java.lang.String cannot be cast to org.codehaus.mojo.exec.Modulepath #75

ttelford · 2017-03-08T00:16:59Z

I had some pomfiles which didn't specify a version for exec-maven-plugin. (Ignoring warnings at my own peril!)

When the new version became available in Maven Central, I started seeing errors along the lines of:

A type incompatibility occured while executing org.codehaus.mojo:exec-maven-plugin:1.6.0:exec: java.lang.String cannot be cast to org.codehaus.mojo.exec.Modulepath
[ERROR] -----------------------------------------------------
[ERROR] realm =    plugin>org.codehaus.mojo:exec-maven-plugin:1.6.0
[ERROR] strategy = org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy
[ERROR] urls[0]  = file:/home/user/.m2/repository/org/codehaus/mojo/exec-maven-plugin/1.6.0/exec-maven-plugin-1.6.0.jar
[ERROR] urls[1]  = file:/home/user/.m2/repository/org/codehaus/plexus/plexus-interpolation/1.11/plexus-interpolation-1.11.jar
[ERROR] urls[2]  = file:/home/user/.m2/repository/backport-util-concurrent/backport-util-concurrent/3.1/backport-util-concurrent-3.1.jar
[ERROR] urls[3]  = file:/home/user/.m2/repository/org/slf4j/slf4j-jdk14/1.5.6/slf4j-jdk14-1.5.6.jar
[ERROR] urls[4]  = file:/home/user/.m2/repository/org/slf4j/slf4j-api/1.5.6/slf4j-api-1.5.6.jar
[ERROR] urls[5]  = file:/home/user/.m2/repository/org/slf4j/jcl-over-slf4j/1.5.6/jcl-over-slf4j-1.5.6.jar
[ERROR] urls[6]  = file:/home/user/.m2/repository/org/apache/maven/reporting/maven-reporting-api/2.2.1/maven-reporting-api-2.2.1.jar
[ERROR] urls[7]  = file:/home/user/.m2/repository/org/apache/maven/doxia/doxia-sink-api/1.1/doxia-sink-api-1.1.jar
[ERROR] urls[8]  = file:/home/user/.m2/repository/org/apache/maven/doxia/doxia-logging-api/1.1/doxia-logging-api-1.1.jar
[ERROR] urls[9]  = file:/home/user/.m2/repository/commons-cli/commons-cli/1.2/commons-cli-1.2.jar
[ERROR] urls[10] = file:/home/user/.m2/repository/org/codehaus/plexus/plexus-interactivity-api/1.0-alpha-4/plexus-interactivity-api-1.0-alpha-4.jar
[ERROR] urls[11] = file:/home/user/.m2/repository/org/sonatype/plexus/plexus-sec-dispatcher/1.3/plexus-sec-dispatcher-1.3.jar
[ERROR] urls[12] = file:/home/user/.m2/repository/org/sonatype/plexus/plexus-cipher/1.4/plexus-cipher-1.4.jar
[ERROR] urls[13] = file:/home/user/.m2/repository/org/codehaus/plexus/plexus-utils/3.0.20/plexus-utils-3.0.20.jar
[ERROR] urls[14] = file:/home/user/.m2/repository/org/apache/commons/commons-exec/1.3/commons-exec-1.3.jar
[ERROR] Number of foreign imports: 1
[ERROR] import: Entry[import  from realm ClassRealm[maven.api, parent: null]]

There isn't any stack dump

I'm using Maven 3.2.5 and JDK 1.7.0_71, which are both older.

Obviously, I can fix the problem by going to the previous version of the plugin (1.5.0).

Is this an actual issue, or am I simply using a toolstack that's "too old"?

The text was updated successfully, but these errors were encountered:

markus-s24 · 2017-04-05T19:15:34Z

Caused by: java.lang.ClassCastException: java.lang.String cannot be cast to org.codehaus.mojo.exec.Modulepath
at org.codehaus.mojo.exec.ExecMojo.handleArguments(ExecMojo.java:483)
at org.codehaus.mojo.exec.ExecMojo.execute(ExecMojo.java:271)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
... 21 more

markus-s24 · 2017-04-05T19:48:28Z

It seems to be related to the "-p" in the arguments of the configuration:

<configuration>
   <executable>redis-cli</executable>
   <arguments>
      <argument>-p</argument>
      <argument>${integrationTest.redisPort}</argument>
      <argument>shutdown</argument>
   </arguments>
</configuration>

This configuration worked fine with the 1.5.0 version of the plugin.

earcam · 2017-04-20T17:09:03Z

I'm getting similar with 9-ea+165 on OSX, when using maven-exec-plugin:1.6.0 to run a simple java jigsaw multi-module.

