1

我的代码出现异常，该代码运行良好。将调用一个操作方法，但是在方法调用完成后我得到了这个异常。

我尝试了网络上所有可用的选项，但似乎没有什么能真正帮助我。

12/14 23:30:17 INFO  er.SessionDetectionInterceptor  - as dualauth is disabled. session interceptor doesnt validate
12/14 23:30:22 ERROR te.LazyInitializationException  - failed to lazily initialize a collection of role: com.apalya.model.User.broadband, no session or session was closed
org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: com.apalya.model.User.broadband, no session or session was closed
    at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationException(AbstractPersistentCollection.java:358)
    at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationExceptionIfNotConnected(AbstractPersistentCollection.java:350)
    at org.hibernate.collection.AbstractPersistentCollection.initialize(AbstractPersistentCollection.java:343)
    at org.hibernate.collection.AbstractPersistentCollection.read(AbstractPersistentCollection.java:86)
    at org.hibernate.collection.PersistentSet.equals(PersistentSet.java:406)
    at java.util.Vector.indexOf(Vector.java:361)
    at java.util.Vector.contains(Vector.java:320)
    at org.apache.struts2.json.JSONWriter.value(JSONWriter.java:109)
    at org.apache.struts2.json.JSONWriter.add(JSONWriter.java:352)
    at org.apache.struts2.json.JSONWriter.bean(JSONWriter.java:215)
    at org.apache.struts2.json.JSONWriter.process(JSONWriter.java:160)
    at org.apache.struts2.json.JSONWriter.value(JSONWriter.java:126)
    at org.apache.struts2.json.JSONWriter.add(JSONWriter.java:352)
    at org.apache.struts2.json.JSONWriter.bean(JSONWriter.java:215)
    at org.apache.struts2.json.JSONWriter.process(JSONWriter.java:160)
    at org.apache.struts2.json.JSONWriter.value(JSONWriter.java:126)
    at org.apache.struts2.json.JSONWriter.add(JSONWriter.java:352)
    at org.apache.struts2.json.JSONWriter.bean(JSONWriter.java:215)
    at org.apache.struts2.json.JSONWriter.process(JSONWriter.java:160)
    at org.apache.struts2.json.JSONWriter.value(JSONWriter.java:126)
    at org.apache.struts2.json.JSONWriter.add(JSONWriter.java:352)
    at org.apache.struts2.json.JSONWriter.bean(JSONWriter.java:215)
    at org.apache.struts2.json.JSONWriter.process(JSONWriter.java:160)
    at org.apache.struts2.json.JSONWriter.value(JSONWriter.java:126)
    at org.apache.struts2.json.JSONWriter.array(JSONWriter.java:441)
    at org.apache.struts2.json.JSONWriter.process(JSONWriter.java:150)
    at org.apache.struts2.json.JSONWriter.value(JSONWriter.java:126)
    at org.apache.struts2.json.JSONWriter.add(JSONWriter.java:352)
    at org.apache.struts2.json.JSONWriter.bean(JSONWriter.java:215)
    at org.apache.struts2.json.JSONWriter.process(JSONWriter.java:160)
    at org.apache.struts2.json.JSONWriter.value(JSONWriter.java:126)
    at org.apache.struts2.json.JSONWriter.write(JSONWriter.java:94)
    at org.apache.struts2.json.JSONUtil.serialize(JSONUtil.java:115)
    at org.apache.struts2.json.JSONResult.createJSONString(JSONResult.java:200)
    at org.apache.struts2.json.JSONResult.execute(JSONResult.java:172)
    at com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:362)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:266)
    at com.apalya.filter.SessionDetectionInterceptor.intercept(SessionDetectionInterceptor.java:117)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at com.apalya.filter.UserDetectionInterceptor.intercept(UserDetectionInterceptor.java:53)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:165)
    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:252)
    at org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68)
    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:122)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:195)
    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:195)
    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:179)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:235)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:89)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:126)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:138)
    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:195)
    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:75)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:94)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:165)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:179)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:176)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at com.opensymphony.xwork2.interceptor.ParameterFilterInterceptor.intercept(ParameterFilterInterceptor.java:135)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at org.apache.struts2.interceptor.CreateSessionInterceptor.intercept(CreateSessionInterceptor.java:93)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:52)
    at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:488)
    at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:395)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.displaytag.filter.ResponseOverrideFilter.doFilter(ResponseOverrideFilter.java:125)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at com.apalya.filter.XSSFilter.doFilter(XSSFilter.java:29)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:738)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:615)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
    at java.lang.Thread.run(Thread.java:662)
org.apache.struts2.json.JSONException: org.apache.struts2.json.JSONException: org.apache.struts2.json.JSONException: org.apache.struts2.json.JSONException: org.apache.struts2.json.JSONException: org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: com.apalya.model.User.broadband, no session or session was closed
    at org.apache.struts2.json.JSONWriter.bean(JSONWriter.java:230)
    at org.apache.struts2.json.JSONWriter.process(JSONWriter.java:160)
    at org.apache.struts2.json.JSONWriter.value(JSONWriter.java:126)
    at org.apache.struts2.json.JSONWriter.write(JSONWriter.java:94)
    at org.apache.struts2.json.JSONUtil.serialize(JSONUtil.java:115)
    at org.apache.struts2.json.JSONResult.createJSONString(JSONResult.java:200)
    at org.apache.struts2.json.JSONResult.execute(JSONResult.java:172)
    at com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:362)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:266)
    at com.apalya.filter.SessionDetectionInterceptor.intercept(SessionDetectionInterceptor.java:117)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at com.apalya.filter.UserDetectionInterceptor.intercept(UserDetectionInterceptor.java:53)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:165)
    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:252)
    at org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68)
    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:122)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:195)
    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:195)
    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:179)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:235)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:89)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:126)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:138)
    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:195)
    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:75)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:94)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:165)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:179)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:176)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at com.opensymphony.xwork2.interceptor.ParameterFilterInterceptor.intercept(ParameterFilterInterceptor.java:135)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at org.apache.struts2.interceptor.CreateSessionInterceptor.intercept(CreateSessionInterceptor.java:93)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
    at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:52)
    at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:488)
    at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:395)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.displaytag.filter.ResponseOverrideFilter.doFilter(ResponseOverrideFilter.java:125)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at com.apalya.filter.XSSFilter.doFilter(XSSFilter.java:29)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:738)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:615)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
    at java.lang.Thread.run(Thread.java:662)
Caused by: org.apache.struts2.json.JSONException: org.apache.struts2.json.JSONException: org.apache.struts2.json.JSONException: org.apache.struts2.json.JSONException: org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: com.apalya.model.User.broadband, no session or session was closed
    at org.apache.struts2.json.JSONWriter.bean(JSONWriter.java:230)
    at org.apache.struts2.json.JSONWriter.process(JSONWriter.java:160)
    at org.apache.struts2.json.JSONWriter.value(JSONWriter.java:126)
    at org.apache.struts2.json.JSONWriter.array(JSONWriter.java:441)
    at org.apache.struts2.json.JSONWriter.process(JSONWriter.java:150)
    at org.apache.struts2.json.JSONWriter.value(JSONWriter.java:126)
    at org.apache.struts2.json.JSONWriter.add(JSONWriter.java:352)
    at org.apache.struts2.json.JSONWriter.bean(JSONWriter.java:215)
    ... 86 more
Caused by: org.apache.struts2.json.JSONException: org.apache.struts2.json.JSONException: org.apache.struts2.json.JSONException: org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: com.apalya.model.User.broadband, no session or session was closed
    at org.apache.struts2.json.JSONWriter.bean(JSONWriter.java:230)
    at org.apache.struts2.json.JSONWriter.process(JSONWriter.java:160)
    at org.apache.struts2.json.JSONWriter.value(JSONWriter.java:126)
    at org.apache.struts2.json.JSONWriter.add(JSONWriter.java:352)
    at org.apache.struts2.json.JSONWriter.bean(JSONWriter.java:215)
    ... 93 more
Caused by: org.apache.struts2.json.JSONException: org.apache.struts2.json.JSONException: org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: com.apalya.model.User.broadband, no session or session was closed
    at org.apache.struts2.json.JSONWriter.bean(JSONWriter.java:230)
    at org.apache.struts2.json.JSONWriter.process(JSONWriter.java:160)
    at org.apache.struts2.json.JSONWriter.value(JSONWriter.java:126)
    at org.apache.struts2.json.JSONWriter.add(JSONWriter.java:352)
    at org.apache.struts2.json.JSONWriter.bean(JSONWriter.java:215)
    ... 97 more
Caused by: org.apache.struts2.json.JSONException: org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: com.mypersonal.model.User.broadband, no session or session was closed
    at org.apache.struts2.json.JSONWriter.bean(JSONWriter.java:230)
    at org.apache.struts2.json.JSONWriter.process(JSONWriter.java:160)
    at org.apache.struts2.json.JSONWriter.value(JSONWriter.java:126)
    at org.apache.struts2.json.JSONWriter.add(JSONWriter.java:352)
    at org.apache.struts2.json.JSONWriter.bean(JSONWriter.java:215)
    ... 101 more
Caused by: org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: com.mypersonal.model.User.broadband, no session or session was closed
    at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationException(AbstractPersistentCollection.java:358)
    at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationExceptionIfNotConnected(AbstractPersistentCollection.java:350)
    at org.hibernate.collection.AbstractPersistentCollection.initialize(AbstractPersistentCollection.java:343)
    at org.hibernate.collection.AbstractPersistentCollection.read(AbstractPersistentCollection.java:86)
    at org.hibernate.collection.PersistentSet.equals(PersistentSet.java:406)
    at java.util.Vector.indexOf(Vector.java:361)
    at java.util.Vector.contains(Vector.java:320)
    at org.apache.struts2.json.JSONWriter.value(JSONWriter.java:109)
    at org.apache.struts2.json.JSONWriter.add(JSONWriter.java:352)
    at org.apache.struts2.json.JSONWriter.bean(JSONWriter.java:215)
    ... 105 more

我的模特班

@Entity
@Table(name = "user")
public class User implements Serializable {

    private static final long serialVersionUID = 1L;
    private Long id;

    private Boolean approved;
    private Boolean subscribed;
    private Date createdOn;

    private Set<UserBroadband> broadband;
    private Set<UserBussinessModel> userBussinessModel;

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }



    @Column(name = "approved")
    public void setApproved(Boolean approved) {
        this.approved = approved;
    }

    public Boolean getApproved() {
        return approved;
    }

    @Column(name = "createdOn")
    public void setCreatedOn(Date createdOn) {
        this.createdOn = createdOn;
    }

    public Date getCreatedOn() {
        return createdOn;
    }

    /*@OneToMany(targetEntity = com.apalya.model.UserBussinessModel.class, cascade = CascadeType.ALL, fetch = FetchType.LAZY, mappedBy = "id")
    @JsonIgnore*/
    @OneToMany( fetch = FetchType.LAZY, cascade = { CascadeType.PERSIST, CascadeType.MERGE }, mappedBy = "user"  )
    @org.hibernate.annotations.Cascade({org.hibernate.annotations.CascadeType.SAVE_UPDATE})
    @Basic( optional = false )
    @Column( nullable = false  )
    public Set<UserBussinessModel> getUserBussinessModel() {
        return userBussinessModel;
    }

    public void setUserBussinessModel(Set<UserBussinessModel> userBussinessModel) {
        this.userBussinessModel = userBussinessModel;
    }

    @Column(name = "company")
    public String getCompany() {
        return company;
    }

    public void setCompany(String company) {
        this.company = company;
    }

    @Column(name = "status")
    public String getStatus() {
        return status;
    }

    public void setStatus(String status) {
        this.status = status;
    }

    @Column(name = "subscribed")
    public Boolean getSubscribed() {
        return subscribed;
    }

    public void setSubscribed(Boolean subscribed) {
        this.subscribed = subscribed;
    }

    @Column(name = "auto_provision")
    public Boolean getAutoProvision() {
        return autoProvision;
    }

    public void setAutoProvision(Boolean autoProvision) {
        this.autoProvision = autoProvision;
    }

    /**
     * @param fname the fname to set
     */
    public void setFname(String fname) {
        this.fname = fname;
    }

    /**
     * @return the fname
     */
    @Column(name = "first_name")
    public String getFname() {
        return fname;
    }

    /**
     * @param lname the lname to set
     */
    public void setLname(String lname) {
        this.lname = lname;
    }

    /**
     * @return the lname
     */
    @Column(name = "last_name")
    public String getLname() {
        return lname;
    }

    /**
     * @param lastLoggedOn the lastLoggedOn to set
     */
    public void setLastLoggedOn(Date lastLoggedOn) {
        this.lastLoggedOn = lastLoggedOn;
    }

    /**
     * @return the lastLoggedOn
     */
    public Date getLastLoggedOn() {
        return lastLoggedOn;
    }

    @Column(name = "from_date")
    public Date getFromDate() {
        return fromDate;
    }

    public void setFromDate(Date fromDate) {
        this.fromDate = fromDate;
    }
    @Column(name = "to_date")
    public Date getToDate() {
        return toDate;
    }

    public void setToDate(Date toDate) {
        this.toDate = toDate;
    }
    /*@OneToMany(targetEntity = com.apalya.model.UserBroadband.class, cascade = CascadeType.ALL, fetch = FetchType.LAZY, mappedBy = "id")
    @JsonIgnore*/
    @OneToMany( fetch = FetchType.LAZY, cascade = { CascadeType.PERSIST, CascadeType.MERGE }, mappedBy = "userId"  )
    @org.hibernate.annotations.Cascade({org.hibernate.annotations.CascadeType.SAVE_UPDATE})
    @Basic( optional = false )
    @Column( nullable = false  )
    public Set<UserBroadband> getBroadband() {
        return broadband;
    }

    public void setBroadband(Set<UserBroadband> broadband) {
        this.broadband = broadband;
    }

}
4

5 回答 5

4

当您在对象之间建立关系时会发生延迟初始化异常，例如，（一对多）客户有很多汽车。所以发生的情况是，您进行查询，获取客户列表，然后关闭会话。在此之后，如果您尝试访问客户端对象内的汽车集合（未加载），您将获得异常。你没有发布你的代码......这将有更多帮助。

编辑：这正是你的例外所说的

未能延迟初始化角色集合：com.mypersonal.model.User.broadband，没有会话或会话已关闭

于 2012-12-14T18:53:23.170 回答
1

You should either make eager fetch

public Set<UserBroadband> getBroadband() @OneToMany( fetch = FetchType.EAGER

or do your JSON serializing before session is closed.

When you are serializing your entity object after session is closed, it is not able to fetch lazy collection in that object.

于 2012-12-14T19:23:10.990 回答
1

人们需要问的第一个问题是他们是否需要这些收藏品。如果他们需要这些集合，那么最好将其设置为 EAGER 加载。

如果不需要集合，则在序列化过程发生之前，将所有集合设置为空。

我通过将所有集合设置为空来开始工作。

于 2013-03-27T04:45:30.903 回答
0

复制以下已回答的问题：

您可以使用HibernateFullPlugin或使用拦截器实现的此解决方案（与 HibernateFullPlugin 相同但更简单）。

于 2013-03-07T17:27:14.147 回答
0

您需要在用户中急切地加载属性“宽带”。应该很容易修复。Hibernate默认懒加载集合，你只需要在注解中添加 fetch = FetchType.EAGER 还是在xml中做类似的事情。

另一种选择是在宽带属性尚未从会话中分离时调用它。为此，您需要知道您的交易在哪里结束，因为您的会话之前已关闭。然后 Hibernate 将填充该字段而不会引发错误，因为它仍然可以访问数据库。

了解 Hibernate 出于性能原因这样做。如果您在一个查询中获取所有内容，您最终可能会获取整个数据库（披萨效应）。

于 2012-12-14T18:58:31.560 回答