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Configurez hibernate pour vous connecter à la base de données via la source de données JNDI

Bonjour à tous J'utilise Hibernate + Struts2 + Tomcat6 + Mysql comme framework J2EE. J'utilise le mécanisme de regroupement des connexions intégré à hibernate, mais il s'est avéré problématique que mysql ferme ses connexions après 8 heures. Quoi qu'il en soit, j'ai cherché un peu dans Google et trouvé que je devrais avoir mes connexions via la source de données JNDI, mais je ne pouvais pas atteindre un bon tutoriel complet à ce sujet. Quelles mesures dois-je prendre pour le faire? donnez-moi s'il vous plaît assez de détails, je suis un peu nouveau sur ce . voici mon hibernate.cfg.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
  <session-factory>

    <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
    <property name="hibernate.connection.url">
            jdbc:mysql://localhost/hposg?characterEncoding=UTF-8
    </property>
    <property name="connection.username">root</property>
    <property name="connection.password"></property>
    <property name="show_sql">true</property>
    <property name="dialect">org.hibernate.dialect.MySQLDialect</property>
    <property name="current_session_context_class">thread</property>
    <property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property>
    <property name="hbm2ddl.auto">update</property>

    <property name="hibernate.max_fetch_depth">3</property>

    <property name="hibernate.connection.provider_class">org.hibernate.connection.C3P0ConnectionProvider</property>
    <property name="hibernate.c3p0.acquire_increment">2</property>
    <property name="hibernate.c3p0.idle_test_period">300</property>
    <property name="hibernate.c3p0.timeout">1800</property>
    <property name="hibernate.c3p0.max_size">25</property>
    <property name="hibernate.c3p0.min_size" >3</property>
    <property name="hibernate.c3p0.max_statement">0</property>
    <property name="hibernate.c3p0.preferredTestQuery">select 1;</property>
    <property name="hibernate.c3p0.testConnectionOnCheckout">true</property>
    <property name="hibernate.c3p0.validate">true</property>

      <!-- Mapping files -->

      <mapping resource="com/hposg/hibernate/resources/Player.hbm.xml"/>
      <mapping resource="com/hposg/hibernate/resources/Game.hbm.xml"/>
      ...

  </session-factory>
</hibernate-configuration>

J'ai également essayé ceci mais cela n'a pas fonctionné: Création d'un fichier context.xml dans WebContent/META-INF contenant:

<Context path="" docBase="../RSGames" debug="0" reloadable="true">
    <Resource name="jdbc/RSGames" auth="Container" type="javax.sql.DataSource"
         username="root"
         password=""
         driverClassName="com.mysql.jdbc.Driver"
         url="jdbc:mysql://localhost:3306/hposg?autoReconnect=true&amp;useUnicode=true&amp;characterEncoding=utf8"
         maxActive="15"
         maxIdle="7"
         validationQuery="Select 1" />
</Context>

mettre ceci dans web.xml:

<resource-ref>
    <description>Connection Pool</description>
    <res-ref-name>jdbc/RSGames</res-ref-name>
    <res-type>javax.sql.Datasource</res-type>
    <res-auth>Container</res-auth>
</resource-ref>

et en modifiant la configuration hibernate comme ceci:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
  <session-factory>
  ...
    <property name="connection.datasource">Java:comp/env/jdbc/RSGames</property>
  ...
  </session-factory>
</hibernate-configuration>

comme je l'ai mentionné précédemment, il n'est pas connecté à la base de données de cette façon. des idées?

[EDIT] Lorsque j'exécute l'application, j'obtiens cette exception:

