無法初始化代理 - 沒有會話在jax-ws +休眠

我堅持使用JAX-WS公開Web服務。由於JAXB在休眠關閉會話後嘗試序列化對象，因此發生問題。我在過去的兩天Google，但無法得出正確的答案。以下是其他人提供的某些解決方案。無法初始化代理 - 沒有會話在jax-ws +休眠

貪婪加載對象
使用@XmlTransient
SOAPHandler但它沒有完成答案

下面是詳細的情況。我寫了一個模型類，它有@OneTOMany關係的數量，@ManyToOne關係和@OneToOne關係。 Web服務返回該類的對象。當我通過SOAP UI調用服務時，它給了我下面的錯誤信息。

@SchemaValidation 
@WebService(targetNamespace = "http://lk.gov.elg/core/ws/form/", endpointInterface = "lk.gov.elg.core.ws.citizen.FormWebService") 
public class FormWebServiceImpl extends SpringBeanAutowiringSupport implements FormWebService { 

    private static final Logger logger = LoggerFactory.getLogger(FormWebServiceImpl.class); 
    @Autowired 
    private FormService formService; 

    @Override 
    public List<Form> getAllFormsWithDocumentReferences(
      @WebParam(name = "tenantId", targetNamespace = "http://lk.gov.elg/core/ws/form/") String tenantId, 
      @WebParam(name = "categoryName", targetNamespace = "http://lk.gov.elg/core/ws/form/") String categoryName) { 

     List<Form> formList = formService.getAllFormsWithDocRefs(tenantId, categoryName); 
     return formList; 
    } 
}

<S:Envelope xmlns:S="http://schemas.xmlsoap.org/soap/envelope/"> 
    <S:Body> 
     <S:Fault xmlns:ns4="http://www.w3.org/2003/05/soap-envelope"> 
     <faultcode>S:Server</faultcode> 
     <faultstring>could not initialize proxy - no Session</faultstring> 
     </S:Fault> 
    </S:Body> 
</S:Envelope>

Model類（不含getter和setter）

@XmlAccessorType(XmlAccessType.FIELD) 
@XmlRootElement 
@Entity 
@AttributeOverrides({ @AttributeOverride(name = "id", column = @Column(name = "mas_form_id")), 
     @AttributeOverride(name = "tenantId", column = @Column(name = "mas_form_tenant_id")) }) 
@FilterDef(name = "tenantFilter", parameters = @ParamDef(name = "tenantIdParam", type = "string")) 
@Filters(@Filter(name = "tenantFilter", condition = "mas_form_tenant_id = :tenantIdParam")) 
@Table(name = "mas_form") 
public class Form extends BaseRevolution { 

    @Column(name = "mas_form_action") 
    private String formAction; 
    @Column(name = "mas_form_is_active") 
    private boolean isActive; 
    @Column(name = "mas_form_is_lock") 
    private boolean isLock; 
    @ManyToOne 
    @JoinColumn(name = "mas_ft_id") 
    private FormType formType; 
    @OneToMany(fetch = FetchType.LAZY, mappedBy = FORM) 
    private List<FormQuestion> formQuestions = new ArrayList<FormQuestion>(0); 
    @OneToMany(fetch = FetchType.LAZY, mappedBy = FORM) 
    @LazyCollection(LazyCollectionOption.FALSE) 
    private Set<DocumentRequired> documentRequiredSet = new HashSet<DocumentRequired>(0); 
    @OneToMany(fetch = FetchType.LAZY, mappedBy = FORM) 
    private List<Application> applications = new ArrayList<Application>(0); 
    @OneToMany(fetch = FetchType.LAZY, mappedBy = FORM) 
    @LazyCollection(LazyCollectionOption.FALSE) 
    private List<FormField> formFields = new ArrayList<FormField>(0); 
    @OneToMany(fetch = FetchType.LAZY, mappedBy = FORM) 
    private List<FormCharge> formCharges = new ArrayList<FormCharge>(0); 
    @Column(name = "mas_form_method") 
    private String formMethod; 
    @OneToMany(fetch = FetchType.LAZY, mappedBy = FORM) 
    private List<FormFieldGroup> formFieldGroup; 
    @Column(name = "mas_form_name_en") 
    private String formNameEn; 
    @Column(name = "mas_form_name_si") 
    private String formNameSi; 
    @Column(name = "mas_form_name_ta") 
    private String formNameTa; 
    @OneToOne(fetch = FetchType.EAGER) 
    @JoinColumn(name = "activity") 
    private ElgActivity elgActivity; 
    @Column(name = "description", nullable = true, length = 1000) 
    private String description; 

    //getters and setters 

}

Web服務接口

@WebService(name = "formWebServicePort", targetNamespace = "http://lk.gov.elg/core/ws/form/") 
public interface FormWebService { 

    @WebMethod(operationName = "getAllFormsWithDocumentReferences", action = "urn:GetAllFormsWithDocumentReferences") 
    @SOAPBinding(parameterStyle = SOAPBinding.ParameterStyle.WRAPPED) 
    @WebResult(name = "formsWithDocumentReferences") 
    List<Form> getAllFormsWithDocumentReferences(
      @WebParam(name = "tenantId", targetNamespace = "http://lk.gov.elg/core/ws/form/") String tenantId, 
      @WebParam(name = "categoryName", targetNamespace = "http://lk.gov.elg/core/ws/form/") String categoryName); 
}

Web服務實現幫我解決這個問題。提前致謝。

來源

2013-05-28 Indika Sampath

您是否嘗試在退出會話之前初始化表單實體的集合？這會導致集合被加載。所以基本上它做同樣的急切加載應該做，但不知何故急切加載並不總是幫助。如果需要，我可以在晚些時候或明天詳細瞭解這些信息。

來源

2013-05-28 17:37:01 Carsten

嗨卡斯滕，我需要更多這方面的細節：我們最近通過添加（EJB3）攔截器方法的會話Bean（我們使用JBoss7）克服這一點。請幫忙。我從你那裏得到的答覆是我們需要在返回Form實體之前調用Collection的getter方法。是這樣嗎？？？謝謝。 –

是的，這是關於正確的。通過調用Hibernate.initialize（Form.getAnyCollection（）），您可以在離開會話/事務之前初始化集合。至少那是什麼對我有用。 – Carsten

只是一個想法：

@javax.interceptor.AroundInvoke 
public Object intercept(InvocationContext ctx) throws Exception { 
     Object result = ctx.proceed(); 

     // Add code here to inspect the result and initialize all collections. 

     return result; 
}

來源

2013-05-29 07:53:02 Jeroen

無法初始化代理 - 沒有會話在jax-ws +休眠

回答

相關問題