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POHibernate mapping exception: Could not get constructor for org.hibernate.entity.SingleTableEntityPersister
 

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    <p>The post <a href="https://stackoverflow.com/questions/9104221/hibernate-buildsessionfactory-exception">Hibernate buildSessionFactory() Exception</a> and <a href="https://stackoverflow.com/questions/18042247/could-not-get-constructor-for-org-hibernate-persister-entity-singletableentitype">Could not get constructor for org.hibernate.persister.entity.SingleTableEntityPersister</a> discusses the similar situation, however I still can't resolve why following code is generating <strong>org.hibernate.MappingException: Could not get constructor for org.hibernate.persister.entity.SingleTableEntityPersister</strong> error. I am creating a login, using JSP, Servlet and Hibernate. Please help me resol</p> <p>Tomcat log:</p> <pre><code>Aug 08, 2013 5:07:58 PM org.apache.catalina.core.AprLifecycleListener init INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Program Files\Java\jre7\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\Intel\DMIX;C:\Program Files (x86)\ATI Technologies\ATI.ACE\Core-Static;C:\Program Files\TortoiseSVN\bin;C:\Program Files (x86)\Microsoft SQL Server\100\Tools\Binn\;C:\Program Files (x86)\Microsoft SQL Server\100\DTS\Binn\;. Aug 08, 2013 5:07:58 PM org.apache.tomcat.util.digester.SetPropertiesRule begin WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:Assignment5' did not find a matching property. Aug 08, 2013 5:07:58 PM org.apache.coyote.AbstractProtocolHandler init INFO: Initializing ProtocolHandler ["http-bio-8080"] Aug 08, 2013 5:07:58 PM org.apache.coyote.AbstractProtocolHandler init INFO: Initializing ProtocolHandler ["ajp-bio-8009"] Aug 08, 2013 5:07:58 PM org.apache.catalina.startup.Catalina load INFO: Initialization processed in 479 ms Aug 08, 2013 5:07:58 PM org.apache.catalina.core.StandardService startInternal INFO: Starting service Catalina Aug 08, 2013 5:07:58 PM org.apache.catalina.core.StandardEngine startInternal INFO: Starting Servlet Engine: Apache Tomcat/7.0.12 Aug 08, 2013 5:08:00 PM org.apache.coyote.AbstractProtocolHandler start INFO: Starting ProtocolHandler ["http-bio-8080"] Aug 08, 2013 5:08:00 PM org.apache.coyote.AbstractProtocolHandler start INFO: Starting ProtocolHandler ["ajp-bio-8009"] Aug 08, 2013 5:08:00 PM org.apache.catalina.startup.Catalina start INFO: Server startup in 1186 ms Aug 08, 2013 5:08:04 PM org.hibernate.annotations.common.Version &lt;clinit&gt; INFO: HCANN000001: Hibernate Commons Annotations {4.0.2.Final} Aug 08, 2013 5:08:04 PM org.hibernate.Version logVersion INFO: HHH000412: Hibernate Core {4.2.3.Final} Aug 08, 2013 5:08:04 PM org.hibernate.cfg.Environment &lt;clinit&gt; INFO: HHH000205: Loaded properties from resource hibernate.properties: {hibernate.connection.driver_class=org.h2.Driver, hibernate.dialect=org.hibernate.dialect.H2Dialect, hibernate.max_fetch_depth=5, hibernate.format_sql=true, hibernate.generate_statistics=true, hibernate.connection.username=sa, hibernate.connection.url=jdbc:h2:mem:db1;DB_CLOSE_DELAY=-1;MVCC=TRUE, hibernate.bytecode.use_reflection_optimizer=false, hibernate.jdbc.batch_versioned_data=true, hibernate.connection.pool_size=5} Aug 08, 2013 5:08:04 PM org.hibernate.cfg.Environment buildBytecodeProvider INFO: HHH000021: Bytecode provider name : javassist Aug 08, 2013 5:08:04 PM org.hibernate.cfg.Configuration configure INFO: HHH000043: Configuring from resource: /hibernate.cfg.xml Aug 08, 2013 5:08:04 PM org.hibernate.cfg.Configuration getConfigurationInputStream INFO: HHH000040: Configuration resource: /hibernate.cfg.xml Aug 08, 2013 5:08:04 PM org.hibernate.internal.util.xml.DTDEntityResolver resolveEntity WARN: HHH000223: Recognized obsolete hibernate namespace http://hibernate.sourceforge.net/. Use namespace http://www.hibernate.org/dtd/ instead. Refer to Hibernate 3.6 Migration Guide! Aug 08, 2013 5:08:04 PM org.hibernate.cfg.Configuration doConfigure INFO: HHH000041: Configured SessionFactory: null Aug 08, 2013 5:08:04 PM org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure INFO: HHH000402: Using Hibernate built-in connection pool (not for production use!) Aug 08, 2013 5:08:04 PM