Spring GWT Hibernate Validation Exception

ssefyou · 03/06/2012, 16h18

Bonjour Bonsoir ,
j'essaye de creer une application en utilisant les technologies suivantes (Gwt2 + Spring3 + hibernate3 + jpa2) j'ai suivi ce tutoriel http://www.javacodegeeks.com/2010/05...ernate-35.html mais je croi que j'ai fait une betise quelque part

la structure du projet :

le fichier web.xml :

Code :

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<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>WEB-INF/*Context.xml</param-value>
	</context-param>
 
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>
 
	<servlet>
		<servlet-name>springGwtRemoteServiceServlet</servlet-name>
		<servlet-class>org.spring4gwt.server.SpringGwtRemoteServiceServlet</servlet-class>
	</servlet>
 
	<servlet-mapping>
		<servlet-name>springGwtRemoteServiceServlet</servlet-name>
		<url-pattern>/gwtspringhiberjpa/springGwtServices/*</url-pattern>
	</servlet-mapping>
 
	<welcome-file-list>
		<welcome-file>GwtSpringHiberJpa.html</welcome-file>
	</welcome-file-list>

le fichier applicationContext.xml :

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<context:component-scan base-package="you.ssef" />
<tx:annotation-driven/>
 
<bean class="org.springframework.orm.jpa.LocalEntityManagerFactoryBean" id="entityManagerFactory">
        <property name="persistenceUnitName" value="MyPersistenceUnit"/>
    </bean>
 
    <bean class="org.springframework.orm.jpa.JpaTransactionManager" id="transactionManager">
        <property name="entityManagerFactory" ref="entityManagerFactory"/>
    </bean>

le fichier persistence.xml :

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<persistence-unit name="MyPersistenceUnit" transaction-type="RESOURCE_LOCAL">
    <provider>org.hibernate.ejb.HibernatePersistence</provider>
    <properties>
      <property name="hibernate.dialect" value="org.hibernate.dialect.MySQLInnoDBDialect"/>
      <property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver"/>
      <property name="hibernate.show_sql" value="true"/>
      <property name="hibernate.connection.username" value="root"/>
      <property name="hibernate.connection.password" value="root"/>
      <property name="hibernate.connection.url" value="jdbc:mysql://localhost:3306/stagiaire"/>
    </properties>
  </persistence-unit>

l' Exception :

Code :

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log4j:WARN No appenders could be found for logger (org.springframework.web.context.ContextLoader).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See <a href="http://logging.apache.org/log4j/1.2/faq.html#noconfig" target="_blank">http://logging.apache.org/log4j/1.2/faq.html#noconfig</a> for more info.
[WARN] Server class 'javax.validation.Validation' could not be found in the web app, but was found on the system classpath
   [WARN] Adding classpath entry 'file:/F:/Logiciel/eclipse-jee-indigo-win32-x86_64/eclipse/plugins/com.google.gwt.eclipse.sdkbundle_2.4.0.v201205091048-rel-r37/gwt-2.4.0/validation-api-1.0.0.GA.jar' to the web app classpath for this session
   For additional info see: file:/F:/Logiciel/eclipse-jee-indigo-win32-x86_64/eclipse/plugins/com.google.gwt.eclipse.sdkbundle_2.4.0.v201205091048-rel-r37/gwt-2.4.0/doc/helpInfo/webAppClassPath.html
Starting Jetty on port 8888
   [WARN] Failed startup of context com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload@398323{/,C:\Users\Ssefyou\workspace\GwtSpringHiberJpa\war}
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: MyPersistenceUnit] Unable to configure EntityManagerFactory
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1455)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:567)
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464)
	at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:385)
	at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:284)
	at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:111)
	at org.mortbay.jetty.handler.ContextHandler.startContext(ContextHandler.java:543)
	at org.mortbay.jetty.servlet.Context.startContext(Context.java:136)
	at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1220)
	at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:513)
	at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:448)
	at com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload.doStart(JettyLauncher.java:468)
	at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39)
	at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
	at org.mortbay.jetty.handler.RequestLogHandler.doStart(RequestLogHandler.java:115)
	at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39)
	at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
	at org.mortbay.jetty.Server.doStart(Server.java:222)
	at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39)
	at com.google.gwt.dev.shell.jetty.JettyLauncher.start(JettyLauncher.java:672)
	at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:509)
	at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1068)
	at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:811)
	at com.google.gwt.dev.DevMode.main(DevMode.java:311)
Caused by: javax.persistence.PersistenceException: [PersistenceUnit: MyPersistenceUnit] Unable to configure EntityManagerFactory
	at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:375)
	at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:55)
	at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:48)
	at org.springframework.orm.jpa.LocalEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalEntityManagerFactoryBean.java:92)
	at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:310)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1514)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1452)
	... 30 more
Caused by: org.hibernate.HibernateException: Unable to get the default Bean Validation factory
	at org.hibernate.cfg.beanvalidation.BeanValidationActivator.applyDDL(BeanValidationActivator.java:104)
	at org.hibernate.cfg.AnnotationConfiguration.applyBeanValidationConstraintsOnDDL(AnnotationConfiguration.java:477)
	at org.hibernate.cfg.AnnotationConfiguration.applyConstraintsToDDL(AnnotationConfiguration.java:429)
	at org.hibernate.cfg.AnnotationConfiguration.secondPassCompile(AnnotationConfiguration.java:403)
	at org.hibernate.cfg.Configuration.buildMappings(Configuration.java:1206)
	at org.hibernate.ejb.Ejb3Configuration.buildMappings(Ejb3Configuration.java:1453)
	at org.hibernate.ejb.EventListenerConfigurator.configure(EventListenerConfigurator.java:193)
	at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:1081)
	at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:279)
	at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:363)
	... 36 more
Caused by: java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.hibernate.cfg.beanvalidation.BeanValidationActivator.applyDDL(BeanValidationActivator.java:95)
	... 45 more
Caused by: org.hibernate.HibernateException: Unable to build the default ValidatorFactory
	at org.hibernate.cfg.beanvalidation.TypeSafeActivator.getValidatorFactory(TypeSafeActivator.java:302)
	at org.hibernate.cfg.beanvalidation.TypeSafeActivator.applyDDL(TypeSafeActivator.java:82)
	... 50 more
Caused by: javax.validation.ValidationException: Unable to find a default provider
	at javax.validation.Validation$GenericBootstrapImpl.configure(Validation.java:264)
	at javax.validation.Validation.buildDefaultValidatorFactory(Validation.java:111)
	at org.hibernate.cfg.beanvalidation.TypeSafeActivator.getValidatorFactory(TypeSafeActivator.java:299)
	... 51 more
   [WARN] Nested in org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: MyPersistenceUnit] Unable to configure EntityManagerFactory:
javax.validation.ValidationException: Unable to find a default provider
	at javax.validation.Validation$GenericBootstrapImpl.configure(Validation.java:264)
	at javax.validation.Validation.buildDefaultValidatorFactory(Validation.java:111)
	at org.hibernate.cfg.beanvalidation.TypeSafeActivator.getValidatorFactory(TypeSafeActivator.java:299)
	at org.hibernate.cfg.beanvalidation.TypeSafeActivator.applyDDL(TypeSafeActivator.java:82)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.hibernate.cfg.beanvalidation.BeanValidationActivator.applyDDL(BeanValidationActivator.java:95)
	at org.hibernate.cfg.AnnotationConfiguration.applyBeanValidationConstraintsOnDDL(AnnotationConfiguration.java:477)
	at org.hibernate.cfg.AnnotationConfiguration.applyConstraintsToDDL(AnnotationConfiguration.java:429)
	at org.hibernate.cfg.AnnotationConfiguration.secondPassCompile(AnnotationConfiguration.java:403)
	at org.hibernate.cfg.Configuration.buildMappings(Configuration.java:1206)
	at org.hibernate.ejb.Ejb3Configuration.buildMappings(Ejb3Configuration.java:1453)
	at org.hibernate.ejb.EventListenerConfigurator.configure(EventListenerConfigurator.java:193)
	at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:1081)
	at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:279)
	at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:363)
	at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:55)
	at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:48)
	at org.springframework.orm.jpa.LocalEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalEntityManagerFactoryBean.java:92)
	at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:310)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1514)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1452)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:567)
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464)
	at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:385)
	at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:284)
	at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:111)
	at org.mortbay.jetty.handler.ContextHandler.startContext(ContextHandler.java:543)
	at org.mortbay.jetty.servlet.Context.startContext(Context.java:136)
	at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1220)
	at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:513)
	at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:448)
	at com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload.doStart(JettyLauncher.java:468)
	at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39)
	at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
	at org.mortbay.jetty.handler.RequestLogHandler.doStart(RequestLogHandler.java:115)
	at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39)
	at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
	at org.mortbay.jetty.Server.doStart(Server.java:222)
	at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39)
	at com.google.gwt.dev.shell.jetty.JettyLauncher.start(JettyLauncher.java:672)
	at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:509)
	at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1068)
	at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:811)
	at com.google.gwt.dev.DevMode.main(DevMode.java:311)

j'ai essaye d'ajouter le jar de validation de hibernate (3 et aussi 4 ) mais rien n'a changé !!! ça fait 2 jours que je galere avec cette exception

merci pour votre aide

Lionkid · 07/06/2012, 19h04

Salut Youssef,

J'ai exactement le même problème que toi.

