如何将JSON请求发布到Jersey REST服务？

时间：2012-03-15 15:23:20

标签： jersey eclipselink jax-rs moxy

我可以成功地将XML数据发布到我的服务，但是，尝试使用JSON执行相同操作失败了。 POJO是：

@XmlRootElement
public class Address {
    String city;
    String zip;
    //Getters & setters...
}

服务资源是：

@POST
@Produces("application/json")
public Address fix(Address a) {
    return a;
}

我正在按照以下方式进行POST：

POST /AcmeWeb/svc/simple HTTP/1.1
Content-Length: 30
Content-Type: application/json; charset=UTF-8

{"city":"Miami","zip":"33130"}

服务器正在响应400 Bad Request。我搜索了互联网，但没有找到发布JSON的好例子。任何帮助表示赞赏。感谢。

2 个答案:

答案 0 :(得分：4)

将@Consumes("application/json")注释添加到fix()方法。

更新：这对我有用：

资源方法：

@POST
@Produces("application/json")
@Consumes("application/json")
public Address post(Address addr) {
    return addr;
}

地址类：

@XmlRootElement
public class Address {
    public String city;
    public String zip;
}

这是我发送的请求：

Accept  application/json
Content-Type    application/json; charset=UTF-8

{"city":"Miami","zip":"33130"}

这是我得到的答案：

{"city":"Miami","zip":"33130"}

答案 1 :(得分：1)

WLS发行版中捆绑的EclipseLink模块（Eclipse Persistence Services - 2.3.2.v20111125-r10461）似乎存在问题：

javax.ws.rs.WebApplicationException: javax.xml.bind.UnmarshalException
 - with linked exception:
[Exception [EclipseLink-25004] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.XMLMarshalException
Exception Description: An error occurred unmarshalling the document
Internal Exception: java.util.NoSuchElementException]
    at com.sun.jersey.core.provider.jaxb.AbstractRootElementProvider.readFrom(AbstractRootElementProvider.java:113)
    at com.sun.jersey.spi.container.ContainerRequest.getEntity(ContainerRequest.java:474)
    at com.sun.jersey.server.impl.model.method.dispatch.EntityParamDispatchProvider$EntityInjectable.getValue(EntityParamDispatchProvider.java:123)
    at com.sun.jersey.server.impl.inject.InjectableValuesProvider.getInjectableValues(InjectableValuesProvider.java:46)
    at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$EntityParamInInvoker.getParams(AbstractResourceMethodDispatchProvider.java:153)
    at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$TypeOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:183)
    at com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)
    at com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:288)
    at com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)
    at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
    at com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)
    at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1469)
    at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1400)
    at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1349)
    at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1339)
    at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416)
    at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:537)
    at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:699)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:844)
    at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:242)
    at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:216)
    at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:132)
    at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:352)
    at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:235)
    at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3284)
    at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3254)
    at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
    at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)
    at weblogic.servlet.provider.WlsSubjectHandle.run(WlsSubjectHandle.java:57)
    at weblogic.servlet.internal.WebAppServletContext.doSecuredExecute(WebAppServletContext.java:2163)
    at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2089)
    at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2074)
    at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1512)
    at weblogic.servlet.provider.ContainerSupportProviderImpl$WlsRequestExecutor.run(ContainerSupportProviderImpl.java:254)
    at weblogic.work.ExecuteThread.execute(ExecuteThread.java:256)
    at weblogic.work.ExecuteThread.run(ExecuteThread.java:221)
Caused by: javax.xml.bind.UnmarshalException
 - with linked exception:
[Exception [EclipseLink-25004] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.XMLMarshalException
Exception Description: An error occurred unmarshalling the document
Internal Exception: java.util.NoSuchElementException]
    at org.eclipse.persistence.jaxb.JAXBUnmarshaller.handleXMLMarshalException(JAXBUnmarshaller.java:827)
    at org.eclipse.persistence.jaxb.JAXBUnmarshaller.unmarshal(JAXBUnmarshaller.java:407)
    at com.sun.jersey.json.impl.BaseJSONUnmarshaller.unmarshalJAXBElementFromJSON(BaseJSONUnmarshaller.java:108)
    at com.sun.jersey.json.impl.BaseJSONUnmarshaller.unmarshalFromJSON(BaseJSONUnmarshaller.java:97)
    at com.sun.jersey.json.impl.provider.entity.JSONRootElementProvider.readFrom(JSONRootElementProvider.java:125)
    at com.sun.jersey.core.provider.jaxb.AbstractRootElementProvider.readFrom(AbstractRootElementProvider.java:111)
    ... 35 more
Caused by: Exception [EclipseLink-25004] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.XMLMarshalException
Exception Description: An error occurred unmarshalling the document
Internal Exception: java.util.NoSuchElementException
    at org.eclipse.persistence.exceptions.XMLMarshalException.unmarshalException(XMLMarshalException.java:95)
    at org.eclipse.persistence.internal.oxm.record.SAXUnmarshaller.convertSAXException(SAXUnmarshaller.java:842)
    at org.eclipse.persistence.internal.oxm.record.SAXUnmarshaller.unmarshal(SAXUnmarshaller.java:830)
    at org.eclipse.persistence.oxm.XMLUnmarshaller.unmarshal(XMLUnmarshaller.java:602)
    at org.eclipse.persistence.jaxb.JAXBUnmarshaller.unmarshal(JAXBUnmarshaller.java:399)
    ... 39 more
Caused by: java.util.NoSuchElementException
    at com.sun.jersey.json.impl.reader.JsonReaderXmlEvent.getAttributeValue(JsonReaderXmlEvent.java:147)
    at com.sun.jersey.json.impl.reader.JsonXmlStreamReader.getAttributeValue(JsonXmlStreamReader.java:655)
    at org.eclipse.persistence.internal.oxm.record.XMLStreamReaderReader$IndexedAttributeList.getValue(XMLStreamReaderReader.java:312)
    at org.eclipse.persistence.oxm.record.UnmarshalRecord.startElement(UnmarshalRecord.java:648)
    at org.eclipse.persistence.internal.oxm.record.XMLStreamReaderReader.parseEvent(XMLStreamReaderReader.java:108)
    at org.eclipse.persistence.internal.oxm.record.XMLStreamReaderReader.parse(XMLStreamReaderReader.java:81)
    at org.eclipse.persistence.internal.oxm.record.XMLStreamReaderReader.parse(XMLStreamReaderReader.java:71)
    at org.eclipse.persistence.internal.oxm.record.SAXUnmarshaller.unmarshal(SAXUnmarshaller.java:818)
    ... 41 more

作为一种解决方法，您可以在包中包含JAXB类（例如地址）的jaxb.properties文件中包含以下内容：

javax.xml.bind.context.factory=com.sun.xml.bind.v2.ContextFactory

这应该告诉WLS使用来自JAXB RI的JAXBContext类的实例（它也存在于WLS 12c中）而不是来自EclipseLink的实例。请记住，这只是一种解决方法。

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