Question

我正在将osgi捆绑软件部署到karaf的多模块maven项目中工作。由于以下错误，我们在测试和生产环境中观察到间歇性的捆绑包启动问题，该问题随后在重新启动karaf容器后得以解决：

Caused by: org.osgi.framework.BundleException: Uses constraint violation. Unable to resolve resource myBundle [myBundle [16](R 16.0)] because it is exposed to package 'javax.el' from resources javax.el-api [javax.el-api [236](R 236.0)] and com.sun.el.javax.el [com.sun.el.javax.el [212](R 212.0)] via two dependency chains.

Chain 1:
  myBundle [myBundle [16](R 16.0)]
    import: (&(osgi.wiring.package=javax.el)(version>=3.0.0)(!(version>=4.0.0)))
     |
    export: osgi.wiring.package: javax.el
  javax.el-api [javax.el-api [236](R 236.0)]

Chain 2:
  myBundle [myBundle [16](R 16.0)]
    import: (&(osgi.wiring.package=com.sun.el)(version>=3.0.0)(!(version>=4.0.0)))
     |
    export: osgi.wiring.package: com.sun.el; uses:=javax.el
    export: osgi.wiring.package=javax.el
  com.sun.el.javax.el [com.sun.el.javax.el [212](R 212.0)] Unresolved requirements: [[myBundle [16](R 16.0)] osgi.wiring.package; (&(osgi.wiring.package=com.sun.el)(version>=3.0.0)(!(version>=4.0.0)))]
        at org.apache.felix.framework.Felix.resolveBundleRevision(Felix.java:4111)[org.apache.felix.framework-5.4.0.jar:]
        at org.apache.felix.framework.Felix.startBundle(Felix.java:2117)[org.apache.felix.framework-5.4.0.jar:]
        at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:998)[org.apache.felix.framework-5.4.0.jar:]
        at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:984)[org.apache.felix.framework-5.4.0.jar:]
        at org.apache.karaf.features.internal.service.FeaturesServiceImpl.startBundle(FeaturesServiceImpl.java:1286)[10:org.apache.karaf.features.core:4.0.7]
        at org.apache.karaf.features.internal.service.Deployer.deploy(Deployer.java:846)[10:org.apache.karaf.features.core:4.0.7]
        ... 6 more

我经历了这两个相关的SO帖子（Error starting bundle in karaf: "via two dependency chains"和Why are uses constraints violated when both chains end in the same bundle?），但是在我的情况下，我实际上无法确定将javax.el-api依赖项引入myBundle的位置。我们的项目使用的是Hibernate Validator，它需要使用glassfish jar中的EL软件包，因此这里引入了com.sun.el.javax.el软件包依赖项。我无法确定从何处引入javax.el-api依赖关系。我尝试使用下面的maven命令检查依赖关系树，但无济于事。

mvn compile dependency:tree
mvn compile dependency:tree -D:verbose
mvn compile dependency:tree -D:verbose -Dincludes=javax.el

这是为休眠验证器添加的依赖项：

<dependency>
    <groupId>org.glassfish</groupId>
    <artifactId>javax.el</artifactId>
    <version>3.0.1-b08</version>
</dependency>

正在使用的karaf版本是4.0.7

任何帮助将不胜感激。

由于“捆绑包例外：使用约束违规”，导致karaf中的捆绑包失败。

0 个答案: