org.hibernate.LazyInitializationException

DrPils · 9. Jun 2022

Hi,

Ich habe in meinem Blog4JUser die Relation zu Role welche lazy initialisiert wird. So wie ich es verstanden habe werden die Lazy Felder initialisiert sobald ich sie aufrufe.
Wenn ich ein Http Request schicke, wird AuthorizationFilter.dofilterInternalaufgerufen, dieser nimmt sich mit UserDetailServiceImpl.loadByUsername() das Blog4JUser Objekt und mappt es zu einem MyUserDetails Objekt. Beim fetchen des Users Objekt wird das Roles Set nicht mit gefetcht. In loadUserByUsername wird der Constuctor der MyUserDetails Klasse aufgerufen. Hier wird das Roles Set nicht gefetcht und entsprechend fliegt dann die Exception.

Java:

@Getter
@Setter
@NoArgsConstructor
@Entity
public class Blog4JUser extends BaseEntity {

    private String userName;
    private String email;
    private String password;
    @ManyToMany(fetch = LAZY, cascade = ALL)
    @JoinTable(
            name = "user_role",
            joinColumns = @JoinColumn(name = "user_id"),
            inverseJoinColumns = @JoinColumn(name = "role_id")
    )
    private Set<Role> roles = new HashSet<>();

    public Blog4JUser(String userName, String email, String password) {
        this.userName = userName;
        this.email = email;
        this.password = password;
    }

    public void addRole(Role role) {
        getRoles().add(role);
    }
}

Java:

@Getter
@Setter
@NoArgsConstructor
@Entity
public class Role extends BaseEntity {

    private String name;
    @ManyToMany(mappedBy = "roles", cascade = ALL)
    private Set<Blog4JUser> blog4JUser = new HashSet<>();

    public Role(String name) {
        this.name = name;
    }
}

Java:

@RequiredArgsConstructor
@Component
public class AuthorizationFilter extends OncePerRequestFilter {
   
    private final JwtService jwtService;
    private final UserDetailServiceImpl userDetailsService;
   
    @Override
    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain)
            throws ServletException, IOException {

        if (request.getHeader(AUTHORIZATION) != null) {
            String userName = jwtService.getAuthUser(request);
            UserDetails userDetails = userDetailsService.loadUserByUsername(userName);
            Authentication authenticationToken = new UsernamePasswordAuthenticationToken(userDetails.getUsername(), null,
                    userDetails.getAuthorities());
            SecurityContextHolder.getContext().setAuthentication(authenticationToken);
        }
        filterChain.doFilter(request, response);


    }
}

Java:

RequiredArgsConstructor
@Service
public class UserDetailServiceImpl implements UserDetailsService {

    private final Blog4JUserRepository userRepository;

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        Blog4JUser user = userRepository.findByUserName(username)
                .orElseThrow(() -> new UsernameNotFoundException(username));
        return new MyUserDetails(user);
    }

}

Java:

@RequiredArgsConstructor
public class MyUserDetails implements UserDetails {

    private final Blog4JUser user;

    @Override
    public Collection<? extends GrantedAuthority> getAuthorities() {
        return user.getRoles().stream()
                .map(Role::getName)
                .map(SimpleGrantedAuthority::new)
                .toList();
    }

    @Override
    public String getPassword() {
        return user.getPassword();
    }

    @Override
    public String getUsername() {
        return user.getUserName();
    }

    @Override
    public boolean isAccountNonExpired() {
        return true;
    }

    @Override
    public boolean isAccountNonLocked() {
        return true;
    }

    @Override
    public boolean isCredentialsNonExpired() {
        return true;
    }

    @Override
    public boolean isEnabled() {
        return true;
    }


}

Code:

org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: de.oninek.blog4j.model.Blog4JUser.roles, could not initialize proxy - no Session
    at org.hibernate.collection.internal.AbstractPersistentCollection.throwLazyInitializationException(AbstractPersistentCollection.java:614) ~[hibernate-core-5.6.9.Final.jar:5.6.9.Final]
    at org.hibernate.collection.internal.AbstractPersistentCollection.withTemporarySessionIfNeeded(AbstractPersistentCollection.java:218) ~[hibernate-core-5.6.9.Final.jar:5.6.9.Final]
    at org.hibernate.collection.internal.AbstractPersistentCollection.initialize(AbstractPersistentCollection.java:591) ~[hibernate-core-5.6.9.Final.jar:5.6.9.Final]
    at org.hibernate.collection.internal.AbstractPersistentCollection.read(AbstractPersistentCollection.java:149) ~[hibernate-core-5.6.9.Final.jar:5.6.9.Final]
    at org.hibernate.collection.internal.PersistentSet.iterator(PersistentSet.java:188) ~[hibernate-core-5.6.9.Final.jar:5.6.9.Final]
    at java.base/java.util.Spliterators$IteratorSpliterator.estimateSize(Spliterators.java:1865) ~[na:na]
    at java.base/java.util.Spliterator.getExactSizeIfKnown(Spliterator.java:414) ~[na:na]
    at java.base/java.util.stream.AbstractPipeline.exactOutputSizeIfKnown(AbstractPipeline.java:470) ~[na:na]
    at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:574) ~[na:na]
    at java.base/java.util.stream.AbstractPipeline.evaluateToArrayNode(AbstractPipeline.java:260) ~[na:na]
    at java.base/java.util.stream.ReferencePipeline.toArray(ReferencePipeline.java:616) ~[na:na]
    at java.base/java.util.stream.ReferencePipeline.toArray(ReferencePipeline.java:622) ~[na:na]
    at java.base/java.util.stream.ReferencePipeline.toList(ReferencePipeline.java:627) ~[na:na]
    at de.oninek.blog4j.security.MyUserDetails.getAuthorities(MyUserDetails.java:22) ~[classes/:na]
    at de.oninek.blog4j.security.AuthorizationFilter.doFilterInternal(AuthorizationFilter.java:34) ~[classes/:na]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.20.jar:5.3.20]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.7.1.jar:5.7.1]
    at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:103) ~[spring-security-web-5.7.1.jar:5.7.1]
    at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:89) ~[spring-security-web-5.7.1.jar:5.7.1]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.7.1.jar:5.7.1]
    at org.springframework.web.filter.CorsFilter.doFilterInternal(CorsFilter.java:91) ~[spring-web-5.3.20.jar:5.3.20]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.20.jar:5.3.20]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.7.1.jar:5.7.1]
    at org.springframework.security.web.header.HeaderWriterFilter.doHeadersAfter(HeaderWriterFilter.java:90) ~[spring-security-web-5.7.1.jar:5.7.1]
    at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:75) ~[spring-security-web-5.7.1.jar:5.7.1]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.20.jar:5.3.20]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.7.1.jar:5.7.1]
    at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:112) ~[spring-security-web-5.7.1.jar:5.7.1]
    at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:82) ~[spring-security-web-5.7.1.jar:5.7.1]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.7.1.jar:5.7.1]
    at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:55) ~[spring-security-web-5.7.1.jar:5.7.1]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.20.jar:5.3.20]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.7.1.jar:5.7.1]
    at org.springframework.security.web.session.DisableEncodeUrlFilter.doFilterInternal(DisableEncodeUrlFilter.java:42) ~[spring-security-web-5.7.1.jar:5.7.1]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.20.jar:5.3.20]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.7.1.jar:5.7.1]
    at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:211) ~[spring-security-web-5.7.1.jar:5.7.1]
    at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:183) ~[spring-security-web-5.7.1.jar:5.7.1]
    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:354) ~[spring-web-5.3.20.jar:5.3.20]
    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:267) ~[spring-web-5.3.20.jar:5.3.20]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.63.jar:9.0.63]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.63.jar:9.0.63]
    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.3.20.jar:5.3.20]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.20.jar:5.3.20]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.63.jar:9.0.63]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.63.jar:9.0.63]
    at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.3.20.jar:5.3.20]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.20.jar:5.3.20]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.63.jar:9.0.63]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.63.jar:9.0.63]
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.3.20.jar:5.3.20]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.20.jar:5.3.20]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.63.jar:9.0.63]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.63.jar:9.0.63]
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197) ~[tomcat-embed-core-9.0.63.jar:9.0.63]
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) ~[tomcat-embed-core-9.0.63.jar:9.0.63]
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) ~[tomcat-embed-core-9.0.63.jar:9.0.63]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135) ~[tomcat-embed-core-9.0.63.jar:9.0.63]
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) ~[tomcat-embed-core-9.0.63.jar:9.0.63]
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) ~[tomcat-embed-core-9.0.63.jar:9.0.63]
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:360) ~[tomcat-embed-core-9.0.63.jar:9.0.63]
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399) ~[tomcat-embed-core-9.0.63.jar:9.0.63]
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-embed-core-9.0.63.jar:9.0.63]
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:890) ~[tomcat-embed-core-9.0.63.jar:9.0.63]
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1743) ~[tomcat-embed-core-9.0.63.jar:9.0.63]
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.63.jar:9.0.63]
    at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) ~[tomcat-embed-core-9.0.63.jar:9.0.63]
    at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) ~[tomcat-embed-core-9.0.63.jar:9.0.63]
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-9.0.63.jar:9.0.63]
    at java.base/java.lang.Thread.run(Thread.java:833) ~[na:na]

mihe7 · 9. Jun 2022

DrPils hat gesagt.:
So wie ich es verstanden habe werden die Lazy Felder initialisiert sobald ich sie aufrufe.

Ich denke, https://stackoverflow.com/a/25710391 beschreibt es ganz gut.

DrPils · 9. Jun 2022

you need to take care that lazy collections (for example in an @OneToMany reference) in your @Entity classes (see FetchMode.LAZY as opposed to FetchMode.EAGER) are used exclusively within an @Transactional-annotated method

Also mit @Transactional die Methode anotieren habe ich schonmal probiert, hat leider nicht geholfen. EAGER wäre einne Lösung, jedoch meine ich mal aufgeschnappt zu haben man sollte EAGER (wegen Performance) nur nutzen wenn es nicht anders geht.

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org.hibernate.LazyInitializationException

DrPils

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