Question

好的，我连续几天都在尝试这个，但似乎无法弄清楚是什么问题。这里的基本想法是，我正在尝试创建一个显示属性的restful Web服务两个实体bean彼此具有多重双向关系。现在我想使用moxy实现 JAXB利用@XmlInverseReference注释来维护引用完整性，但不断提出异常。以下是我班级以外的我正在使用glassfish 3.1.1和moxy eclipselink 2.3.0

Passenger Class:

package kharesoft.sita;

import java.io.Serializable;
import java.util.Date;
import java.util.List;
import java.util.Set;
import javax.persistence.*;
import javax.xml.bind.annotation.*;


@XmlRootElement
@XmlType(propOrder = {"id", "firstName", "lastName", "boardingNo", "seatNo", "flightNo", "dateOfFlight", "bags"})
@Entity
@NamedQuery(name = "findPaxByBagTag", query = "select p from Passenger p,IN (p.bags) b where b.bagTagNo=:bagTagNo")
@XmlAccessorType(XmlAccessType.FIELD)
public class Passenger implements Serializable {

    @XmlElement
    private String firstName;
    @XmlElement
    private String lastName;
    @XmlElement
    private String boardingNo;
    @XmlElement
    private String seatNo;
    @XmlElement
    private String flightNo;
    @XmlElement
    @Temporal(javax.persistence.TemporalType.DATE)
    private Date dateOfFlight;
    @XmlElementWrapper  
    @XmlElements({
    @XmlElement(name = "bagtag")})
    @OneToMany(mappedBy = "passenger")
    private Set<Bag> bags;
    private static final long serialVersionUID = 1L;
    @XmlElement
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;

    public Long getId() {
        return id;
    }

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

    public Set<Bag> getBags() {
        return bags;
    }

    public void setBags(Set<Bag> bags) {
        this.bags = bags;
    }

    //Remaining getters and setters not shown

    @Override
    public int hashCode() {
        int hash = 0;
        hash += (id != null ? id.hashCode() : 0);
        return hash;
    }

    @Override
    public boolean equals(Object object) {
        // TODO: Warning - this method won't work in the case the id fields are not set
        if (!(object instanceof Passenger)) {
            return false;
        }
        Passenger other = (Passenger) object;
        if ((this.id == null && other.id != null) || (this.id != null && !this.id.equals(other.id))) {
            return false;
        }
        return true;
    }

    @Override
    public String toString() {
        return "kharesoft.sita.Passenger[ id=" + id + " ]";
    }
}


Bag Class:


package kharesoft.sita;

import java.io.Serializable;
import javax.persistence.*;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
import org.eclipse.persistence.oxm.annotations.XmlInverseReference;


@XmlRootElement
@Entity
@NamedQuery(name = "findBagWithTagNo", query = "select b from Bag b where b.bagTagNo=:bagTagNo")
@XmlAccessorType(XmlAccessType.FIELD)
public class Bag implements Serializable {

    private static final long serialVersionUID = 1L;
    @XmlElement
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;
    @XmlElement
    private String bagTagNo;
    @XmlElement
    @ManyToOne
    private Passenger passenger;


    //other getters and setters not shown

    @XmlInverseReference(mappedBy = "bags")
    public Passenger getPassenger() {
        return passenger;
    }

    public void setPassenger(Passenger passenger) {
        this.passenger = passenger;
    }

    @Override
    public int hashCode() {
        int hash = 0;
        hash += (id != null ? id.hashCode() : 0);
        return hash;
    }

    @Override
    public boolean equals(Object object) {
        // TODO: Warning - this method won't work in the case the id fields are not set
        if (!(object instanceof Bag)) {
            return false;
        }
        Bag other = (Bag) object;
        if ((this.id == null && other.id != null) || (this.id != null && !this.id.equals(other.id))) {
            return false;
        }
        return true;
    }

    @Override
    public String toString() {        
        return bagTagNo;
    }
}

