无法使用Jersey分析RESTful应用程序中的日期

Question

我使用RESTful应用程序来接受并保存日期。当我用以下JSON {“date”：“1997-07-16T19：20：30 + 01：00”，“count”：1}调用它时，出现下面列出的错误。没有日期，它运作良好。我使用jersey.version 2.5.1和eclipselink.version 2.5.2-M1。我该如何解决？

资源

@POST 
@Path(value = "/") 
@Consumes(MediaType.APPLICATION_JSON) 
public Response saveDate(DateMapper date) { 
    dateService.save(date); 
    return Response.status(Response.Status.OK).entity("Date has been successfully saved").type(MediaType.APPLICATION_JSON).build(); 
} 

DateMapper

@XmlRootElement(name = "date") 
public class DateMapper { 
    private Date date; 
    private int count; 
    //getters and setters 
} 

错误

16:36:34,123 SEVERE [com.sun.jersey.spi.container.ContainerResponse] (default task-6) Mapped exception to response: 500 (Internal Server Error): javax.ws.rs.WebApplicationException: HTTP 500 Internal Server Error 
at com.owlike.genson.ext.jaxrs.GensonJsonConverter.readFrom(GensonJsonConverter.java:127) [genson-0.98.jar:] 
at com.sun.jersey.spi.container.ContainerRequest.getEntity(ContainerRequest.java:488) [jersey-bundle-1.14.jar:1.14] 
at com.sun.jersey.server.impl.model.method.dispatch.EntityParamDispatchProvider$EntityInjectable.getValue(EntityParamDispatchProvider.java:123) [jersey-bundle-1.14.jar:1.14] 
at com.sun.jersey.server.impl.inject.InjectableValuesProvider.getInjectableValues(InjectableValuesProvider.java:46) [jersey-bundle-1.14.jar:1.14] 
at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$EntityParamInInvoker.getParams(AbstractResourceMethodDispatchProvider.java:153) [jersey-bundle-1.14.jar:1.14] 
at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$ResponseOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:203) [jersey-bundle-1.14.jar:1.14] 
at com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75) [jersey-bundle-1.14.jar:1.14] 
at com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:302) [jersey-bundle-1.14.jar:1.14] 
at com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108) [jersey-bundle-1.14.jar:1.14] 
at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147) [jersey-bundle-1.14.jar:1.14] 
at com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84) [jersey-bundle-1.14.jar:1.14] 
at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1480) [jersey-bundle-1.14.jar:1.14] 
at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1411) [jersey-bundle-1.14.jar:1.14] 
at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1360) [jersey-bundle-1.14.jar:1.14] 
at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1350) [jersey-bundle-1.14.jar:1.14] 
at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416) [jersey-bundle-1.14.jar:1.14] 
at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:538) [jersey-bundle-1.14.jar:1.14] 
at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:716) [jersey-bundle-1.14.jar:1.14] 
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) [jboss-servlet-api_3.1_spec-1.0.0.Final.jar:1.0.0.Final] 
at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final] 
at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:61) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final] 
at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final] 
at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78) 
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.0.Final.jar:1.0.0.Final] 
at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:113) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final] 
at io.undertow.security.handlers.AuthenticationCallHandler.handleRequest(AuthenticationCallHandler.java:52) [undertow-core-1.0.0.Final.jar:1.0.0.Final] 
at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:45) [undertow-core-1.0.0.Final.jar:1.0.0.Final] 
at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:61) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final] 
at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:70) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final] 
at io.undertow.security.handlers.SecurityInitialHandler.handleRequest(SecurityInitialHandler.java:76) [undertow-core-1.0.0.Final.jar:1.0.0.Final] 
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.0.Final.jar:1.0.0.Final] 
at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61) 
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.0.Final.jar:1.0.0.Final] 
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.0.Final.jar:1.0.0.Final] 
at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:240) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final] 
at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:227) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final] 
at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:73) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final] 
at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:146) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final] 
at io.undertow.server.Connectors.executeRootHandler(Connectors.java:168) [undertow-core-1.0.0.Final.jar:1.0.0.Final] 
at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:687) [undertow-core-1.0.0.Final.jar:1.0.0.Final] 
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [rt.jar:1.8.0_25] 
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [rt.jar:1.8.0_25] 
at java.lang.Thread.run(Thread.java:745) [rt.jar:1.8.0_25] 
Caused by: com.owlike.genson.TransformationException: Could not deserialize to property 'date' of class class au.com.example.mapper.DataMapper 
at com.owlike.genson.reflect.PropertyMutator.couldNotDeserialize(PropertyMutator.java:56) [genson-0.98.jar:] 
at com.owlike.genson.reflect.PropertyMutator.deserialize(PropertyMutator.java:39) [genson-0.98.jar:] 
at com.owlike.genson.reflect.BeanDescriptor.deserialize(BeanDescriptor.java:116) [genson-0.98.jar:] 
at com.owlike.genson.reflect.BeanDescriptor.deserialize(BeanDescriptor.java:98) [genson-0.98.jar:] 
at com.owlike.genson.convert.BeanViewConverter.deserialize(BeanViewConverter.java:109) [genson-0.98.jar:] 
at com.owlike.genson.convert.NullConverter$NullConverterWrapper.deserialize(NullConverter.java:61) [genson-0.98.jar:] 
at com.owlike.genson.Genson.deserialize(Genson.java:452) [genson-0.98.jar:] 
at com.owlike.genson.ext.jaxrs.GensonJsonConverter.readFrom(GensonJsonConverter.java:125) [genson-0.98.jar:] 
... 42 more 
Caused by: com.owlike.genson.TransformationException: Could not parse date 2009-11-13T10:39:35Z 
at com.owlike.genson.convert.DefaultConverters$DateConverter.deserialize(DefaultConverters.java:824) [genson-0.98.jar:] 
at com.owlike.genson.convert.DefaultConverters$DateConverter.deserialize(DefaultConverters.java:788) [genson-0.98.jar:] 
at com.owlike.genson.convert.NullConverter$NullConverterWrapper.deserialize(NullConverter.java:61) [genson-0.98.jar:] 
at com.owlike.genson.reflect.PropertyMutator.deserialize(PropertyMutator.java:37) [genson-0.98.jar:] 
... 48 more 
Caused by: java.text.ParseException: Unparseable date: "2009-11-13T10:39:35Z" 
at java.text.DateFormat.parse(DateFormat.java:366) [rt.jar:1.8.0_25] 
at com.owlike.genson.convert.DefaultConverters$DateConverter.read(DefaultConverters.java:830) [genson-0.98.jar:] 
at com.owlike.genson.convert.DefaultConverters$DateConverter.deserialize(DefaultConverters.java:822) [genson-0.98.jar:] 
... 51 more 

Answer 1

这里的问题是，在服务器上使用反序列化的日期格式不匹配您所使用的格式在你的json中。

您需要配置用于Genson的日期格式。 见this answer。另请参阅the Genson documentation以了解如何提供自定义的Genson实例。

总体代码应该是类似的东西（的最新Genson 1.1版）：

@Provider 
public class GensonProvider implements ContextResolver<Genson> { 
    private final Genson genson = new GensonBuilder().useDateFormat(yourDateFormat).create(); 

    @Override 
    public Genson getContext(Class<?> type) { 
    return genson; 
    } 
}