Jersey：注入在资源方法中工作，但不能用于EJB属性

Question

我有一个自定义的InjectionProvider，它从SecurityContext中检索User对象并使其可用。自定义ResourceFilter执行HTTP基本身份验证，创建SecurityContext并使用Principal来填充它。这是基于this suggestion。

当我从一个资源的方法访问它，它按预期工作：

@Stateless 
@Path("foo") 
public class FooResource { 

    @GET 
    @ResourceFilters(value = {UserAuthenticationFilter.class}) 
    public Response get(@Context User user) { 
    return Response.ok().entity(user).build(); 
    } 
} 

然而，当我尝试注入的对象作为一个属性/字段添加到EJB，异常抛出，即使我可以在日志中看到，InjectionProvider被调用：

@Stateless 
@Path("foo") 
public class FooResource { 

    @Context 
    private User user; 

    @GET 
    @ResourceFilters(value = {UserAuthenticationFilter.class}) 
    public Response get() { 
    return Response.ok().entity(user).build(); 
    } 
} 

唯一的例外是奇怪：

 
[#|2011-10-31T13:35:47.691+0000|WARNING|glassfish3.1.1|javax.enterprise.system.container.web.com.sun.enterprise.web|_ThreadID=18;_ThreadName=Thread-3;|StandardWrapperValve[Gateway Servlet]: PWC1406: Servlet.service() for servlet Gateway Servlet threw exception 
javax.ejb.CreateException: Could not create stateless EJB 
    at com.sun.ejb.containers.StatelessSessionContainer.createStatelessEJB(StatelessSessionContainer.java:534) 
    at com.sun.ejb.containers.StatelessSessionContainer.access$000(StatelessSessionContainer.java:95) 
    at com.sun.ejb.containers.StatelessSessionContainer$SessionContextFactory.create(StatelessSessionContainer.java:724) 
    at com.sun.ejb.containers.util.pool.NonBlockingPool.getObject(NonBlockingPool.java:247) 
    at com.sun.ejb.containers.StatelessSessionContainer._getContext(StatelessSessionContainer.java:449) 
    at com.sun.ejb.containers.BaseContainer.getContext(BaseContainer.java:2528) 
    at com.sun.ejb.containers.BaseContainer.preInvoke(BaseContainer.java:1895) 
    at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:212) 
    at com.sun.ejb.containers.EJBLocalObjectInvocationHandlerDelegate.invoke(EJBLocalObjectInvocationHandlerDelegate.java:88) 
    at $Proxy166.get(Unknown Source) 
.... 
Caused by: com.sun.jersey.spi.inject.Errors$ErrorMessagesException 
    at com.sun.jersey.spi.inject.Errors.processErrorMessages(Errors.java:170) 
    at com.sun.jersey.spi.inject.Errors.postProcess(Errors.java:136) 
    at com.sun.jersey.spi.inject.Errors.processWithErrors(Errors.java:199) 
    at com.sun.jersey.server.impl.application.WebApplicationImpl$ComponentProcessorFactoryImpl.get(WebApplicationImpl.java:499) 
    at com.sun.jersey.server.impl.ejb.EJBInjectionInterceptor.get(EJBInjectionInterceptor.java:104) 
    at com.sun.jersey.server.impl.ejb.EJBInjectionInterceptor.init(EJBInjectionInterceptor.java:71) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
    at java.lang.reflect.Method.invoke(Method.java:597) 
    at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.doCallback(SystemInterceptorProxy.java:133) 
    at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.init(SystemInterceptorProxy.java:120) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
    at java.lang.reflect.Method.invoke(Method.java:597) 
    at com.sun.ejb.containers.interceptors.CallbackInterceptor.intercept(InterceptorManager.java:964) 
    at com.sun.ejb.containers.interceptors.CallbackChainImpl.invokeNext(CallbackChainImpl.java:65) 
    at com.sun.ejb.containers.interceptors.InterceptorManager.intercept(InterceptorManager.java:393) 
    at com.sun.ejb.containers.interceptors.InterceptorManager.intercept(InterceptorManager.java:376) 
    at com.sun.ejb.containers.StatelessSessionContainer.createStatelessEJB(StatelessSessionContainer.java:526) 
    ... 55 more 

我在做什么错？

编辑：我只注意到抛出异常之前，错误报告在server.log：

 
[#|2011-10-31T15:33:01.854+0000|SEVERE|glassfish3.1.1|com.sun.jersey.spi.inject.Errors|_ThreadID=18;_ThreadName=Thread-3;|The following errors and warnings have been detected with resource and/or provider classes: 
    SEVERE: Missing dependency for field: private com.skalio.bonusapp.core.User com.skalio.bonusapp.gateway.FooResource.user|#] 

Answer 1

这是由于范围不匹配。您正试图将一个请求范围的东西注入到一个没有请求作用域的bean中。这是行不通的。