Mar 16, 2011 12:29:13 AM com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask run
WARNING: com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@1f18cbe -- Acquisition Attempt Failed!!! Clearing pending acquires. While trying to acquire a needed new resource, we failed to succeed more than the maximum number of allowed acquisition attempts (30). Last acquisition attempt exception: 
Java.lang.NullPointerException
    at Sun.jdbc.odbc.JdbcOdbcDriver.getProtocol(Unknown Source)
    at Sun.jdbc.odbc.JdbcOdbcDriver.knownURL(Unknown Source)
    at Sun.jdbc.odbc.JdbcOdbcDriver.acceptsURL(Unknown Source)
    at Java.sql.DriverManager.getDriver(Unknown Source)
    at com.mchange.v2.c3p0.DriverManagerDataSource.driver(DriverManagerDataSource.Java:224)
    at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.Java:120)
    at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.Java:143)
    at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.Java:132)
    at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.Java:137)
    at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.Java:1014)
    at com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.Java:32)
    at com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run(BasicResourcePool.Java:1810)
    at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.Java:547)
Mar 16, 2011 12:29:13 AM com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask run
WARNING: com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@14f1726 -- Acquisition Attempt Failed!!! Clearing pending acquires. While trying to acquire a needed new resource, we failed to succeed more than the maximum number of allowed acquisition attempts (30). Last acquisition attempt exception: 
Java.lang.NullPointerException
    at Sun.jdbc.odbc.JdbcOdbcDriver.getProtocol(Unknown Source)
    at Sun.jdbc.odbc.JdbcOdbcDriver.knownURL(Unknown Source)
    at Sun.jdbc.odbc.JdbcOdbcDriver.acceptsURL(Unknown Source)
    at Java.sql.DriverManager.getDriver(Unknown Source)
    at com.mchange.v2.c3p0.DriverManagerDataSource.driver(DriverManagerDataSource.Java:224)
    at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.Java:120)
    at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.Java:143)
    at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.Java:132)
    at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.Java:137)
    at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.Java:1014)
    at com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.Java:32)
    at com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run(BasicResourcePool.Java:1810)
    at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.Java:547)
Mar 16, 2011 12:29:13 AM com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask run
WARNING: com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@cad437 -- Acquisition Attempt Failed!!! Clearing pending acquires. While trying to acquire a needed new resource, we failed to succeed more than the maximum number of allowed acquisition attempts (30). Last acquisition attempt exception: 
Java.lang.NullPointerException
    at Sun.jdbc.odbc.JdbcOdbcDriver.getProtocol(Unknown Source)
    at Sun.jdbc.odbc.JdbcOdbcDriver.knownURL(Unknown Source)
    at Sun.jdbc.odbc.JdbcOdbcDriver.acceptsURL(Unknown Source)
    at Java.sql.DriverManager.getDriver(Unknown Source)
    at com.mchange.v2.c3p0.DriverManagerDataSource.driver(DriverManagerDataSource.Java:224)
    at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.Java:120)
    at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.Java:143)
    at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.Java:132)
    at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.Java:137)
    at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.Java:1014)
    at com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.Java:32)
    at com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run(BasicResourcePool.Java:1810)
    at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.Java:547)
29994 [http-8081-3] WARN org.hibernate.cfg.SettingsFactory - Could not obtain connection to query metadata
Java.sql.SQLException: Connections could not be acquired from the underlying database!
    at com.mchange.v2.sql.SqlUtils.toSQLException(SqlUtils.Java:106)
    at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.Java:529)
    at com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.getConnection(AbstractPoolBackedDataSource.Java:128)
    at org.hibernate.connection.C3P0ConnectionProvider.getConnection(C3P0ConnectionProvider.Java:78)
    at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.Java:114)
    at org.hibernate.cfg.Configuration.buildSettingsInternal(Configuration.Java:2163)
    at org.hibernate.cfg.Configuration.buildSettings(Configuration.Java:2159)
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.Java:1383)
    at com.hposg.hibernate.util.HibernateUtil.buildSessionFactory(HibernateUtil.Java:12)
    at com.hposg.hibernate.util.HibernateUtil.<clinit>(HibernateUtil.Java:7)
    at com.hposg.login.LoginFactory.doLogin(LoginFactory.Java:25)
    at com.hposg.controller.struts.LoginAction.execute(LoginAction.Java:59)
    at Sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at Sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at Sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at Java.lang.reflect.Method.invoke(Unknown Source)
    at com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.Java:441)
    at com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.Java:280)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.Java:243)
    at com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.Java:165)
    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.Java:87)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.Java:237)
    at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.Java:252)
    at org.Apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.Java:68)
    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.Java:87)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.Java:237)
    at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.Java:122)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.Java:237)
    at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.Java:195)
    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.Java:87)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.Java:237)
    at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.Java:195)
    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.Java:87)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.Java:237)
    at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.Java:179)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.Java:237)
    at org.Apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.Java:75)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.Java:237)
    at org.Apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.Java:94)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.Java:237)
    at org.Apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.Java:235)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.Java:237)
    at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.Java:89)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.Java:237)
    at com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.Java:130)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.Java:237)
    at org.Apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.Java:267)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.Java:237)
    at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.Java:126)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.Java:237)
    at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.Java:138)
    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.Java:87)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.Java:237)
    at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.Java:165)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.Java:237)
    at org.Apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.Java:164)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.Java:237)
    at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.Java:179)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.Java:237)
    at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.Java:176)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.Java:237)
    at org.Apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.Java:52)
    at org.Apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.Java:488)
    at org.Apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.Java:395)
    at org.Apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.Java:235)
    at org.Apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.Java:206)
    at org.Apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.Java:233)
    at org.Apache.catalina.core.StandardContextValve.invoke(StandardContextValve.Java:191)
    at org.Apache.catalina.core.StandardHostValve.invoke(StandardHostValve.Java:128)
    at org.Apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.Java:102)
    at org.Apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.Java:109)
    at org.Apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.Java:286)
    at org.Apache.coyote.http11.Http11Processor.process(Http11Processor.Java:845)
    at org.Apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.Java:583)
    at org.Apache.Tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.Java:447)
    at Java.lang.Thread.run(Unknown Source)
Caused by: com.mchange.v2.resourcepool.CannotAcquireResourceException: A ResourcePool could not acquire a resource from its primary factory or source.
    at com.mchange.v2.resourcepool.BasicResourcePool.awaitAvailable(BasicResourcePool.Java:1319)
    at com.mchange.v2.resourcepool.BasicResourcePool.prelimCheckoutResource(BasicResourcePool.Java:557)
    at com.mchange.v2.resourcepool.BasicResourcePool.checkoutResource(BasicResourcePool.Java:477)
    at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.Java:525)
    ... 74 more
javahibernatejndiconnection-pooling
26
SJ.Jafari

