NoSuchMethodError in Jetty with Spring Data Mongo custom repository - spring

Question

I have a small web application in development using Maven, Spring MVC and Spring Data Mongo. I am getting a java.lang.NoSuchMethodError when one of my Controllers attempts to access a method defined in a custom repository. The same method works fine when exercised via a JUnit 4 test extending AbstractJUnit4SpringContextTests and using a near-identical XML configuration file.
Standard repository:
public interface IndividualRepository extends MongoRepository<Individual, String>, IndividualRepositoryCustom {
...
}
Custom interface:
public interface IndividualRepositoryCustom {
Individual findByIdentifier(String identifierType, String identifierValue);
}
Custom implementation:
public class IndividualRepositoryImpl implements IndividualRepositoryCustom {
#Autowired
private MongoTemplate mongoTemplate;
#Override
public Individual findByIdentifier(String identifierType, String identifierValue) {
String locator = String.format("identifiers.%s", identifierType);
return mongoTemplate.findOne(query(where(locator).is(identifierValue)), Individual.class);
}
}
dataaccess-config.xml:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:mongo="http://www.springframework.org/schema/data/mongo"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/data/mongo
http://www.springframework.org/schema/data/mongo/spring-mongo-1.0.xsd">
<mongo:repositories base-package="com.myco.dataaccess"/>
<mongo:mongo host="mongo.myco.com" port="27017"/>
<mongo:db-factory dbname="test" mongo-ref="mongo"/>
<bean id="mongoTemplate" class="org.springframework.data.mongodb.core.MongoTemplate">
<constructor-arg ref="mongo"/>
<constructor-arg value="test"/>
</bean>
</beans>
In my JUnit test I have (excerpt):
#Autowired
private IndividualRepository individualRepo;
...
List<Individual> foundList = individualRepo.findAll();
assertNotNull(foundList);
assertTrue(foundList.size() > 0);
Individual found = individualRepo.findByIdentifier("someid", "123456");
assertNotNull(found);
assertEquals("Bob", found.getFirstName());
The test passes fine, calling both findAll() (standard Repository method) and findByIdentifier() (custom method). The latter fails with NoSuchMethodError when called by a Controller running in a web application in Jetty, while the same Controller can call findAll() with no issues.

Answer 1

This turned out to be nothing to do with Spring Data, but an issue with the way I was using the maven-jetty-plugin with my multi-module build.
Basically, I was running mvn jetty:run for my web module which had a dependency on my dataaccess module (where my JUnit tests lived). As I was rebuilding the project with mvn clean package, the latest versions were not being placed in my local repo, and therefore were not being picked up by the mvn jetty:run process running alongside my build process. Problem was solved by building with mvn clean install.
So, as usual, the error message was spot on - the method indeed did not exist in the version of the JAR that Jetty was being supplied.