</configuration>
</plugin>
But that's all I've got. I've tried adding the maven enforcer plugin explicitly to my own pom.xml but to no avail.

Your project pom is parented by: net.imagej:pom-imagej:13.2.0 which is parented by org.scijava:pom-scijava:8.4.0 which contains the following excerpts relating to Java version:
<scijava.jvm.version>1.6</scijava.jvm.version>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<!-- Require the Java 6 platform. -->
<configuration>
<source>${scijava.jvm.version}</source>
<target>${scijava.jvm.version}</target>
</configuration>
</plugin>
<plugin>
<artifactId>maven-enforcer-plugin</artifactId>
...
<enforceBytecodeVersion>
<maxJdkVersion>${scijava.jvm.version}</maxJdkVersion>
...
</enforceBytecodeVersion>
</plugin>
So, the enforcer rule and its insistence on Java 1.6 is being inherited via your project's parentage.
This restriction to Java 1.6 conflicts with the JUnit5 libraries which were compiled to Java 1.8.
You could perhaps overide the enforcer plugin in your own POM (see references to combine.self="override" in the Maven docs) but the fact that your module's grandparent (org.scijava:pom-scijava:8.4.0) explicitly states that it expects to run on Java 1.6 strongly suggests that any such override will cause issues.
I think the wiser course would be one of the following:
Downgrade from Junit5 to a version of Junit4 which is compatible with Java 1.6
Upgrade the version of your parent (net.imagej:pom-imagej:13.2.0) to one which is compatible with Java 8, note: net.imagej:pom-imagej:13.2.0 is 3 years old so you might find that upgrading to the latest version makes this problem disappear.

GUI Application in IntelliJ IDEA using Maven: Throws NullPointerException after built into a jar

