java.lang.IllegalArgumentException: No persistence unit with name 'MY_P

java.lang.IllegalArgumentException: No persistence unit with name 'MY_P_U' found

bonjour a tous, je suis nouveau sur java Spring, j'ai développe une petite application, mais au moment de l'exécuter sur le serveur tomcat j'ai l'erreur suivante java.lang.IllegalArgumentException: No persistence unit with name 'MY_P_U' found. pourtant quand je lance mon programme en tant qu'application java tout fonctionne bien. les fichiers persistence.xml et applicationContext.xml sont là et se trouve dans les ressources du projet.
la trace de l'erreur

Citation:

ERROR: org.springframework.web.context.ContextLoader - Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in ServletContext resource [/WEB-INF/spring/applicationContext.xml]: Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: No persistence unit with name 'MY_P_U' found

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1578)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:545)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1076)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:851)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:541)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:444)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:326)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:107)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:5099)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5615)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1571)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1561)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.IllegalArgumentException: No persistence unit with name 'MY_P_U' found

at org.springframework.orm.jpa.persistenceunit.DefaultPersistenceUnitManager.obtainPersistenceUnitInfo(DefaultPersistenceUnitManager.java:697)
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.determinePersistenceUnitInfo(LocalContainerEntityManagerFactoryBean.java:357)
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:314)
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:373)
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:362)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1637)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1574)
... 21 more
août 05, 2016 1:51:13 PM org.apache.catalina.core.StandardContext listenerStart
GRAVE: Exception lors de l'envoi de l'évènement contexte initialisé (context initialized) à l'instance de classe d'écoute (listener) org.springframework.web.context.ContextLoaderListener
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in ServletContext resource [/WEB-INF/spring/applicationContext.xml]: Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: No persistence unit with name 'MY_P_U' found

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1578)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:545)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1076)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:851)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:541)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:444)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:326)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:107)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:5099)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5615)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1571)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1561)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.IllegalArgumentException: No persistence unit with name 'MY_P_U' found

at org.springframework.orm.jpa.persistenceunit.DefaultPersistenceUnitManager.obtainPersistenceUnitInfo(DefaultPersistenceUnitManager.java:697)
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.determinePersistenceUnitInfo(LocalContainerEntityManagerFactoryBean.java:357)
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:314)
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:373)
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:362)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1637)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1574)
... 21 more

août 05, 2016 1:51:13 PM org.apache.catalina.core.StandardContext startInternal
GRAVE: One or more listeners failed to start. Full details will be found in the appropriate container log file
août 05, 2016 1:51:13 PM org.apache.catalina.core.StandardContext startInternal
GRAVE: Erreur de démarrage du contexte [/lw] suite aux erreurs précédentes
août 05, 2016 1:51:13 PM org.apache.catalina.core.ApplicationContext log
INFOS: Closing Spring root WebApplicationContext
août 05, 2016 1:51:13 PM org.apache.catalina.loader.WebappClassLoaderBase clearReferencesJdbc
GRAVE: The web application [/lw] registered the JDBC driver [com.mysql.jdbc.Driver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.
août 05, 2016 1:51:13 PM org.apache.coyote.AbstractProtocol start
INFOS: Starting ProtocolHandler ["http-bio-8888"]
août 05, 2016 1:51:13 PM org.apache.coyote.AbstractProtocol start
INFOS: Starting ProtocolHandler ["ajp-bio-8810"]
août 05, 2016 1:51:13 PM org.apache.catalina.startup.Catalina start
INFOS: Server startup in 12646 ms

Mon fichier applicationContext.xml
Code:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 <?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:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans <a href="http://www.springframework.org/schema/beans/spring-beans.xsd" target="_blank">http://www.springframework.org/schem...ring-beans.xsd</a> <a href="http://www.springframework.org/schema/context" target="_blank">http://www.springframework.org/schema/context</a> <a href="http://www.springframework.org/schema/context/spring-context-4.3.xsd" target="_blank">http://www.springframework.org/schem...ontext-4.3.xsd</a> <a href="http://www.springframework.org/schema/tx" target="_blank">http://www.springframework.org/schema/tx</a> http://www.springframework.org/schema/tx/spring-tx-4.3.xsd"> <bean id="lwdao" class="org.nyx.lw.dao.LendoWalletDaoImpl"></bean> <bean id="metier" class="org.nyx.lw.metier.LendoWalletMetierImpl"> <property name="lwdao" ref="lwdao"></property> </bean> <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> <property name="driverClassName" value="com.mysql.jdbc.Driver"></property> <property name="url" value="jdbc:mysql://localhost:3306/dblendowallet"></property> <property name="username" value="root"></property> <property name="password" value="root"></property> </bean> <bean id="persistenceUnitManager" class="org.springframework.orm.jpa.persistenceunit.DefaultPersistenceUnitManager"> <property name="persistenceXmlLocations"> <list> <value>classpath*:META-INF/persistence.xml </value> </list> </property> <property name="defaultDataSource" ref="dataSource"></property> </bean> <bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"> <property name="persistenceUnitManager" ref="persistenceUnitManager"></property> <property name="persistenceUnitName" value="MY_P_U"></property> </bean> <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager"> <property name="entityManagerFactory" ref="entityManagerFactory"></property> </bean> <tx:annotation-driven transaction-manager="transactionManager"/> <context:annotation-config></context:annotation-config> </beans>
le fichier persistence.xml
Code:

1 2 3 4 5 6 7 8 9 10 11 12 13 <?xml version="1.0" encoding="UTF-8"?> <persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd" version="2.0"> <persistence-unit name="MY_P_U" transaction-type="RESOURCE_LOCAL"> <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider> <properties> <property name="hibernate.show_sql" value="true"/> <property name="hibernate.hbm2ddl.auto" value="update"/> </properties> </persistence-unit> </persistence>
Toute t'aide sera la bienvenue; Merci d'avance

Bonjour,

Il ne trouve pas le fichier persistence.xml.

Citation:

Code:

<value>classpath*:META-INF/persistence.xml </value>

C'est que Spring va chercher tous les fichiers persistence.xml dans le répertoire /WEB-INF/classes/META-INF/ du répertoire de déploiement de ton application dans tomcat, et qu'il ne trouve pas.
L'utilisation de classpath* ne lance aucune Exception si spring ne retrouve aucun fichier par contre si tu utilises classpath:, tu auras un FileNotFoundException, ce qui t'alertera du vrai problème.
Met le fichier persistence.xml dans ton src/main/ressources/META-INF/, et sera placé normalement dans /WEB-INF/classes/META-INF/ lors du deploiement. Ensuite modifie ton xml

Code:

<value>classpath:META-INF/persistence.xml</value>

A+.

Merci beaucoup, j'ai vu suivit des conseils
en plus de ca il yavait un espace que j'avais oublié sur <value>classpath:META-INF/persistence.xml </value>; lorsque j'ai supprimé cette espace tout est passé
encore merci