After disabling generation of 'Use' pages, javadoc works fine for my
project.
I removed '-use' from options file that mavan/javadoc plugin generated
and javadoc didn't throw NPE.
Setting 'use' to 'false' in maven-javadoc-plugin also works fine:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-javadoc-plugin</artifactId>
<configuration>
<use>false</use>
<links>
<link>http://java.sun.com/javase/6/docs/api/</link>
</links>
</configuration>
</plugin>
Denis Kranjcec
-----Original Message-----
From: Denis Kranjčec [mailto:denis.kranj...@srce.hr]
Sent: Friday, May 21, 2010 2:22 PM
To: Maven Users List
Subject: RE: javadoc throws NPE
Martin, thanks for reply.
I'm using default values:
outputDirectory: ${project.build.directory}/apidocs
reportOutputDirectory: ${project.reporting.outputDirectory}/apidocs
Maven/javadoc plugin generate javadoc.bat in target\site\apidocs:
"C:\Program Files\Java\jdk1.6.0_20\jre\..\bin\javadoc.exe" @options
@packages @argfile
When I run that javadoc.bat from prompt javadoc throws same exception:
...
Generating
C:/ci/svn/project/project-name/trunk/target/site/apidocs\mypackage/\pack
age-use.ht
ml...
java.lang.NullPointerException
at
com.sun.tools.doclets.formats.html.PackageUseWriter.generatePackageUse(P
ackageUseWriter.java:180)
at
com.sun.tools.doclets.formats.html.PackageUseWriter.generatePackageList(
PackageUseWriter.java:124)
at
com.sun.tools.doclets.formats.html.PackageUseWriter.generatePackageUse(P
ackageUseWriter.java:110)
at
com.sun.tools.doclets.formats.html.PackageUseWriter.generatePackageUseFi
le(PackageUseWriter.java:99)
at
com.sun.tools.doclets.formats.html.PackageUseWriter.generate(PackageUseW
riter.java:78)
at
com.sun.tools.doclets.formats.html.ClassUseWriter.generate(ClassUseWrite
r.java:116)
at
com.sun.tools.doclets.formats.html.HtmlDoclet.generateOtherFiles(HtmlDoc
let.java:92)
at
com.sun.tools.doclets.internal.toolkit.AbstractDoclet.startGeneration(Ab
stractDoclet.java:122)
at
com.sun.tools.doclets.internal.toolkit.AbstractDoclet.start(AbstractDocl
et.java:64)
at
com.sun.tools.doclets.formats.html.HtmlDoclet.start(HtmlDoclet.java:42)
at
com.sun.tools.doclets.standard.Standard.start(Standard.java:23)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.jav
a:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessor
Impl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
com.sun.tools.javadoc.DocletInvoker.invoke(DocletInvoker.java:269)
at
com.sun.tools.javadoc.DocletInvoker.start(DocletInvoker.java:143)
at com.sun.tools.javadoc.Start.parseAndExecute(Start.java:340)
at com.sun.tools.javadoc.Start.begin(Start.java:128)
at com.sun.tools.javadoc.Main.execute(Main.java:41)
at com.sun.tools.javadoc.Main.main(Main.java:31)
options file in same folder:
-classpath
'C:/ci/svn/XXX.jar'
-encoding
'Cp1250'
-protected
-sourcepath
'C:/ci/svn/project/project-name/trunk/src/main/java'
-author
-bottom
'Copyright © 2006-2010 <a
href="http://www.example.com";>Example</a>. All Rights Reserved.'
-charset
'UTF-8'
-d
'C:/ci/svn/project/project-name/trunk/target/site/apidocs'
-docencoding
'UTF-8'
-doctitle
'PROJECT_NAME PROJECT_VERSION-SNAPSHOT API'
-link
'http://java.sun.com/javase/6/docs/api'
-use
-version
-windowtitle
'PROJECT_NAME PROJECT_VERSION-SNAPSHOT API'
packages file in same folder:
mypackage
mypackage.management
mypackage.management.statistika
argfile file in same folder:
'C:/ci/svn/project/project-name/trunk/src/main/java/ABCMain.java'
'C:/ci/svn/project/project-name/trunk/src/main/java/XYZ.java'
Regards,
Denis
-----Original Message-----
From: Martin Gainty [mailto:mgai...@hotmail.com]
Sent: Thursday, May 20, 2010 7:21 PM
To: users@maven.apache.org
Subject: RE: javadoc throws NPE
Denis-
http://maven.apache.org/plugins/maven-javadoc-plugin/javadoc-mojo.html
can you provide us the configuration parameters for:
outputDirectory
reportOutputDirectory
thanks,
Martin--
______________________________________________
Jogi és Bizalmassági kinyilatkoztatás
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hogy jelentse azt nekünk vissza. Semmiféle továbbítása vagy másolatának
készítése nem megengedett. Ez az üzenet csak ismeret cserét szolgál és
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könnyen megváltoztathatóak, ezért minket semmi felelöség nem terhelhet
ezen üzenet tartalma miatt.
> Subject: javadoc throws NPE
> Date: Thu, 20 May 2010 18:10:57 +0200
> From: denis.kranj...@srce.hr
> To: users@maven.apache.org
>
> I am trying to generate javadoc for a project but javadoc throws NPE
> without any information.
>
> Maven output:
> Generating
>
C:/ci/svn/project/project-name/trunk/target/site/apidocs\package-use.htm
> l...
> Generating C:/ci/svn/project/project-name
> /trunk/target/site/apidocs\mypackage/\package-use.ht
> ml...
> [INFO]
>
------------------------------------------------------------------------
> [ERROR] BUILD ERROR
> [INFO]
>
------------------------------------------------------------------------
> [INFO] Error during page generation
>
> Embedded error: Error rendering Maven report:
> Exit code: 1 - java.lang.NullPointerException
> at
>
com.sun.tools.doclets.formats.html.PackageUseWriter.generatePackageUse(P
> ackageUseWriter.java:180)
> at
>
com.sun.tools.doclets.formats.html.PackageUseWriter.generatePackageList(
> PackageUseWriter.java:124)
> at
>
com.sun.tools.doclets.formats.html.PackageUseWriter.generatePackageUse(P
> ackageUseWriter.java:110)
> at
>
com.sun.tools.doclets.formats.html.PackageUseWriter.generatePackageUseFi
> le(PackageUseWriter.java:99)
> at
>
com.sun.tools.doclets.formats.html.PackageUseWriter.generate(PackageUseW
> riter.java:78)
> at
>
com.sun.tools.doclets.formats.html.ClassUseWriter.generate(ClassUseWrite
> r.java:116)
> at
>
com.sun.tools.doclets.formats.html.HtmlDoclet.generateOtherFiles(HtmlDoc
> let.java:92)
> at
>
com.sun.tools.doclets.internal.toolkit.AbstractDoclet.startGeneration(Ab
> stractDoclet.java:122)
> at
>
com.sun.tools.doclets.internal.toolkit.AbstractDoclet.start(AbstractDocl
> et.java:64)
> at
>
com.sun.tools.doclets.formats.html.HtmlDoclet.start(HtmlDoclet.java:42)
> at
> com.sun.tools.doclets.standard.Standard.start(Standard.java:23)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
>
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.jav
> a:39)
> at
>
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessor
> Impl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at
> com.sun.tools.javadoc.DocletInvoker.invoke(DocletInvoker.java:269)
> at
> com.sun.tools.javadoc.DocletInvoker.start(DocletInvoker.java:143)
> at com.sun.tools.javadoc.Start.parseAndExecute(Start.java:340)
> at com.sun.tools.javadoc.Start.begin(Start.java:128)
> at com.sun.tools.javadoc.Main.execute(Main.java:41)
> at com.sun.tools.javadoc.Main.main(Main.java:31)
>
> Command line was: "C:\Program
> Files\Java\jdk1.6.0_20\jre\..\bin\javadoc.exe" @options @packages
> @argfile
>
> Refer to the generated Javadoc files in
> 'C:\ci\svn\isvu\razmjena-aai\trunk\target\site\apidocs' dir.
>
> [INFO]
>
------------------------------------------------------------------------
> [INFO] For more information, run Maven with the -e switch
> [INFO]
>
------------------------------------------------------------------------
> [INFO] Total time: 1 minute 50 seconds
> [INFO] Finished at: Thu May 20 17:55:53 CEST 2010
> [INFO] Final Memory: 108M/453M
> [INFO]
>
------------------------------------------------------------------------
>
>
> Here is javadoc plugin configuration:
> <plugin>
> <groupId>org.apache.maven.plugins</groupId>
> <artifactId>maven-javadoc-plugin</artifactId>
> <version>2.7</version>
> </plugin>
>
>
> mvn --version:
> Apache Maven 2.2.1 (r801777; 2009-08-06 21:16:01+0200)
> Java version: 1.6.0_20
> Java home: C:\Program Files\Java\jdk1.6.0_20\jre
> Default locale: hr_HR, platform encoding: Cp1250
> OS name: "windows 7" version: "6.1" arch: "amd64" Family: "windows"
>
>
> How to solve this?
>
>
> Thanks in advance.
>
> Regards,
> Denis Kranjcec
>
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