Spring 5 open session in view - spring

Question

I'm trying to implement the OpenSessionInView pattern (antipattern) with Spring 5. I configured via Java (not xml) the OpenSessionInView in my WebMvcConfigurer, and watching the logs it seems that is already running. But when I try to load a lazy collection it says the known "Could not write JSON: failed to lazily initialize a collection of role:..."
The crazy stuff is that I see in my logs:
DEBUG [http-nio-8080-exec-7] (OpenSessionInViewInterceptor.java:128) - Opening Hibernate Session in OpenSessionInViewInterceptor
DEBUG [http-nio-8080-exec-7] (AbstractPlatformTransactionManager.java:370) - Creating new transaction with name [org.springframework.data.jpa.repository.support.SimpleJpaRepository.findById]: PROPAGATION_REQUIRED,ISOLATION_DEFAULT,readOnly
DEBUG [http-nio-8080-exec-7] (JpaTransactionManager.java:393) - Opened new EntityManager [SessionImpl(1867707287<open>)] for JPA transaction
DEBUG [http-nio-8080-exec-7] (DriverManagerDataSource.java:144) - Creating new JDBC DriverManager Connection to [jdbc:mysql://MYIP:3306/DB_NAME?useUnicode=true&useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=Europe/Madrid]
DEBUG [http-nio-8080-exec-7] (DataSourceUtils.java:186) - Setting JDBC Connection [com.mysql.cj.jdbc.ConnectionImpl#2e6ff9ac] read-only
DEBUG [http-nio-8080-exec-7] (TransactionImpl.java:56) - On TransactionImpl creation, JpaCompliance#isJpaTransactionComplianceEnabled == false
...
...
...
WARN [http-nio-8080-exec-7] (AbstractHandlerExceptionResolver.java:199) - Resolved [org.springframework.http.converter.HttpMessageNotWritableException: Could not write JSON: failed to lazily initialize a collection of role: com....Route.styles, could not initialize proxy - no Session; nested exception is com.fasterxml.jackson.databind.JsonMappingException: failed to lazily initialize a collection of role...
DEBUG [http-nio-8080-exec-7] (OpenSessionInViewInterceptor.java:153) - Closing Hibernate Session in OpenSessionInViewInterceptor
So, it seems that the session is opened as it should, is not closed when the exception is thrown. But my EntityManager is not using that session... Am I correct? How can I achieve that?
Thanks!
EDIT:
My WebConfig.java:
#Configuration
#ComponentScan
#EnableWebMvc
public class WebConfig implements WebMvcConfigurer {
#Value( "${resources.files.location}" )
private String fileLocation;
#Autowired
DataSource datasource;
#Autowired
private Environment env;
#Bean
public ResourceBundleMessageSource messageSource() {
ResourceBundleMessageSource messageSource = new ResourceBundleMessageSource();
messageSource.setBasename("Messages");
messageSource.setCacheMillis(10);
return messageSource;
}
#Bean
public LocaleResolver localeResolver() {
SessionLocaleResolver localeResolver = new SessionLocaleResolver();
localeResolver.setDefaultLocale(Locale.getDefault());
return localeResolver;
}
#Bean
public LocaleChangeInterceptor localeChangeInterceptor() {
LocaleChangeInterceptor localeInterceptor = new LocaleChangeInterceptor();
localeInterceptor.setIgnoreInvalidLocale(true);
localeInterceptor.setParamName("idioma");
return localeInterceptor;
}
#Bean
public PlatformTransactionManager hibernateTransactionManager() {
HibernateTransactionManager transactionManager
= new HibernateTransactionManager();
transactionManager.setSessionFactory(sessionFactoryBean().getObject());
return transactionManager;
}
#Bean
public ViewResolver internalResourceViewResolver() {
InternalResourceViewResolver internalResourceViewResolver = new InternalResourceViewResolver();
internalResourceViewResolver.setPrefix("/WEB-INF/views/");
internalResourceViewResolver.setSuffix(".jsp");
return internalResourceViewResolver;
}
public void addInterceptors(InterceptorRegistry registry) {
OpenSessionInViewInterceptor openSessionInViewInterceptor = new OpenSessionInViewInterceptor();
openSessionInViewInterceptor.setSessionFactory(sessionFactoryBean().getObject());
registry.addWebRequestInterceptor(openSessionInViewInterceptor).addPathPatterns("/**");
registry.addInterceptor(new miLoggerInterceptor());
registry.addInterceptor(localeChangeInterceptor());
}
#Bean
public FilterRegistrationBean openEntityManagerInViewFilter() {
FilterRegistrationBean reg = new FilterRegistrationBean();
reg.setName("OpenEntityManagerInViewFilter");
reg.setFilter(new OpenEntityManagerInViewFilter());
return reg;
}
#Bean
public LocalSessionFactoryBean sessionFactoryBean() {
LocalSessionFactoryBean sessionFactory = new LocalSessionFactoryBean();
sessionFactory.setDataSource(datasource);
sessionFactory.setPackagesToScan("my.package");
sessionFactory.setHibernateProperties(hibernateProperties());
return sessionFactory;
}
private Properties hibernateProperties() {
Properties jpaProperties = new Properties();
jpaProperties.put("hibernate.hbm2ddl.auto", env.getProperty("hibernate.hbm2ddl.auto"));
jpaProperties.put("hibernate.show_sql", env.getProperty("hibernate.show_sql"));
jpaProperties.put("hibernate.format_sql", env.getProperty("hibernate.format_sql"));
return jpaProperties;
}
public void addResourceHandlers(final ResourceHandlerRegistry registry) {
registry.addResourceHandler("/js/**").addResourceLocations("/js/");
registry.addResourceHandler("/css/**").addResourceLocations("/css/");
registry.addResourceHandler("/img/**").addResourceLocations("/img/");
registry.addResourceHandler("/.well-known/acme-challenge/**").addResourceLocations("/.well-known/acme-challenge/");
registry.addResourceHandler("/webfonts/**").addResourceLocations("/webfonts/");
registry.addResourceHandler("/multimedia/").addResourceLocations("file:"+fileLocation);
registry.addResourceHandler("swagger-ui.html").addResourceLocations("classpath:/META-INF/resources/");
registry.addResourceHandler("/webjars/**").addResourceLocations("classpath:/META-INF/resources/webjars/");
registry.addResourceHandler("/files/**").addResourceLocations("file:///C:/tmp/images/");
registry.addResourceHandler("/favico.ico").addResourceLocations("/favico.ico");
}
}
BusinessConfig.java:
#Configuration
#ComponentScan
#PropertySources({
#PropertySource("classpath:application.properties"),
})
#EnableJpaRepositories("com.muskers.web.business.repositories")
public class BusinessConfig {
#Autowired
private Environment env;
#Bean
public DataSource dataSource() {
DriverManagerDataSource dataSource = new DriverManagerDataSource();
dataSource.setDriverClassName(env.getProperty("db.driver"));
dataSource.setUrl(env.getProperty("db.url"));
dataSource.setUsername(env.getProperty("db.username"));
dataSource.setPassword(env.getProperty("db.password"));
return dataSource;
}
#Bean
public PasswordEncoder delegatingPasswordEncoder() {
PasswordEncoder defaultEncoder = PasswordEncoderFactories.createDelegatingPasswordEncoder();
Map<String, PasswordEncoder> encoders = new HashMap<>();
encoders.put("bcrypt", new BCryptPasswordEncoder());
encoders.put("scrypt", new SCryptPasswordEncoder());
encoders.put("pbkdf2", new Pbkdf2PasswordEncoder());
DelegatingPasswordEncoder passwordEncoder = new DelegatingPasswordEncoder(
"bcrypt", encoders);
passwordEncoder.setDefaultPasswordEncoderForMatches(defaultEncoder);
return passwordEncoder;
}
#Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
LocalContainerEntityManagerFactoryBean emf = new LocalContainerEntityManagerFactoryBean();
emf.setDataSource(dataSource());
emf.setPackagesToScan(User.class.getPackage().getName());
HibernateJpaVendorAdapter hibernateJpa = new HibernateJpaVendorAdapter();
hibernateJpa.setDatabase(Database.MYSQL);
hibernateJpa.setDatabasePlatform(env.getProperty("hibernate.dialect"));
hibernateJpa.setGenerateDdl(env.getProperty("hibernate.generateDdl", Boolean.class));
hibernateJpa.setShowSql(env.getProperty("hibernate.show_sql", Boolean.class));
emf.setJpaVendorAdapter(hibernateJpa);
Properties jpaProperties = new Properties();
jpaProperties.put("hibernate.hbm2ddl.auto", env.getProperty("hibernate.hbm2ddl.auto"));
jpaProperties.put("hibernate.show_sql", env.getProperty("hibernate.show_sql"));
jpaProperties.put("hibernate.format_sql", env.getProperty("hibernate.format_sql"));
emf.setJpaProperties(jpaProperties);
return emf;
}
#Bean
public JpaTransactionManager transactionManager() {
JpaTransactionManager txnMgr = new JpaTransactionManager();
txnMgr.setEntityManagerFactory(entityManagerFactory().getObject());
return txnMgr;
}
#PostConstruct
public void setTimeZone() {
TimeZone.setDefault(TimeZone.getTimeZone("Europe/Madrid"));
}
public class Roles {
public final static String ROLE_USER = "USER";
public final static String ROLE_ADMIN = "ADMIN";
}
public class Authorities {
public final static String MANAGE_GYMS = "MANAGE_GYMS";
public final static String MANAGE_USERS = "MANAGE_USERS";
public final static String READ_GYMS = "READ_GYMS";
public final static String CREATE_GYMS = "CREATE_GYMS";
public final static String CREATE_ROUTES = "CREATE_ROUTES";
public final static String READ_ROUTES = "READ_ROUTES";
public final static String MANAGE_ROUTES = "MANAGE_ROUTES";
}
}
App.java:
public class App extends AbstractAnnotationConfigDispatcherServletInitializer
{
#Override
protected Class<?>[] getRootConfigClasses() {
return new Class<?>[] { BusinessConfig.class, WebSecurityConfig.class };
}
#Override
protected Class<?>[] getServletConfigClasses() {
return new Class<?>[] { WebConfig.class };
}
#Override
protected String[] getServletMappings() {
return new String[] { "/" };
}
#Override
protected Filter[] getServletFilters() {
CharacterEncodingFilter characterEncodingFilter = new CharacterEncodingFilter();
characterEncodingFilter.setEncoding("UTF-8");
return new Filter[] { characterEncodingFilter};
}
}