[ERROR] Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.6.0:exec (default) on project io.earcam.example.javanine.jmod.consumer: A type incompatibility occurred while executing org.codehaus.mojo:exec-maven-plugin:1.6.0:exec: java.base/java.lang.String cannot be cast to org.codehaus.mojo.exec.Modulepath

This doesn't happen with maven-exec-plugin:1.5.0.

bguerin · 2017-05-03T12:14:07Z

Same here

I think the bug has been introduced in 093153b

Line 477 of ExecMojo.java should be

else if ( argument instanceof Modulepath && isLongModulePathArgument( (String) argument ) )

instead of

if ( argument instanceof String && isLongModulePathArgument( (String) argument ) )

jpopadak · 2017-06-06T18:10:15Z

I get the same issue on my end.
We send a few different properties:

<argument>-p</argument>
<argument>
   ${project.basedir}/src/main/resources/config/svc-${service}-client-java.properties
</argument>
<argument>-r</argument>
<argument>${request}</argument>
<argument>-e</argument>
<argument>${envName}</argument>

Here is a more full stack trace:

org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.6.0:exec (default) on project svc-client-java: A type incompatibility occurred while executing org.codehaus.mojo:exec-maven-plugin:1.6.0:exec: java.lang.String cannot be cast to org.codehaus.mojo.exec.Modulepath
-----------------------------------------------------
realm =    plugin>org.codehaus.mojo:exec-maven-plugin:1.6.0
strategy = org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy
urls[0] = file:/Users/jamespopadak/.m2/repository/org/codehaus/mojo/exec-maven-plugin/1.6.0/exec-maven-plugin-1.6.0.jar
urls[1] = file:/Users/jamespopadak/.m2/repository/org/codehaus/plexus/plexus-interpolation/1.11/plexus-interpolation-1.11.jar
urls[2] = file:/Users/jamespopadak/.m2/repository/backport-util-concurrent/backport-util-concurrent/3.1/backport-util-concurrent-3.1.jar
urls[3] = file:/Users/jamespopadak/.m2/repository/org/slf4j/slf4j-jdk14/1.5.6/slf4j-jdk14-1.5.6.jar
urls[4] = file:/Users/jamespopadak/.m2/repository/org/slf4j/jcl-over-slf4j/1.5.6/jcl-over-slf4j-1.5.6.jar
urls[5] = file:/Users/jamespopadak/.m2/repository/org/apache/maven/reporting/maven-reporting-api/2.2.1/maven-reporting-api-2.2.1.jar
urls[6] = file:/Users/jamespopadak/.m2/repository/org/apache/maven/doxia/doxia-sink-api/1.1/doxia-sink-api-1.1.jar
urls[7] = file:/Users/jamespopadak/.m2/repository/org/apache/maven/doxia/doxia-logging-api/1.1/doxia-logging-api-1.1.jar
urls[8] = file:/Users/jamespopadak/.m2/repository/commons-cli/commons-cli/1.2/commons-cli-1.2.jar
urls[9] = file:/Users/jamespopadak/.m2/repository/org/codehaus/plexus/plexus-interactivity-api/1.0-alpha-4/plexus-interactivity-api-1.0-alpha-4.jar
urls[10] = file:/Users/jamespopadak/.m2/repository/org/sonatype/plexus/plexus-sec-dispatcher/1.3/plexus-sec-dispatcher-1.3.jar
urls[11] = file:/Users/jamespopadak/.m2/repository/org/sonatype/plexus/plexus-cipher/1.4/plexus-cipher-1.4.jar
urls[12] = file:/Users/jamespopadak/.m2/repository/org/codehaus/plexus/plexus-utils/3.0.20/plexus-utils-3.0.20.jar
urls[13] = file:/Users/jamespopadak/.m2/repository/org/apache/commons/commons-exec/1.3/commons-exec-1.3.jar
Number of foreign imports: 1
import: Entry[import  from realm ClassRealm[maven.api, parent: null]]

