According to: http://maven.apache.org/download.cgi Java7 is required I personally was able to build RC1 using maven 3.3.9 and oracle java7.
It seems your maven was built using java8 .... where you have downloaded it? On Fri, Mar 4, 2016 at 5:23 PM, Peter Dähn <da...@vcrp.de> wrote: > different Error... > > mvn --version > Apache Maven 3.3.9 (bb52d8502b132ec0a5a3f4c09453c07478323dc5; > 2015-11-10T17:41:47+01:00) > Maven home: /usr/local/apache-maven-3.3.9 > Java version: 1.7.0_60, vendor: Oracle Corporation > Java home: /usr/lib/jvm/jdk1.7.0_60/jre > Default locale: de_DE, platform encoding: UTF-8 > OS name: "linux", version: "3.13.0-74-lowlatency", arch: "amd64", family: > "unix" > > mvn clean install > Exception in thread "main" java.lang.UnsupportedClassVersionError: > org/apache/maven/cli/MavenCli : Unsupported major.minor version 51.0 > at java.lang.ClassLoader.defineClass1(Native Method) > at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631) > at java.lang.ClassLoader.defineClass(ClassLoader.java:615) > at > java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141) > at java.net.URLClassLoader.defineClass(URLClassLoader.java:283) > at java.net.URLClassLoader.access$000(URLClassLoader.java:58) > at java.net.URLClassLoader$1.run(URLClassLoader.java:197) > at java.security.AccessController.doPrivileged(Native Method) > at java.net.URLClassLoader.findClass(URLClassLoader.java:190) > at > org.codehaus.plexus.classworlds.realm.ClassRealm.loadClassFromSelf(ClassRealm.java:401) > at > org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:42) > at > org.codehaus.plexus.classworlds.realm.ClassRealm.unsynchronizedLoadClass(ClassRealm.java:271) > at > org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:254) > at > org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:239) > at > org.codehaus.plexus.classworlds.launcher.Launcher.getMainClass(Launcher.java:144) > at > org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:266) > 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) > > Do I need Java8? > > Greetings Peter > > > > Am 04.03.2016 um 11:57 schrieb Maxim Solodovnik: > >> Can you double-check with latest maven (3.3.9 if I'm not mistaken) >> >> WBR, Maxim >> (from mobile, sorry for the typos) >> On Mar 4, 2016 16:47, "Peter Dähn" <da...@vcrp.de> wrote: >> >> Hi Maxime, >>> >>> sorry I was one day out of office... >>> >>> and sorry again, I did (somehow) the checkout from the trunk... >>> >>> By now i made a checkout from RC1 >>> >>> svn checkout >>> https://svn.apache.org/repos/asf/openmeetings/application/tags/3.1.0RC1/ >>> cd 3.1.0RC1/ >>> mvn clean install >>> >>> [INFO] Scanning for projects... >>> [INFO] >>> ------------------------------------------------------------------------ >>> [INFO] Reactor Build Order: >>> [INFO] >>> [INFO] Openmeetings >>> [INFO] Openmeetings Util >>> [INFO] Openmeetings DB >>> [INFO] Openmeetings Core >>> [INFO] Openmeetings Install >>> [INFO] Openmeetings Service >>> [INFO] Openmeetings Webservices >>> [INFO] Openmeetings Web >>> [INFO] Openmeetings Flash >>> [INFO] Openmeetings Screen Sharing applet >>> [INFO] Openmeetings Server >>> [INFO] >>> [INFO] Using the builder >>> >>> org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder >>> with a thread count of 1 >>> [INFO] >>> [INFO] >>> ------------------------------------------------------------------------ >>> [INFO] Building Openmeetings 3.1.0-SNAPSHOT >>> [INFO] >>> ------------------------------------------------------------------------ >>> Downloading: >>> >>> https://repository.apache.org/content/groups/snapshots/org/apache/rat/apache-rat-plugin/0.12-SNAPSHOT/maven-metadata.xml >>> [WARNING] Could not transfer metadata >>> org.apache.rat:apache-rat-plugin:0.12-SNAPSHOT/maven-metadata.xml from/to >>> apache-snapshots (https://repository.apache.org/content/groups/snapshots >>> ): >>> java.lang.RuntimeException: Could not generate DH keypair >>> [WARNING] Failure to transfer >>> org.apache.rat:apache-rat-plugin:0.12-SNAPSHOT/maven-metadata.xml from >>> https://repository.apache.org/content/groups/snapshots was cached in the >>> local repository, resolution will not be reattempted until the update >>> interval of apache-snapshots has elapsed or updates are forced. Original >>> error: Could not transfer metadata >>> org.apache.rat:apache-rat-plugin:0.12-SNAPSHOT/maven-metadata.xml from/to >>> apache-snapshots (https://repository.apache.org/content/groups/snapshots >>> ): >>> java.lang.RuntimeException: Could not generate DH keypair >>> Downloading: >>> >>> https://repository.apache.org/content/groups/snapshots/org/apache/rat/apache-rat-plugin/0.12-SNAPSHOT/apache-rat-plugin-0.12-SNAPSHOT.pom >>> [INFO] >>> ------------------------------------------------------------------------ >>> [INFO] Reactor Summary: >>> [INFO] >>> [INFO] Openmeetings ...................................... FAILURE [ >>> 5.147 s] >>> [INFO] Openmeetings Util ................................. SKIPPED >>> [INFO] Openmeetings DB ................................... SKIPPED >>> [INFO] Openmeetings Core ................................. SKIPPED >>> [INFO] Openmeetings Install .............................. SKIPPED >>> [INFO] Openmeetings Service .............................. SKIPPED >>> [INFO] Openmeetings Webservices .......................... SKIPPED >>> [INFO] Openmeetings Web .................................. SKIPPED >>> [INFO] Openmeetings Flash ................................ SKIPPED >>> [INFO] Openmeetings Screen Sharing applet ................ SKIPPED >>> [INFO] Openmeetings Server ............................... SKIPPED >>> [INFO] >>> ------------------------------------------------------------------------ >>> [INFO] BUILD FAILURE >>> [INFO] >>> ------------------------------------------------------------------------ >>> [INFO] Total time: 13.480 s >>> [INFO] Finished at: 2016-03-04T11:19:11+01:00 >>> [INFO] Final Memory: 15M/159M >>> [INFO] >>> ------------------------------------------------------------------------ >>> [ERROR] Plugin org.apache.rat:apache-rat-plugin:0.12-SNAPSHOT or one of >>> its dependencies could not be resolved: Failed to read artifact >>> descriptor >>> for org.apache.rat:apache-rat-plugin:jar:0.12-SNAPSHOT: Could not >>> transfer >>> artifact org.apache.rat:apache-rat-plugin:pom:0.12-SNAPSHOT from/to >>> apache-snapshots (https://repository.apache.org/content/groups/snapshots >>> ): >>> java.lang.RuntimeException: Could not generate DH keypair: Prime size >>> must >>> be multiple of 64, and can only range from 512 to 1024 (inclusive) -> >>> [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/PluginResolutionException >>> >>> >>> Download and unpack the tar.gz results in the same error... >>> >>> Server runs Ubuntu 14.04 (LTS) >>> >>> mvn --version >>> Apache Maven 3.2.1 (ea8b2b07643dbb1b84b6d16e1f08391b666bc1e9; >>> 2014-02-14T18:37:52+01:00) >>> Maven home: /usr/share/maven3 >>> Java version: 1.7.0_60, vendor: Oracle Corporation >>> Java