Spring mvc Autowiring fails - spring

TrackerRepoImpl.java
#Repository("TrackerRepo")
public class TrackerRepoImpl implements TrackerRepo { //repository interface implementation
#Autowired
private SessionFactory sessionFactory;
#Override
public Session getCurrentSession() {
return sessionFactory.getCurrentSession();
}
#Override
public void save(Event event) {
getCurrentSession().save(event);
}
}
TrackerServiceImpl.java
#Service("TrackerService")
public class TrackerServiceImpl implements TrackerService { //service interface implementation
#Autowired
private TrackerRepo repo;
#Override
#Transactional
public void save(Event event) {
repo.save(event);
}
}
RootConfig.java
#Configuration
#EnableTransactionManagement
#ComponentScan(basePackages={"com.tracker"},excludeFilters={#Filter(type=FilterType.ANNOTATION,value=EnableWebMvc.class)})
public class RootConfig {
#Bean //session factory bean
public LocalSessionFactoryBean factoryBean(DataSource dataSource)
{
LocalSessionFactoryBean bean=new LocalSessionFactoryBean();
bean.setDataSource(dataSource);
Properties properties=new Properties();
properties.setProperty("dialect", "org.hibernate.dialect.MySQLDialect");
bean.setHibernateProperties(properties);
bean.setPackagesToScan("com.tracker");
return bean;
}
#Bean //datbase details
public DataSource dataSource()
{
DriverManagerDataSource dataSource=new DriverManagerDataSource();
dataSource.setDriverClassName("com.mysql.jdbc.Driver");
dataSource.setUrl("jdbc:mysql://localhost/tracker");
dataSource.setUsername("root");
dataSource.setPassword("root");
return dataSource;
}
#Bean
#Autowired
public HibernateTransactionManager transactionManager(SessionFactory sessionFactory) {
HibernateTransactionManager txManager = new HibernateTransactionManager();
txManager.setSessionFactory(sessionFactory);
return txManager;
}
#Bean
public BeanPostProcessor persistenceTranslation() {
return new PersistenceExceptionTranslationPostProcessor();
}
}
errors:
Jun 29, 2015 1:33:10 AM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [dispatcher] in context with path [/tracker] threw exception [Request processing failed; nested exception is org.hibernate.HibernateException: Could not obtain transaction-synchronized Session for current thread] with root cause
org.hibernate.HibernateException: Could not obtain transaction-synchronized Session for current thread
at org.springframework.orm.hibernate4.SpringSessionContext.currentSession(SpringSessionContext.java:134)
at org.hibernate.internal.SessionFactoryImpl.getCurrentSession(SessionFactoryImpl.java:1014)
at com.tracker.web.dao.TrackerRepoImpl.getCurrentSession(TrackerRepoImpl.java:22)
at com.tracker.web.dao.TrackerRepoImpl.save(TrackerRepoImpl.java:27)
at com.tracker.web.service.TrackerServiceImpl.save(TrackerServiceImpl.java:22)
at com.tracker.web.controllers.MainController.submitPlannedPage(MainController.java:77)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:776)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:705)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:868)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:646)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:503)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:421)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)

Related

Spring OAuth2: Could not obtain transaction-synchronized Session for current thread

