全局JSF异常处理程序不能捕获所有错误 [英] Global JSF exception handler doesn't catch all errors
问题描述
我实现了一个异常处理程序，如本页所述：
I implemented an exception handler like described on this page:
可惜的是，我仍然收到一些这个解决方案无法处理的错误。你有什么线索如何捕获所有错误？
Sadly I still receive some errors which are not handled by this solution. Do you have any clue how to catch all errors?
这没有被我的处理程序捕获：
This was not catched by my handler:
Warnung: A system exception occurred during an invocation on EJB EmailController, method: public void com.x.tool.EmailController.sendAdminNotificationReportRegistration(com.x.JPA.Entity.User) throws java.lang.Exception
Warnung: javax.ejb.EJBException
at com.sun.ejb.containers.EJBContainerTransactionManager.processSystemException(EJBContainerTransactionManager.java:748)
at com.sun.ejb.containers.EJBContainerTransactionManager.completeNewTx(EJBContainerTransactionManager.java:698)
at com.sun.ejb.containers.EJBContainerTransactionManager.postInvokeTx(EJBContainerTransactionManager.java:503)
at com.sun.ejb.containers.BaseContainer.postInvokeTx(BaseContainer.java:4566)
at com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:2074)
at com.sun.ejb.containers.EjbAsyncTask.call(EjbAsyncTask.java:114)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
at com.x.tool.EmailController.sendAdminNotificationReportRegistration(EmailController.java:189)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.glassfish.ejb.security.application.EJBSecurityManager.runMethod(EJBSecurityManager.java:1081)
at org.glassfish.ejb.security.application.EJBSecurityManager.invoke(EJBSecurityManager.java:1153)
at com.sun.ejb.containers.BaseContainer.invokeBeanMethod(BaseContainer.java:4786)
at com.sun.ejb.EjbInvocation.invokeBeanMethod(EjbInvocation.java:656)
at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:822)
at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:608)
at org.jboss.weld.ejb.AbstractEJBRequestScopeActivationInterceptor.aroundInvoke(AbstractEJBRequestScopeActivationInterceptor.java:55)
at org.jboss.weld.ejb.SessionBeanInterceptor.aroundInvoke(SessionBeanInterceptor.java:52)
at sun.reflect.GeneratedMethodAccessor96.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at com.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:883)
at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:822)
at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:608)
at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.doCall(SystemInterceptorProxy.java:163)
at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.aroundInvoke(SystemInterceptorProxy.java:140)
at sun.reflect.GeneratedMethodAccessor472.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at com.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:883)
at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:822)
at com.sun.ejb.containers.interceptors.InterceptorManager.intercept(InterceptorManager.java:369)
at com.sun.ejb.containers.BaseContainer.__intercept(BaseContainer.java:4758)
at com.sun.ejb.containers.BaseContainer.intercept(BaseContainer.java:4746)
at com.sun.ejb.containers.EjbAsyncTask.call(EjbAsyncTask.java:101)
... 4 more
推荐答案
在提供JSF请求时没有抛出此异常。在执行异步 EJB服务调用时抛出它。即运行在与JSF请求服务器不同的线程中！
This exception was not thrown while serving a JSF request. It was thrown while executing an asynchronous EJB service call. I.e. running in a different thread than the one serving the JSF request!
由于它是异步执行的，所以没有办法得到任何异常，最终在响应中返回结果一个JSF请求。所以，它不可能得到它最终在JSF错误页面，而不删除 @Asynchronous 注释使其同步。
As it's executed asynchronously, there's no way to get any exception to end up in the response returning the result of a JSF request. So, it's impossible to get it to end up in a JSF error page without removing the @Asynchronous annotation to make it synchronous.
以任何方式，如果将其显示在错误页面中并不重要，但实际上对日志/邮件/任何事情更感兴趣，那么可以在异步EJB中抛出任何异常服务电话使用 @AroundInvoke 拦截器如下：
In any way, if presenting it into an error page is not that important, but you're actually more interested in logging/mailing/whatever it, then you can get hold of any exception thrown during an (asynchronous) EJB service call using an @AroundInvoke interceptor as below:
public class ExceptionHandlerInterceptor {
@AroundInvoke
public Object logExceptions(InvocationContext context) throws Exception {
try {
return context.proceed();
}
catch (Exception e) {
// Log/mail/whatever it here.
throw e; // Don't forget to rethrow!
}
}
}
该类在EJB项目中的某个地方，并通过EJB类上的 @Interceptors 注释来注册，
Just put the class somewhere in the EJB project and register it via either @Interceptors annotation on the EJB class,
@Stateless
@Interceptors(ExceptionHandlerInterceptor.class)
public class FooService {}
或EJB项目范围内的 /META-INF/ejb-jar.xml 中的以下条目：
or EJB project-wide via the below entries in /META-INF/ejb-jar.xml:
<interceptors>
<interceptor>
<interceptor-class>com.example.ExceptionHandlerInterceptor</interceptor-class>
</interceptor>
</interceptors>
<assembly-descriptor>
<interceptor-binding>
<ejb-name>*</ejb-name>
<interceptor-class>com.example.ExceptionHandlerInterceptor</interceptor-class>
</interceptor-binding>
</assembly-descriptor>
这篇关于全局JSF异常处理程序不能捕获所有错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
