骆驼ActiveMq蓝图

Question

我对骆驼和蓝图很陌生。

我正试图制作一个简单的程序，将数据放入队列中。不知道这里出了什么问题。

Camel上下文文件==>

<?xml version="1.0" encoding="UTF-8"?>
<blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:camel="http://camel.apache.org/schema/blueprint"
    xsi:schemaLocation="
       http://www.osgi.org/xmlns/blueprint/v1.0.0 http://www.osgi.org/xmlns/blueprint/v1.0.0/blueprint.xsd
       http://camel.apache.org/schema/blueprint http://camel.apache.org/schema/blueprint/camel-blueprint.xsd">

    <bean id="helloBean" class="com.camelSampleBundle.HelloBean">
        <property name="say" value="Hi from Camel" />
    </bean>
    <bean id="activemq" class="org.apache.activemq.camel.component.ActiveMQComponent">
        <property name="brokerURL" value="tcp://localhost:61616" />
    </bean>
    <camelContext id="blueprintContext" trace="false"
        xmlns="http://camel.apache.org/schema/blueprint">
        <route id="timerToLog">
            <from uri="timer:foo?period=5000" />
            <setBody>
                <constant>Hello World!</constant>
            </setBody>
            <to uri="activemq:camel.q.timer" />
            <log message="The message contains ${body}" />

        </route>
        <!-- <route id="anotherRoute">
            <from uri="activemq:camel.q.timer" />
            <log message="The message contains ${body}" />
            <to uri="mock:result" />
        </route> -->
    </camelContext>

</blueprint>

POM.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">

    <modelVersion>4.0.0</modelVersion>

    <groupId>com.camelSampleBundle</groupId>
    <artifactId>camel-sampleBundle</artifactId>
    <packaging>bundle</packaging>
    <version>1.0.0-SNAPSHOT</version>

    <name>Sample Bundle</name>
    <url>http://www.myorganization.org</url>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <fuse.version>2.12.0.redhat-610379</fuse.version>
    </properties>

    <repositories>
        <repository>
            <id>release.fusesource.org</id>
            <name>FuseSource Release Repository</name>
            <url>http://repo.fusesource.com/nexus/content/repositories/releases</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
            <releases>
                <enabled>true</enabled>
            </releases>
        </repository>
        <repository>
            <id>snapshot.fusesource.org</id>
            <name>FuseSource Snapshot Repository</name>
            <url>http://repo.fusesource.com/nexus/content/repositories/snapshots</url>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
            <releases>
                <enabled>false</enabled>
            </releases>
        </repository>
    </repositories>

    <pluginRepositories>
        <pluginRepository>
            <id>release.fusesource.org</id>
            <name>FuseSource Release Repository</name>
            <url>http://repo.fusesource.com/nexus/content/repositories/releases</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
            <releases>
                <enabled>true</enabled>
            </releases>
        </pluginRepository>
        <pluginRepository>
            <id>snapshot.fusesource.org</id>
            <name>FuseSource Snapshot Repository</name>
            <url>http://repo.fusesource.com/nexus/content/repositories/snapshots</url>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
            <releases>
                <enabled>false</enabled>
            </releases>
        </pluginRepository>
    </pluginRepositories>

    <dependencies>
        <dependency>
            <groupId>org.apache.camel</groupId>
            <artifactId>camel-core</artifactId>
            <version>2.10.0.redhat-60024</version>
        </dependency>
        <dependency>
            <groupId>org.apache.camel</groupId>
            <artifactId>camel-blueprint</artifactId>
            <version>2.10.0.redhat-60024</version>
        </dependency>
        <dependency>
            <groupId>org.apache.camel</groupId>
            <artifactId>camel-jms</artifactId>
            <version>2.10.0.redhat-60024</version>
        </dependency>
        <dependency>
            <groupId>org.apache.activemq</groupId>
            <artifactId>activemq-camel</artifactId>
            <version>5.13.2</version>
        </dependency>



        <!-- logging -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>1.6.6</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>1.6.6</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>jcl-over-slf4j</artifactId>
            <version>1.6.6</version>
        </dependency>
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>

        <!-- testing -->
        <dependency>
            <groupId>org.apache.camel</groupId>
            <artifactId>camel-test-blueprint</artifactId>
            <version>2.10.0.redhat-60024</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <defaultGoal>install</defaultGoal>

        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>2.5.1</version>
                <configuration>
                    <source>1.6</source>
                    <target>1.6</target>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-resources-plugin</artifactId>
                <version>2.4.3</version>
                <configuration>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>

            <!-- to generate the MANIFEST-FILE of the bundle -->
            <plugin>
                <groupId>org.apache.felix</groupId>
                <artifactId>maven-bundle-plugin</artifactId>
                <version>2.3.7</version>
                <extensions>true</extensions>
                <configuration>
                    <instructions>
                        <Bundle-SymbolicName>camel-sampleBundle</Bundle-SymbolicName>
                        <Import-Package>*</Import-Package>
                        <Export-Package />
                    </instructions>
                </configuration>
            </plugin>

            <!-- to run the example using mvn camel:run -->
            <plugin>
                <groupId>org.apache.camel</groupId>
                <artifactId>camel-maven-plugin</artifactId>
                <version>2.10.0.redhat-60024</version>
                <configuration>
                    <useBlueprint>true</useBlueprint>
                </configuration>
            </plugin>

        </plugins>
    </build>

</project>

错误堆栈跟踪==>

org.osgi.service.blueprint.container.ComponentDefinitionException:无法在org.apache.aries.blueprint.container.BlueprintContainerImpl.instantiateEagerComponents(BlueprintContainerImpl.java:671)、org.apache.aries.blueprint.container.BlueprintContainerImpl.doRun(BlueprintContainerImpl.java:370)、org.apache.aries.blueprint.container.BlueprintContainerImpl.run(BlueprintContainerImpl.java:261)、java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)和java.util.concurrent.FutureTask.run上实例化组件(org.apache.aries.blueprint.container.ExecutorServiceWrapper.run(ExecutorServiceWrapper.java:106) at org.apache.aries.blueprint.utils.threading.impl.DiscardableRunnable.run(DiscardableRunnable.java:48) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) at java.util.concurrent.FutureTask.run(FutureTask.java:262) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:178) atjava.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:292) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745)：java.lang.NoClassDefFoundError: org/apache/camel/spi/EndpointCompleter at java.lang.ClassLoader.defineClass1(原生方法) at java.lang.ClassLoader.defineClass(ClassLoader )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$1.run(URLClassLoader.java:355) at java.security.AccessController.doPrivileged(Native Method)在java.lang.ClassLoader.loadClass(ClassLoader.java:425)，sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)，java.lang.ClassLoader.loadClass(ClassLoader.java:358)，de.kalpatec.pojosr.framework.PojoSRBundle.loadClass(PojoSRBundle.java:431)，org.apache.aries.blueprint.container.BlueprintContainerImpl.loadClass(BlueprintContainerImpl.java:419)，org.apache.aries.blueprint.container。BlueprintRepository.loadClass(BlueprintRepository.java:410) at org.apache.aries.blueprint.container.GenericType.parse(GenericType.java:113) at org.apache.aries.blueprint.di.AbstractRecipe.doLoadType(AbstractRecipe.java:168) at org.apache.aries.blueprint.di.AbstractRecipe.loadType(AbstractRecipe.java:161) at org.apache.aries.blueprint.container.BeanRecipe.loadClass(BeanRecipe.java:249) at org.apache.aries.blueprint.container.org.apache.aries.blueprint.container.BeanRecipe.getInstance(BeanRecipe.java:323) at org.apache.aries.blueprint.container.BeanRecipe.internalCreate2(BeanRecipe.java:806) org.apache.aries.blueprint.container.BeanRecipe.internalCreate(BeanRecipe.java:787) at org.apache.aries.blueprint.di.AbstractRecipe$1.call(AbstractRecipe.java:79) at java.util.concurrent.FutureTask.run(FutureTask BeanRecipe.getType(BeanRecipe.java:895)在org.apache.aries.blueprint.di.AbstractRecipe.create(AbstractRecipe.java:88) at org.apache.aries.blueprint.container.BlueprintRepository.createInstances(BlueprintRepository.java:245) at org.apache.aries.blueprint.container.BlueprintRepository.createAll(BlueprintRepository.java:183) at org.apache.aries.blueprint.container.BlueprintContainerImpl.instantiateEagerComponents(BlueprintContainerImpl.java:667) . 13更多的原因是: java.lang.ClassNotFoundException: orgjava.net.URLClassLoader$1.run(URLClassLoader.java:366) at java.net.URLClassLoader$1.run(URLClassLoader.java:355) at java.security.AccessController.doPrivileged(Native Method) java.net.URLClassLoader.findClass(URLClassLoader.java:354) at java.lang.ClassLoader.loadClass(ClassLoader.java:425) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) at java.lang。ClassLoader.loadClass(ClassLoader.java:358) . 42

Answer 1

问题是骆驼的版本。我在我的pom.xml中更改了骆驼版本，它运行得很好

<dependency>
        <groupId>org.apache.camel</groupId>
        <artifactId>camel-core</artifactId>
        <version>2.12.0.redhat-610379</version>
    </dependency>
    <dependency>
        <groupId>org.apache.camel</groupId>
        <artifactId>camel-blueprint</artifactId>
        <version>2.12.0.redhat-610379</version>
    </dependency>
    <dependency>
        <groupId>org.apache.camel</groupId>
        <artifactId>camel-jms</artifactId>
        <version>2.12.0.redhat-610379</version>
    </dependency>

Answer 2

您的OSGI中安装了骆驼核心吗？如果您在空手道(2.x.x)，键入

特征:列表- grep骆驼

如果没有显示，您可以执行以下操作：

特征:选择骆驼

添加存储库，然后：

特点:安装骆驼芯

我强烈建议你阅读“行动中的OSGi”。ClassNotFoundException通常表示您的上下文在类上没有可见性，而另一个包将导出。因为"org/apache/camel/spi/EndpointCompleter“是camel-core，所以您必须在osgi环境中安装它。

若要检查是否导出包，请执行以下操作：

jschoreels@lab> exports | grep camel.spi
   100 org.apache.camel.spi; version="2.14.3"  
jschoreels@lab> list | grep 100
START LEVEL 100 , List Threshold: 50
[ 100] [Active     ] [            ] [       ] [   50] camel-core (2.14.3)

但是，您的包也必须导入这个包。你可以做一个：

imports <bundleidOfYourImportingBundle>

看看包裹是否在那里。

如果没有，则必须检查是否正确地构建了包。正确的包应该在MANIFEST.MF. 你可以在这里举个例子中声明一些你可以在这里举个例子头。

要用maven生成它，您应该考虑使用依赖于bnd的maven包插件。

下面是一个使用它的示例：

<build>
     <plugins>
            <plugin>
                <groupId>org.apache.felix</groupId>
                <artifactId>maven-bundle-plugin</artifactId>
                <version>${maven-bundle-pulgin.version}</version>
                <configuration>
                    <instructions>
                        <Import-Package>*</Import-Package>
                        <Export-Package />
                    </instructions>
                </configuration>
            </plugin>
    </plugins
</build>

如果您想学习OSGi，我确实推荐您行动中的OSGi，并至少阅读三个层(模块、生命周期和服务)章节来了解发现是如何工作的。最后说明了什么是bnd以及如何使用bnd。

Answer 3

堆栈跟踪提示您似乎在模拟的OSGi环境中运行camel上下文。

de.kalpatec.pojosr.framework.PojoSRBundle.loadClass(PojoSRBundle.java:431)

尝试在真正的OSGi环境中运行它，比如karaf。