I am using the JdbcTokenStore and a hibernate database in parallel, and I am getting the following error when requesting an access token:
sparklr2 09:59:54.292 [DEBUG] ResourceOwnerPasswordTokenGranter - Getting access token for: officialclient
sparklr2 09:59:54.292 [DEBUG] ProviderManager - Authentication attempt using org.springframework.security.authentication.dao.DaoAuthenticationProvider
sparklr2 09:59:54.292 [DEBUG] DefaultAuthenticationEventPublisher - No event was found for the exception org.springframework.security.authentication.InternalAuthenticationServiceException
sparklr2 09:59:54.308 [INFO] TokenEndpoint - Handling error: InternalAuthenticationServiceException, Could not obtain transaction-synchronized Session for current thread
sparklr2 09:59:54.448 [DEBUG] ExceptionTranslationFilter - Chain processed normally
sparklr2 09:59:54.448 [DEBUG] SecurityContextPersistenceFilter - SecurityContextHolder now cleared, as request processing completed
Mär 16, 2016 9:59:54 AM org.apache.catalina.core.StandardWrapperValve invoke
SCHWERWIEGEND: Servlet.service() for servlet [dispatcher] in context with path [/organizer] threw exception [Request processing failed; nested exception is error="access_denied", error_description="Error requesting access token."] with root cause
org.springframework.web.client.HttpClientErrorException: 401 Unauthorized
at org.springframework.web.client.DefaultResponseErrorHandler.handleError(DefaultResponseErrorHandler.java:91)
at org.springframework.security.oauth2.client.token.OAuth2AccessTokenSupport$AccessTokenErrorHandler.handleError(OAuth2AccessTokenSupport.java:244)
at org.springframework.web.client.RestTemplate.handleResponse(RestTemplate.java:641)
at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:597)
at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:565)
at org.springframework.security.oauth2.client.token.OAuth2AccessTokenSupport.retrieveToken(OAuth2AccessTokenSupport.java:137)
at org.springframework.security.oauth2.client.token.grant.password.ResourceOwnerPasswordAccessTokenProvider.obtainAccessToken(ResourceOwnerPasswordAccessTokenProvider.java:47)
at org.springframework.security.oauth2.client.token.AccessTokenProviderChain.obtainNewAccessTokenInternal(AccessTokenProviderChain.java:142)
at org.springframework.security.oauth2.client.token.AccessTokenProviderChain.obtainAccessToken(AccessTokenProviderChain.java:118)
at org.springframework.security.oauth2.client.OAuth2RestTemplate.acquireAccessToken(OAuth2RestTemplate.java:221)
at org.springframework.security.oauth2.client.OAuth2RestTemplate.getAccessToken(OAuth2RestTemplate.java:173)
at my.base.package.controller.OfficialClientController.authenticate(OfficialClientController.java:71)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:817)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:731)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:968)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:870)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:646)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:844)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:207)
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:176)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:262)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:503)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:421)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:314)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
I am requesting the token as follows:
ResourceOwnerPasswordResourceDetails resourceDetails = new ResourceOwnerPasswordResourceDetails();
resourceDetails.setClientAuthenticationScheme(AuthenticationScheme.header);
resourceDetails.setAccessTokenUri(tokenEndpoint);
resourceDetails.setScope(Arrays.asList("read", "write"));
resourceDetails.setId("resource");
resourceDetails.setClientId("officialclient");
resourceDetails.setClientSecret("officialclientsecret");
resourceDetails.setUsername(username);
resourceDetails.setPassword(password);
OAuth2RestTemplate template = new OAuth2RestTemplate(resourceDetails, context);
return template.getAccessToken();
I enabled transaction management using #EnableTransactionManagement on my root configuration:
#Configuration
#EnableWebSecurity
#Import({WebMvcConfig.class, HibernateConfig.class, MethodSecurityConfig.class, OAuth2ServerConfig.class})
#ComponentScan("my.base.package")
#EnableTransactionManagement
public class SecurityConfig extends WebSecurityConfigurerAdapter {
...
}
In HibernateConfig, I added the following code:
#Bean
#Autowired
public HibernateTransactionManager transactionManager(SessionFactory sessionFactory) {
HibernateTransactionManager txManager = new HibernateTransactionManager();
txManager.setSessionFactory(sessionFactory);
return txManager;
}
What am I doing wrong?
Edit
I am using a custom UserDetailsManager with the following loadUserByUsername method:
#Override
public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
Criteria crit = getSession().createCriteria(OrganizerUser.class);
crit.add(Restrictions.eq("username", username));
OrganizerUser user = (OrganizerUser) crit.uniqueResult();
if(user == null) {
trans.rollback();
throw new UsernameNotFoundException("Username not found!");
}
else {
return user;
}
}
I was missing an #Transactional on the custom UserDetailsManager.