A similar question to this has been asked here about an year back. However, I find that the particular question has some missing details and points, and it has no proper answer given. So I am re-raising the same.
I have created a Maven project in IntelliJ IDEA and added a GUI form into that. By default IDEA creates a separate XML file for the structure of the form. Mine appears as follows.
<?xml version="1.0" encoding="UTF-8"?>
<form xmlns="http://www.intellij.com/uidesigner/form/" version="1" bind-to-class="TestUI">
<grid id="27dc6" binding="panel1" default-binding="true" layout-manager="GridLayoutManager" row-count="1" column-count="1" same-size-horizontally="false" same-size-vertically="false" hgap="-1" vgap="-1">
<margin top="0" left="0" bottom="0" right="0"/>
<constraints>
<xy x="20" y="20" width="500" height="400"/>
</constraints>
<properties/>
<border type="none"/>
<children>
<component id="e40aa" class="javax.swing.JTextField" binding="txtTest">
<constraints>
<grid row="0" column="0" row-span="1" col-span="1" vsize-policy="0" hsize-policy="6" anchor="8" fill="1" indent="0" use-parent-layout="false">
<preferred-size width="150" height="-1"/>
</grid>
</constraints>
<properties/>
</component>
</children>
</grid>
</form>
This has a class bound to it which appears as follows.
import javax.swing.*;
public class TestUI {
private JTextField txtTest;
private JPanel panel1;
public TestUI() {
String str = txtTest.getText();
JOptionPane.showMessageDialog(null, str);
createAndShowGui();
txtTest.addActionListener(new ActionListener(){
#Override
public void actionPerformed(ActionEvent e) {
JOptionPane.showMessageDialog(null, "Clicked");
}
});
}
private void createAndShowGui(){
JFrame frame = new JFrame("test");
frame.setContentPane(panel1);
frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
TestUI obj = new TestUI();
}
}
POM.xml for this project originally looks like follows.
<?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>com.company.test</groupId>
<artifactId>UITestWithIJ</artifactId>
<version>1.0-SNAPSHOT</version>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.6.0</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<version>2.6</version>
<configuration>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
<archive>
<manifest>
<mainClass>TestUI</mainClass>
</manifest>
</archive>
</configuration>
<executions>
<execution>
<id>make-assembly</id>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
When this is run in IDEA, it works flawless. So I have built it into a fat jar via Maven using the assembly plugin. Then the problems started to jump out. When the jar created by Maven is executed, it throws a NullPointerException which appears as follows.
user#group-PC09:~/.m2/repository/com/company/test/UITestWithIJ/1.0-SNAPSHOT$ java -jar UITestWithIJ-1.0-SNAPSHOT-jar-with-dependencies.jar
Exception in thread "main" java.lang.NullPointerException
at TestUI.<init>(TestUI.java:13)
at TestUI.main(TestUI.java:34)
Deeper I dug, I found that the reason for this is the line #13 that which is having txtTest identifier in it. This identifier by no mean is initialized. Hence it takes the default value null. So I realized that the problem is actually with IDEA and I simply need to transform the .form file generated by IDEA into some format that JVM alone could read.
Upon research I could find a candidate solution here. According to the instructions therein, I have modified my POM.xml as follows.
Added the following dependency
<dependency>
<groupId>com.intellij</groupId>
<artifactId>forms_rt</artifactId>
<version>7.0.3</version>
</dependency>
Added the following plugin
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>ideauidesigner-maven-plugin</artifactId>
<executions>
<execution>
<goals>
<goal>javac2</goal>
</goals>
</execution>
</executions>
<configuration>
<fork>true</fork>
<debug>true</debug>
<failOnError>true</failOnError>
</configuration>
</plugin>
This has resolved the problem. However, in the TestUI.java you see that there is an event listener added. This could be replaced with a lambda expression from Java 8 forth. Once I have done that replacement, Maven fails to build the jar, throwing the following errors.
user#group-PC09:~/IdeaProjects/UITestWithIJ$ mvn clean install
[INFO] Scanning for projects...
[WARNING]
[WARNING] Some problems were encountered while building the effective model for com.company.test:UITestWithIJ:jar:1.0-SNAPSHOT
[WARNING] 'build.plugins.plugin.version' for org.codehaus.mojo:ideauidesigner-maven-plugin is missing. # line 53, column 21
[WARNING]
[WARNING] It is highly recommended to fix these problems because they threaten the stability of your build.
[WARNING]
[WARNING] For this reason, future Maven versions might no longer support building such malformed projects.
[WARNING]
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building UITestWithIJ 1.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) # UITestWithIJ ---
[INFO] Deleting /home/user/IdeaProjects/UITestWithIJ/target
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) # UITestWithIJ ---
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.6.0:compile (default-compile) # UITestWithIJ ---
[INFO] Changes detected - recompiling the module!
[WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent!
[INFO] Compiling 1 source file to /home/user/IdeaProjects/UITestWithIJ/target/classes
[INFO]
[INFO] --- ideauidesigner-maven-plugin:1.0-beta-1:javac2 (default) # UITestWithIJ ---
[INFO] Executing IDEA UI Designer task...
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.227 s
[INFO] Finished at: 2016-12-29T11:11:43+05:30
[INFO] Final Memory: 17M/205M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.codehaus.mojo:ideauidesigner-maven-plugin:1.0-beta-1:javac2 (default) on project UITestWithIJ: Execution default of goal org.codehaus.mojo:ideauidesigner-maven-plugin:1.0-beta-1:javac2 failed: 52264 -> [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/PluginExecutionException
I have retired the same with -X switch and found that what actually fails here is the maven goal javac2 for the plugin ideauidesigner-maven-plugin and the only possible cause for that is the lambda expression. A method in the plugin throws an ArrayIndexOutOfBoundsException I have checked this and the dependency forms_rt in Maven repository and I noticed that those are last updated in 2009 and 2010. May be the plugin is incapable of handling lambda expression.
Following are my questions.
Am I doing something wrong?
Is there a fix for this?
Is there a viable alternative for this?

I came across this issue when I was using IntelliJ to convert my project to a maven one. This process automatically created package folders and put my src files in it. So I added the package to the top of all my files. But this caused the exact same error when my JFrame was working fine before. Turns out in the form file, in the XML, the binding was wrong because now I was using packages
<form xmlns="http://www.intellij.com/uidesigner/form/" version="1" bind-to-class="TestUI">
I changed the bind-to-class attribute to correctly include the new package. This post is old but it might help someone looking through here in the future.