Apparemment, vous avez bien fait les choses. Mais voici une liste d'éléments dont vous aurez besoin avec des exemples provenant d'une application opérationnelle:

1) Un fichier context.xml dans META-INF, spécifiant votre source de données:

<Context>
    <Resource 
        name="jdbc/DsWebAppDB" 
        auth="Container" 
        type="javax.sql.DataSource" 
        username="sa" 
        password="" 
        driverClassName="org.h2.Driver" 
        url="jdbc:h2:mem:target/test/db/h2/hibernate" 
        maxActive="8" 
        maxIdle="4"/>
</Context>

2) web.xml qui indique au conteneur que vous utilisez cette ressource:

<resource-env-ref>
    <resource-env-ref-name>jdbc/DsWebAppDB</resource-env-ref-name>
    <resource-env-ref-type>javax.sql.DataSource</resource-env-ref-type>
</resource-env-ref>

3) Configuration Hibernate qui consomme la source de données. Dans ce cas, c'est un persistence.xml, mais c'est similaire dans hibernate.cfg.xml

<persistence-unit name="dswebapp">
    <provider>org.hibernate.ejb.HibernatePersistence</provider>
    <properties>
        <property name="hibernate.dialect" value="org.hibernate.dialect.H2Dialect" />
        <property name="hibernate.connection.datasource" value="Java:comp/env/jdbc/DsWebAppDB"/>
    </properties>
</persistence-unit>
27
jpkrohling

Configuration JNDI Tomcat-7:

Pas:

  1. Ouvrez le fichier server.xml dans le dossier Tomcat-dir/conf.
  2. Ajoutez ci-dessous la balise <Resource> avec vos détails de base de données à l'intérieur de <GlobalNamingResources>
<Resource name="jdbc/mydb"
          global="jdbc/mydb"
          auth="Container"
          type="javax.sql.DataSource"
          driverClassName="com.mysql.jdbc.Driver"
          url="jdbc:mysql://localhost:3306/test"
          username="root"
          password=""
          maxActive="10"
          maxIdle="10"
          minIdle="5"
          maxWait="10000"/>
  1. Enregistrez le fichier server.xml
  2. Ouvrez le fichier context.xml dans le dossier Tomcat-dir/conf.
  3. Ajoutez le <ResourceLink> ci-dessous dans la balise <Context>.
<ResourceLink name="jdbc/mydb" 
              global="jdbc/mydb"
              auth="Container"
              type="javax.sql.DataSource" />
  1. Enregistrez le context.xml
  2. Ouvrez le fichier hibernate-cfg.xml et ajoutez et supprimez les propriétés ci-dessous.
Adding:
-------
<property name="connection.datasource">Java:comp/env/jdbc/mydb</property>

Removing:
--------
<!--<property name="connection.url">jdbc:mysql://localhost:3306/mydb</property> -->
<!--<property name="connection.username">root</property> -->
<!--<property name="connection.password"></property> -->
  1. Enregistrez le fichier et mettez le dernier fichier .WAR dans Tomcat.
  2. Redémarrez le Tomcat. la connexion à la base de données fonctionnera.
8
MAA

À l'intérieur du fichier applicationContext.xml d'un projet d'application Web maven Hibernet, les paramètres définis ci-dessous fonctionnaient pour moi.

<?xml version="1.0" encoding="UTF-8"?>
<beans:beans xmlns="http://www.springframework.org/schema/mvc"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:beans="http://www.springframework.org/schema/beans"
    xmlns:jee="http://www.springframework.org/schema/jee"
    xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"
    xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
        http://www.springframework.org/schema/jee 
        http://www.springframework.org/schema/jee/spring-jee-3.0.xsd">




  <jee:jndi-lookup id="dataSource"
                 jndi-name="Give_DataSource_Path_From_Your_Server"
                 expected-type="javax.sql.DataSource" />


Espérons que cela aidera quelqu'un.Merci!

0
Anurag_BEHS

J'obtenais la même erreur dans IBM Websphere avec les fichiers jar c3p0. J'ai la base de données Oracle 10g. J'ai simplement ajouté les fichiers oraclejdbc.jar dans la machine virtuelle Java du serveur d'applications dans IBM Classpath à l'aide de Websphere Console et l'erreur a été résolue.

Le fichier oraclejdbc.jar doit être défini avec vos fichiers jar C3P0 dans votre chemin d'accès à la classe de serveur, quel qu'il soit, Tomcat, glassfish of IBM.

0
Pankaj Mehra