home: /usr/lib/jvm/jdk1.7.0_60/jre >>> Default locale: de_DE, platform encoding: UTF-8 >>> OS name: "linux", version: "3.13.0-74-lowlatency", arch: "amd64", family: >>> "unix" >>> >>> >>> any Ideas? >>> >>> Greetings Peter >>> >>> >>> Am 03.03.2016 um 06:39 schrieb Maxim Solodovnik: >>> >>> Hello Peter, >>>> >>>> what were your steps? >>>> Surprisingly you are building "Openmeetings 4.0.0-SNAPSHOT" (not 3.1.0) >>>> this particular error "Could not generate DH keypair: Prime size must be >>>> multiple of 64, and can only range from 512 to 1024" might be caused by >>>> corporate proxy server sitting in the middle .... (never saw error like >>>> this before :( ) >>>> >>>> I just tried as follows: >>>> 1) download >>>> >>>> >>>> https://dist.apache.org/repos/dist/dev/openmeetings/3.1.0/rc1/src/apache-openmeetings-3.1.0-src.tar.gz >>>> 2) unpack to the new folder >>>> 3) run "mvn clean install" >>>> everything seems to work as expected >>>> >>>> >>>> On Wed, Mar 2, 2016 at 3:30 PM, Peter Dähn <da...@vcrp.de> wrote: >>>> >>>> Hi Maxim, >>>> >>>>> unfortunately I'm unable to build RC1. >>>>> >>>>> I got the following error during build: >>>>> >>>>> mvn clean install >>>>> [INFO] Scanning for projects... >>>>> [INFO] >>>>> >>>>> ------------------------------------------------------------------------ >>>>> [INFO] Reactor Build Order: >>>>> [INFO] >>>>> [INFO] Openmeetings >>>>> [INFO] Openmeetings Util >>>>> [INFO] Openmeetings DB >>>>> [INFO] Openmeetings Core >>>>> [INFO] Openmeetings Install >>>>> [INFO] Openmeetings Service >>>>> [INFO] Openmeetings Webservices >>>>> [INFO] Openmeetings Web >>>>> [INFO] Openmeetings Flash >>>>> [INFO] Openmeetings Screen Sharing applet >>>>> [INFO] Openmeetings Server >>>>> [INFO] >>>>> [INFO] Using the builder >>>>> >>>>> >>>>> org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder >>>>> with a thread count of 1 >>>>> [INFO] >>>>> [INFO] >>>>> >>>>> ------------------------------------------------------------------------ >>>>> [INFO] Building Openmeetings 4.0.0-SNAPSHOT >>>>> [INFO] >>>>> >>>>> ------------------------------------------------------------------------ >>>>> Downloading: >>>>> >>>>> >>>>> https://repository.apache.org/content/groups/snapshots/org/apache/rat/apache-rat-plugin/0.12-SNAPSHOT/maven-metadata.xml >>>>> [WARNING] Could not transfer metadata >>>>> org.apache.rat:apache-rat-plugin:0.12-SNAPSHOT/maven-metadata.xml >>>>> from/to >>>>> apache-snapshots ( >>>>> https://repository.apache.org/content/groups/snapshots >>>>> ): >>>>> java.lang.RuntimeException: Could not generate DH keypair >>>>> [WARNING] Failure to transfer >>>>> org.apache.rat:apache-rat-plugin:0.12-SNAPSHOT/maven-metadata.xml from >>>>> https://repository.apache.org/content/groups/snapshots was cached in >>>>> the >>>>> local repository, resolution will not be reattempted until the update >>>>> interval of apache-snapshots has elapsed or updates are forced. >>>>> Original >>>>> error: Could not transfer metadata >>>>> org.apache.rat:apache-rat-plugin:0.12-SNAPSHOT/maven-metadata.xml >>>>> from/to >>>>> apache-snapshots ( >>>>> https://repository.apache.org/content/groups/snapshots >>>>> ): >>>>> java.lang.RuntimeException: Could not generate DH keypair >>>>> Downloading: >>>>> >>>>> >>>>> https://repository.apache.org/content/groups/snapshots/org/apache/rat/apache-rat-plugin/0.12-SNAPSHOT/apache-rat-plugin-0.12-SNAPSHOT.pom >>>>> [INFO] >>>>> >>>>> ------------------------------------------------------------------------ >>>>> [INFO] Reactor Summary: >>>>> [INFO] >>>>> [INFO] Openmeetings ...................................... FAILURE [ >>>>> 2.059 s] >>>>> [INFO] Openmeetings Util ................................. SKIPPED >>>>> [INFO] Openmeetings DB ................................... SKIPPED >>>>> [INFO] Openmeetings Core ................................. SKIPPED >>>>> [INFO] Openmeetings Install .............................. SKIPPED >>>>> [INFO] Openmeetings Service .............................. SKIPPED >>>>> [INFO] Openmeetings Webservices .......................... SKIPPED >>>>> [INFO] Openmeetings Web .................................. SKIPPED >>>>> [INFO] Openmeetings Flash ................................ SKIPPED >>>>> [INFO] Openmeetings Screen Sharing applet ................ SKIPPED >>>>> [INFO] Openmeetings Server ............................... SKIPPED >>>>> [INFO] >>>>> >>>>> ------------------------------------------------------------------------ >>>>> [INFO] BUILD FAILURE >>>>> [INFO] >>>>> >>>>> ------------------------------------------------------------------------ >>>>> [INFO] Total time: 4.186 s >>>>> [INFO] Finished at: 2016-03-02T10:30:47+01:00 >>>>> [INFO] Final Memory: 14M/163M >>>>> [INFO] >>>>> >>>>> ------------------------------------------------------------------------ >>>>> [ERROR] Plugin org.apache.rat:apache-rat-plugin:0.12-SNAPSHOT or one of >>>>> its dependencies could not be resolved: Failed to read artifact >>>>> descriptor >>>>> for org.apache.rat:apache-rat-plugin:jar:0.12-SNAPSHOT: Could not >>>>> transfer >>>>> artifact org.apache.rat:apache-rat-plugin:pom:0.12-SNAPSHOT from/to >>>>> apache-snapshots ( >>>>> https://repository.apache.org/content/groups/snapshots >>>>> ): >>>>> java.lang.RuntimeException: Could not generate DH keypair: Prime size >>>>> must >>>>> be multiple of 64, and can only range from 512 to 1024 (inclusive) -> >>>>> [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/PluginResolutionException >>>>> >>>>> What went wrong? Any Ideas? >>>>> >>>>> Greetings Peter >>>>> >>>>> >>>>> Am 01.03.2016 um 19:12 schrieb Maxim Solodovnik: >>>>> >>>>> Dear OpenMeetings Community, >>>>> >>>>>> I would like to start a vote about releasing Apache OpenMeetings 3.1.0 >>>>>> RC1 >>>>>> >>>>>> SOAP/REST API was implemented using CXF (Axis2 was removed from the >>>>>> stack) >>>>>> Build system is now maven (not ant), SWF client is improved >>>>>> >>>>>> Main changes are covered in the >>>>>> Readme: >>>>>> >>>>>> >>>>>> >>>>>> https://svn.apache.org/repos/asf/openmeetings/application/tags/3.1.0RC1/README >>>>>> >>>>>> Full Changelog: >>>>>> >>>>>> >>>>>> >>>>>> https://svn.apache.org/repos/asf/openmeetings/application/tags/3.1.0RC1/CHANGELOG >>>>>> >>>>>> Release artifacts: >>>>>> https://dist.apache.org/repos/dist/dev/openmeetings/3.1.0/rc1/ >>>>>> >>>>>> Tag: >>>>>> >>>>>> https://svn.apache.org/repos/asf/openmeetings/application/tags/3.1.0RC1/ >>>>>> >>>>>> PGP release keys (signed using C467526E): >>>>>> https://dist.apache.org/repos/dist/dev/openmeetings/3.1.0/rc1/KEYS >>>>>> >>>>>> Changes: 77 issues were fixed ( >>>>>> >>>>>> >>>>>> >>>>>> https://issues.apache.org/jira/secure/ReleaseNote.jspa?version=12333397&projectId=12312720 >>>>>> ): >>>>>> >>>>>> Vote will be open until Saturday 2016/03/05 23:59 GMT. >>>>>> >>>>>> [ ] +1 approve >>>>>> [ ] +0 no opinion >>>>>> [ ] -1 disapprove (and reason why) >>>>>> >>>>>> My vote is +1. >>>>>> >>>>>> >>>>>> >>>>>> -- WBR Maxim aka solomax
