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La superclasse n'a pas de constructeur nul mais aucun argument n'a été donné

J'utilise Spring Social dans mon application:

<spring.framework.version>3.2.0.RELEASE</spring.framework.version>
<hibernate.version>4.1.9.Final</hibernate.version>
<commons-dbcp.version>1.4</commons-dbcp.version>
<org.springframework.social-version>1.1.0.BUILD-SNAPSHOT</org.springframework.social-version>
<org.springframework.social.facebook-version>1.1.0.BUILD-SNAPSHOT</org.springframework.social.facebook-version>
<org.springframework-version>3.2.1.RELEASE</org.springframework-version>
<org.springframework.security.crypto-version>3.1.3.RELEASE</org.springframework.security.crypto-version>

Quand je postule

private final Facebook facebook;

@Inject
public SearchController(Facebook facebook) {
    this.facebook = facebook;
}

À mon HomeController:

@Controller
public class HomeController {


    private final Facebook facebook;

    @Inject
    public HomeController(Facebook facebook) {
        this.facebook = facebook;
    }

    private static final Logger logger = LoggerFactory.getLogger(HomeController.class);

    /**
     * Simply selects the home view to render by returning its name.
     */
    @RequestMapping(value = "/", method = RequestMethod.GET)
    public String home(Model model) {
        return "home";
    }

}

L'injection fonctionne comme prévu et je peux obtenir des informations de facebook. Cependant, lorsque je l'applique à l'un de mes autres Cotrollers comme celui-ci

@Controller
@Transactional
@RequestMapping(value = "/search")
public class SearchController {

    private static final Logger logger = LoggerFactory.getLogger(SearchController.class);

    private final Facebook facebook;

    @Inject
    public SearchController(Facebook facebook) {
        this.facebook = facebook;
    }

    @PersistenceContext
    private EntityManager entityManager;

    ...

Je reçois cette erreur:

mar 05, 2013 12:46:36 EM org.Apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [appServlet] in context with path [/project] threw exception [Request processing failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'searchController' defined in file [C:\Users\Nilsi\Downloads\springsource\vfabric-tc-server-developer-2.7.2.RELEASE\base-instance\wtpwebapps\course_info\WEB-INF\classes\com\courseinfo\project\controller\SearchController.class]: Initialization of bean failed; nested exception is org.springframework.aop.framework.AopConfigException: Could not generate CGLIB subclass of class [class com.courseinfo.project.controller.SearchController]: Common causes of this problem include using a final class or a non-visible class; nested exception is Java.lang.IllegalArgumentException: Superclass has no null constructors but no arguments were given] with root cause
Java.lang.IllegalArgumentException: Superclass has no null constructors but no arguments were given
    at org.springframework.cglib.proxy.Enhancer.emitConstructors(Enhancer.Java:721)
    at org.springframework.cglib.proxy.Enhancer.generateClass(Enhancer.Java:499)
    at org.springframework.cglib.transform.TransformingClassGenerator.generateClass(TransformingClassGenerator.Java:33)
    at org.springframework.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.Java:25)
    at org.springframework.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.Java:216)
    at org.springframework.cglib.proxy.Enhancer.createHelper(Enhancer.Java:377)
    at org.springframework.cglib.proxy.Enhancer.create(Enhancer.Java:285)
    at org.springframework.aop.framework.CglibAopProxy.getProxy(CglibAopProxy.Java:205)
    at org.springframework.aop.framework.ProxyFactory.getProxy(ProxyFactory.Java:111)
    at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.createProxy(AbstractAutoProxyCreator.Java:477)
    at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.wrapIfNecessary(AbstractAutoProxyCreator.Java:362)
    at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessAfterInitialization(AbstractAutoProxyCreator.Java:322)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.Java:412)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.Java:1492)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.Java:524)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.Java:461)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.Java:295)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.Java:223)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.Java:292)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.Java:194)
    at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.Java:1117)
    at org.springframework.web.method.HandlerMethod.createWithResolvedBean(HandlerMethod.Java:202)
    at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.getHandlerInternal(AbstractHandlerMethodMapping.Java:233)
    at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.getHandlerInternal(AbstractHandlerMethodMapping.Java:55)
    at org.springframework.web.servlet.handler.AbstractHandlerMapping.getHandler(AbstractHandlerMapping.Java:297)
    at org.springframework.web.servlet.DispatcherServlet.getHandler(DispatcherServlet.Java:1091)
    at org.springframework.web.servlet.DispatcherServlet.getHandler(DispatcherServlet.Java:1076)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.Java:896)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.Java:856)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.Java:920)
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.Java:827)
    at javax.servlet.http.HttpServlet.service(HttpServlet.Java:641)
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.Java:801)
    at javax.servlet.http.HttpServlet.service(HttpServlet.Java:722)
    at org.Apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.Java:305)
    at org.Apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.Java:210)
    at org.Apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.Java:222)
    at org.Apache.catalina.core.StandardContextValve.invoke(StandardContextValve.Java:123)
    at org.Apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.Java:472)
    at org.Apache.catalina.core.StandardHostValve.invoke(StandardHostValve.Java:168)
    at org.Apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.Java:99)
    at org.Apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.Java:929)
    at org.Apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.Java:118)
    at org.Apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.Java:407)
    at org.Apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.Java:1002)
    at org.Apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.Java:585)
    at org.Apache.Tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.Java:312)
    at Java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.Java:1110)
    at Java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.Java:603)
    at Java.lang.Thread.run(Thread.Java:722)

Ma conjecture est que je ne peux pas injecter facebook à un contrôleur avec l'annotation @Transactional? J'ai cherché sur Google, mais je ne trouve aucune solution à cela.

facebookspringhibernateinjectspring-social
30
nilsi

CGlib a une restriction importante: la classe cible doit fournir un constructeur par défaut.

Si vous utilisez l'injection basée sur les propriétés au lieu de l'injection basée sur le constructeur, le problème disparaîtra.

58
Maksym Demidas

Je viens de créer un constructeur par défaut vide pour gérer cela.

1
Smart Coder