Using openEntityManagerInView still getting "failed to lazily initialize a collection of role"

Question

I am trying to return one of my entities to a JSP page but getting the following error "failed to lazily initialize a collection of role". I have added the openEntityManagerInView filter(assuming it would allow the entity manager to stay open in the view?) but still getting this error.

My application is configured using java config no xml.

Below is my dispatcher servelet. You can see i have added the openEntityManagerInView filter.

Any ideas why this is? I have checked similar questions on stackoverflow and have had no luck to the solutions provided.

public class DispatcherServletInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {

@Override
public void onStartup(ServletContext servletContext) throws ServletException {

    registerOpenEntityManagerInViewFilter(servletContext);
    super.onStartup(servletContext);

}

private void registerOpenEntityManagerInViewFilter(ServletContext servletContext) {
    OpenEntityManagerInViewFilter viewFilter = new OpenEntityManagerInViewFilter();
    viewFilter.setEntityManagerFactoryBeanName("entityManagerFactory");
    FilterRegistration.Dynamic registration = servletContext.addFilter("openEntityManagerInView",
            new OpenEntityManagerInViewFilter());
    registration.addMappingForUrlPatterns(null, false, "/*");

}

@Override
protected Class<?>[] getRootConfigClasses() {
    return new Class<?>[]{Config.class, SecurityConfig.class};
}

@Override
protected Class<?>[] getServletConfigClasses() {
    return new Class<?>[]{WebConfig.class};
}

@Override
protected String[] getServletMappings() {
    return new String[]{"/"};
}

}

Below is the entity in question. I've omitted the getters and setters.

@Entity
@Table(name = "film")
public class Film {

@Id
@GeneratedValue
@Column(name = "film_id")
private int filmId;
@Column(name = "title")
private String title;
@Column(name = "description")
private String description;
@Column(name = "release_year")
private int releaseYear;
@ManyToOne
@JoinColumn(name = "language_id")
private Language language;
@ManyToOne
@JoinColumn(name = "original_language_id")
private Language originalLanguage;
@Column(name = "rental_duration")
private int rentalDuration;
@Column(name = "rental_rate")
private double rentalRate;
@Column(name = "length")
private int length;
@Column(name = " replacement_cost")
private double replacementCost;
@Column(name = "rating")
private String rating;
@Column(name = "special_features")
private String specialFeatures;
@Temporal(TemporalType.TIMESTAMP)
@Column(name = "last_update")
private Date lastUpdate;
@OneToMany(mappedBy = "film", cascade = CascadeType.ALL)
private List<Inventory> inventories;

.........
}

Below is my config for my JPA stuff.

@Configuration
@EnableTransactionManagement
public class Config {

@Bean(name = "entityManagerFactory")
public EntityManagerFactory entityManagerFactory() {
    LocalContainerEntityManagerFactoryBean emf = new LocalContainerEntityManagerFactoryBean();
    HibernateJpaVendorAdapter hibernateJpaVendorAdapter = new HibernateJpaVendorAdapter();
    HibernateJpaDialect hibernateJpaDialect = new HibernateJpaDialect();
    emf.setDataSource(dataSource());
    emf.setPackagesToScan("com");
    emf.setJpaDialect(hibernateJpaDialect);
    emf.setJpaVendorAdapter(hibernateJpaVendorAdapter);
    /* Map<String,String> props = new HashMap<>();
     props.put("hibernate.show_sql", "true");
     emf.setJpaPropertyMap(props);*/
    emf.afterPropertiesSet();
    return emf.getObject();
}

@Bean(name = "transactionManager")
public PlatformTransactionManager transactionManager() throws IOException {
    JpaTransactionManager jtm
            = new JpaTransactionManager();
    jtm.setEntityManagerFactory(entityManagerFactory());
    jtm.setDataSource(dataSource());
    return jtm;
}

@Bean(name = "dataSource")
public DriverManagerDataSource dataSource() {
    DriverManagerDataSource dds = new DriverManagerDataSource();
    dds.setDriverClassName("com.mysql.jdbc.Driver");
    dds.setUrl("jdbc:mysql://localhost/test");
    dds.setUsername("username");
    dds.setPassword("password");
    return dds;
}

}

Below is my web config

@Configuration
@EnableWebMvc
@ComponentScan("com")
public class WebConfig {

@Bean
public ViewResolver viewResolver() {
    InternalResourceViewResolver vr = new InternalResourceViewResolver();
    vr.setViewClass(JstlView.class);
    vr.setPrefix("/WEB-INF/jsp/");
    vr.setSuffix(".jsp");
    vr.setExposeContextBeansAsAttributes(true);
    return vr;
}

}

Below is my security config.

