我在本地 Karaf 4.0.2 安装的 mvn.cfg 文件中添加了一个新的 mvn url，如下所示:
org.ops4j.pax.url.mvn.repositories= \ http://repo1.maven.org/maven2@id=central, \ http://repository.springsource.com/maven/bundles/release@id=spring.ebr.release, \ http://repository.springsource.com/maven/bundles/external@id=spring.ebr.external, \ http://zodiac.springsource.com/maven/bundles/release@id=gemini, \ http://repository.apache.org/content/groups/snapshots-group@id=apache@snapshots@noreleases, \ https://oss.sonatype.org/content/repositories/snapshots@id=sonatype.snapshots.deploy@snapshots@noreleases, \ https://oss.sonatype.org/content/repositories/ops4j-snapshots@id=ops4j.sonatype.snapshots.deploy@snapshots@noreleases, \ http://repository.springsource.com/maven/bundles/external@id=spring-ebr-repository@snapshots@noreleases, \ http://jenkins:8081/artifactory/simple/repo/@id=central, \
http://artifactory.lsp.axiell.com/artifactory/maven-central@id=central, \ http://artifactory.lsp.axiell.com/artifactory/libs-snapshot-release@snapshots
基本上我现在感兴趣的是@snapshots 的最后一个。它包含一个功能 xml，指定我想要在本地 karaf 中安装的包。该存储库位于其他地方。
当我在 karaf 控制台中输入以下内容时:
功能:repo-add mvn:com.axiell.lsp.integrations/utils/1.0-SNAPSHOT/xml/features
我收到错误: karaf@root()> 功能:repo-add mvn:com.axiell.lsp.integrations/utils/1.0-SNAPSHOT/xml/features 添加功能 url mvn:com.axiell.lsp.integrations/utils/1.0-SNAPSHOT/xml/features 执行命令时出错:存储库规范为空字符串。 :mvn:com.axiell.lsp.integrations/utils/1.0-SNAPSHOT/xml/features
这是日志中的堆栈跟踪。
,framework=org.apache.felix.framework,uuid=a1dc4a95-fb3b-440d-a6fd-e458f91bedbb
2016-09-25 14:36:49,195 | ERROR | nsole user karaf | ShellUtil | 45 - org.apache.karaf.shell.core - 4.0.2 | Exception caught while executing command
java.io.IOException: Repository spec is empty string. : mvn:com.axiell.lsp.integrations/utils/1.0-20160925.111911-1/xml/features
at org.apache.karaf.features.internal.service.RepositoryImpl.load(RepositoryImpl.java:85)[8:org.apache.karaf.features.core:4.0.2]
at org.apache.karaf.features.internal.service.FeaturesServiceImpl.loadRepository(FeaturesServiceImpl.java:391)[8:org.apache.karaf.features.core:4.0.2]
at org.apache.karaf.features.internal.service.FeaturesServiceImpl.addRepository(FeaturesServiceImpl.java:411)[8:org.apache.karaf.features.core:4.0.2]
at org.apache.karaf.features.command.RepoAddCommand.doExecute(RepoAddCommand.java:50)[32:org.apache.karaf.features.command:4.0.2]
at org.apache.karaf.features.command.FeaturesCommandSupport.execute(FeaturesCommandSupport.java:37)[32:org.apache.karaf.features.command:4.0.2]
at org.apache.karaf.shell.impl.action.command.ActionCommand.execute(ActionCommand.java:83)[45:org.apache.karaf.shell.core:4.0.2]
at org.apache.karaf.shell.impl.console.osgi.secured.SecuredCommand.execute(SecuredCommand.java:67)[45:org.apache.karaf.shell.core:4.0.2]
at org.apache.karaf.shell.impl.console.osgi.secured.SecuredCommand.execute(SecuredCommand.java:87)[45:org.apache.karaf.shell.core:4.0.2]
at org.apache.felix.gogo.runtime.Closure.executeCmd(Closure.java:480)[45:org.apache.karaf.shell.core:4.0.2]
at org.apache.felix.gogo.runtime.Closure.executeStatement(Closure.java:406)[45:org.apache.karaf.shell.core:4.0.2]
at org.apache.felix.gogo.runtime.Pipe.run(Pipe.java:108)[45:org.apache.karaf.shell.core:4.0.2]
at org.apache.felix.gogo.runtime.Closure.execute(Closure.java:182)[45:org.apache.karaf.shell.core:4.0.2]
at org.apache.felix.gogo.runtime.Closure.execute(Closure.java:119)[45:org.apache.karaf.shell.core:4.0.2]
at org.apache.felix.gogo.runtime.CommandSessionImpl.execute(CommandSessionImpl.java:94)[45:org.apache.karaf.shell.core:4.0.2]
at org.apache.karaf.shell.impl.console.ConsoleSessionImpl.run(ConsoleSessionImpl.java:268)[45:org.apache.karaf.shell.core:4.0.2]
at java.lang.Thread.run(Thread.java:745)[:1.8.0_71]
Caused by: shaded.org.ops4j.lang.NullArgumentException: Repository spec is empty string.
