HibernateException: Couldn't obtain transaction-synchronized Session for current thread

Question

I\'m getting the following exception when trying to use my @Service annotated classes:

org.hibernate.HibernateException: Could not obtain transa         


        

Answer 1

One

You must use @Transactional for @Service and @Repository. It lets Spring apply and create proxies with Transaction support.

In your code your @Service class has no the @Transacional either in class level or method level

Second

Where is the class that implements WebApplicationInitializer? I see you are extending a class.. Anyway My Point is, where is something like the following:

@Override
public void onStartup(ServletContext container) {
    // Create the 'root' Spring application context
    AnnotationConfigWebApplicationContext rootContext = new AnnotationConfigWebApplicationContext();
    rootContext.register(CentralServerConfigurationEntryPoint.class);

    // Manage the lifecycle of the root application context
    container.addListener(new ContextLoaderListener(rootContext));

    // Create the dispatcher servlet's Spring application context
    AnnotationConfigWebApplicationContext dispatcherServlet = new AnnotationConfigWebApplicationContext();
    dispatcherServlet.register(CentralWebConfigurationEntryPoint.class);

    // Register and map the dispatcher servlet
    ServletRegistration.Dynamic dispatcher = container.addServlet("dispatcher", new DispatcherServlet(dispatcherServlet));
    dispatcher.setLoadOnStartup(1);
    dispatcher.addMapping("/");

}

Where CentralServerConfigurationEntryPoint.class must only scan components that must work in the server side (@Service, @Repository, @Configuration for Transaction, Hibernate, DataSource etc)

Where CentralWebConfigurationEntryPoint must only scan components that must work in the client/web side (@Controller, @Configuration for Formatters, Tiles, Converters etc)

I dont understand your code about

@Override
protected WebApplicationContext createRootApplicationContext() {
    AnnotationConfigWebApplicationContext rootContext = new AnnotationConfigWebApplicationContext();

    ConfigurableEnvironment environment = rootContext.getEnvironment();
    environment.setDefaultProfiles("production");

    PropertyUtil propertyUtil = PropertyUtil.getInstance(environment.getActiveProfiles());
    String[] basePackages = propertyUtil.getPropertySplitTrimmed("webapp", "basePackages");
    rootContext.scan(basePackages);

    return rootContext;
}

@Override
protected WebApplicationContext createServletApplicationContext() {
    return new AnnotationConfigWebApplicationContext();
}

My point is: you must have two AnnotationConfigWebApplicationContext one for the server and web side.