Hibernate/Spring3: could not initialize proxy - no Session

I'm new at Spring, so I put Spring 3.0M3 on a Tomcat server on my Mac, made an Eclipse project, completed a Hello World and then wanted to make an object persist with Hibernate. I've made a User table on my MySQL server, made a User object with all getters and setters (I really wish Java would take a queue from Objective-C here and add dynamic properties. Too much code clutter with generated property-code), made a UserDao object to look up and save a User, and made the bean config. It goes fairly well... except for that the session isn't initialized. Why is this? I can access the database just fine from this computer using those credentials. I realize that this is probably just normal beginner stuff, but all I've found on the error while googling has been people that are loosing the sessions mid-way when transitioning from Hibernate 2 to 3. I'm not transitioning, and as far as I can tell the session is never made. Here's my error: ``` SEVERE: Servlet.service() for servlet HelloApp threw exception org.hibernate.LazyInitializationException: could not initialize proxy - no Session at org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:57) at org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:111) at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:150) at com.saers.data.entities.User$$EnhancerByCGLIB$$c2f16afd.getName(<generated>) at com.saers.view.web.controller.HelloWorldController.handleRequestInternal(HelloWorldController.java:22) at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153) at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:763) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:709) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:613) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:525) at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) 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:293) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454) at java.lang.Thread.run(Thread.java:637) ``` Here is my servlet config for the related beans: ``` <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"> <property name="driverClassName" value="com.mysql.jdbc.Driver" /> <property name="url" value="jdbc:mysql://10.0.0.3:3306/HelloDB" /> <property name="username" value="hello" /> <property name="password" value="w0rld" /> <property name="initialSize" value="2" /> <property name="maxActive" value="5" /> </bean> <bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean"> <property name="dataSource" ref="dataSource"/> <property name="annotatedClasses"> <list> <value>com.saers.data.entities.User</value> </list> </property> <property name="hibernateProperties"> <props> <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop> <prop key="hibernate.show_sql">true</prop> <prop key="hibernate.lazy">false</prop> </props> </property> </bean> <bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager"> <property name="sessionFactory" ref="sessionFactory"/> </bean> <bean id="userDAO" class="com.saers.data.dao.UserDao"> <property name="sessionFactory" ref="sessionFactory"/> </bean> <bean id="txProxyTemplate" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean" abstract="true"> <property name="transactionManager" ref="transactionManager"/> <property name="transactionAttributes"> <props> <prop key="add*">PROPAGATION_REQUIRED</prop> <prop key="update*">PROPAGATION_REQUIRED</prop> <prop key="delete*">PROPAGATION_REQUIRED</prop> <prop key="*">PROPAGATION_SUPPORTS,readOnly</prop> </props> </property> </bean> <bean id="userService" parent="txProxyTemplate"> <property name="target"> <bean class="com.saers.business.UserServiceImpl"> <property name="userDao" ref="userDAO"/> </bean> </property> <property name="proxyInterfaces" value="com.saers.business.UserService"/> </bean> <bean name="/" class="com.saers.view.web.controller.HelloWorldController"> <property name="userService" ref="userService"/> </bean> ``` Here is my User class: ``` package com.saers.data.entities; import java.util.Date; import java.io.Serializable; import javax.persistence.*; @Entity @Table(name = "User") public class User implements Serializable { private static final long serialVersionUID = -6123654414341191669L; @Id @Column(name = "WebUserId") private String WebUserId; @Column(name = "Name") private String Name; /** * @return the webUserId */ public synchronized String getWebUserId() { return WebUserId; } /** * @param webUserId the webUserId to set */ public synchronized void setWebUserId(String webUserId) { WebUserId = webUserId; } /** * @return the name */ public synchronized String getName() { return Name; } /** * @param name the name to set */ public synchronized void setName(String name) { Name = name; } } ``` And here is my UserDao: ``` package com.saers.data.dao; import java.util.List; import com.saers.data.entities.User; import org.springframework.orm.hibernate3.support.*; public class UserDao extends HibernateDaoSupport { public void saveUser(User user) { getHibernateTemplate().saveOrUpdate(user); } public User lookupUser(String WebUserId) { User user = getHibernateTemplate().load(User.class, WebUserId); return user; return user; } } ``` Here's my UserService interface ``` public interface UserService { public User lookupUser(String webUserId); public void setUserDao(UserDao userDao); } ``` and its implementation: ``` public class UserServiceImpl implements UserService { private UserDao userDao; public void setUserDao(UserDao userDao) { this.userDao = userDao; } @Override public User lookupUser(String webUserId) { return userDao.lookupUser(webUserId); } } ``` And finally, here's my HelloWorldController: ``` package com.saers.view.web.controller; import com.saers.data.entities.User; import com.saers.business.UserService; import org.springframework.web.servlet.mvc.*; import org.springframework.web.servlet.*; import javax.servlet.http.*; import org.apache.commons.logging.*; public class HelloWorldController extends AbstractController { protected final Log logger = LogFactory.getLog(getClass()); @Override public ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response) throws Exception { logger.info("Get bean"); User user = userService.lookupUser("helloUser"); logger.info("Found out that this user was last changed " + user.getName()); logger.info("Return View"); ModelAndView mv = new ModelAndView("HelloWorld.jsp", "user", user); return mv; } private UserService userService = null; public void setUserService(UserService userService) { this.userService = userService; } } ``` I hope you have some good tips I can use :-) If there's anything else in the code you feel that I'm doing the wrong/non-spring way, I would love to hear about that as well. Cheers ``` Nik ```