Problem Definition
I have a Spring MVC project which is Gradle-based. I have a website project (zeario-web), web crawler (zeario-webcrawler), and shared classes (zeario-sharedclientserverclasses). The web and web crawler share some classes (something like DTOs or VOs).
In my web app, I have a CrawlerController with a getWorkUnit method; this calls a method on a CrawlerService instance (@Autowired depdency), which, in turn, uses some classes from the shared library.
My problem is that I can build and deploy a working version of my web app via Gradle, but not via Eclipse. Eclipse gives me a spring runtime exception about not finding one of the shared classes, and being therefore unable to create/inject the service instance.
From the Tomcat logs:
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'crawlerController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.zeario.service.CrawlerService com.zeario.api.v1.controller.CrawlerController.service; nested exception is java.lang.NoClassDefFoundError: com/zeario/api/v1/model/workunit/PageDiscoveryWorkUnit
Code Snippets
Controller definition (simplified):
@Controller
public class CrawlerController {
@Autowired
private CrawlerService service;
// ... methods with @RequestMapping ...
}
Service class (simplified):
@Service
public class CrawlerService {
public PageDiscoveryWorkUnit getPageDiscoveryWorkUnit() {
return new PageDiscoveryWorkUnit();
}
PageDiscoveryWorkUnit is a simple POJO/Bean class. I have my service beans declared in the spring-servlet.xml file:
<bean id="crawlerService" class="com.zeario.service.CrawlerService" />
Gradle Configuration
1) Root project (empty, no source) defines sub-projects in settings.gradle. Dependencies are in build.gradle:
project(':zeario-web') {
dependencies {
compile project(':zeario-sharedclientserver')
}
}
project(':zeario-webcrawler') {
dependencies {
compile project(':zeario-sharedclientserver')
}
}
2) Projects define dependencies on other projects where applicable. For example, the web project build file contains:
dependencies {
// Guava, Spring MVC, etc. ...
packed project(':zeario-sharedclientserver') // Shared code
// ...
}
Eclipse Configuration
When I check build paths, Eclipse correctly shows project dependencies; for example, it shows that the web project has a dependency on the shared client/server project.
