Daniel Langerenken created MNG-7318:
---------------------------------------
Summary: NullPointerException during mvn install when property is
called "project.version"
Key: MNG-7318
URL: https://issues.apache.org/jira/browse/MNG-7318
Project: Maven
Issue Type: Bug
Components: Command Line, Inheritance and Interpolation
Affects Versions: 3.6.3
Environment: Apache Maven 3.6.3
Maven home: /usr/share/maven
Java version: 1.8.0_221, vendor: Oracle Corporation, runtime:
/usr/lib/jvm/jdk1.8.0_221/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "linux", version: "5.11.0-38-generic", arch: "amd64", family: "unix"
Reporter: Daniel Langerenken
Use the following pom.xml and run mvn install:
{code:java}
<?xml version="1.0" encoding="UTF-8"?><project
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xmlns="http://maven.apache.org/POM/4.0.0";
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>org.example</groupId>
<artifactId>foo</artifactId>
<version>${revision}</version>
<name>Foo</name>
<properties>
<project.version>1.0</project.version>
<revision>${project.version}</revision>
</properties>
</project>
{code}
It will throw the following exception:
{code:java}
[ERROR] Internal error: java.lang.NullPointerException -> [Help 1]
org.apache.maven.InternalErrorException: Internal error:
java.lang.NullPointerException
at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:120)
at org.apache.maven.cli.MavenCli.execute (MavenCli.java:957)
at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
at org.apache.maven.cli.MavenCli.main (MavenCli.java:193)
at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke
(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke
(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke (Method.java:498)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced
(Launcher.java:282)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch
(Launcher.java:225)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode
(Launcher.java:406)
at org.codehaus.plexus.classworlds.launcher.Launcher.main
(Launcher.java:347)
Caused by: java.lang.NullPointerException
at java.util.Hashtable$Entry.setValue (Hashtable.java:1286)
at
org.apache.maven.model.interpolation.StringVisitorModelInterpolator$ModelVisitor.visit
(StringVisitorModelInterpolator.java:1429)
at
org.apache.maven.model.interpolation.StringVisitorModelInterpolator$ModelVisitor.visit
(StringVisitorModelInterpolator.java:1027)
at
org.apache.maven.model.interpolation.StringVisitorModelInterpolator$ModelVisitor.visit
(StringVisitorModelInterpolator.java:170)
at
org.apache.maven.model.interpolation.StringVisitorModelInterpolator.interpolateModel
(StringVisitorModelInterpolator.java:107)
at org.apache.maven.model.building.DefaultModelBuilder.interpolateModel
(DefaultModelBuilder.java:789)
at org.apache.maven.model.building.DefaultModelBuilder.build
(DefaultModelBuilder.java:393)
at org.apache.maven.project.DefaultProjectBuilder.build
(DefaultProjectBuilder.java:448)
at org.apache.maven.project.DefaultProjectBuilder.build
(DefaultProjectBuilder.java:414)
at org.apache.maven.project.DefaultProjectBuilder.build
(DefaultProjectBuilder.java:377)
at org.apache.maven.graph.DefaultGraphBuilder.collectProjects
(DefaultGraphBuilder.java:414)
at org.apache.maven.graph.DefaultGraphBuilder.getProjectsForMavenReactor
(DefaultGraphBuilder.java:405)
at org.apache.maven.graph.DefaultGraphBuilder.build
(DefaultGraphBuilder.java:82)
at org.apache.maven.DefaultMaven.buildGraph (DefaultMaven.java:507)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:219)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
at org.apache.maven.cli.MavenCli.execute (MavenCli.java:957)
at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
at org.apache.maven.cli.MavenCli.main (MavenCli.java:193){code}
This is only happening when I name the property `project.version` indicating
that this might be an illegal name. I can switch it to project.ver and it works
fine.
This should not throw a NullPointerException but instead either work or throw
an appropriate exception.
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