我试图将spring-data-mongodb与spring-hateoas一起使用,并通过测试获得javax.xml.bind.MarshalException异常.我该如何解决这个问题？我缺少注释或其他步骤吗？
我的pom：
我的“UserResourceAssembler.java”：
@Componentclass UserResourceAssembler implements ResourceAssembler我的“User.java”代表一个mongodb文档：
@document@XmlRootElement(name="user")public class User { @ID private String ID; private String occupation; public User() {} public User(String occupation) { this.occupation = occupation; } @OverrIDe public String toString() {return String.format( "{ID:%s,occupation='%s'}",ttID,occupation); }}
我的“UserController.java”：
@RestController@ExposesResourceFor(User.class)@RequestMapPing(value = "/users")public class UserController { @autowired UserResourceAssembler userResourceAssembler; @RequestMapPing(method = RequestMethod.GET,value = "/name/{user}") Resource
在我的Application.java中,我包含以下注释：
@EnableHypermediaSupport(type = EnableHypermediaSupport.HypermediaType.HAL)
我的问题是我访问时遇到错误的原因：
http://localhost:8080/users/name/doesnotmatterrightNow
基于错误消息的问题是与行：
return userResourceAssembler.toResource(new User("Teenager"));
以下是完整错误：
http Status 500 - Could not marshal [Resource { content: {ID:null,occupation='Teenager'},links: [] }]: null; nested exception is javax.xml.bind.MarshalExceptiontype Exception reportmessage Could not marshal [Resource { content: {ID:null,links: [] }]: null; nested exception is javax.xml.bind.MarshalExceptiondescription The server encountered an internal error that prevented it from fulfilling this request.exceptionorg.springframework.http.converter.httpMessageNotWritableException: Could not marshal [Resource { content: {ID:null,links: [] }]: null; nested exception is javax.xml.bind.MarshalException - with linked exception:[com.sun.istack.internal.SAXException2: class sample.User nor any of its super class is kNown to this context.javax.xml.bind.JAXBException: class sample.User nor any of its super class is kNown to this context.] org.springframework.http.converter.xml.Jaxb2RootElementhttpMessageConverter.writetoResult(Jaxb2RootElementhttpMessageConverter.java:138) org.springframework.http.converter.xml.AbstractXmlhttpMessageConverter.writeInternal(AbstractXmlhttpMessageConverter.java:66) org.springframework.http.converter.AbstracthttpMessageConverter.write(AbstracthttpMessageConverter.java:207) org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:148) org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:90) org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor.handleReturnValue(RequestResponseBodyMethodProcessor.java:193) org.springframework.web.method.support.HandlerMethodReturnValueHandlerComposite.handleReturnValue(HandlerMethodReturnValueHandlerComposite.java:71) org.springframework.web.servlet.mvc.method.annotation.ServletinvocableHandlerMethod.invokeAndHandle(ServletinvocableHandlerMethod.java:122) org.springframework.web.servlet.mvc.method.annotation.RequestMapPingHandlerAdapter.invokeHandleMethod(RequestMapPingHandlerAdapter.java:749) org.springframework.web.servlet.mvc.method.annotation.RequestMapPingHandlerAdapter.handleInternal(RequestMapPingHandlerAdapter.java:689) org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:83) org.springframework.web.servlet.dispatcherServlet.dodispatch(dispatcherServlet.java:938) org.springframework.web.servlet.dispatcherServlet.doService(dispatcherServlet.java:870) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961) org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:852) javax.servlet.http.httpServlet.service(httpServlet.java:620) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837) javax.servlet.http.httpServlet.service(httpServlet.java:727) org.springframework.web.filter.HIDdenhttpMethodFilter.doFilterInternal(HIDdenhttpMethodFilter.java:77) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:108)root causejavax.xml.bind.MarshalException - with linked exception:[com.sun.istack.internal.SAXException2: class sample.User nor any of its super class is kNown to this context.javax.xml.bind.JAXBException: class sample.User nor any of its super