Spring EJB remote

I need help to call EJB Remote (EJB project DAO) from dynamic web project (spring). i use a WildFly 8 server
IN EJB project
PersonDaoRemote
#Remote
public interface PersonDaoRemote {
public void addPerson(Person p);
}
PersonDaoImpl
#Stateless #RemoteBinding(jndiBinding="PersonDao")
public class PersonDaoImpl implements PersonDaoLocal,PersonDaoRemote{
#PersistenceContext(unitName="UniQPersistence") private EntityManager em;
#Override public void addPerson(Person p) { em.persist(p);
}
In Web project
Application-context
<bean id="myComponent"
class="org.springframework.ejb.access.LocalStatelessSessionProxyFactoryBean">
<property name="jndiName" value="ejb/PersonDao"/>
<property name="businessInterface" value="com.mycom.MyComponent"/>
</bean>
<bean id="SecurityController" class="com.uniqweb.controller.SecurityController">
<property name="myComponent" ref="myComponent"/>
</bean>
Mycomponent interface
public interface MyComponent {
public void addPerson(Person p);
}
controller
#Controller
public class SecurityController {
private MyComponent myComponent;
public void setMyComponent(MyComponent myComponent) {
this.myComponent = myComponent;
}
#RequestMapping(value = "/addtest",params="submit", method = RequestMethod.POST)
public String test(ModelMap model,#RequestParam(value = "error", required = false) String error,
#RequestParam("username") String logout) {
System.out.println(logout);
Person p=new Person();
p.setId(1);
myComponent.addPerson(p); line66
return "login";
}
}
console
Caused by: java.lang.NullPointerException
at com.uniqweb.controller.SecurityController.login3(SecurityController.java:66) [classes:]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.8.0_45]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) [rt.jar:1.8.0_45]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.8.0_45]
at java.lang.reflect.Method.invoke(Method.java:497) [rt.jar:1.8.0_45]
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221) [spring-web-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137) [spring-web-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110) [spring-webmvc-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:776) [spring-webmvc-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:705) [spring-webmvc-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) [spring-webmvc-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959) [spring-webmvc-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893) [spring-webmvc-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966) [spring-webmvc-4.1.6.RELEASE.jar:4.1.6.RELEASE]
... 30 more
Regrding to the following link:
https://docs.jboss.org/author/display/WFLY8/JNDI+Reference?_sscc=t
Your JNDI name should be like:
ejb:myapp/myejbjar/MyEjbName!com.test.MyRemoteInterface

Spring-MVC does not call repository method

I am fairly new, and trying to make a query on my local database but the code throws a NullPointerException exception.
It is weird as it looks like it never calls the selected method of repository called findNamesByCat(String cat). It does not show the output of System.err.println("in repository"); that is located in this method.
Just after following line I called a method of another service and that works!!
List<Name> Names = myService.findNamesByCat(cat);
Error
Mar 18, 2015 1:29:07 PM
org.apache.catalina.core.StandardWrapperValve invoke
... threw exception [Request processing failed; nested exception is java.lang.NullPointerException] with root cause
java.lang.NullPointerException
at com.myproject.web.MyController.showCategoryNames(MyController.java:41)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:777)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:706)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:943)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:857)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:620)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:504)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:421)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1074)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
Code
#Controller
public class myController {
#Autowired
private MyService myService;
#RequestMapping(value = "/{cat}", method = RequestMethod.GET)
public String showCategoryNames(#PathVariable String cat, Model model) {
System.err.println("in web"); //shows this
List<Name> Names = myService.findNamesByCat(cat);
System.err.println(Names.size()); //this is line 41
model.addAttribute("Names", Names);
model.addAttribute("cat", cat);
return "cat";
}
#Service
public class MyServiceImpl implements MyService {
#Autowired
private NameRepository nameRepository;
#Override
#Transactional(readOnly = true)
public List<Name> findListOfNamesByCat(String cat) {
System.err.println("in service"); //does not show this
return nameRepository.findNamesByCat(cat);
}
}
#Repository
public class NameRepositoryImp implements NameRepository {
#Autowired
SessionFactory sessionFactory;
#Override
public List<Name> findNamesByCat(String cat){
System.err.println("in repository"); //does not show this
try {
Criteria crit = sessionFactory.getCurrentSession().createCriteria(
Name.class);
crit.add(Restrictions.eq("category", cat));
return crit.list();
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
}
Servlet
<context:annotation-config />
<mvc:annotation-driven />
<mvc:resources mapping="/resources/**" location="/resources/" />
<context:component-scan base-package="com.myproject" />
UPDATE
I made following changes as well but it does not work yet.
#Controller
public class myController {
#Autowired
#Qualifier("repositoryService")
private MyService myService;
#Service(value = "repositoryService")
public class MyServiceImpl implements MyService {
#Autowired
#Qualifier("repositoryMain")
private NameRepository nameRepository;
#Repository(value = "repositoryMain")
public class NameRepositoryImpl implements NameRepository {
#Autowired
SessionFactory sessionFactory;
You defined #PathVariable String cat, but didn't mark it correctly in #RequestMapping, add {} for PathVariable "cat", like this:
#RequestMapping(value = "/{cat}", method = RequestMethod.GET)
The issue was that, for some reasons the body of the methods that I was calling were empty and the correct bodies where replaced by body of other methods. After replacing the bodies and cleaning the project it started working. Thank you for your attempt to help and apologies for the confusion.

"No CurrentSessionContext configured" when application try perform a query in the database

In my current spring-boot project, when I try do a query in the database, through this method from my dao class (it's the unique I used in this step of the development):
public class Dao<E extends Model> {
#Autowired
private SessionFactory sessionFactory;
...
#Transactional
public E findByField(String field, String value) {
return (E) sessionFactory.getCurrentSession().createQuery("from "+clazz.getSimpleName()+" where "+field+" = :data").setParameter("data", value).uniqueResult();
}
}
I am getting this error:
org.springframework.security.authentication.InternalAuthenticationServiceException: No CurrentSessionContext configured!
at org.springframework.security.authentication.dao.DaoAuthenticationProvider.retrieveUser(DaoAuthenticationProvider.java:110)
at org.springframework.security.authentication.dao.AbstractUserDetailsAuthenticationProvider.authenticate(AbstractUserDetailsAuthenticationProvider.java:132)
at org.springframework.security.authentication.ProviderManager.authenticate(ProviderManager.java:156)
at org.springframework.security.authentication.ProviderManager.authenticate(ProviderManager.java:177)
at org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter.attemptAuthentication(UsernamePasswordAuthenticationFilter.java:94)
at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:211)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:110)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:57)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:50)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192)
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:503)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:421)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1736)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1695)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.hibernate.HibernateException: No CurrentSessionContext configured!
at org.hibernate.internal.SessionFactoryImpl.getCurrentSession(SessionFactoryImpl.java:1012)
at org.store.generic.persistence.Dao.findByField(Dao.java:47)
at org.store.generic.persistence.Dao$$FastClassBySpringCGLIB$$ac46d9f5.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:708)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:98)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:262)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:95)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:644)
at org.store.model.usuario.UsuarioDao$$EnhancerBySpringCGLIB$$426a101d.findByField(<generated>)
at org.store.security.AcessoService.loadUserByUsername(AcessoService.java:30)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:98)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:262)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:95)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207)
at com.sun.proxy.$Proxy64.loadUserByUsername(Unknown Source)
at org.springframework.security.authentication.dao.DaoAuthenticationProvider.retrieveUser(DaoAuthenticationProvider.java:102)
... 35 common frames omitted
this method is called from this service class:
#Component
public class AcessoService implements UserDetailsService {
#Autowired
private UsuarioDao usuario;
#Override
#Transactional
public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
Usuario account = (Usuario) usuario.findByField("login", username);
if(account==null)
throw new UsernameNotFoundException("No such user: " + username);
else if (account.getRole().isEmpty())
throw new UsernameNotFoundException("User " + username + " has no authorities");
List<Permission> lista = new ArrayList<Permission>();
int max = account.getRole().size();
for(int i=0; i<max; i++) {
int max2 = account.getRole().get(i).getPermission().size();
for(int j=0; j<max2; j++)
lista.add(account.getRole().get(i).getPermission().get(j));
}
boolean accountIsEnabled = true;
boolean accountNonExpired = true;
boolean credentialsNonExpired = true;
boolean accountNonLocked = true;
return new User(account.getLogin(), account.getSenha(), accountIsEnabled, accountNonExpired, credentialsNonExpired, accountNonLocked, getAuthorities(lista));
}
}
This is my application.properties file:
# jdbc.X
spring.datasource.driverClassName=org.postgresql.Driver
spring.datasource.url=jdbc:postgresql://localhost:5432/mystore?charSet=LATIN1
spring.datasource.username=klebermo
spring.datasource.password=123
# hibernate.X
spring.jpa.database-platform=org.hibernate.dialect.PostgreSQLDialect
spring.jpa.dialect=org.hibernate.dialect.PostgreSQLDialect
spring.jpa.show-sql=false
spring.jpa.hibernate.ddl-auto=create-drop
and I have this configuration class to set the sessionFactory bean:
#Configuration
public class HibernateConfig {
#Bean
public HibernateJpaSessionFactoryBean sessionFactory(EntityManagerFactory emf) {
HibernateJpaSessionFactoryBean factory = new HibernateJpaSessionFactoryBean();
factory.setEntityManagerFactory(emf);
return factory;
}
}
anyone can see what I am missing here?
Ok, then after more searches I finally find a solution for this problem. I solvw this adding this method to my Dao class:
public Session getSessionFactory() {
try {
return sessionFactory.getCurrentSession();
} catch (Exception e) {
return sessionFactory.openSession();
}
}
and changing the call:
sessionFactory.getCurrentSession()
in the methods for this:
getSessionFactory()
UPDATE
another solution I found it's use
#Autowired
private EntityManagerFactory factory;
and
public EntityManager getEntityManager() {
return factory.createEntityManager();
}
in my dao class, and in each one of the methods, use something like this:
#Transactional
public void insert(E object) {
getEntityManager().persist(object);
}

