Hello,

If I set null to the headers when using ServerResponse, I got NPE! Not a
WEB application error, but a NPE:

new ServerResponse("Please verify the sent parameters, can't convert for
use", 400, null);

01:48:40,542 ERROR
[org.apache.catalina.core.ContainerBase.[jboss.web].[default-host].[/resteasy-interceptors].[org.mastertheboss.resteasy.resources.Activator]]
(http-localhost-127.0.0.1-8080-1) Servlet.service() for servlet
org.mastertheboss.resteasy.resources.Activator threw exception:
org.jboss.resteasy.spi.UnhandledException: java.lang.NullPointerException
 at
org.jboss.resteasy.core.SynchronousDispatcher.handleException(SynchronousDispatcher.java:245)
[resteasy-jaxrs-2.3.2.Final.jar:]
at
org.jboss.resteasy.core.SynchronousDispatcher.handleInvokerException(SynchronousDispatcher.java:190)
[resteasy-jaxrs-2.3.2.Final.jar:]
 at
org.jboss.resteasy.core.SynchronousDispatcher.getResponse(SynchronousDispatcher.java:540)
[resteasy-jaxrs-2.3.2.Final.jar:]
at
org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:502)
[resteasy-jaxrs-2.3.2.Final.jar:]
 at
org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:119)
[resteasy-jaxrs-2.3.2.Final.jar:]
at
org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:208)
[resteasy-jaxrs-2.3.2.Final.jar:]
 at
org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:55)
[resteasy-jaxrs-2.3.2.Final.jar:]
at
org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:50)
[resteasy-jaxrs-2.3.2.Final.jar:]
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
[jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final]
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329)
[jbossweb-7.0.13.Final.jar:]
 at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)
[jbossweb-7.0.13.Final.jar:]
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275)
[jbossweb-7.0.13.Final.jar:]
 at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161)
[jbossweb-7.0.13.Final.jar:]
at
org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:153)
[jboss-as-web-7.1.1.Final.jar:7.1.1.Final]
 at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155)
[jbossweb-7.0.13.Final.jar:]
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
[jbossweb-7.0.13.Final.jar:]
 at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
[jbossweb-7.0.13.Final.jar:]
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368)
[jbossweb-7.0.13.Final.jar:]
 at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877)
[jbossweb-7.0.13.Final.jar:]
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671)
[jbossweb-7.0.13.Final.jar:]
 at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930)
[jbossweb-7.0.13.Final.jar:]
at java.lang.Thread.run(Unknown Source) [rt.jar:1.6.0_30]
Caused by: java.lang.NullPointerException
at org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:229)
[resteasy-jaxrs-2.3.2.Final.jar:]
 at org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:211)
[resteasy-jaxrs-2.3.2.Final.jar:]
at
org.jboss.resteasy.core.SynchronousDispatcher.getResponse(SynchronousDispatcher.java:525)
[resteasy-jaxrs-2.3.2.Final.jar:]
 ... 19 more

If I set a simple a new object for the headers, I'll not have the NPE and
everything will work fine.

new ServerResponse(
"Please verify the sent parameters, can't convert for use",
400, new Headers<Object>());

I don't know if we can work this as a bug, but it may hard to find the
cause of the issue while debugging an application :(

Anyway, how it may at least be useful if someone is falling into same
problem!
--
*William Antônio Siqueira*
*Java Support Analyst*
*
*
*http://fxapps.blogspot.com*
*http://www.williamantonio.wordpress.com*
*http://williamprogrammer.com*
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