Question

我是骆驼和蓝图的新手。

我正在尝试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 Context file ==＆gt;

<?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>

的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Stacktrace ==＆gt;

org.osgi.service.blueprint.container.ComponentDefinitionException：无法实例化组件 org.apache.aries.blueprint.container.BlueprintContainerImpl.instantiateEagerComponents（BlueprintContainerImpl.java:671）在 org.apache.aries.blueprint.container.BlueprintContainerImpl.doRun（BlueprintContainerImpl.java:370）在 org.apache.aries.blueprint.container.BlueprintContainerImpl.run（BlueprintContainerImpl.java:261）在 java.util.concurrent.Executors $ RunnableAdapter.call（Executors.java:471）在java.util.concurrent.FutureTask.run（FutureTask.java:262）at org.apache.aries.blueprint.container.ExecutorServiceWrapper.run（ExecutorServiceWrapper.java:106）在 org.apache.aries.blueprint.utils.threading.impl.DiscardableRunnable.run（DiscardableRunnable.java:48）在 java.util.concurrent.Executors $ RunnableAdapter.call（Executors.java:471）在java.util.concurrent.FutureTask.run（FutureTask.java:262）at java.util.concurrent.ScheduledThreadPoolExecutor中的$ ScheduledFutureTask.access $ 201（ScheduledThreadPoolExecutor.java:178）在 java.util.concurrent.ScheduledThreadPoolExecutor中的$ ScheduledFutureTask.run（ScheduledThreadPoolExecutor.java:292）在 java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1145）在 java.util.concurrent.ThreadPoolExecutor中的$ Worker.run（ThreadPoolExecutor.java:615）在java.lang.Thread.run（Thread.java:745）引起： java.lang.NoClassDefFoundError：org / apache / camel / spi / EndpointCompleter at java.lang.ClassLoader.defineClass1（Native Method）at java.lang.ClassLoader.defineClass（ClassLoader.java:800）at java.security.SecureClassLoader.defineClass（SecureClassLoader.java:142）在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 java.lang.ClassLoader.loadClass（ClassLoader.java:425）at sun.misc.Launcher $ AppClassLoader.loadClass（Launcher.java:308）at at java.lang.ClassLoader.loadClass（ClassLoader.java:358）at de.kalpatec.pojosr.framework.PojoSRBundle.loadClass（PojoSRBundle.java:431）在 org.apache.aries.blueprint.container.BlueprintContainerImpl.loadClass（BlueprintContainerImpl.java:419）在 org.apache.aries.blueprint.container.BlueprintRepository.loadClass（BlueprintRepository.java:410）在 org.apache.aries.blueprint.container.GenericType.parse（GenericType.java:113）在 org.apache.aries.blueprint.di.AbstractRecipe.doLoadType（AbstractRecipe.java:168）在 org.apache.aries.blueprint.di.AbstractRecipe.loadType（AbstractRecipe.java:161）在 org.apache.aries.blueprint.container.BeanRecipe.loadClass（BeanRecipe.java:249）在 org.apache.aries.blueprint.container.BeanRecipe.getType（BeanRecipe.java:895）在 org.apache.aries.blueprint.container.BeanRecipe.getInstance（BeanRecipe.java:323）在 org.apache.aries.blueprint.container.BeanRecipe.internalCreate2（BeanRecipe.java:806）在 org.apache.aries.blueprint.container.BeanRecipe.internalCreate（BeanRecipe.java:787）在 org.apache.aries.blueprint.di.AbstractRecipe $ 1.call（AbstractRecipe.java:79）在java.util.concurrent.FutureTask.run（FutureTask.java:262）at org.apache.aries.blueprint.di.AbstractRecipe.create（AbstractRecipe.java:88）在 org.apache.aries.blueprint.container.BlueprintRepository.createInstances（BlueprintRepository.java:245）在 org.apache.aries.blueprint.container.BlueprintRepository.createAll（BlueprintRepository.java:183）在 org.apache.aries.blueprint.container.BlueprintContainerImpl.instantiateEagerComponents（BlueprintContainerImpl.java:667） ... 13更多引起：java.lang.ClassNotFoundException： org.apache.camel.spi.EndpointCompleter at java.net.URLClassLoader $ 1.run（URLClassLoader.java:366）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 java.lang.ClassLoader.loadClass（ClassLoader.java:425）at sun.misc.Launcher $ AppClassLoader.loadClass（Launcher.java:308）at at java.lang.ClassLoader.loadClass（ClassLoader.java:358）... 42更多

Answer 1

问题在于驼峰版本。我在我的pom.xml中更改了驼峰版本并且工作正常

<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

你的OSGI环境中是否安装了camel-core？如果您在karaf（2.x.x），请键入

功能：列表| grep camel

如果没有显示，您可以执行以下操作：

特色：选择骆驼

添加存储库，然后：

功能：安装camel-core

我强烈建议您阅读＆＃34; OSGi in Action＆＃34;。 ClassNotFoundException通常表示您的上下文没有对另一个包将导出的类具有可见性。自＆＃34; org / apache / camel / spi / EndpointCompleter＆＃34;是camel-core，你必须在你的osgi环境中安装它。

检查包是否已导出：

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，您的捆绑包也必须导入此包。你可以做：

imports <bundleidOfYourImportingBundle>

并检查包裹是否在那里。

如果没有，您必须检查是否正确构建了捆绑包。正确的bundle应该在MANIFEST.MF中声明一些OSGi头。 You can have an example here

要使用maven生成它，您应该考虑使用依赖于bnd的maven bundle plugin。

以下是使用它的示例：

<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，我建议您OSGi in action并至少阅读三个层（模块化，生命周期和服务）章节，以了解该发现的工作原理。它最后解释了什么是bnd以及如何使用它。

Answer 3

stacktrace暗示您似乎在模拟的OSGi环境中运行您的驼峰上下文。

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

尝试在像karaf这样的真实OSGi环境中运行它。

Camel ActiveMq蓝图

3 个答案: