Para complementar a dúvida, talvez o erro do Guilherme seja o mesmo. Maven que utilizo é o apache-maven-3.3.9
Não funcionou na linha de comando no meu caso, então configurei a execução do goal no eclipse e executou sem problemas.
Estou em uma rede com proxy, configurei o proxy no .M2 e mesmo assim não funcionou.
Modifiquei a versão do jetty e o problema não foi solucionado, se alguém tiver uma luz... para entender esse problema. Obrigado.
O erro que tive no prompt foi:
Downloaded: https://repo.maven.apache.org/maven2/org/eclipse/jetty/websocket/websocket-servlet/9.4.0
.RC1/websocket-servlet-9.4.0.RC1.jar (18 KB at 3.5 KB/sec)
[WARNING] Error injecting: org.eclipse.jetty.maven.plugin.JettyRunMojo
java.lang.TypeNotPresentException: Type org.eclipse.jetty.maven.plugin.JettyRunMojo not present
at org.eclipse.sisu.space.URLClassSpace.loadClass(URLClassSpace.java:147)
at org.eclipse.sisu.space.NamedClass.load(NamedClass.java:46)
at org.eclipse.sisu.space.AbstractDeferredClass.get(AbstractDeferredClass.java:48)
at com.google.inject.internal.ProviderInternalFactory.provision(ProviderInternalFactory.java
:81)
at com.google.inject.internal.InternalFactoryToInitializableAdapter.provision(InternalFactor
yToInitializableAdapter.java:53)
at com.google.inject.internal.ProviderInternalFactory$1.call(ProviderInternalFactory.java:65
)
at com.google.inject.internal.ProvisionListenerStackCallback$Provision.provision(ProvisionLi
stenerStackCallback.java:115)
at org.eclipse.sisu.bean.BeanScheduler$Activator.onProvision(BeanScheduler.java:176)
at com.google.inject.internal.ProvisionListenerStackCallback$Provision.provision(ProvisionLi
stenerStackCallback.java:126)
at com.google.inject.internal.ProvisionListenerStackCallback.provision(ProvisionListenerStac
kCallback.java:68)
at com.google.inject.internal.ProviderInternalFactory.circularGet(ProviderInternalFactory.ja
va:63)
at com.google.inject.internal.InternalFactoryToInitializableAdapter.get(InternalFactoryToIni
tializableAdapter.java:45)
at com.google.inject.internal.InjectorImpl$2$1.call(InjectorImpl.java:1016)
at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1092)
at com.google.inject.internal.InjectorImpl$2.get(InjectorImpl.java:1012)
at org.eclipse.sisu.inject.Guice4$1.get(Guice4.java:162)
at org.eclipse.sisu.inject.LazyBeanEntry.getValue(LazyBeanEntry.java:81)
at org.eclipse.sisu.plexus.LazyPlexusBean.getValue(LazyPlexusBean.java:51)
at org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:263)
at org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:255)
at org.apache.maven.plugin.internal.DefaultMavenPluginManager.getConfiguredMojo(DefaultMaven
PluginManager.java:517)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.j
ava:121)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:207)
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(LifecycleModuleBu
ilder.java:116)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBu
ilder.java:80)
at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(Si
ngleThreadedBuilder.java:51)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:863)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:199)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
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: java.lang.UnsupportedClassVersionError: org/eclipse/jetty/maven/plugin/JettyRunMojo : Uns
upported major.minor version 52.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClassFromSelf(ClassRealm.java:401)
at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.ja
va:42)
at org.codehaus.plexus.classworlds.realm.ClassRealm.unsynchronizedLoadClass(ClassRealm.java:
271)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:247)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:239)
at org.eclipse.sisu.space.URLClassSpace.loadClass(URLClassSpace.java:139)
... 42 more
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 22.781 s
[INFO] Finished at: 2016-12-07T09:57:22-02:00
[INFO] Final Memory: 13M/368M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.eclipse.jetty:jetty-maven-plugin:9.4.0.RC1:run (default-cli) on p
roject lojaweb: Execution default-cli of goal org.eclipse.jetty:jetty-maven-plugin:9.4.0.RC1:run fai
led: Unable to load the mojo 'run' in the plugin 'org.eclipse.jetty:jetty-maven-plugin:9.4.0.RC1' du
e to an API incompatibility: org.codehaus.plexus.component.repository.exception.ComponentLookupExcep
tion: org/eclipse/jetty/maven/plugin/JettyRunMojo : Unsupported major.minor version 52.0
[ERROR] -----------------------------------------------------
[ERROR] realm = plugin>org.eclipse.jetty:jetty-maven-plugin:9.4.0.RC1
[ERROR] strategy = org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy
[ERROR] urls[0] = file:/C:/Users/txavier/.m2/repository/org/eclipse/jetty/jetty-maven-plugin/9.4.0.R
C1/jetty-maven-plugin-9.4.0.RC1.jar
[ERROR] urls[1] = file:/C:/Users/txavier/.m2/repository/org/sonatype/sisu/sisu-inject-bean/2.1.1/sis
u-inject-bean-2.1.1.jar
[ERROR] urls[2] = file:/C:/Users/txavier/.m2/repository/org/sonatype/sisu/sisu-guice/2.9.4/sisu-guic
e-2.9.4-no_aop.jar
[ERROR] urls[3] = file:/C:/Users/txavier/.m2/repository/org/codehaus/plexus/plexus-utils/2.0.6/plexu
s-utils-2.0.6.jar
[ERROR] urls[4] = file:/C:/Users/txavier/.m2/repository/org/sonatype/aether/aether-util/1.11/aether-
util-1.11.jar
[ERROR] urls[5] = file:/C:/Users/txavier/.m2/repository/org/codehaus/plexus/plexus-interpolation/1.1
4/plexus-interpolation-1.14.jar
[ERROR] urls[6] = file:/C:/Users/txavier/.m2/repository/org/codehaus/plexus/plexus-component-annotat
ions/1.5.5/plexus-component-annotations-1.5.5.jar
[ERROR] urls[7] = file:/C:/Users/txavier/.m2/repository/org/sonatype/plexus/plexus-sec-dispatcher/1.
3/plexus-sec-dispatcher-1.3.jar
[ERROR] urls[8] = file:/C:/Users/txavier/.m2/repository/org/sonatype/plexus/plexus-cipher/1.4/plexus
-cipher-1.4.jar
[ERROR] urls[9] = file:/C:/Users/txavier/.m2/repository/org/apache/maven/plugin-tools/maven-plugin-t
ools-api/3.4/maven-plugin-tools-api-3.4.jar
[ERROR] urls[10] = file:/C:/Users/txavier/.m2/repository/backport-util-concurrent/backport-util-conc
urrent/3.1/backport-util-concurrent-3.1.jar
[ERROR] urls[11] = file:/C:/Users/txavier/.m2/repository/org/eclipse/jetty/jetty-util/9.4.0.RC1/jett
y-util-9.4.0.RC1.jar
[ERROR] urls[12] = file:/C:/Users/txavier/.m2/repository/org/eclipse/jetty/jetty-webapp/9.4.0.RC1/je
tty-webapp-9.4.0.RC1.jar
[ERROR] urls[13] = file:/C:/Users/txavier/.m2/repository/org/eclipse/jetty/jetty-xml/9.4.0.RC1/jetty
-xml-9.4.0.RC1.jar
[ERROR] urls[14] = file:/C:/Users/txavier/.m2/repository/org/eclipse/jetty/jetty-servlet/9.4.0.RC1/j
etty-servlet-9.4.0.RC1.jar
[ERROR] urls[15] = file:/C:/Users/txavier/.m2/repository/org/eclipse/jetty/jetty-quickstart/9.4.0.RC
1/jetty-quickstart-9.4.0.RC1.jar
[ERROR] urls[16] = file:/C:/Users/txavier/.m2/repository/org/eclipse/jetty/jetty-jaas/9.4.0.RC1/jett
y-jaas-9.4.0.RC1.jar
[ERROR] urls[17] = file:/C:/Users/txavier/.m2/repository/org/eclipse/jetty/jetty-security/9.4.0.RC1/
jetty-security-9.4.0.RC1.jar
[ERROR] urls[18] = file:/C:/Users/txavier/.m2/repository/org/eclipse/jetty/jetty-plus/9.4.0.RC1/jett
y-plus-9.4.0.RC1.jar
[ERROR] urls[19] = file:/C:/Users/txavier/.m2/repository/org/eclipse/jetty/jetty-jndi/9.4.0.RC1/jett
y-jndi-9.4.0.RC1.jar
[ERROR] urls[20] = file:/C:/Users/txavier/.m2/repository/org/eclipse/jetty/jetty-server/9.4.0.RC1/je
