JPA字段名称大小写与JSON字段名称不匹配

我是JPA的新手，正在尝试将JSON字符串传递到由JPA实体支持的Web服务。但是，我很难弄清大小写/命名约定。以下是我实体中的结构，但是当我传递JSON语句时，它想要“ userId”和“ enrollmentstatus”（注意大小写差异），否则会生成有关“无法识别的字段'enrollmentStatus'”的错误。对于一个，它坚持使用camelCase，对于另一个领域，则坚持使用小写字母。似乎不一致。我在这里想念或误解了什么？先感谢您。

@Basic(optional = false)
@NotNull
@Column(name = "USERID")
private long userid;

@Basic(optional = false)
@NotNull
@Size(min = 1, max = 1)
@Column(name = "ENROLLMENTSTATUS")
private String enrollmentstatus;

错误消息如下：

javax.servlet.ServletException: org.glassfish.jersey.server.ContainerException: org.codehaus.jackson.map.exc.UnrecognizedPropertyException: Unrecognized field "enrollmentStatus" (Class entities.LearningActivity), not marked as ignorable
 at [Source: org.glassfish.jersey.message.internal.EntityInputStream@344a5b; line: 1, column: 75] (through reference chain: entities.LearningActivity["enrollmentStatus"])

root cause

org.glassfish.jersey.server.ContainerException: org.codehaus.jackson.map.exc.UnrecognizedPropertyException: Unrecognized field "enrollmentStatus" (Class entities.LearningActivity), not marked as ignorable
 at [Source: org.glassfish.jersey.message.internal.EntityInputStream@344a5b; line: 1, column: 75] (through reference chain: entities.LearningActivity["enrollmentStatus"])

JSON字符串：

{“ mobile”：0，“ userId”：12345，“ learngingActivityId”：134，“ enrollmentStatus”：“ C”，“ dateTimeEnrolled”：“ 2014-03-20T00：08：30.18375Z”，“ dateTimeCompleted”：“ 2014 -03-20T00：08：30.18375Z“，”小时已花费“：0.0，”分数“：13.0，”已通过“：false，”教师备注“：” u0000“，” studentComments“：” u0000“，” internalData“：” u0000“}

实体外观代码：

@POST
@Override
@Consumes({"application/xml", "application/json"})
@Path("add")
public void create(LearningActivity entity) {
    super.create(entity);
}

日志文件：

[2014-03-20T08:01:51.777-0700] [glassfish 4.0] [FINE] [] [org.glassfish.jersey.server.wadl.internal.generators.WadlGeneratorJAXBGrammarGenerator] [tid: _ThreadID=111 _ThreadName=http-listener-1(3)] [timeMillis: 1395327711777] [levelValue: 500] [CLASSNAME: org.glassfish.jersey.server.wadl.internal.generators.WadlGeneratorJAXBGrammarGenerator$6] [METHODNAME: resolve] [[

java.lang.InstantiationException
    at sun.reflect.InstantiationExceptionConstructorAccessorImpl.newInstance(InstantiationExceptionConstructorAccessorImpl.java:48)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
    at org.glassfish.jersey.server.wadl.internal.generators.WadlGeneratorJAXBGrammarGenerator$6.resolve(WadlGeneratorJAXBGrammarGenerator.java:420)
    at org.glassfish.jersey.server.wadl.WadlGenerator$ExternalGrammarDefinition.resolve(WadlGenerator.java:179)
    at org.glassfish.jersey.server.wadl.internal.ApplicationDescription.resolve(ApplicationDescription.java:82)
    at org.glassfish.jersey.server.wadl.internal.generators.WadlGeneratorJAXBGrammarGenerator.attachTypes(WadlGeneratorJAXBGrammarGenerator.java:481)
    at org.glassfish.jersey.server.wadl.internal.WadlBuilder.generate(WadlBuilder.java:149)
    at org.glassfish.jersey.server.wadl.internal.WadlApplicationContextImpl.getApplication(WadlApplicationContextImpl.java:153)
    at org.glassfish.jersey.server.wadl.processor.WadlModelProcessor$OptionsHandler.apply(WadlModelProcessor.java:134)
    at org.glassfish.jersey.server.wadl.processor.WadlModelProcessor$OptionsHandler.apply(WadlModelProcessor.java:118)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory$1.invoke(ResourceMethodInvocationHandlerFactory.java:81)
    at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:125)
    at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$ObjectOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:167)
    at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:91)
    at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:346)
    at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:341)
    at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:101)
    at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:224)
    at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
    at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
    at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
    at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
    at org.glassfish.jersey.internal.Errors.process(Errors.java:267)
    at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317)
    at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:198)
    at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:946)
    at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:323)
    at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:372)
    at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:335)
    at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:218)
    at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:344)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
    at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:316)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160)
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673)
    at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174)
    at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:357)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:260)
    at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:188)
    at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:191)
    at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:168)
    at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:189)
    at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:288)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:206)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:136)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:114)
    at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
    at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:838)
    at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:113)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:115)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:55)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:135)
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:564)
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:544)
    at java.lang.Thread.run(Thread.java:724)
]]

[2014-03-20T08:01:51.779-0700] [glassfish 4.0] [FINE] [] [org.glassfish.jersey.server.wadl.internal.generators.WadlGeneratorJAXBGrammarGenerator] [tid: _ThreadID=111 _ThreadName=http-listener-1(3)] [timeMillis: 1395327711779] [levelValue: 500] [CLASSNAME: org.glassfish.jersey.server.wadl.internal.generators.WadlGeneratorJAXBGrammarGenerator] [METHODNAME: attachTypes] [[
  Couldn't find JAX-B element for class javax.ws.rs.core.Response]]