spring 4 struts 1.x mixing xml and java config - spring

Question

I am not very familiar with spring, so added everything related to spring.
I have a spring 4 struts 1.x application.
Spring context is loaded using struts plugin which points to spring-context.xml
<plug-in className="org.springframework.web.struts.ContextLoaderPlugIn">
<set-property property="contextConfigLocation"
value="/WEB-INF/spring-context.xml"/>
</plug-in>
In spring-context.xml I have configured Jpa's EntityManager like so:
<context:component-scan base-package="com.epam.testsystem" />
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalEntityManagerFactoryBean">
<property name="persistenceUnitName" value="primary"/>
</bean>
<!-- Transactions -->
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>
I also have Spring Security integrated using
public class SecurityWebApplicationInitializer
extends AbstractSecurityWebApplicationInitializer {
public SecurityWebApplicationInitializer() {
super(SecurityConfig.class);
}
}
and
#Configuration
#EnableWebSecurity
#EnableGlobalMethodSecurity(securedEnabled = true)
#ImportResource("/WEB-INF/spring-context.xml")
public class SecurityConfig extends WebSecurityConfigurerAdapter {
#Autowired
private UserDetailsService userDetailsService;
#Override
public void configure(AuthenticationManagerBuilder auth) throws Exception {
auth.userDetailsService(userDetailsService);
}
#Override
public void configure(HttpSecurity http) throws Exception {
http
.authorizeRequests()
.antMatchers("/welcome.do").hasRole("ADMIN")
.and()
.formLogin()
.loginPage("/login.do")
.loginProcessingUrl("/login")
.failureUrl("/login?error=1")
.permitAll()
.and()
.csrf();
}
#Bean
#Override
public AuthenticationManager authenticationManagerBean() throws Exception {
return super.authenticationManagerBean();
}
}
AND IT WORKS WITHOUT ERRORS.
Now I decided to move the configuration of EntityManager to java Config. So I deleted bean definitions from spring-context.xml added those beans to SecurityConfig
#Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
LocalContainerEntityManagerFactoryBean em = new LocalContainerEntityManagerFactoryBean();
em.setPersistenceUnitName("primary");
return em;
}
#Bean
public PlatformTransactionManager transactionManager(EntityManagerFactory emf){
JpaTransactionManager transactionManager = new JpaTransactionManager();
transactionManager.setEntityManagerFactory(emf);
return transactionManager;
}
But now I get this Exception:
Caused by: org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'entityManagerFactory': Requested bean is currently in creation: Is there an unresolvable circular reference?"
I think that happened because I use #PersistenceContext annotation in UserDaoImpl, before I imported it into Java Config.
So what is the most clean way to handle this?
Thanks

Answer 1

One of the proposed solution is
#Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
LocalContainerEntityManagerFactoryBean em = new LocalContainerEntityManagerFactoryBean();
em.setPersistenceUnitName("primary");
return em;
}
#Bean
public PlatformTransactionManager transactionManager(){
JpaTransactionManager transactionManager = new JpaTransactionManager();
// SOlution below
transactionManager.setEntityManagerFactory(entityManagerFactory());
return transactionManager;
}
Here we pass the dependent bean via entityManagerFactory()
Kindly let me know if this fulfills the solution

Answer 2

I made it work by creating a separate PersistenceConfig
#Configuration
#EnableTransactionManagement
#EnableJpaRepositories(basePackages="com.epam.testsystem.repository")
public class PersistenceConfig {
#Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
LocalContainerEntityManagerFactoryBean em = new LocalContainerEntityManagerFactoryBean();
JpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
em.setJpaVendorAdapter(vendorAdapter);
em.setPersistenceUnitName("primary");
return em;
}
#Bean
public PlatformTransactionManager transactionManager(EntityManagerFactory emf){
JpaTransactionManager transactionManager = new JpaTransactionManager();
transactionManager.setEntityManagerFactory(emf);
return transactionManager;
}
}
and import Java Config to xml config (spring-context.xml):
<bean class="com.epam.testsystem.config.PersistenceConfig" />