@Configuration
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {

@Autowired
public void configureAuthenticationManagerBuilder(AuthenticationManagerBuilder auth) throws Exception {
    auth
            .inMemoryAuthentication()
            .withUser("user").password("password").roles("USER");
}

@Override
protected void configure(HttpSecurity http) throws Exception {
      http.authorizeRequests()
     .antMatchers("/**").access("hasRole('ROLE_USER')")
     .and().formLogin().loginPage("/login")
     .usernameParameter("username")
     .passwordParameter("password")
     .defaultSuccessUrl("/index", true).failureUrl("/login?error")
     .loginProcessingUrl("/j_spring_security_check");

}

@Override
public void configure(WebSecurity web) throws Exception {
    web.ignoring().antMatchers("/login");
}

}

My Dao class below.

@Repository
public class FilmDao {

    @PersistenceContext
    private EntityManager em;

    public Film getFilm(int filmId) {
        Film film = em.find(Film.class, filmId);
        return film;
    }

}

下面的服务类由我的控制器调用.

@Service
public class FilmService {

    @Autowired
    private FilmDao filmDao;

   @Transactional
    public Film getFilm(int filmId) {
        Film film = filmDao.getFilm(filmId);
        return film;
    }

}

下面的堆栈跟踪.

14:48:30,416 ERROR [io.undertow.request] (default task-6) UT005023: Exception handling request to /test-app/WEB-INF/jsp/update_inventory.jsp: org.apache.jasper.JasperException: org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: com.jm.sakila.entity.Film.inventories, could not initialize proxy - no Session
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:410) [jastow-1.0.0.Final.jar:1.0.0.Final]
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:326) [jastow-1.0.0.Final.jar:1.0.0.Final]
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:259) [jastow-1.0.0.Final.jar:1.0.0.Final]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) [jboss-servlet-api_3.1_spec-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
    at io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:82) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
    at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:61) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
    at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) [undertow-core-1.1.0.Final.jar:1.1.0.Final]
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) [undertow-core-1.1.0.Final.jar:1.1.0.Final]
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) [undertow-core-1.1.0.Final.jar:1.1.0.Final]
    at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:249) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
    at io.undertow.servlet.handlers.ServletInitialHandler.dispatchToPath(ServletInitialHandler.java:192) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
    at io.undertow.servlet.spec.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:160) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
    at org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:168) [spring-webmvc-4.2.2.RELEASE.jar:4.2.2.RELEASE]
    at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:303) [spring-webmvc-4.2.2.RELEASE.jar:4.2.2.RELEASE]
    at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1244) [spring-webmvc-4.2.2.RELEASE.jar:4.2.2.RELEASE]
    at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1027) [spring-webmvc-4.2.2.RELEASE.jar:4.2.2.RELEASE]
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:971) [spring-webmvc-4.2.2.RELEASE.jar:4.2.2.RELEASE]
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893) [spring-webmvc-4.2.2.RELEASE.jar:4.2.2.RELEASE]
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970) [spring-webmvc-4.2.2.RELEASE.jar:4.2.2.RELEASE]
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872) [spring-webmvc-4.2.2.RELEASE.jar:4.2.2.RELEASE]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:707) [jboss-servlet-api_3.1_spec-1.0.0.Final.jar:1.0.0.Final]
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) [spring-webmvc-4.2.2.RELEASE.jar:4.2.2.RELEASE]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) [jboss-servlet-api_3.1_spec-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
    at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:130) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
    at org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter.doFilterInternal(OpenEntityManagerInViewFilter.java:178) [spring-orm-4.2.2.RELEASE.jar:4.2.2.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-4.2.2.RELEASE.jar:4.2.2.RELEASE]
    at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:60) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
    at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:132) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330) [spring-security-web-3.2.9.RELEASE.jar:3.2.9.RELEASE]
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118) [spring-security-web-3.2.9.RELEASE.jar:3.2.9.RELEASE]
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84) [spring-security-web-3.2.9.RELEASE.jar:3.2.9.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.9.RELEASE.jar:3.2.9.RELEASE]
    at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113) [spring-security-web-3.2.9.RELEASE.jar:3.2.9.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.9.RELEASE.jar:3.2.9.RELEASE]
    at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:103) [spring-security-web-3.2.9.RELEASE.jar:3.2.9.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.9.RELEASE.jar:3.2.9.RELEASE]
    at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113) [spring-security-web-3.2.9.RELEASE.jar:3.2.9.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.9.RELEASE.jar:3.2.9.RELEASE]
    at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:154) [spring-security-web-3.2.9.RELEASE.jar:3.2.9.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.9.RELEASE.jar:3.2.9.RELEASE]
    at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45) [spring-security-web-3.2.9.RELEASE.jar:3.2.9.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.9.RELEASE.jar:3.2.9.RELEASE]