org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure INFO: HHH000115: Hibernate connection pool size: 5 Aug 08, 2013 5:08:04 PM org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure INFO: HHH000006: Autocommit mode: false Aug 08, 2013 5:08:04 PM org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure INFO: HHH000401: using driver [com.mysql.jdbc.Driver] at URL [jdbc:mysql://localhost:3306/Assignment5] Aug 08, 2013 5:08:04 PM org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure INFO: HHH000046: Connection properties: {user=root, password=****} Aug 08, 2013 5:08:05 PM org.hibernate.dialect.Dialect &lt;init&gt; INFO: HHH000400: Using dialect: org.hibernate.dialect.MySQLInnoDBDialect Aug 08, 2013 5:08:05 PM org.hibernate.engine.jdbc.internal.LobCreatorBuilder useContextualLobCreation INFO: HHH000423: Disabling contextual LOB creation as JDBC driver reported JDBC version [3] less than 4 Aug 08, 2013 5:08:05 PM org.hibernate.engine.transaction.internal.TransactionFactoryInitiator initiateService INFO: HHH000399: Using default transaction strategy (direct JDBC transactions) Aug 08, 2013 5:08:05 PM org.hibernate.hql.internal.ast.ASTQueryTranslatorFactory &lt;init&gt; INFO: HHH000397: Using ASTQueryTranslatorFactory Initializing session factory failed: org.hibernate.MappingException: Could not get constructor for org.hibernate.persister.entity.SingleTableEntityPersister java.lang.ExceptionInInitializerError </code></pre> <p>My POJO class for User is:</p> <pre><code>@Entity @Table(name = "Users") public class User implements Serializable { private static final long serialVersionUID = 1986328586398921108L; @Id @GeneratedValue @Column(name="ID") private Long id; @NotNull @Column(name="NAME", unique = true) private String name; @NotNull @Column(name="PASSWORD") private String password; public User() {} public Long getId() { return id; } public void setId(Long id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } } </code></pre> <p>Corresponding MySQL database table is:</p> <pre><code>create table Users ( ID bigint not null auto_increment primary key, NAME varchar(20) not null unique, PASSWORD varchar(20) not null ); </code></pre> <p>hibernate.cfg.xml (placed in src folder)</p> <pre><code>&lt;!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd"&gt; &lt;hibernate-configuration&gt; &lt;session-factory&gt; &lt;!-- hibernate dialect --&gt; &lt;property name="hibernate.dialect"&gt;org.hibernate.dialect.MySQLInnoDBDialect&lt;/property&gt; &lt;!-- Logging all generated SQL to console --&gt; &lt;property name="show_sql"&gt;true&lt;/property&gt; &lt;property name="format_sql"&gt;true&lt;/property&gt; &lt;!-- Database connection settings: MySQL --&gt; &lt;property name="hibernate.connection.driver_class"&gt;com.mysql.jdbc.Driver&lt;/property&gt; &lt;property name="hibernate.connection.url"&gt;jdbc:mysql://localhost:3306/RnD&lt;/property&gt; &lt;property name="hibernate.connection.username"&gt;root&lt;/property&gt; &lt;property name="hibernate.connection.password"&gt;*******&lt;/property&gt; &lt;!--&lt;property name="transaction.factory_class"&gt;org.hibernate.transaction.JDBCTransactionFactory&lt;/property&gt; --&gt; &lt;!-- Enable Hibernate's automatic session context management --&gt; &lt;property name="current_session_context_class"&gt;thread&lt;/property&gt; &lt;!-- Name the annotated User class --&gt; &lt;mapping class = "pojo.User"/&gt; &lt;/session-factory&gt; &lt;/hibernate-configuration&gt; </code></pre> <p>Please also comment is it beneficial to serialize class. Thanks in advance!</p> <p><strong>Edit 1:</strong> Class, I'm initializing SessionFactory within:</p> <pre><code>public class HibernateUtil { private static final SessionFactory sessionFactory; static { try { Configuration configuration = new Configuration(); configuration.configure(); ServiceRegistry serviceRegistry = new ServiceRegistryBuilder() .applySettings(configuration.getProperties()) .buildServiceRegistry(); sessionFactory = configuration.buildSessionFactory(serviceRegistry); } catch (Throwable e) { System.err.println("Initializing session factory failed: " + e); throw new ExceptionInInitializerError(e); } } public static SessionFactory getSessionFactory() { return sessionFactory; } } </code></pre>
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