-----------------------------------------------------

    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:213)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:154)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:146)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:309)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:194)
    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:107)
    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:993)
    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:345)
    at org.apache.maven.cli.MavenCli.main(MavenCli.java:191)
    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:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
Caused by: org.apache.maven.plugin.PluginExecutionException: A type incompatibility occurred while executing org.codehaus.mojo:exec-maven-plugin:1.6.0:exec: java.lang.String cannot be cast to org.codehaus.mojo.exec.Modulepath
-----------------------------------------------------
realm =    plugin>org.codehaus.mojo:exec-maven-plugin:1.6.0
strategy = org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy
urls[0] = file:/Users/jamespopadak/.m2/repository/org/codehaus/mojo/exec-maven-plugin/1.6.0/exec-maven-plugin-1.6.0.jar
urls[1] = file:/Users/jamespopadak/.m2/repository/org/codehaus/plexus/plexus-interpolation/1.11/plexus-interpolation-1.11.jar
urls[2] = file:/Users/jamespopadak/.m2/repository/backport-util-concurrent/backport-util-concurrent/3.1/backport-util-concurrent-3.1.jar
urls[3] = file:/Users/jamespopadak/.m2/repository/org/slf4j/slf4j-jdk14/1.5.6/slf4j-jdk14-1.5.6.jar
urls[4] = file:/Users/jamespopadak/.m2/repository/org/slf4j/jcl-over-slf4j/1.5.6/jcl-over-slf4j-1.5.6.jar
urls[5] = file:/Users/jamespopadak/.m2/repository/org/apache/maven/reporting/maven-reporting-api/2.2.1/maven-reporting-api-2.2.1.jar
urls[6] = file:/Users/jamespopadak/.m2/repository/org/apache/maven/doxia/doxia-sink-api/1.1/doxia-sink-api-1.1.jar
urls[7] = file:/Users/jamespopadak/.m2/repository/org/apache/maven/doxia/doxia-logging-api/1.1/doxia-logging-api-1.1.jar
urls[8] = file:/Users/jamespopadak/.m2/repository/commons-cli/commons-cli/1.2/commons-cli-1.2.jar
urls[9] = file:/Users/jamespopadak/.m2/repository/org/codehaus/plexus/plexus-interactivity-api/1.0-alpha-4/plexus-interactivity-api-1.0-alpha-4.jar
urls[10] = file:/Users/jamespopadak/.m2/repository/org/sonatype/plexus/plexus-sec-dispatcher/1.3/plexus-sec-dispatcher-1.3.jar
urls[11] = file:/Users/jamespopadak/.m2/repository/org/sonatype/plexus/plexus-cipher/1.4/plexus-cipher-1.4.jar
urls[12] = file:/Users/jamespopadak/.m2/repository/org/codehaus/plexus/plexus-utils/3.0.20/plexus-utils-3.0.20.jar
urls[13] = file:/Users/jamespopadak/.m2/repository/org/apache/commons/commons-exec/1.3/commons-exec-1.3.jar
Number of foreign imports: 1
import: Entry[import  from realm ClassRealm[maven.api, parent: null]]

-----------------------------------------------------

    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:196)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
    ... 20 more
Caused by: java.lang.ClassCastException: java.lang.String cannot be cast to org.codehaus.mojo.exec.Modulepath
    at org.codehaus.mojo.exec.ExecMojo.handleArguments(ExecMojo.java:483)
    at org.codehaus.mojo.exec.ExecMojo.execute(ExecMojo.java:271)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
    ... 21 more

Sovietaced · 2017-06-07T01:49:06Z

+1

ctubbsii · 2017-06-12T21:28:12Z

Same problem here with Maven 3.3.9 and OpenJDK 1.8

Apache Maven 3.3.9 (NON-CANONICAL_2016-07-01T11:53:38Z_mockbuild; 2016-07-01T07:53:38-04:00)
Maven home: /usr/share/maven
Java version: 1.8.0_131, vendor: Oracle Corporation
Java home: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.131-1.b12.fc25.x86_64/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "linux", version: "4.11.3-202.fc25.x86_64", arch: "amd64", family: "unix"

This issue prevents me from upgrading to 1.6.0 version of this plugin.

martinreck · 2017-06-15T13:09:52Z

A similar error may occurs when an executable expects a -cp argument and property longClasspath is true.

See line 465 of ExecMojo.java.

fgaule · 2017-08-14T18:58:33Z

+1

nipafx · 2017-10-06T10:37:02Z

Short term fix is to set <longModulepath>false</longModulepath>.

aaccioly · 2017-12-11T15:52:42Z

Hi @martinreck, is your commit in #80 meant to fix #75? If so, do you have a estimate date for release 1.6.1?

ctubbsii · 2018-02-15T23:55:38Z

I saw this same issue with Maven 3.5.0 and Java 1.7.

gunnarmorling · 2018-03-17T10:20:26Z

Sent a PR to fix it here: #100. Tried that with a project of mine and all looked good. Would be cool if people here did the same and reported back if there are any issues with the fix.

ghost · 2018-06-05T15:34:13Z

+1

blling · 2018-06-10T13:46:39Z

+1

malikoski · 2018-06-20T21:00:32Z

+1

jackson-chris · 2018-10-04T13:13:55Z

+1

keltik85 · 2018-10-11T13:24:35Z

+1

keltik85 · 2018-10-11T13:30:40Z

<plugin><configuration><longModulepath>false</longModulepath>... fixed it for me as a workaround.

ctubbsii · 2018-10-11T13:37:57Z

@keltik85 said:

Short term fix is to set <longModulepath>false</longModulepath> into <plugin><configuration> fixed it for me as a workaround.