    at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:110) [spring-security-web-3.2.9.RELEASE.jar:3.2.9.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.9.RELEASE.jar:3.2.9.RELEASE]
    at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:57) [spring-security-web-3.2.9.RELEASE.jar:3.2.9.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-4.2.2.RELEASE.jar:4.2.2.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.9.RELEASE.jar:3.2.9.RELEASE]
    at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87) [spring-security-web-3.2.9.RELEASE.jar:3.2.9.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.9.RELEASE.jar:3.2.9.RELEASE]
    at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:50) [spring-security-web-3.2.9.RELEASE.jar:3.2.9.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-4.2.2.RELEASE.jar:4.2.2.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.9.RELEASE.jar:3.2.9.RELEASE]
    at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192) [spring-security-web-3.2.9.RELEASE.jar:3.2.9.RELEASE]
    at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160) [spring-security-web-3.2.9.RELEASE.jar:3.2.9.RELEASE]
    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346) [spring-web-4.2.2.RELEASE.jar:4.2.2.RELEASE]
    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:262) [spring-web-4.2.2.RELEASE.jar:4.2.2.RELEASE]
    at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:60) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
    at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:132) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
    at io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:85) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
    at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:61) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
    at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
    at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) [undertow-core-1.1.0.Final.jar:1.1.0.Final]
    at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
    at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:56) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) [undertow-core-1.1.0.Final.jar:1.1.0.Final]
    at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:45) [undertow-core-1.1.0.Final.jar:1.1.0.Final]
    at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:63) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
    at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:58) [undertow-core-1.1.0.Final.jar:1.1.0.Final]
    at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:70) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
    at io.undertow.security.handlers.SecurityInitialHandler.handleRequest(SecurityInitialHandler.java:76) [undertow-core-1.1.0.Final.jar:1.1.0.Final]
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) [undertow-core-1.1.0.Final.jar:1.1.0.Final]
    at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) [undertow-core-1.1.0.Final.jar:1.1.0.Final]
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) [undertow-core-1.1.0.Final.jar:1.1.0.Final]
    at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:261) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
    at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:247) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
    at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:76) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
    at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:166) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
    at io.undertow.server.Connectors.executeRootHandler(Connectors.java:197) [undertow-core-1.1.0.Final.jar:1.1.0.Final]
    at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:759) [undertow-core-1.1.0.Final.jar:1.1.0.Final]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_45]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_45]
    at java.lang.Thread.run(Thread.java:744) [rt.jar:1.7.0_45]
Caused by: org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: com.jm.sakila.entity.Film.inventories, could not initialize proxy - no Session
    at org.hibernate.collection.internal.AbstractPersistentCollection.throwLazyInitializationException(AbstractPersistentCollection.java:576) [hibernate-core-4.3.11.Final.jar:4.3.11.Final]
    at org.hibernate.collection.internal.AbstractPersistentCollection.withTemporarySessionIfNeeded(AbstractPersistentCollection.java:215) [hibernate-core-4.3.11.Final.jar:4.3.11.Final]
    at org.hibernate.collection.internal.AbstractPersistentCollection.initialize(AbstractPersistentCollection.java:555) [hibernate-core-4.3.11.Final.jar:4.3.11.Final]
    at org.hibernate.collection.internal.AbstractPersistentCollection.read(AbstractPersistentCollection.java:143) [hibernate-core-4.3.11.Final.jar:4.3.11.Final]
    at org.hibernate.collection.internal.PersistentBag.iterator(PersistentBag.java:294) [hibernate-core-4.3.11.Final.jar:4.3.11.Final]
    at org.apache.taglibs.standard.tag.common.core.ForEachSupport.toIterator(ForEachSupport.java:72) [jboss-jstl-api_1.2_spec-1.1.2.Final.jar:1.1.2.Final]
    at org.apache.taglibs.standard.tag.common.core.ForEachSupport.prepare(ForEachSupport.java:66) [jboss-jstl-api_1.2_spec-1.1.2.Final.jar:1.1.2.Final]
    at javax.servlet.jsp.jstl.core.LoopTagSupport.doStartTag(LoopTagSupport.java:241) [jboss-jstl-api_1.2_spec-1.1.2.Final.jar:1.1.2.Final]
    at org.apache.jsp.WEB_002dINF.jsp.update_005finventory_jsp._jspx_meth_c_005fforEach_005f1(update_005finventory_jsp.java:231)
    at org.apache.jsp.WEB_002dINF.jsp.update_005finventory_jsp._jspx_meth_c_005fif_005f1(update_005finventory_jsp.java:194)
    at org.apache.jsp.WEB_002dINF.jsp.update_005finventory_jsp._jspService(update_005finventory_jsp.java:83)
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:69) [jastow-1.0.0.Final.jar:1.0.0.Final]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) [jboss-servlet-api_3.1_spec-1.0.0.Final.jar:1.0.0.Final]
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:366) [jastow-1.0.0.Final.jar:1.0.0.Final]
    ... 86 more

谢谢.

Answer 1

事务在 JSP 呈现之前完成，因此 Hibernate Session 不再可用于延迟加载所述属性。

替代解决方案（不需要使用 OEMIV 过滤器）：如果您希望在代码中的其他位置保留所述集合属性的延迟加载，请创建一个单独的查找方法来findFilmWithInventories检索实体并执行join fetch查询以立即加载所述实体收藏。