java.lang.NullPointerException JPA,Spring, JSF2

Good Morning:
I'm doing a small project, which deals with the maintenance and management of a library.
Performed the first part of JSF and JPA and am now inputting Spring, and part of BOOK I get the following error:
SEVERE: java.lang.NullPointerException
javax.faces.el.EvaluationException: java.lang.NullPointerException
at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:102)
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
at javax.faces.component.UICommand.broadcast(UICommand.java:315)
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:787)
at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1252)
at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:312)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NullPointerException
at persistencia.beans.adminLectoresBean.adminLector(adminLectoresBean.java:95)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.el.parser.AstValue.invoke(AstValue.java:278)
at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:273)
at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88)
... 28 more
jul 17, 2014 9:35:33 AM com.sun.faces.lifecycle.InvokeApplicationPhase execute
WARNING: #{adminLector.adminLector}: java.lang.NullPointerException
javax.faces.FacesException: #{adminLector.adminLector}: java.lang.NullPointerException
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:118)
at javax.faces.component.UICommand.broadcast(UICommand.java:315)
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:787)
at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1252)
at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:312)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)
Caused by: javax.faces.el.EvaluationException: java.lang.NullPointerException
at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:102)
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
... 27 more
Caused by: java.lang.NullPointerException
at persistencia.beans.adminLectoresBean.adminLector(adminLectoresBean.java:95)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.el.parser.AstValue.invoke(AstValue.java:278)
at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:273)
at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88)
... 28 more
applicationContext.xml:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
<!-- Beans Cliente -->
<bean id="lectorDao" class="Dao.LectorDao" autowire="byName"/>
<bean id="lectorManager" class="Manager.LectorManager" autowire="byName"/>
<bean id="lectorDelegate" class="Delegate.LectorDelegate" autowire="byName"/>
</beans>
AdminLector.xhtml:
<h:dataTable value="#{adminLector.listaLectores}" var="l"
styleClass="order-table" headerClass="order-table-header"
rowClasses="order-table-odd-row,order-table-even-row">
<h:column>
<f:facet name="header">
Username
</f:facet>
<h:outputText value="#{l.username}" />
</h:column>
<h:column>
<f:facet name="header">
Nombre
</f:facet>
<h:outputText value="#{l.nombre}" />
</h:column>
<h:column>
<f:facet name="header">
Carnet
</f:facet>
<h:outputText value="#{l.carnetLector}" />
</h:column>
</h:dataTable>
AdminLectorBean.java:
#ManagedBean(name = "adminLector")
#RequestScoped
public class adminLectoresBean {
private Long carnetLector;
private String nombre, usuario, contraseña;
private String usuarioM;
#ManagedProperty(value = "#{lectorDelegate}")
private LectorDelegate idelegate;
#ManagedProperty(value = "#{lectorDao}")
private LectorDao iDao;
private List<Lector> listaLectores;
public List<Lector> getListaLectores() {
return listaLectores;
}
public void setListaLectores(List<Lector> listaLectores) {
this.listaLectores = listaLectores;
}
private Lector lector = new Lector();
public void listarLectores() {
setListaLectores(getIdelegate().listarLectores());
}
public adminLectoresBean() {
super();
listaLectores = new ArrayList<Lector>();
}
public void añadirLector() {
idelegate.añadirLector(getLector());
}
public void borrarLector() {
lector = getIdelegate().seleccionarLector(usuarioM);
getIdelegate().borrarLector(lector);
}
public String getNombre() {
return nombre;
}
public void setNombre(String nombre) {
this.nombre = nombre;
}
public String getUsuario() {
return usuario;
}
public void setUsuario(String usuario) {
this.usuario = usuario;
}
public String getContraseña() {
return contraseña;
}
public void setContraseña(String contraseña) {
this.contraseña = contraseña;
}
public String adminLector() {
listaLectores = getiDao().listarLectores();
return "lector";
}
public Long getCarnetLector() {
return carnetLector;
}
public void setCarnetLector(Long carnetLector) {
this.carnetLector = carnetLector;
}
public String getUsuarioM() {
return usuarioM;
}
public void setUsuarioM(String usuarioM) {
this.usuarioM = usuarioM;
}
public LectorDelegate getIdelegate() {
return idelegate;
}
public void setIdelegate(LectorDelegate idelegate) {
this.idelegate = idelegate;
}
public Lector getLector() {
return lector;
}
public void setLector(Lector lector) {
this.lector = lector;
}
public LectorDao getiDao() {
return iDao;
}
public void setiDao(LectorDao iDao) {
this.iDao = iDao;
}
}
LectorDao.java
public class LectorDao implements ILectorDao {
#Override
public List<Lector> listarLectores() {
EntityManagerFactory emf = Persistence
.createEntityManagerFactory("biblio");
EntityManager em = emf.createEntityManager();
EntityTransaction tx = em.getTransaction();
tx.begin();
String queryString = "SELECT l FROM Lector l";
Query query = em.createQuery(queryString);
List<Lector> listaLectores = (List<Lector>) (query.getResultList());
tx.commit();
em.close();
emf.close();
return listaLectores;
}
#Override
public void añadirLector(Lector L) {
EntityManagerFactory emf = Persistence
.createEntityManagerFactory("biblio");
EntityManager em = emf.createEntityManager();
EntityTransaction tx = em.getTransaction();
tx.begin();
try {
em.persist(L);
tx.commit();
} catch (Exception e) {
tx.rollback();
}
em.close();
emf.close();
}
#Override
public void borrarLector(Lector L) {
EntityManagerFactory emf = Persistence
.createEntityManagerFactory("biblio");
EntityManager em = emf.createEntityManager();
EntityTransaction tx = em.getTransaction();
tx.begin();
try {
/* lector = em.find(Lector.class, usuarioM); */
em.remove(L);
tx.commit();
} catch (Exception e) {
tx.rollback();
}
em.close();
emf.close();
}
#Override
public Lector seleccionarLector(String user) {
EntityManagerFactory emf = Persistence
.createEntityManagerFactory("biblio");
EntityManager em = emf.createEntityManager();
EntityTransaction tx = em.getTransaction();
Lector lector = new Lector();
tx.begin();
try {
lector = em.find(Lector.class, user);
tx.commit();
} catch (Exception e) {
tx.rollback();
}
em.close();
emf.close();
return lector;
}
}
The error that I have is to list the Readers.
Thanks ;)

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