Jsf 2 - no session or session was closed

Front-end
#1

Galera eu tenho um objeto usuario que tem seu tipo e quando dou o get no tipo tenho esse porque naum fiz o join no momento do select ate ai beleza

mas eu queria saber se exite alguma forma que naum fosse com o spring de nesse casso o atributo recebesse nulo, ai quando eu desse o get ele retornaria null enves de tentar carregar o carra do banco de dados

tem como fazer isso ?

#2

Faz setLista(null).

Ou então trate corretamente o problema: Quatro soluções para LazyInitializationException.

#3

tentei utilizar

@Resource
    private UserTransaction utx;

mas tive esse erro

GRAVE: Exception starting filter ConnectionFilter
javax.naming.NamingException: Cannot create resource instance
	at org.apache.naming.factory.ResourceEnvFactory.getObjectInstance(ResourceEnvFactory.java:117)
	at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:304)
	at org.apache.naming.NamingContext.lookup(NamingContext.java:843)
	at org.apache.naming.NamingContext.lookup(NamingContext.java:154)
	at org.apache.naming.NamingContext.lookup(NamingContext.java:831)
	at org.apache.naming.NamingContext.lookup(NamingContext.java:168)
	at org.apache.catalina.core.DefaultInstanceManager.lookupFieldResource(DefaultInstanceManager.java:578)
	at org.apache.catalina.core.DefaultInstanceManager.processAnnotations(DefaultInstanceManager.java:468)
	at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:144)
	at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:125)
	at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:256)
	at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:382)
	at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:103)
	at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4638)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5294)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	at org.apache.catalina.manager.ManagerServlet.start(ManagerServlet.java:1247)
	at org.apache.catalina.manager.ManagerServlet.doGet(ManagerServlet.java:372)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.apache.catalina.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:108)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:581)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:999)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:565)
	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:309)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:662)
#4