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- WARNING: The web application [] 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.
- SEVERE: The web application [] created a ThreadLocal with key of type [java.lang.ThreadLocal] (value [java.lang.ThreadLocal@1087985b]) and a value of type [org.hibernate.internal.SessionImpl] (value [SessionImpl(PersistenceContext[entityKeys=[],collectionKeys=[]];ActionQueue[insertions=[] updates=[] deletions=[] collectionCreations=[] collectionRemovals=[] collectionUpdates=[] unresolvedInsertDependencies=UnresolvedEntityInsertActions[]])]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
- SEVERE: The web application [] created a ThreadLocal with key of type [net.sf.json.AbstractJSON$1] (value [net.sf.json.AbstractJSON$1@362386d7]) and a value of type [java.util.HashSet] (value [[]]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
- SEVERE: The web application [] created a ThreadLocal with key of type [net.sf.json.AbstractJSON$1] (value [net.sf.json.AbstractJSON$1@362386d7]) and a value of type [java.util.HashSet] (value [[]]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
- <hibernate-configuration>
- <session-factory>
- <!-- Database connection settings -->
- <property name="connection.driver_class">
- com.mysql.jdbc.Driver
- </property>
- <property name="connection.url">
- jdbc:mysql://localhost:3306/myproject
- </property>
- <property name="connection.username">root</property>
- <property name="connection.password"></property>
- <!-- JDBC connection pool (use the built-in) -->
- <property name="connection.pool_size">12</property>
- <!-- SQL dialect -->
- <property name="dialect">
- org.hibernate.dialect.MySQLDialect
- </property>
- <!-- Enable Hibernate's automatic session context management -->
- <property name="current_session_context_class">thread</property>
- <!-- Disable the second-level cache -->
- <!-- <property name="cache.provider_class">
- org.hibernate.cache.EhCacheProvider
- </property>
- <property name="hibernate.cache.use_query_cache">true</property>-->
- <!-- Echo all executed SQL to stdout -->
- <property name="show_sql">true</property>
- public class HibernateUtil {
- private static ServiceRegistry serviceRegistry;
- private static final ThreadLocal<Session> threadLocal = new ThreadLocal();
- private static SessionFactory sessionFactory;
- private static SessionFactory configureSessionFactory() {
- try {
- Configuration configuration = new Configuration();
- configuration.configure();
- serviceRegistry = new ServiceRegistryBuilder().applySettings(configuration.getProperties()).buildServiceRegistry();
- sessionFactory = configuration.buildSessionFactory(serviceRegistry);
- return sessionFactory;
- } catch (HibernateException e) {
- System.out.append("** Exception in SessionFactory **");
- e.printStackTrace();
- }
- return sessionFactory;
- }
- static {
- try {
- sessionFactory = configureSessionFactory();
- } catch (Exception e) {
- System.err.println("%%%% Error Creating SessionFactory %%%%");
- e.printStackTrace();
- }
- }
- private HibernateUtil() {
- }
- public static SessionFactory getSessionFactory() {
- return sessionFactory;
- }
- public static Session getSession() throws HibernateException {
- Session session = threadLocal.get();
- if (session == null || !session.isOpen()) {
- if (sessionFactory == null) {
- rebuildSessionFactory();
- }
- session = (sessionFactory != null) ? sessionFactory.openSession() : null;
- threadLocal.set(session);
- }
- return session;
- }
- public static void rebuildSessionFactory() {
- try {
- sessionFactory = configureSessionFactory();
- } catch (Exception e) {
- System.err.println("%%%% Error Creating SessionFactory %%%%");
- e.printStackTrace();
- }
- }
- public static void closeSession() throws HibernateException {
- Session session = (Session) threadLocal.get();
- threadLocal.set(null);
- if (session != null) {
- session.close();
- }
- }
- }
- String url = "your JDBC url";
- Driver driver = DriverManager.getDriver(url);
- DriverManager.deregisterDriver(driver);
- public class CleanupListener implements ServletContextListener {
- public void contextDestroyed(ServletContextEvent arg0) {
- // enter cleanup code here
- }
- public void contextInitialized(ServletContextEvent arg0) { }
- }
- <listener>
- <listener-class>com.example.CleanupListener</listener-class>
- </listener>
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