I think that will work for the case I stated in #100 (comment) , although it's kind of annoying to have to set a module-related config item when the bug is manifesting itself in a way that has nothing to do with modules at all, but just some arbitrary parameter with the same -p name on a different executable.

I don't think that it's going to be a short-term fix, though. Given the slowness to address this bug, it's probably going to be a long-term fix. 😉

martinreck mentioned this issue Jun 15, 2017

Fix issue #75 #80

Closed

gunnarmorling added a commit to gunnarmorling/exec-maven-plugin that referenced this issue Mar 17, 2018

mojohaus#75 Supporting module path given as string

a83bc8d

ctubbsii mentioned this issue Jun 5, 2018

#75 Supporting module path given as string #100

Closed

rfscholte added a commit that referenced this issue Mar 5, 2019

#75 java.lang.String cannot be cast to org.codehaus.mojo.exec.Modulepath

137189b

rfscholte added a commit that referenced this issue Mar 5, 2019

#75 java.lang.String cannot be cast to org.codehaus.mojo.exec.Modulepath

3296fc8

rfscholte added this to the 3.0.0 milestone Mar 5, 2019

rfscholte closed this as completed Mar 5, 2019

khmarbaise added the bug label Jun 9, 2020

dependabot bot mentioned this issue Mar 16, 2021

Bump exec-maven-plugin from 1.6.0 to 3.0.0 ThePrez/ServiceCommander-IBMi#18

Merged

ctubbsii mentioned this issue Oct 19, 2022

Error upgrading to exec-maven-plugin version 3.1.0 apache/accumulo#3033

Closed

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java.lang.String cannot be cast to org.codehaus.mojo.exec.Modulepath #75

java.lang.String cannot be cast to org.codehaus.mojo.exec.Modulepath #75

ttelford commented Mar 8, 2017 •

edited

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markus-s24 commented Apr 5, 2017

markus-s24 commented Apr 5, 2017 •

edited

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earcam commented Apr 20, 2017

bguerin commented May 3, 2017

jpopadak commented Jun 6, 2017

Sovietaced commented Jun 7, 2017

ctubbsii commented Jun 12, 2017

martinreck commented Jun 15, 2017 •

edited

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fgaule commented Aug 14, 2017

nipafx commented Oct 6, 2017

aaccioly commented Dec 11, 2017 •

edited

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ctubbsii commented Feb 15, 2018

gunnarmorling commented Mar 17, 2018

ghost commented Jun 5, 2018

blling commented Jun 10, 2018

malikoski commented Jun 20, 2018

jackson-chris commented Oct 4, 2018

keltik85 commented Oct 11, 2018

keltik85 commented Oct 11, 2018 •

edited

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ctubbsii commented Oct 11, 2018

java.lang.String cannot be cast to org.codehaus.mojo.exec.Modulepath #75

java.lang.String cannot be cast to org.codehaus.mojo.exec.Modulepath #75

Comments

ttelford commented Mar 8, 2017 • edited Loading

markus-s24 commented Apr 5, 2017

markus-s24 commented Apr 5, 2017 • edited Loading

earcam commented Apr 20, 2017

bguerin commented May 3, 2017

jpopadak commented Jun 6, 2017

Sovietaced commented Jun 7, 2017

ctubbsii commented Jun 12, 2017

martinreck commented Jun 15, 2017 • edited Loading

fgaule commented Aug 14, 2017

nipafx commented Oct 6, 2017

aaccioly commented Dec 11, 2017 • edited Loading

ctubbsii commented Feb 15, 2018

gunnarmorling commented Mar 17, 2018

ghost commented Jun 5, 2018

blling commented Jun 10, 2018

malikoski commented Jun 20, 2018

jackson-chris commented Oct 4, 2018

keltik85 commented Oct 11, 2018

keltik85 commented Oct 11, 2018 • edited Loading

ctubbsii commented Oct 11, 2018

ttelford commented Mar 8, 2017 •

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markus-s24 commented Apr 5, 2017 •

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martinreck commented Jun 15, 2017 •

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aaccioly commented Dec 11, 2017 •

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keltik85 commented Oct 11, 2018 •

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