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我一直在調試很多很多小時，但我不明白爲什麼代碼不工作。 以相同方式註釋的兩個服務類顯示不同的攔截器行爲。Guice＆EJB注入（攔截器？）
堆棧跟蹤＃1：
Daemon Thread [http-thread-pool-8080(1)] (Suspended (breakpoint at line 120 in UserService))
UserService.saveUserOnLogin(UserBE) line: 120
NativeMethodAccessorImpl.invoke0(Method, Object, Object[]) line: not available [native method]
NativeMethodAccessorImpl.invoke(Object, Object[]) line: 57
DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 43
Method.invoke(Object, Object...) line: 601
EJBSecurityManager.runMethod(Method, Object, Object[]) line: 1052
EJBSecurityManager.invoke(Method, boolean, Object, Object[]) line: 1124
StatelessSessionContainer(BaseContainer).invokeBeanMethod(EjbInvocation) line: 5388
EjbInvocation.invokeBeanMethod() line: 619
AroundInvokeChainImpl.invokeNext(int, InterceptorManager$AroundInvokeContext) line: 800
EjbInvocation.proceed() line: 571
_GuiceInterceptor_Serializable(GuiceInterceptor).injectByGuice(InvocationContext) line: 24
NativeMethodAccessorImpl.invoke0(Method, Object, Object[]) line: not available [native method]
NativeMethodAccessorImpl.invoke(Object, Object[]) line: 57
DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 43
Method.invoke(Object, Object...) line: 601
AroundInvokeInterceptor.intercept(InterceptorManager$AroundInvokeContext) line: 861
AroundInvokeChainImpl.invokeNext(int, InterceptorManager$AroundInvokeContext) line: 800
EjbInvocation.proceed() line: 571
_SystemInterceptorProxy_Serializable(SystemInterceptorProxy).doAround(InvocationContext, Method) line: 162
_SystemInterceptorProxy_Serializable(SystemInterceptorProxy).aroundInvoke(InvocationContext) line: 144
NativeMethodAccessorImpl.invoke0(Method, Object, Object[]) line: not available [native method]
NativeMethodAccessorImpl.invoke(Object, Object[]) line: 57
DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 43
Method.invoke(Object, Object...) line: 601
AroundInvokeInterceptor.intercept(InterceptorManager$AroundInvokeContext) line: 861
AroundInvokeChainImpl.invokeNext(int, InterceptorManager$AroundInvokeContext) line: 800
InterceptorManager.intercept(InterceptorManager$InterceptorChain, InterceptorManager$AroundInvokeContext) line: 370
StatelessSessionContainer(BaseContainer).__intercept(EjbInvocation) line: 5360
StatelessSessionContainer(BaseContainer).intercept(EjbInvocation) line: 5348
EJBLocalObjectInvocationHandler.invoke(Class, Method, Object[]) line: 214
EJBLocalObjectInvocationHandlerDelegate.invoke(Object, Method, Object[]) line: 88
$Proxy209.saveUserOnLogin(UserBE) line: not available
__EJB31_Generated__UserService__Intf____Bean__.saveUserOnLogin(UserBE) line: not available
LoginUserHandler.saveUser(UserDTO) line: 165
LoginUserHandler.loginUser(UserDTO) line: 123
LoginUserHandler.loginWithOAuth(String, String, String, String) line: 158
LoginUserHandler.execute(LoginUser, ExecutionContext) line: 103
LoginUserHandler.execute(Action, ExecutionContext) line: 1
GuiceDispatch(AbstractDispatch).doExecute(A, ExecutionContext) line: 81
GuiceDispatch(AbstractDispatch).execute(A) line: 68
HupaDispatchServlet(AbstractSecureDispatchServlet).execute(String, Action<?>) line: 29
HupaDispatchServlet.execute(String, Action<?>) line: 56
NativeMethodAccessorImpl.invoke0(Method, Object, Object[]) line: not available [native method]
NativeMethodAccessorImpl.invoke(Object, Object[]) line: 57
DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 43
Method.invoke(Object, Object...) line: 601
