我在servicemix 4.4.1上运行。我找不到camel-dns
模块。
我已经运行了features:list
和osgi:list
,但看不到camel-dns
。当我执行
<to uri="dns:lookup"/>
我得到了一个
org.apache.camel.ResolveEndpointFailedException: Failed to resolve endpoint:
dns://lookup due to: No component found with scheme: dns
有什么想法吗?
发布于 2012-03-19 17:47:49
好的,使用SMX开箱即用就有点棘手了,因为SMX不会公开DNS捆绑包所需的来自JVM的包。所以你会得到一个类似这样的错误:
ERROR: Error starting file:bundles/dnsjava_2.1.1.jar (org.osgi.framework.BundleException: Unresolved constraint in bundle dnsjava [69]: Unable to resolve 69.0: missing requirement [69.0] package; (package=sun.net.spi.nameservice))
org.osgi.framework.BundleException: Unresolved constraint in bundle dnsjava [69]: Unable to resolve 69.0: missing requirement [69.0] package; (package=sun.net.spi.nameservice)
at org.apache.felix.framework.Felix.resolveBundle(Felix.java:3404)
at org.apache.felix.framework.Felix.startBundle(Felix.java:1714)
at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1143)
at org.apache.felix.framework.StartLevelImpl.run(StartLevelImpl.java:264)
at java.lang.Thread.run(Thread.java:680)
因此,您需要在etc/jre.properties中调整SMX的配置
添加以下内容
sun.net.spi.nameservice
添加到导出的Java平台包中,例如,我的文件现在以
org.xml.sax, \
org.xml.sax.ext, \
org.xml.sax.helpers, \
sun.net.spi.nameservice
您需要重新启动ESB才能使此更改生效。
要安装camel-dns,首先需要安装它所需的依赖项,这也是junit。这就是这个包:http://repo2.maven.org/maven2/org/apache/servicemix/bundles/org.apache.servicemix.bundles.junit/4.10_1/
在一个基本的Apache Karaf 2.2.5上,我设法安装了它
karaf@root> osgi:list
START LEVEL 100 , List Threshold: 50
ID State Blueprint Spring Level Name
[ 49] [Active ] [ ] [ ] [ 60] Apache ServiceMix :: Bundles :: junit (4.10.0.1)
[ 50] [Active ] [ ] [ ] [ 60] dnsjava (2.1.1)
[ 65] [Active ] [ ] [ ] [ 50] camel-core (2.10.0.SNAPSHOT)
[ 66] [Active ] [Created ] [ ] [ 50] camel-karaf-commands (2.10.0.SNAPSHOT)
[ 73] [Active ] [ ] [ ] [ 50] geronimo-jta_1.1_spec (1.1.1)
[ 74] [Active ] [ ] [ ] [ 50] camel-spring (2.10.0.SNAPSHOT)
[ 75] [Active ] [ ] [ ] [ 60] camel-dns (2.10.0.SNAPSHOT)
[ 76] [Active ] [ ] [Started] [ 60] IPCheck.xml (0.0.0)
我将IPCheck.xml驼峰示例路由从这里:https://svn.apache.org/repos/asf/camel/trunk/components/camel-dns/src/test/resources/复制到部署目录,并让驼峰应用程序启动:
karaf@root> camel:context-list
Name Status Uptime
[camel ] [Started ] [22.339 seconds ]
karaf@root> camel:context-info camel
Camel Context camel
Name: camel
Version: 2.10-SNAPSHOT
Status: Started
Uptime: 25.835 seconds
Advanced
Auto Startup: true
Starting Routes: false
Suspended: false
Tracing: true
Properties
Components
direct
mock
dns
spring-event
Endpoints
direct://start
dns://ip
mock://result
spring-event://default
Routes
IPCheck
发布于 2012-03-19 17:07:17
并不是所有的第三方库都符合OSGi,因此我们不能包含此类组件的功能。但是,您可以尝试自己将JAR安装为打包的包。我认为DNS的一个问题是它依赖于SUN JDK或类似的东西。
请参阅包装部署程序:http://karaf.apache.org/manual/2.2.5/users-guide/deployer.html
查看camel-dns组件的pom.xml文件,了解它在运行时需要哪些依赖项:https://svn.apache.org/repos/asf/camel/trunk/components/camel-dns/pom.xml
然而,最近发布的dnsjava现在似乎是OSGi包。因此,我们可能会为它添加一个功能,所以请期待下一个Camel版本。
您可以使用以下命令在SMX中手动安装它
osgi:install mvn:dnsjava/dnsjava/2.1.1
然后是camel-dns包
osgi:install mvn:org.apache.camel/camel-dns/2.9.0
注意使用正确的Camel版本,我输入了2.9.0。但是SMX 4.4.1可能使用2.9.1,我记不起来了。
https://stackoverflow.com/questions/9759648
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