Trouble connecting to MySQL database with Hibernate

Question

I'm using red hat studio pro. I created an hibernate.cfg.xml file with
the hibernate tools.
Code:
<?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="hibernate.connection.driver_jar">mysql-connector-
java-5.0.6-bin.jar</property>
<property
name="hibernate.connection.driver_class">org.gjt.mm.mysql.Driver</
property>
<property name="hibernate.connection.password"> </property>
<property name="hibernate.connection.url">jdbc:mysql://
localhost/eshop</property>
<property name="hibernate.connection.username">user</property>
<property
name="hibernate.dialect">org.hibernate.dialect.MySQLInnoDBDialect</
property>
</session-factory>
</hibernate-configuration>
Reverse Engineering was no problem, it found the database, could read
the tables and create the java classes.
Now I tried to open a simple connection to the database and that
doesn*t work. I always get a "no suitable driver found" error.
Code:
     Configuration config = new Configuration()
     .setProperty("hibernate.dialect",
"org.hibernate.dialect.MySQLInnoDBDialect")
     .setProperty("hibernate.connection.driver_class",
"org.gjt.mm.mysql.Driver")
     .setProperty("hibernate.connection.driver_jar", "mysql-connector-
java-5.0.6-bin.jar")
     .setProperty("hibernate.connection.password", " ")
     .setProperty("hibernate.connection.url", "jdbc:mysql://localhost:
3306/eshop")
     .setProperty("hibernate.connection.username", "user")
     .addClass(Adressen.class);
     config.configure();
     SessionFactory sessionFactory = config.buildSessionFactory();
     Session session = sessionFactory.openSession();
     Transaction tx = null;
     try {
          tx = session.beginTransaction();
          System.out.println("works");
     } catch (Exception e) {
          if (tx != null) {
               tx.rollback();
               System.out.println("error - rollback");
     } finally {
          session.close();
     sessionFactory.close();
The errors I'm getting are:
Code:
23:41:05,187 INFO [Environment] Hibernate 3.2.4.sp1
23:41:05,187 INFO [Environment] loaded properties from resource
hibernate.properties: {hibernate.co
nnection.username=user, hibernate.connection.password=****,
hibernate.dialect=org.hibernate.dialect.
MySQLInnoDBDialect, hibernate.connection.url=jdbc:mysql://localhost:
3306/eshop, hibernate.bytecode.u
se_reflection_optimizer=false,
hibernate.connection.driver_class=com.mysql.jdbc.Driver}
23:41:05,187 INFO [Environment] Bytecode provider name : javassist
23:41:05,203 INFO [Environment] using JDK 1.4 java.sql.Timestamp
handling
23:41:05,312 INFO [Configuration] Reading mappings from resource:
hibernateGenerated/Adressen.hbm.x
ml
23:41:05,312 INFO [Configuration] Reading mappings from resource:
hibernateGenerated/Adressen.hbm.x
ml
23:41:05,515 INFO [HbmBinder] Mapping class:
hibernateGenerated.Adressen -> Adressen
23:41:05,531 INFO [Configuration] configuring from resource: /
hibernate.cfg.xml
23:41:05,531 INFO [Configuration] Configuration resource: /
hibernate.cfg.xml
23:41:05,546 INFO [Configuration] Configured SessionFactory: null
23:41:05,656 INFO [DriverManagerConnectionProvider] Using Hibernate
built-in connection pool (not f
or production use!)
23:41:05,656 INFO [DriverManagerConnectionProvider] Hibernate
connection pool size: 20
23:41:05,656 INFO [DriverManagerConnectionProvider] autocommit mode:
false
23:41:05,656 INFO [DriverManagerConnectionProvider] using driver:
org.gjt.mm.mysql.Driver at URL: j
dbc:mysql://localhost/eshop
23:41:05,656 INFO [DriverManagerConnectionProvider] connection
properties: {driver_jar=mysql-connec
tor-java-5.0.6-bin.jar, user=user, password= }
23:41:05,656 WARN [SettingsFactory] Could not obtain connection
metadata
java.sql.SQLException: No suitable driver found for jdbc:mysql://
localhost/eshop
     at java.sql.DriverManager.getConnection(Unknown Source)
     at java.sql.DriverManager.getConnection(Unknown Source)
     at
org.hibernate.connection.DriverManagerConnectionProvider.getConnection(DriverManagerConnectionPr
ovider.java:110)
     at
org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:
84)
     at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:
2009)
     at
org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:
1292)
     at sample.RegisterAciton.writeInDatabase(RegisterAciton.java:147)
     at sample.RegisterAciton.execute(RegisterAciton.java:246)
     at
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:
484)
     at
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:
274)
     at org.apache.struts.action.ActionServlet.process(ActionServlet.java:
1482)
     at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:
525)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
     at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:
290
     at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:
206)
     at
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:
96)
     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:
230)
     at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:
175)
     at
org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:
179)
     at
org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:
84)
     at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:
128)
     at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:
104)
     at
org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:
157)
     at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:
109)
     at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:
241)
     at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:
844)
     at org.apache.coyote.http11.Http11Protocol
$Http11ConnectionHandler.process(Http11Protocol.java:580)
     at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:
447)
     at java.lang.Thread.run(Unknown Source)
23:41:06,046 INFO [Dialect] Using dialect:
org.hibernate.dialect.MySQLInnoDBDialect
23:41:06,046 INFO [TransactionFactoryFactory] Using default
transaction strategy (direct JDBC trans
actions)
23:41:06,046 INFO [TransactionManagerLookupFactory] No
TransactionManagerLookup configured (in JTA
environment, use of read-write or transactional second-level cache is
not recommended)
23:41:06,046 INFO [SettingsFactory] Automatic flush during
beforeCompletion(): disabled
23:41:06,046 INFO [SettingsFactory] Automatic session close at end of
transaction: disabled
23:41:06,046 INFO [SettingsFactory] Scrollable result sets: disabled
23:41:06,062 INFO [SettingsFactory] JDBC3 getGeneratedKeys():
disabled
23:41:06,062 INFO [SettingsFactory] Connection release mode: auto
23:41:06,062 INFO [SettingsFactory] Maximum outer join fetch depth: 2
23:41:06,062 INFO [SettingsFactory] Default batch fetch size: 1
23:41:06,062 INFO [SettingsFactory] Generate SQL with comments:
disabled
23:41:06,062 INFO [SettingsFactory] Order SQL updates by primary key:
disabled
23:41:06,062 INFO [SettingsFactory] Order SQL inserts for batching:
disabled
23:41:06,062 INFO [SettingsFactory] Query translator:
org.hibernate.hql.ast.ASTQueryTranslatorFacto
ry
23:41:06,062 INFO [ASTQueryTranslatorFactory] Using
ASTQueryTranslatorFactory
23:41:06,062 INFO [SettingsFactory] Query language substitutions: {}
23:41:06,062 INFO [SettingsFactory] JPA-QL strict compliance:
disabled
23:41:06,062 INFO [SettingsFactory] Second-level cache: enabled
23:41:06,062 INFO [SettingsFactory] Query cache: disabled
23:41:06,062 INFO [SettingsFactory] Cache provider:
org.hibernate.cache.NoCacheProvider
23:41:06,062 INFO [SettingsFactory] Optimize cache for minimal puts:
disabled
23:41:06,062 INFO [SettingsFactory] Structured second-level cache
entries: disabled
23:41:06,078 INFO [SettingsFactory] Statistics: disabled
23:41:06,078 INFO [SettingsFactory] Deleted entity synthetic
identifier rollback: disabled
23:41:06,078 INFO [SettingsFactory] Default entity-mode: pojo
23:41:06,078 INFO [SettingsFactory] Named query checking : enabled
23:41:06,125 INFO [SessionFactoryImpl] building session factory
23:41:06,437 INFO [SessionFactoryObjectFactory] Not binding factory
to JNDI, no JNDI name configure
d
23:41:06,515 WARN [JDBCExceptionReporter] SQL Error: 0, SQLState:
08001
23:41:06,515 ERROR [JDBCExceptionReporter] No suitable driver found
for jdbc:mysql://localhost/eshop
23:41:06,515 INFO [SessionFactoryImpl] closing
23:41:06,515 INFO [DriverManagerConnectionProvider] cleaning up
connection pool: jdbc:mysql://local
host/eshop
Can anybody tell me, what I'm doing wrong?

Answer 1

ClassNotFoundException means the driver isn't loaded. "No suitable driver" usually tells me that the syntax in the connection URL is incorrect for some reason.
Make sure you have an up to date driver JAR:
http://www.mysql.com/products/connector/j/
The driver class name should be com.mysql.jdbc.Driver
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