at shaded.org.ops4j.lang.NullArgumentException.validateNotEmpty(NullArgumentException.java:109)
at org.ops4j.pax.url.mvn.internal.config.MavenRepositoryURL.<init>(MavenRepositoryURL.java:94)[7:org.ops4j.pax.url.mvn:2.4.3]
at org.ops4j.pax.url.mvn.internal.config.MavenConfigurationImpl.getRepositories(MavenConfigurationImpl.java:315)[7:org.ops4j.pax.url.mvn:2.4.3]
at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.selectRepositories(AetherBasedResolver.java:349)[7:org.ops4j.pax.url.mvn:2.4.3]
at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.resolve(AetherBasedResolver.java:523)[7:org.ops4j.pax.url.mvn:2.4.3]
at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.resolve(AetherBasedResolver.java:506)[7:org.ops4j.pax.url.mvn:2.4.3]
at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.resolve(AetherBasedResolver.java:481)[7:org.ops4j.pax.url.mvn:2.4.3]
at org.ops4j.pax.url.mvn.internal.Connection.getInputStream(Connection.java:123)[7:org.ops4j.pax.url.mvn:2.4.3]
at java.net.URL.openStream(URL.java:1045)[:1.8.0_71]
at org.apache.karaf.features.internal.service.RepositoryImpl.load(RepositoryImpl.java:80)[8:org.apache.karaf.features.core:4.0.2]
... 15 more
2016-09-25 14:36:56,109 | ERROR | nsole user karaf | ShellUtil | 45 - org.apache.karaf.shell.core - 4.0.2 | Exception caught while executing command
java.io.IOException: Repository spec is empty string. : mvn:com.axiell.lsp.integrations/utils/1.0-SNAPSHOT/xml/features
at org.apache.karaf.features.internal.service.RepositoryImpl.load(RepositoryImpl.java:85)[8:org.apache.karaf.features.core:4.0.2]
at org.apache.karaf.features.internal.service.FeaturesServiceImpl.loadRepository(FeaturesServiceImpl.java:391)[8:org.apache.karaf.features.core:4.0.2]
at org.apache.karaf.features.internal.service.FeaturesServiceImpl.addRepository(FeaturesServiceImpl.java:411)[8:org.apache.karaf.features.core:4.0.2]
at org.apache.karaf.features.command.RepoAddCommand.doExecute(RepoAddCommand.java:50)[32:org.apache.karaf.features.command:4.0.2]
at org.apache.karaf.features.command.FeaturesCommandSupport.execute(FeaturesCommandSupport.java:37)[32:org.apache.karaf.features.command:4.0.2]
at org.apache.karaf.shell.impl.action.command.ActionCommand.execute(ActionCommand.java:83)[45:org.apache.karaf.shell.core:4.0.2]
at org.apache.karaf.shell.impl.console.osgi.secured.SecuredCommand.execute(SecuredCommand.java:67)[45:org.apache.karaf.shell.core:4.0.2]
at org.apache.karaf.shell.impl.console.osgi.secured.SecuredCommand.execute(SecuredCommand.java:87)[45:org.apache.karaf.shell.core:4.0.2]
at org.apache.felix.gogo.runtime.Closure.executeCmd(Closure.java:480)[45:org.apache.karaf.shell.core:4.0.2]
at org.apache.felix.gogo.runtime.Closure.executeStatement(Closure.java:406)[45:org.apache.karaf.shell.core:4.0.2]
at org.apache.felix.gogo.runtime.Pipe.run(Pipe.java:108)[45:org.apache.karaf.shell.core:4.0.2]
at org.apache.felix.gogo.runtime.Closure.execute(Closure.java:182)[45:org.apache.karaf.shell.core:4.0.2]
at org.apache.felix.gogo.runtime.Closure.execute(Closure.java:119)[45:org.apache.karaf.shell.core:4.0.2]
at org.apache.felix.gogo.runtime.CommandSessionImpl.execute(CommandSessionImpl.java:94)[45:org.apache.karaf.shell.core:4.0.2]
at org.apache.karaf.shell.impl.console.ConsoleSessionImpl.run(ConsoleSessionImpl.java:268)[45:org.apache.karaf.shell.core:4.0.2]
at java.lang.Thread.run(Thread.java:745)[:1.8.0_71]
Caused by: shaded.org.ops4j.lang.NullArgumentException: Repository spec is empty string.
at shaded.org.ops4j.lang.NullArgumentException.validateNotEmpty(NullArgumentException.java:109)
at org.ops4j.pax.url.mvn.internal.config.MavenRepositoryURL.<init>(MavenRepositoryURL.java:94)[7:org.ops4j.pax.url.mvn:2.4.3]
at org.ops4j.pax.url.mvn.internal.config.MavenConfigurationImpl.getRepositories(MavenConfigurationImpl.java:315)[7:org.ops4j.pax.url.mvn:2.4.3]
at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.selectRepositories(AetherBasedResolver.java:349)[7:org.ops4j.pax.url.mvn:2.4.3]
at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.resolve(AetherBasedResolver.java:523)[7:org.ops4j.pax.url.mvn:2.4.3]
at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.resolve(AetherBasedResolver.java:506)[7:org.ops4j.pax.url.mvn:2.4.3]
at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.resolve(AetherBasedResolver.java:481)[7:org.ops4j.pax.url.mvn:2.4.3]
at org.ops4j.pax.url.mvn.internal.Connection.getInputStream(Connection.java:123)[7:org.ops4j.pax.url.mvn:2.4.3]
at java.net.URL.openStream(URL.java:1045)[:1.8.0_71]
at org.apache.karaf.features.internal.service.RepositoryImpl.load(RepositoryImpl.java:80)[8:org.apache.karaf.features.core:4.0.2]
... 15 more
我已经尝试了所有可能的组合，但我总是收到错误存储库规范为空。这里可能有什么问题？提前致谢。
最佳答案
好吧，这是一个奇怪的问题，但一篇旧帖子给了我一个提示。基本上，其中一个 mvn url 末尾有一个空格字符，这可能会扰乱 url 的解析。删除 url 解决了该问题。
http://osdir.com/ml/users-felix-apache/2009-11/msg00096.html
关于osgi - 在 Karaf 中添加新的 mvn url 失败， repo 规范为空，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/39687016/