tty-server-9.4.0.RC1.jar
[ERROR] urls[21] = file:/C:/Users/txavier/.m2/repository/javax/servlet/javax.servlet-api/3.1.0/javax
.servlet-api-3.1.0.jar
[ERROR] urls[22] = file:/C:/Users/txavier/.m2/repository/org/eclipse/jetty/jetty-http/9.4.0.RC1/jett
y-http-9.4.0.RC1.jar
[ERROR] urls[23] = file:/C:/Users/txavier/.m2/repository/org/eclipse/jetty/jetty-io/9.4.0.RC1/jetty-
io-9.4.0.RC1.jar
[ERROR] urls[24] = file:/C:/Users/txavier/.m2/repository/org/eclipse/jetty/jetty-jmx/9.4.0.RC1/jetty
-jmx-9.4.0.RC1.jar
[ERROR] urls[25] = file:/C:/Users/txavier/.m2/repository/org/eclipse/jetty/jetty-annotations/9.4.0.R
C1/jetty-annotations-9.4.0.RC1.jar
[ERROR] urls[26] = file:/C:/Users/txavier/.m2/repository/javax/annotation/javax.annotation-api/1.2/j
avax.annotation-api-1.2.jar
[ERROR] urls[27] = file:/C:/Users/txavier/.m2/repository/org/ow2/asm/asm/5.1/asm-5.1.jar
[ERROR] urls[28] = file:/C:/Users/txavier/.m2/repository/org/ow2/asm/asm-commons/5.1/asm-commons-5.1
.jar
[ERROR] urls[29] = file:/C:/Users/txavier/.m2/repository/org/ow2/asm/asm-tree/5.1/asm-tree-5.1.jar
[ERROR] urls[30] = file:/C:/Users/txavier/.m2/repository/org/eclipse/jetty/websocket/javax-websocket
-server-impl/9.4.0.RC1/javax-websocket-server-impl-9.4.0.RC1.jar
[ERROR] urls[31] = file:/C:/Users/txavier/.m2/repository/org/eclipse/jetty/websocket/javax-websocket
-client-impl/9.4.0.RC1/javax-websocket-client-impl-9.4.0.RC1.jar
[ERROR] urls[32] = file:/C:/Users/txavier/.m2/repository/javax/websocket/javax.websocket-api/1.0/jav
ax.websocket-api-1.0.jar
[ERROR] urls[33] = file:/C:/Users/txavier/.m2/repository/org/eclipse/jetty/websocket/websocket-serve
r/9.4.0.RC1/websocket-server-9.4.0.RC1.jar
[ERROR] urls[34] = file:/C:/Users/txavier/.m2/repository/org/eclipse/jetty/websocket/websocket-commo
n/9.4.0.RC1/websocket-common-9.4.0.RC1.jar
[ERROR] urls[35] = file:/C:/Users/txavier/.m2/repository/org/eclipse/jetty/websocket/websocket-api/9
.4.0.RC1/websocket-api-9.4.0.RC1.jar
[ERROR] urls[36] = file:/C:/Users/txavier/.m2/repository/org/eclipse/jetty/websocket/websocket-clien
t/9.4.0.RC1/websocket-client-9.4.0.RC1.jar
[ERROR] urls[37] = file:/C:/Users/txavier/.m2/repository/org/eclipse/jetty/websocket/websocket-servl
et/9.4.0.RC1/websocket-servlet-9.4.0.RC1.jar
[ERROR] urls[38] = file:/C:/Users/txavier/.m2/repository/org/eclipse/jetty/apache-jsp/9.4.0.RC1/apac
he-jsp-9.4.0.RC1.jar
[ERROR] urls[39] = file:/C:/Users/txavier/.m2/repository/org/eclipse/jetty/toolchain/jetty-schemas/3
.1/jetty-schemas-3.1.jar
[ERROR] urls[40] = file:/C:/Users/txavier/.m2/repository/org/mortbay/jasper/apache-jsp/8.5.4/apache-
jsp-8.5.4.jar
[ERROR] urls[41] = file:/C:/Users/txavier/.m2/repository/org/mortbay/jasper/apache-el/8.5.4/apache-e
l-8.5.4.jar
[ERROR] urls[42] = file:/C:/Users/txavier/.m2/repository/org/eclipse/jdt/core/compiler/ecj/4.4.2/ecj
-4.4.2.jar
[ERROR] urls[43] = file:/C:/Users/txavier/.m2/repository/org/eclipse/jetty/apache-jstl/9.4.0.RC1/apa
che-jstl-9.4.0.RC1.jar
[ERROR] urls[44] = file:/C:/Users/txavier/.m2/repository/org/apache/taglibs/taglibs-standard-spec/1.
2.5/taglibs-standard-spec-1.2.5.jar
[ERROR] urls[45] = file:/C:/Users/txavier/.m2/repository/org/apache/taglibs/taglibs-standard-impl/1.
2.5/taglibs-standard-impl-1.2.5.jar
[ERROR] urls[46] = file:/C:/Users/txavier/.m2/repository/javax/transaction/javax.transaction-api/1.2
/javax.transaction-api-1.2.jar
[ERROR] Number of foreign imports: 1
[ERROR] import: Entry[import from realm ClassRealm[maven.api, parent: null]]
[ERROR]
[ERROR] -----------------------------------------------------
[ERROR] -> [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 arti
cles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginContainerException
