[CAMEL-2027] NullPointerException when defining Camel route using Spring JavaConfig

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.0
• Fix Version/s: 2.1.0
• Component/s: camel-spring
• Assignee: Claus Ibsen
• Reporter: Dragisa Krsmanovic
• Created: 18/Sep/09 22:50
• Updated: 03/Jun/10 07:24
• Resolved: 20/Sep/09 08:12

Description

Following unit test fails.

Similar test, but using Spring XML with <routeBuilder ref="..."/> instead of Spring JavaConfig, would succeed.

@ContextConfiguration(
    locations = "org.plos.camel.BeanJavaConfigTest$ContextConfig",
    loader = JavaConfigContextLoader.class
)
public class BeanJavaConfigTest extends AbstractTestNGSpringContextTests {

  @EndpointInject(uri = "mock:end")
  protected MockEndpoint endpoint;

  @EndpointInject(uri = "mock:error")
  protected MockEndpoint errorEndpoint;

  @Produce(uri = "direct:start")
  protected ProducerTemplate producer;

  @Test
  @DirtiesContext
  public void testSomething() throws Exception {
    endpoint.expectedMessageCount(1);
    endpoint.message(0).body().isEqualTo("Message Body");
    producer.sendBody("Message Body");
    endpoint.assertIsSatisfied();
  }

  public static class SomeBean {

    @Handler
    public String someMethod(String body) {
      System.out.println("Received: " + body);
      return body;
    }
  }

  @Configuration
  public static class ContextConfig extends SingleRouteCamelConfiguration {

    @Bean
    @Override
    public RouteBuilder route() {
      return new RouteBuilder() {
        @Override
        public void configure() throws Exception {
          from("direct:start")
              .bean(new SomeBean())
              .to("mock:end")
              .errorHandler(deadLetterChannel("mock:end"));
        }
      };
    }
  }
}

Error stack:

java.lang.IllegalStateException: Failed to load ApplicationContext

...

Caused by: java.lang.NullPointerException
	at org.apache.camel.spring.spi.ApplicationContextRegistry.lookup(ApplicationContextRegistry.java:41)
	at org.apache.camel.component.bean.BeanInfo.createParameterMappingStrategy(BeanInfo.java:115)
	at org.apache.camel.component.bean.BeanProcessor.<init>(BeanProcessor.java:55)
	at org.apache.camel.model.BeanDefinition.createProcessor(BeanDefinition.java:156)
	at org.apache.camel.model.ProcessorDefinition.makeProcessor(ProcessorDefinition.java:276)
	at org.apache.camel.model.ProcessorDefinition.addRoutes(ProcessorDefinition.java:116)
	at org.apache.camel.model.RouteDefinition.addRoutes(RouteDefinition.java:439)
	at org.apache.camel.model.RouteDefinition.addRoutes(RouteDefinition.java:126)
	at org.apache.camel.impl.DefaultCamelContext.startRoute(DefaultCamelContext.java:569)
	at org.apache.camel.impl.DefaultCamelContext.startRouteDefinitions(DefaultCamelContext.java:924)
	at org.apache.camel.impl.DefaultCamelContext.doStart(DefaultCamelContext.java:901)
	at org.apache.camel.spring.SpringCamelContext.maybeDoStart(SpringCamelContext.java:165)
	at org.apache.camel.spring.SpringCamelContext.doStart(SpringCamelContext.java:160)
	at org.apache.camel.impl.ServiceSupport.start(ServiceSupport.java:52)
	at org.apache.camel.impl.DefaultCamelContext.start(DefaultCamelContext.java:816)
	at org.apache.camel.spring.SpringCamelContext.maybeStart(SpringCamelContext.java:99)
	at org.apache.camel.spring.SpringCamelContext.afterPropertiesSet(SpringCamelContext.java:87)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1369)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1335)
	... 74 more