Aurais-tu trouvé une solution stp ? Perso, je pense que Spring n'arrive pas à initialiser les beans car il ne trouve pas (lors du parsing) le bon fichier (à savoir dans mon cas le fichier : 'database.properties') mais je pense que pour toi ça doit être un problème similaire.

Voici une partie de ma stack trace :

Code :

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Starting Jetty on port 8888
   [WARN] Failed startup of context com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload@33ec9e{/,C:\workspace\Teleprocedure\war}
org.springframework.beans.factory.BeanInitializationException: Could not load properties; nested exception is java.io.FileNotFoundException: Could not open ServletContext resource [/database.properties]
	at org.springframework.beans.factory.config.PropertyResourceConfigurer.postProcessBeanFactory(PropertyResourceConfigurer.java:87)
	at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:681)
	at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:656)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:446)
	at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:385)
	at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:284)
	at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:111)
	at org.mortbay.jetty.handler.ContextHandler.startContext(ContextHandler.java:543)
	at org.mortbay.jetty.servlet.Context.startContext(Context.java:136)
	at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1220)
	at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:513)
	at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:448)
	at com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload.doStart(JettyLauncher.java:468)
	at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39)
	at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
	at org.mortbay.jetty.handler.RequestLogHandler.doStart(RequestLogHandler.java:115)
	at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39)
	at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
	at org.mortbay.jetty.Server.doStart(Server.java:222)
	at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39)
	at com.google.gwt.dev.shell.jetty.JettyLauncher.start(JettyLauncher.java:672)
	at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:509)
	at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1068)
	at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:811)
	at com.google.gwt.dev.DevMode.main(DevMode.java:311)
Caused by: java.io.FileNotFoundException: Could not open ServletContext resource [/database.properties]
	at org.springframework.web.context.support.ServletContextResource.getInputStream(ServletContextResource.java:140)
	at org.springframework.core.io.support.PropertiesLoaderSupport.loadProperties(PropertiesLoaderSupport.java:181)
	at org.springframework.core.io.support.PropertiesLoaderSupport.mergeProperties(PropertiesLoaderSupport.java:161)
	at org.springframework.beans.factory.config.PropertyResourceConfigurer.postProcessBeanFactory(PropertyResourceConfigurer.java:78)
	... 24 more
   [WARN] Nested in org.springframework.beans.factory.BeanInitializationException: Could not load properties; nested exception is java.io.FileNotFoundException: Could not open ServletContext resource [/database.properties]:
java.io.FileNotFoundException: Could not open ServletContext resource [/database.properties]
	at org.springframework.web.context.support.ServletContextResource.getInputStream(ServletContextResource.java:140)
	at org.springframework.core.io.support.PropertiesLoaderSupport.loadProperties(PropertiesLoaderSupport.java:181)
	at org.springframework.core.io.support.PropertiesLoaderSupport.mergeProperties(PropertiesLoaderSupport.java:161)
	at org.springframework.beans.factory.config.PropertyResourceConfigurer.postProcessBeanFactory(PropertyResourceConfigurer.java:78)
	at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:681)
	at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:656)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:446)
	at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:385)
	at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:284)
	at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:111)
	at org.mortbay.jetty.handler.ContextHandler.startContext(ContextHandler.java:543)
	at org.mortbay.jetty.servlet.Context.startContext(Context.java:136)
	at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1220)
	at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:513)
	at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:448)
	at com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload.doStart(JettyLauncher.java:468)
	at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39)
	at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
	at org.mortbay.jetty.handler.RequestLogHandler.doStart(RequestLogHandler.java:115)
	at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39)
	at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
	at org.mortbay.jetty.Server.doStart(Server.java:222)
	at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39)
	at com.google.gwt.dev.shell.jetty.JettyLauncher.start(JettyLauncher.java:672)
	at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:509)
	at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1068)
	at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:811)
	at com.google.gwt.dev.DevMode.main(DevMode.java:311)

Edit : Ton problème n'est pas tout à fait le même que le mien après revue de tes logs ! En fait, le problème c'est que Spring n'arrive pas à instancier ton EntityManager. C'est peut-être normal car tu t'es trompé dans la déclaration de ton bean EntityManager : Il faut mettre "ref" et non "value"

Code :

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<bean class="org.springframework.orm.jpa.LocalEntityManagerFactoryBean" id="entityManagerFactory">
        <property name="persistenceUnitName" ref="MyPersistenceUnit"/>
    </bean>

Ma3a salam !

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