Your candidate solution didn't work for me.
After research, this happen only if we compile using maven. If we compile using Intellij, everything goes fine. So my only solution is doing this step when packaging.
Clean using Maven to make sure every compiled class cleared
Build using built-in Intellij
Package using Maven

First possibility:
frame.setContentPane(panel1);
Here, pane1 is not initialized and it is null.
Second possibility:
String str = txtTest.getText();
JOptionPane.showMessageDialog(null, str);
You are passing null to showMessageDialog() where it expects the parent Component.

maven-release-plugin [ERROR] fatal: pathspec '' did not match any files

I'm trying to do a release of my OSS library, but I keep running in to a strange issue with the maven-release-plugin. This used to work fine. I've probably updated either Maven or Git but I can't seem to find the right combination to get things working again for the release.
Has anyone run into this issue, and does anyone know of a solution? I'm using the Maven Shade Plugin (which is what is creating the dependency-reduced-pom.xml files in the build.)
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 09:27 min
[INFO] Finished at: 2015-11-04T08:23:07-05:00
[INFO] Final Memory: 111M/1039M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-release-plugin:2.5.1:prepare (default-cli) on project rewrite-parent: Unable to commit files
[ERROR] Provider message:
[ERROR] The git-add command failed.
[ERROR] Command output:
[ERROR] fatal: pathspec 'config-prettyfaces/dependency-reduced-pom.xml' did not match any files
[ERROR] -> [Help 1]
The dependency-reduced-pom.xml, as I understand it, is a temporary file used while merging dependencies into an uber-jar, and should not be committed, so I'm confused why maven is trying to add this file at all.
Thanks for any help.

I figured it out, at least a workaround:
Using 'checkModificationExcludes" configuration option of the maven-release-plugin to exclude the dependency-reduced-pom.xml seems to work around the issue, though I'm not sure this is exactly what the property was intended for (the documentation is unclear):
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-release-plugin</artifactId>
<version>2.5.3</version>
<configuration>
<checkModificationExcludes>
<checkModificationExclude>dependency-reduced-pom.xml</checkModificationExclude>
</checkModificationExcludes>
</configuration>
</plugin>

Maven GAE Plugin - Unable to run gae:debug

I'm having trouble running the gae:debug goal of the Maven GAE Plugin. The error I'm receiving is below. Any ideas?
I'm running it with "mvn gae:debug".
[INFO] Packaging webapp
[INFO] Assembling webapp[test-gae] in [C:\development\test-gae\target\test-gae-0.0.1-SNAPSHOT]
[INFO] Processing war project
[INFO] Webapp assembled in[56 msecs]
[INFO] Building war: C:\development\test-gae\target\test-gae-0.0.1-SNAPSHOT.war
[INFO] [statemgmt:end-fork]
[INFO] Ending forked execution [fork id: -2101914270]
[INFO] [gae:debug]
Usage: <dev-appserver> [options] <war directory>
Options:
--help, -h Show this help message and exit.
--server=SERVER The server to use to determine the latest
-s SERVER SDK version.
--address=ADDRESS The address of the interface on the local machine
-a ADDRESS to bind to (or 0.0.0.0 for all interfaces).
--port=PORT The port number to bind to on the local machine.
-p PORT
--sdk_root=root Overrides where the SDK is located.
--disable_update_check Disable the check for newer SDK versions.
EDIT: gae:run with the jvmFlags option is also giving me the same result with the below configuration.
<plugin>
<groupId>net.kindleit</groupId>
<artifactId>maven-gae-plugin</artifactId>
<version>0.5.0</version>
<configuration>
<jvmFlags>
<jvmFlag>-Xdebug</jvmFlag>
<jvmFlag>-Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=8000</jvmFlag>
</jvmFlags>
</configuration>
</plugin>

It looks like this is an open issue. I have submitted a patch for this (see Issue 38).