RPC.invokeAndEncodeResponse(Object, Method, Object[], SerializationPolicy, int) line: 569
HupaDispatchServlet(RemoteServiceServlet).processCall(String) line: 208
HupaDispatchServlet(RemoteServiceServlet).processPost(HttpServletRequest, HttpServletResponse) line: 248
HupaDispatchServlet(AbstractRemoteServiceServlet).doPost(HttpServletRequest, HttpServletResponse) line: 62
HupaDispatchServlet(HttpServlet).service(HttpServletRequest, HttpServletResponse) line: 688
HupaDispatchServlet(HttpServlet).service(ServletRequest, ServletResponse) line: 770
ServletDefinition.doService(ServletRequest, ServletResponse) line: 263
ServletDefinition.service(ServletRequest, ServletResponse) line: 178
ManagedServletPipeline.service(ServletRequest, ServletResponse) line: 91
FilterChainInvocation.doFilter(ServletRequest, ServletResponse) line: 62
ManagedFilterPipeline.dispatch(ServletRequest, ServletResponse, FilterChain) line: 118
GuiceFilter.doFilter(ServletRequest, ServletResponse, FilterChain) line: 113
ApplicationFilterChain.internalDoFilter(ServletRequest, ServletResponse) line: 256
ApplicationFilterChain.doFilter(ServletRequest, ServletResponse) line: 217
StandardWrapperValve.invoke(Request, Response) line: 279
StandardContextValve.invoke(Request, Response) line: 175
StandardPipeline.doInvoke(Request, Response, boolean) line: 655
StandardPipeline.invoke(Request, Response) line: 595
StandardHostValve.invoke(Request, Response) line: 161
CoyoteAdapter.doService(Request, Request, Response, Response) line: 331
CoyoteAdapter.service(Request, Response) line: 231
ContainerMapper$AdapterCallable.call() line: 317
ContainerMapper.service(Request, Response) line: 195
ProcessorTask.invokeAdapter() line: 849
ProcessorTask.doProcess() line: 746
ProcessorTask.process(InputStream, OutputStream) line: 1045
DefaultProtocolFilter.execute(Context) line: 228
HttpProtocolChain(DefaultProtocolChain).executeProtocolFilter(Context, int) line: 137
HttpProtocolChain(DefaultProtocolChain).execute(Context, int) line: 104
HttpProtocolChain(DefaultProtocolChain).execute(Context) line: 90
HttpProtocolChain.execute(Context) line: 79
ProtocolChainContextTask.doCall() line: 54
ProtocolChainContextTask(SelectionKeyContextTask).call() line: 59
ProtocolChainContextTask(ContextTask).run() line: 71
FixedThreadPool$BasicWorker(AbstractThreadPool$Worker).doWork() line: 532
FixedThreadPool$BasicWorker(AbstractThreadPool$Worker).run() line: 513
HttpWorkerThread(Thread).run() line: 722
堆棧跟蹤＃2
Daemon Thread [http-thread-pool-8080(2)] (Suspended (entry into method synchronizeHeaders in MessageService))
__EJB31_Generated__MessageService__Intf____Bean__(MessageService).synchronizeHeaders(String) line: 93
FetchMessagesHandler.executeInternal(FetchMessages, ExecutionContext) line: 80
FetchMessagesHandler.executeInternal(Action, ExecutionContext) line: 1
FetchMessagesHandler(AbstractSessionHandler<A,R>).executeWithRetries(A, ExecutionContext, int) line: 127
FetchMessagesHandler(AbstractSessionHandler<A,R>).execute(A, ExecutionContext) line: 97
GuiceDispatch(AbstractDispatch).doExecute(A, ExecutionContext) line: 81
GuiceDispatch(AbstractDispatch).execute(A) line: 68
HupaDispatchServlet(AbstractSecureDispatchServlet).execute(String, Action<?>) line: 29
HupaDispatchServlet.execute(String, Action<?>) line: 56
NativeMethodAccessorImpl.invoke0(Method, Object, Object[]) line: not available [native method]
NativeMethodAccessorImpl.invoke(Object, Object[]) line: 57
DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 43
