[Camel]Using spring.xml to Walk through an Example

最新推荐文章于 2020-07-19 16:37:41 发布

最新推荐文章于 2020-07-19 16:37:41 发布 · 152 阅读

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#Spring #XML #ActiveMQ #JMS #Apache

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本文介绍了一个使用Apache Camel的示例，展示了如何通过spring.xml配置文件定义路由，从JMS队列接收消息并写入文件系统的过程。此外还提供了Java代码用于启动Camel上下文并发送测试消息。

Walk through an Example:

http://cwiki.apache.org/confluence/display/CAMEL/Walk+through+an+Example

springExampleUsingNamespaces.xml

使用spring.xml配置路由：

<?xml version="1.0" encoding="UTF-8"?>


<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://activemq.apache.org/camel/schema/spring http://activemq.apache.org/camel/schema/spring/camel-spring.xsd
">


<!-- START SNIPPET: example -->
<camelContext id="camel" xmlns="http://activemq.apache.org/camel/schema/spring">
<route>
<from uri="test-jms:queue:test.queue"/>
<process ref="logger"/>
<to uri="file:target/data"/>
<process ref="logger"/>
</route>
</camelContext>

<bean id="logger" class="org.apache.camel.processor.Logger"/>

<bean id="test-jms" class="org.apache.camel.component.jms.JmsComponent">
<property name="connectionFactory">
<bean class="org.apache.activemq.ActiveMQConnectionFactory">
<property name="brokerURL" value="vm://localhost?broker.persistent=false"/>
</bean>
</property>
</bean>

<!-- END SNIPPET: example -->

</beans>

Main.java

1.创建一个CamelContext;
2. 在CamelContext中发送对象（本例为文字），发送到的Component为test-jms:queue:test.queue.

public class Main {

public static void main(String args[]) throws Exception {

ClassPathXmlApplicationContext applicationContext = new ClassPathXmlApplicationContext(
"org/apache/camel/example/spring/springExampleUsingNamespaces.xml");

SpringCamelContext camelContext = (SpringCamelContext) applicationContext
.getBean("camel");

CamelTemplate template = new CamelTemplate(camelContext);
camelContext.start();

template.sendBody("test-jms:queue:test.queue", "Test Message" );

Thread.sleep(1000);
camelContext.stop();
}
}