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https://issues.apache.org/activemq/browse/AMQ-2154?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=50443#action_50443
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Giovani Seben commented on AMQ-2154:
------------------------------------
I did some testing around this issue, and I found that adding the serializable
object class to the broker's classpath will allow getBody() to return
correctly.
In the suggested test case, adding "com.myclass" to the broker classpath will
likely solve the problem, and would explain the ClassNotFoundException. It
would probably be a good idea to return a friendly reminder about the possible
cause of the problem along with the exception.
> trying to access an ObjectMessage in the AMQ web console results in
> java.io.IOException: com.myclass...
> -------------------------------------------------------------------------------------------------------
>
> Key: AMQ-2154
> URL: https://issues.apache.org/activemq/browse/AMQ-2154
> Project: ActiveMQ
> Issue Type: Bug
> Components: Broker
> Affects Versions: 5.1.0
> Environment: web console, ObjectMessage
> Reporter: Torsten Mielke
> Priority: Minor
> Attachments: AMQ-2154.patch
>
>
> The web console can be used to drill into individual message and display both
> their properties as well as payload.
> Displaying the payload generally works fine for TextMessages, etc but fails
> for ObjectMessages and probably other binary payload formats.
> This is okay and kind of expected but rather than throwing an exception with
> a large stack trace back to the browser client, we should capture the ex and
> display at least the message properties and also a short message that the
> content cannot be displayed due to its binary content.
> Error msg and stack trace that is thrown:
> {code}
> java.io.IOException: com.myclass
> at
> org.apache.activemq.command.ActiveMQObjectMessage.getObject(ActiveMQObjectMessage.java:179)
> at org.apache.activemq.web.MessageQuery.getBody(MessageQuery.java:78)
> 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:585)
> at javax.el.BeanELResolver.getValue(BeanELResolver.java:261)
> at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:143)
> at com.sun.el.parser.AstValue.getValue(AstValue.java:138)
> at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:206)
> at
> org.apache.jasper.runtime.PageContextImpl.evaluateExpression(PageContextImpl.java:984)
> at
> org.apache.jsp.message_jsp._jspx_meth_c_out_0(org.apache.jsp.message_jsp:400)
> at
> org.apache.jsp.message_jsp._jspx_meth_c_otherwise_0(org.apache.jsp.message_jsp:334)
> at
> org.apache.jsp.message_jsp._jspx_meth_c_choose_0(org.apache.jsp.message_jsp:151)
> at org.apache.jsp.message_jsp._jspService(org.apache.jsp.message_jsp:92)
> at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:93)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
> at
> org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:373)
> at
> org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:477)
> at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:371)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
> at
> org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1093)
> at
> org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:83)
> at
> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
> at org.apache.activemq.web.SessionFilter.doFilter(SessionFilter.java:46)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
> at
> org.apache.activemq.web.filter.ApplicationContextFilter.doFilter(ApplicationContextFilter.java:81)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
> at
> com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.java:118)
> at
> com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:52)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
> at
> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360)
> at
> org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
> at
> org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
> at
> org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:712)
> at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
> at
> org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
> at
> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)
> at org.mortbay.jetty.Server.handle(Server.java:324)
> at
> org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:506)
> at
> org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:829)
> at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:514)
> at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
> at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:381)
> at
> org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:396)
> at
> org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:442)
> {code}
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