例外：

SEVERE：映射异常响应：500（内部服务器错误） javax.ws.rs.WebApplicationException：javax.xml.bind.JAXBException：异常描述：在类[kharesoft.sita.Bag]上找到名为[passenger]的重复属性 - 链接异常： [Exception [EclipseLink-50072]（Eclipse Persistence Services - 2.3.0.v20110604-r9504）：org.eclipse.persistence.exceptions.JAXBException 例外描述：在类[kharesoft.sita.Bag]上找到名为[passenger]的重复属性] at com.sun.jersey.core.provider.jaxb.AbstractListElementProvider.writeTo（AbstractListElementProvider.java:183） at com.sun.jersey.spi.container.ContainerResponse.write（ContainerResponse.java:306） at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest（WebApplicationImpl.java:1437） at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest（WebApplicationImpl.java:1349） at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest（WebApplicationImpl.java:1339）在com.sun.jersey.spi.container.servlet.WebComponent.service（WebComponent.java:416）在com.sun.jersey.spi.container.servlet.ServletContainer.service（ServletContainer.java:537）在com.sun.jersey.spi.container.servlet.ServletContainer.service（ServletContainer.java:699）在javax.servlet.http.HttpServlet.service（HttpServlet.java:847）在org.apache.catalina.core.StandardWrapper.service（StandardWrapper.java:1539）在org.apache.catalina.core.StandardWrapperValve.invoke（StandardWrapperValve.java:281）在org.apache.catalina.core.StandardContextValve.invoke（StandardContextValve.java:175）在org.apache.catalina.core.StandardPipeline.doInvoke（StandardPipeline.java:655）在org.apache.catalina.core.StandardPipeline.invoke（StandardPipeline.java:595）在com.sun.enterprise.web.WebPipeline.invoke（WebPipeline.java:98） at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke（PESessionLockingStandardPipeline.java:91） at org.apache.catalina.core.StandardHostValve.invoke（StandardHostValve.java:162）在org.apache.catalina.connector.CoyoteAdapter.doService（CoyoteAdapter.java:330）在org.apache.catalina.connector.CoyoteAdapter.service（CoyoteAdapter.java:231） at com.sun.enterprise.v3.services.impl.ContainerMapper.service（ContainerMapper.java:174） at com.sun.grizzly.http.ProcessorTask.invokeAdapter（ProcessorTask.java:828）在com.sun.grizzly.http.ProcessorTask.doProcess（ProcessorTask.java:725）在com.sun.grizzly.http.ProcessorTask.process（ProcessorTask.java:1019） at com.sun.grizzly.http.DefaultProtocolFilter.execute（DefaultProtocolFilter.java:225） at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter（DefaultProtocolChain.java:137）在com.sun.grizzly.DefaultProtocolChain.execute（DefaultProtocolChain.java:104）在com.sun.grizzly.DefaultProtocolChain.execute（DefaultProtocolChain.java:90）在com.sun.grizzly.http.HttpProtocolChain.execute（HttpProtocolChain.java:79） at com.sun.grizzly.ProtocolChainContextTask.doCall（ProtocolChainContextTask.java:54）在com.sun.grizzly.SelectionKeyContextTask.call（SelectionKeyContextTask.java:59）在com.sun.grizzly.ContextTask.run（ContextTask.java:71） at com.sun.grizzly.util.AbstractThreadPool $ Worker.doWork（AbstractThreadPool.java:532）在com.sun.grizzly.util.AbstractThreadPool $ Worker.run（AbstractThreadPool.java:513）在java.lang.Thread.run（Thread.java:722）引起：javax.xml.bind.JAXBException：异常描述：在类[kharesoft.sita.Bag]上找到名为[passenger]的重复属性 - 链接异常： [Exception [EclipseLink-50072]（Eclipse Persistence Services - 2.3.0.v20110604-r9504）：org.eclipse.persistence.exceptions.JAXBException 例外描述：在类[kharesoft.sita.Bag]上找到名为[passenger]的重复属性] at org.eclipse.persistence.jaxb.JAXBContext $ TypeMappingInfoInput.createContextState（JAXBContext.java:825）在org.eclipse.persistence.jaxb.JAXBContext。