class is kNown to this context.] com.sun.xml.internal.bind.v2.runtime.MarshallerImpl.write(MarshallerImpl.java:311) com.sun.xml.internal.bind.v2.runtime.MarshallerImpl.marshal(MarshallerImpl.java:236) org.springframework.http.converter.xml.Jaxb2RootElementhttpMessageConverter.writetoResult(Jaxb2RootElementhttpMessageConverter.java:135) org.springframework.http.converter.xml.AbstractXmlhttpMessageConverter.writeInternal(AbstractXmlhttpMessageConverter.java:66) org.springframework.http.converter.AbstracthttpMessageConverter.write(AbstracthttpMessageConverter.java:207) org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:148) org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:90) org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor.handleReturnValue(RequestResponseBodyMethodProcessor.java:193) org.springframework.web.method.support.HandlerMethodReturnValueHandlerComposite.handleReturnValue(HandlerMethodReturnValueHandlerComposite.java:71) org.springframework.web.servlet.mvc.method.annotation.ServletinvocableHandlerMethod.invokeAndHandle(ServletinvocableHandlerMethod.java:122) org.springframework.web.servlet.mvc.method.annotation.RequestMapPingHandlerAdapter.invokeHandleMethod(RequestMapPingHandlerAdapter.java:749) org.springframework.web.servlet.mvc.method.annotation.RequestMapPingHandlerAdapter.handleInternal(RequestMapPingHandlerAdapter.java:689) org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:83) org.springframework.web.servlet.dispatcherServlet.dodispatch(dispatcherServlet.java:938) org.springframework.web.servlet.dispatcherServlet.doService(dispatcherServlet.java:870) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961) org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:852) javax.servlet.http.httpServlet.service(httpServlet.java:620) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837) javax.servlet.http.httpServlet.service(httpServlet.java:727) org.springframework.web.filter.HIDdenhttpMethodFilter.doFilterInternal(HIDdenhttpMethodFilter.java:77) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:108)root causecom.sun.istack.internal.SAXException2: class sample.User nor any of its super class is kNown to this context.javax.xml.bind.JAXBException: class sample.User nor any of its super class is kNown to this context. com.sun.xml.internal.bind.v2.runtime.XMLSerializer.reportError(XMLSerializer.java:235) com.sun.xml.internal.bind.v2.runtime.XMLSerializer.reportError(XMLSerializer.java:250) com.sun.xml.internal.bind.v2.runtime.property.SingleReferenceNodeProperty.serializeBody(SingleReferenceNodeProperty.java:102) com.sun.xml.internal.bind.v2.runtime.ClassBeanInfoImpl.serializeBody(ClassBeanInfoImpl.java:343) com.sun.xml.internal.bind.v2.runtime.XMLSerializer.childAsSoleContent(XMLSerializer.java:582) com.sun.xml.internal.bind.v2.runtime.ClassBeanInfoImpl.serializeRoot(ClassBeanInfoImpl.java:325) com.sun.xml.internal.bind.v2.runtime.XMLSerializer.childAsRoot(XMLSerializer.java:483) com.sun.xml.internal.bind.v2.runtime.MarshallerImpl.write(MarshallerImpl.java:308) com.sun.xml.internal.bind.v2.runtime.MarshallerImpl.marshal(MarshallerImpl.java:236) org.springframework.http.converter.xml.Jaxb2RootElementhttpMessageConverter.writetoResult(Jaxb2RootElementhttpMessageConverter.java:135) org.springframework.http.converter.xml.AbstractXmlhttpMessageConverter.writeInternal(AbstractXmlhttpMessageConverter.java:66) org.springframework.http.converter.AbstracthttpMessageConverter.write(AbstracthttpMessageConverter.java:207) org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:148) org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:90) org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor.handleReturnValue(RequestResponseBodyMethodProcessor.java:193) org.springframework.web.method.support.HandlerMethodReturnValueHandlerComposite.handleReturnValue(HandlerMethodReturnValueHandlerComposite.java:71) org.springframework.web.servlet.mvc.method.annotation.ServletinvocableHandlerMethod.invokeAndHandle(ServletinvocableHandlerMethod.java:122) org.springframework.web.servlet.mvc.method.annotation.RequestMapPingHandlerAdapter.invokeHandleMethod(RequestMapPingHandlerAdapter.java:749) org.springframework.web.servlet.mvc.method.annotation.RequestMapPingHandlerAdapter.handleInternal(RequestMapPingHandlerAdapter.java:689) org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:83) org.springframework.web.servlet.dispatcherServlet.dodispatch(dispatcherServlet.java:938) org.springframework.web.servlet.dispatcherServlet.doService(dispatcherServlet.java:870) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961) org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:852) javax.servlet.http.httpServlet.service(httpServlet.java:620) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837) javax.servlet.http.httpServlet.service(httpServlet.java:727) org.springframework.web.filter.HIDdenhttpMethodFilter.doFilterInternal(HIDdenhttpMethodFilter.java:77) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:108)root causejavax.xml.bind.JAXBException: class sample.User nor any of its super class is kNown to this context. com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.getBeanInfo(JAXBContextImpl.java:572) com.sun.xml.internal.bind.v2.runtime.property.SingleReferenceNodeProperty.serializeBody(SingleReferenceNodeProperty.java:94) com.sun.xml.internal.bind.v2.runtime.ClassBeanInfoImpl.serializeBody(ClassBeanInfoImpl.java:343) com.sun.xml.internal.bind.v2.runtime.XMLSerializer.childAsSoleContent(XMLSerializer.java:582) com.sun.xml.internal.bind.v2.runtime.ClassBeanInfoImpl.serializeRoot(ClassBeanInfoImpl.java:325) com.sun.xml.internal.bind.v2.runtime.XMLSerializer.childAsRoot(XMLSerializer.java:483) com.sun.xml.internal.bind.v2.runtime.MarshallerImpl.write(MarshallerImpl.java:308) com.sun.xml.internal.bind.v2.runtime.MarshallerImpl.marshal(MarshallerImpl.java:236) org.springframework.http.converter.xml.Jaxb2RootElementhttpMessageConverter.writetoResult(Jaxb2RootElementhttpMessageConverter.java:135) org.springframework.http.converter.xml.AbstractXmlhttpMessageConverter.writeInternal(AbstractXmlhttpMessageConverter.java:66) org.springframework.http.converter.AbstracthttpMessageConverter.write(AbstracthttpMessageConverter.java:207) org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:148) org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:90) org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor.handleReturnValue(RequestResponseBodyMethodProcessor.java:193) org.springframework.web.method.support.HandlerMethodReturnValueHandlerComposite.handleReturnValue(HandlerMethodReturnValueHandlerComposite.java:71) org.springframework.web.servlet.mvc.method.annotation.ServletinvocableHandlerMethod.invokeAndHandle(ServletinvocableHandlerMethod.java:122) org.springframework.web.servlet.mvc.method.annotation.RequestMapPingHandlerAdapter.invokeHandleMethod(RequestMapPingHandlerAdapter.java:749) org.springframework.web.servlet.mvc.method.annotation.RequestMapPingHandlerAdapter.handleInternal(RequestMapPingHandlerAdapter.java:689) org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:83) org.springframework.web.servlet.dispatcherServlet.dodispatch(dispatcherServlet.java:938) org.springframework.web.servlet.dispatcherServlet.doService(dispatcherServlet.java:870) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961) org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:852) javax.servlet.http.httpServlet.service(httpServlet.java:620) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837) javax.servlet.http.httpServlet.service(httpServlet.java:727) org.springframework.web.filter.HIDdenhttpMethodFilter.doFilterInternal(HIDdenhttpMethodFilter.java:77) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:108)
最佳答案只需将produce = MediaType.APPliCATION_JsON_VALUE添加到@RequestMapPing 总结 以上是内存溢出为你收集整理的java – 为什么下面的Spring Boot HATEOAS与mongodb不起作用(MarshalException)？全部内容，希望文章能够帮你解决java – 为什么下面的Spring Boot HATEOAS与mongodb不起作用(MarshalException)？所遇到的程序开发问题。
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