Method.invoke(Object, Object...) line: 601
RPC.invokeAndEncodeResponse(Object, Method, Object[], SerializationPolicy, int) line: 569
HupaDispatchServlet(RemoteServiceServlet).processCall(String) line: 208
HupaDispatchServlet(RemoteServiceServlet).processPost(HttpServletRequest, HttpServletResponse) line: 248
HupaDispatchServlet(AbstractRemoteServiceServlet).doPost(HttpServletRequest, HttpServletResponse) line: 62
HupaDispatchServlet(HttpServlet).service(HttpServletRequest, HttpServletResponse) line: 688
HupaDispatchServlet(HttpServlet).service(ServletRequest, ServletResponse) line: 770
ServletDefinition.doService(ServletRequest, ServletResponse) line: 263
ServletDefinition.service(ServletRequest, ServletResponse) line: 178
ManagedServletPipeline.service(ServletRequest, ServletResponse) line: 91
FilterChainInvocation.doFilter(ServletRequest, ServletResponse) line: 62
ManagedFilterPipeline.dispatch(ServletRequest, ServletResponse, FilterChain) line: 118
GuiceFilter.doFilter(ServletRequest, ServletResponse, FilterChain) line: 113
ApplicationFilterChain.internalDoFilter(ServletRequest, ServletResponse) line: 256
ApplicationFilterChain.doFilter(ServletRequest, ServletResponse) line: 217
StandardWrapperValve.invoke(Request, Response) line: 279
StandardContextValve.invoke(Request, Response) line: 175
StandardPipeline.doInvoke(Request, Response, boolean) line: 655
StandardPipeline.invoke(Request, Response) line: 595
StandardHostValve.invoke(Request, Response) line: 161
CoyoteAdapter.doService(Request, Request, Response, Response) line: 331
CoyoteAdapter.service(Request, Response) line: 231
ContainerMapper$AdapterCallable.call() line: 317
ContainerMapper.service(Request, Response) line: 195
ProcessorTask.invokeAdapter() line: 849
ProcessorTask.doProcess() line: 746
ProcessorTask.process(InputStream, OutputStream) line: 1045
DefaultProtocolFilter.execute(Context) line: 228
HttpProtocolChain(DefaultProtocolChain).executeProtocolFilter(Context, int) line: 137
HttpProtocolChain(DefaultProtocolChain).execute(Context, int) line: 104
HttpProtocolChain(DefaultProtocolChain).execute(Context) line: 90
HttpProtocolChain.execute(Context) line: 79
ProtocolChainContextTask.doCall() line: 54
ProtocolChainContextTask(SelectionKeyContextTask).call() line: 59
ProtocolChainContextTask(ContextTask).run() line: 71
FixedThreadPool$BasicWorker(AbstractThreadPool$Worker).doWork() line: 532
FixedThreadPool$BasicWorker(AbstractThreadPool$Worker).run() line: 513
HttpWorkerThread(Thread).run() line: 722
看來，如果攔截器不被調用的信息服務類。但是，它可以用於用戶服務類。爲什麼會這樣呢？
消息服務類：
@Stateless
@Interceptors(GuiceInterceptor.class)
public class MessageService {
/**
* The gmail folder default.
*/
private static final String GMAIL_ALL_MAIL = "[Gmail]/All Mail";
/**
* The IMAP store cache.
*/
@Inject
private IMAPStoreCache imapStoreCache;
/**
* The EJB resolver.
*/
@Inject
private EJBResolver ejbResolver;
用戶服務類：
@Stateless
@Interceptors(GuiceInterceptor.class)
public class UserService {
/**
* The entity manager.
*/
@PersistenceContext(unitName = "hupa")
private EntityManager em;
/**
* The session provider.
*/
@Inject
private Provider<HttpSession> sessionProvider;
最後攔截：
public class GuiceInterceptor {
@EJB
private GuiceInjectorHolder injectorHolder;
@AroundInvoke
@AroundTimeout
public Object injectByGuice(InvocationContext invocationContext) throws Exception {
Injector injector = injectorHolder.getInjector();
injector.injectMembers(invocationContext.getTarget());
return invocationContext.proceed();
}
}
希望有這個專家，我很沮喪;）