（JAXBContext.java:136） at org.eclipse.persistence.jaxb.JAXBContextFactory.createContext（JAXBContextFactory.java:142）在org.eclipse.persistence.jaxb.JAXBContextFactory.createContext（JAXBContextFactory.java:129） at org.eclipse.persistence.jaxb.JAXBContextFactory.createContext（JAXBContextFactory.java:93）在org.eclipse.persistence.jaxb.JAXBContextFactory.createContext（JAXBContextFactory.java:83） at sun.reflect.NativeMethodAccessorImpl.invoke0（Native Method） at sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:57） at sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43）在java.lang.reflect.Method.invoke（Method.java:601）在javax.xml.bind.ContextFinder.newInstance（ContextFinder.java:263）在javax.xml.bind.ContextFinder.newInstance（ContextFinder.java:250）在javax.xml.bind.ContextFinder.find（ContextFinder.java:400）在javax.xml.bind.JAXBContext.newInstance（JAXBContext.java:652）在javax.xml.bind.JAXBContext.newInstance（JAXBContext.java:599） at com.sun.jersey.core.provider.jaxb.AbstractJAXBProvider.getStoredJAXBContext（AbstractJAXBProvider.java:189） at com.sun.jersey.core.provider.jaxb.AbstractJAXBProvider.getJAXBContext（AbstractJAXBProvider.java:182）在com.sun.jersey.core.provider.jaxb.AbstractJAXBProvider.getMarshaller（AbstractJAXBProvider.java:160）在com.sun.jersey.core.provider.jaxb.AbstractJAXBProvider.getMarshaller（AbstractJAXBProvider.java:139）在com.sun.jersey.core.provider.jaxb.AbstractListElementProvider.writeTo（AbstractListElementProvider.java:175） ......还有33个引起：异常[EclipseLink-50072]（Eclipse Persistence Services - 2.3.0.v20110604-r9504）：org.eclipse.persistence.exceptions.JAXBException 异常描述：在类[kharesoft.sita.Bag]上找到名为[passenger]的重复属性 at org.eclipse.persistence.exceptions.JAXBException.duplicatePropertyName（JAXBException.java:943） at org.eclipse.persistence.jaxb.compiler.TypeInfo.addProperty（TypeInfo.java:265）在org.eclipse.persistence.jaxb.compiler.TypeInfo.setProperties（TypeInfo.java:292） at org.eclipse.persistence.jaxb.compiler.AnnotationsProcessor.buildTypeInfo（AnnotationsProcessor.java:677） at org.eclipse.persistence.jaxb.compiler.AnnotationsProcessor.postBuildTypeInfo（AnnotationsProcessor.java:591） at org.eclipse.persistence.jaxb.compiler.AnnotationsProcessor.buildNewTypeInfo（AnnotationsProcessor.java:4050）在org.eclipse.persistence.jaxb.compiler.AnnotationsProcessor.processPropertyTypes（AnnotationsProcessor.java:858）在org.eclipse.persistence.jaxb.compiler.AnnotationsProcessor.processClassesAndProperties（AnnotationsProcessor.java:233）在org.eclipse.persistence.jaxb.compiler.Generator。（Generator.java:147） at org.eclipse.persistence.jaxb.JAXBContext $ TypeMappingInfoInput.createContextState（JAXBContext.java:822） ... 52更多

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Answer 1

由于您已在@XmlAccessorType(XmlAccessType.FIELD)课程中指定了Bag，因此您应将@XmlInverseReference注释移至该字段。因为MOXy认为你想要映射字段和属性，并且抱怨因为它们都有相同的名称。

错误使用moxy编组带注释的类

1 个答案: