OS: openSUSE Leap 4.2
IDE: Eclipse Mars
JDK Installed: Open JDK 1.8 & Oracle JDK 1.6
I have to add some new feature to an existed system recently. My environment is as above.
This system have 5 separate projects with their root folder setting side by side, and using maven to manage the build cycle.
The JRE version of the deploy-environment is Oracle JDK1.6, so I have to downgrade it in my develop env after the new feature have been implemented and successfully tested with JDK1.8, though the folder structure of the five projects were not arranged according to maven recommendation I think.
When I changed Installed JDK from 1.8 to 1.6, trying to run the system with maven-jetty-plugin(jetty:run), I got the following error output:
...
[DEBUG] =======================================================================
[INFO]
[INFO] >>> maven-jetty-plugin:6.1.25:run (default-cli) > test-compile @ yingfan-cpm-webapp >>>
[DEBUG] Could not find metadata yingfan:yingfan-cpm-core:0.0.1-SNAPSHOT/maven-metadata.xml in local (/home/lfree/.m2.3.2.5/repository)
[DEBUG] Could not find metadata yingfan:yingfan-cpm-core:0.0.1-SNAPSHOT/maven-metadata.xml in local (/home/lfree/.m2.3.2.5/repository)
[WARNING] The POM for yingfan:yingfan-cpm-core:jar:0.0.1-SNAPSHOT is missing, no dependency information available
[DEBUG] Dependency collection stats: {ConflictMarker.analyzeTime=1, ConflictMarker.markTime=0, ConflictMarker.nodeCount=12, ConflictIdSorter.graphTime=0, ConflictIdSorter.topsortTime=0, ConflictIdSorter.conflictIdCount=10, ConflictIdSorter.conflictIdCycleCount=0, ConflictResolver.totalTime=3, ConflictResolver.conflictItemCount=11, DefaultDependencyCollector.collectTime=212, DefaultDependencyCollector.transformTime=5}
[DEBUG] yingfan:yingfan-cpm-webapp:war:0.0.1-SNAPSHOT
[DEBUG] yingfan:yingfan-cpm-core:jar:0.0.1-SNAPSHOT:compile
[DEBUG] com.lowagie:itext:jar:2.1.7:compile
[DEBUG] bouncycastle:bcmail-jdk14:jar:138:compile
[DEBUG] bouncycastle:bcprov-jdk14:jar:138:compile
[DEBUG] org.bouncycastle:bctsp-jdk14:jar:1.38:compile
[DEBUG] org.bouncycastle:bcprov-jdk14:jar:1.38:compile
[DEBUG] org.bouncycastle:bcmail-jdk14:jar:1.38:compile
[DEBUG] org.json:json:jar:20160212:compile
[DEBUG] javax.servlet:jstl:jar:1.2:compile
[DEBUG] ant:ant:jar:1.6.5:compile
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 4.121 s
[INFO] Finished at: 2016-04-15T18:52:09+08:00
[INFO] Final Memory: 10M/118M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal on project yingfan-cpm-webapp: Could not resolve dependencies for project yingfan:yingfan-cpm-webapp:war:0.0.1-SNAPSHOT: Could not find artifact yingfan:yingfan-cpm-core:jar:0.0.1-SNAPSHOT -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal on project yingfan-cpm-webapp: Could not resolve dependencies for project yingfan:yingfan-cpm-webapp:war:0.0.1-SNAPSHOT: Could not find artifact yingfan:yingfan-cpm-core:jar:0.0.1-SNAPSHOT
at org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.getDependencies(Life cycleDependencyResolver.java:220)
at org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.resolveProjectDepend encies(LifecycleDependencyResolver.java:127)
at org.apache.maven.lifecycle.internal.MojoExecutor.ensureDependenciesAreResolved(MojoE xecutor.java:257)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:200)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
at org.apache.maven.lifecycle.internal.MojoExecutor.executeForkedExecutions(MojoExecuto r.java:364)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:198)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleMod uleBuilder.java:116)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleMod uleBuilder.java:80)
at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.bui ld(SingleThreadedBuilder.java:51)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:1 20)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:355)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:155)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:584)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:216)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:160)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25 )
at java.lang.reflect.Method.invoke(Method.java:597)
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.project.DependencyResolutionException: Could not resolve dependencies for project yingfan:yingfan-cpm-webapp:war:0.0.1-SNAPSHOT: Could not find artifact yingfan:yingfan-cpm-core:jar:0.0.1-SNAPSHOT
at org.apache.maven.project.DefaultProjectDependenciesResolver.resolve(DefaultProjectDe pendenciesResolver.java:211)
at org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.getDependencies(Life cycleDependencyResolver.java:195)
... 26 more
Caused by: org.eclipse.aether.resolution.DependencyResolutionException: Could not find artifact yingfan:yingfan-cpm-core:jar:0.0.1-SNAPSHOT
at org.eclipse.aether.internal.impl.DefaultRepositorySystem.resolveDependencies(Default RepositorySystem.java:384)
at org.apache.maven.project.DefaultProjectDependenciesResolver.resolve(DefaultProjectDe pendenciesResolver.java:205)
... 27 more
Caused by: org.eclipse.aether.resolution.ArtifactResolutionException: Could not find artifact yingfan:yingfan-cpm-core:jar:0.0.1-SNAPSHOT
at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(DefaultArtifactReso lver.java:444)
at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifacts(DefaultArt ifactResolver.java:246)
at org.eclipse.aether.internal.impl.DefaultRepositorySystem.resolveDependencies(Default RepositorySystem.java:367)
... 28 more
Caused by: org.eclipse.aether.transfer.ArtifactNotFoundException: Could not find artifact yingfan:yingfan-cpm-core:jar:0.0.1-SNAPSHOT
at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(DefaultArtifactReso lver.java:434)
... 30 more
[ERROR]
[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/DependencyResolutionException
With JDK 1.8, the output is like this:
</configuration>
[DEBUG] =======================================================================
[INFO]
[INFO] >>> maven-jetty-plugin:6.1.25:run (default-cli) > test-compile @ yingfan-cpm-webapp >>>
[DEBUG] Dependency collection stats: {ConflictMarker.analyzeTime=1, ConflictMarker.markTime=0, ConflictMarker.nodeCount=156, ConflictIdSorter.graphTime=1, ConflictIdSorter.topsortTime=0, ConflictIdSorter.conflictIdCount=76, ConflictIdSorter.conflictIdCycleCount=0, ConflictResolver.totalTime=10, ConflictResolver.conflictItemCount=138, DefaultDependencyCollector.collectTime=258, DefaultDependencyCollector.transformTime=14}
[DEBUG] yingfan:yingfan-cpm-webapp:war:0.0.1-SNAPSHOT
[DEBUG] yingfan:yingfan-cpm-core:jar:0.0.1-SNAPSHOT:compile
[DEBUG] org.springframework:spring-core:jar:3.2.5.RELEASE:compile
[DEBUG] org.springframework:spring-beans:jar:3.2.5.RELEASE:compile
[DEBUG] org.springframework:spring-context:jar:3.2.5.RELEASE:compile
[DEBUG] org.springframework:spring-aop:jar:3.2.5.RELEASE:compile
[DEBUG] org.springframework:spring-expression:jar:3.2.5.RELEASE:compile
[DEBUG] org.springframework:spring-web:jar:3.2.5.RELEASE:compile
[DEBUG] aopalliance:aopalliance:jar:1.0:compile
[DEBUG] org.springframework:spring-tx:jar:3.2.5.RELEASE:compile
[DEBUG] org.springframework:spring-orm:jar:3.2.5.RELEASE:compile
[DEBUG] org.springframework:spring-context-support:jar:3.2.5.RELEASE:compile
yingfan-cpm-webapp and yingfan-cpm-core are two of the five projects all of which imported to my eclipse workspace.
Why with JDK1.6, the dependence of yingfan-cpm-web project to yingfan-cpm-core project can't be recognized correctly?
P.S. JDK version is the only difference of these two circumstances.
[INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------
The better if you can provide the detail of BUILD FAILURE error.
This could be because some of your classes cannot be compiled when change Java version from 8 to 6