使用 IDResolver 时解组 JAXB 集合失败，因为 IDResolver 对象作为目标类型
我在尝试从其余 Web 服务 (cxf) 中解组 json 时遇到此问题。 我正在使用 JAXB 和 EclipseLink。
实体的映射如下：
@Entity
@Table(name = "service_pkg_service", schema = "MD")
@XmlRootElement
@XmlAccessorType(XmlAccessType.FIELD)
public class ServicePkgService extends DatabaseModel implements java.io.Serializable {
@Transient
@XmlIDREF
private Set<ChannelPkgService> channelPkgServices = new HashSet<ChannelPkgService>();
}
@Entity
@Table(name = "channel_pkg_service", schema = "MD")
@XmlAccessorType(XmlAccessType.FIELD)
@XmlRootElement
public class ChannelPkgService extends DatabaseModel implements java.io.Serializable{
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "CHANNEL_PKG_ID")
@XmlID
@XmlAttribute
private String id;
}
我有一个扩展 IDResolver 的类，因此我可以根据其 ID 生成一个实体。
public class EntityIDResolver extends IDResolver{
@Override
public void bind(String id, Object obj) throws SAXException {
}
@SuppressWarnings({ "rawtypes", "unchecked" })
@Override
public Callable<?> resolve(final String id, Class targetType) throws SAXException {
}
}
我在解组 json 时遇到问题，如下所示 "channelPkgService": [1,2,3]，targetType 的类是 java.lang.Object
我读了这个 https://github.com/javaee/jaxb-v2/issues/546 ，并创建了一个包装器来处理此问题。
public class ChannelPkgServiceWrapper extends HashSet<ChannelPkgService>{
}
由于我有很多这样的情况，我不想创建很多包装器，有没有更通用的方法来处理这个问题？
忘记使用的版本：
- cxf.version:2.3.6
- eclipselink:2.3.0
- jaxb-impl-2.1.13.jar （包含 Lister.class 的 jar 正在执行获取正确类型的实际工作。）
I have this problem trying to unmarshall json from rest webservice (cxf).
I'm using JAXB and EclipseLink.
The entity is mapped like that:
@Entity
@Table(name = "service_pkg_service", schema = "MD")
@XmlRootElement
@XmlAccessorType(XmlAccessType.FIELD)
public class ServicePkgService extends DatabaseModel implements java.io.Serializable {
@Transient
@XmlIDREF
private Set<ChannelPkgService> channelPkgServices = new HashSet<ChannelPkgService>();
}
@Entity
@Table(name = "channel_pkg_service", schema = "MD")
@XmlAccessorType(XmlAccessType.FIELD)
@XmlRootElement
public class ChannelPkgService extends DatabaseModel implements java.io.Serializable{
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "CHANNEL_PKG_ID")
@XmlID
@XmlAttribute
private String id;
}
I have a class extending IDResolver, so I can generate an entity based on its ID.
public class EntityIDResolver extends IDResolver{
@Override
public void bind(String id, Object obj) throws SAXException {
}
@SuppressWarnings({ "rawtypes", "unchecked" })
@Override
public Callable<?> resolve(final String id, Class targetType) throws SAXException {
}
}
I have problem unmarshalling json like this "channelPkgService": [1,2,3], the class of targetType is java.lang.Object
I read this https://github.com/javaee/jaxb-v2/issues/546 , and created a wrapper to handle this.
public class ChannelPkgServiceWrapper extends HashSet<ChannelPkgService>{
}
Sinse I have a lot of these cases and I don't want to create a lot of wrappers, is there a more generic way to handle that?
Forget the used versions:
- cxf.version:2.3.6
- eclipselink:2.3.0
- jaxb-impl-2.1.13.jar
(jar containing Lister.class that is doing the actual work for getting the correct type.)
如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱，如果其他用户或者作者回复了您的评论，将不能在第一时间通知您！
发布评论
评论（1）
JAXB 使用
@XmlIDREF来映射文档内引用。 ID 引用的每个对象还必须嵌套在 XML 或 JSON 文档中的某个位置：如果您正在寻找要将对象编组为其 ID，那么您将需要使用
XmlAdapter。查看我对类似问题的回答：另请注意，JAXB 是一个规范（JSR-222) 和 EclipseLink 包含 MOXy 实施（我是 MOXy 技术负责人）。这意味着您可以从依赖项中消除 jaxb-impl-2.1.13.jar：
@XmlIDREFis used by JAXB to map intra-document references. Each object referenced by ID must also appear nested somewhere in the XML or JSON document:If you are looking to marshal an object as its ID, then you will want to use an
XmlAdapter. Check out my answer to a similar question:Also note that JAXB is a specification (JSR-222), and EclipseLink contains the MOXy implementation (I'm the MOXy tech lead). This means you could eliminate jaxb-impl-2.1.13.jar from your dependencies: