Juha & Group, > make sure you add the getMethod and setMethod mapping to your MMB > attributes.
Thanks. I did this and started re-reading your JMX book. I now have a new error :) Below, I include my MBean Info generation code, and some error output. When I try to view the jmx-console page for my new MBean, the servlet tries to get all of the bean's attributes. The attribute "getId" is requested, but this information is stored by the name "Id". I assume that there is something wrong with my MBean info, but I can't figure out what it is. Error & debug output are listed below. Any help would be appreciated. - Matt ### metadata generation public ModelMBeanInfo getModelMBeanInfo() { final boolean READABLE = true; final boolean WRITABLE = true; final boolean BOOLEAN = true; // build 'Id' read-write attribute Descriptor descr1 = new DescriptorSupport(); descr1.setField("name", "Id"); descr1.setField("descriptorType", "attribute"); descr1.setField("displayName", "Identification"); descr1.setField("setMethod", "setId"); descr1.setField("getMethod", "getId"); ModelMBeanAttributeInfo idAttrInfo; idAttrInfo = new ModelMBeanAttributeInfo("Id", String.class.getName(), "Identification.", READABLE, WRITABLE, !BOOLEAN, descr1); // MBean descriptor Descriptor descr4 = new DescriptorSupport(); descr4.setField("name", "Widget"); descr4.setField("descriptorType", "mbean"); // was MBean // create ModelMBeanInfo ModelMBeanAttributeInfo[] attrInfo = new ModelMBeanAttributeInfo[] { idAttrInfo }; ModelMBeanOperationInfo[] operationInfo = new ModelMBeanOperationInfo[] {}; ModelMBeanInfo info = new ModelMBeanInfoSupport(RequiredModelMBean.class.getName(), "Widget", attrInfo, null, operationInfo, null, descr4); return info; } ### AttributeOperationREsolver constructor 11:33:33,020 INFO [STDOUT] !!!m attributes[0]: ModelMBeanAttributeInfo[Name=Id,Type=java.lang.String,Access=RW,Descript or(setMethod=setId,descriptorType=attribute,name=Id,displayName=Identificati on,getMethod=getId)] ### AttributeOperationREsolver.store() 11:33:33,020 INFO [STDOUT] !!!m storing attrName: Id and code: 0 ### AttributeOperationREsolver.lookup() 11:34:06,141 INFO [STDOUT] !!!m looking up actionName: getId and signature: [Ljava.lang.String;@1c87031 ### error java.lang.NoSuchMethodException: Unable to locate method for: getId() at org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBeanDispat cher.java:300) at org.jboss.mx.interceptor.ObjectReferenceInterceptor.invoke(ObjectReferenceIn terceptor.java:66) at org.jboss.mx.interceptor.MBeanAttributeInterceptor.invoke(MBeanAttributeInte rceptor.java:54) at org.jboss.mx.interceptor.PersistenceInterceptor.invoke(PersistenceIntercepto r.java:91) at org.jboss.mx.server.MBeanInvoker.invoke(MBeanInvoker.java:79) at org.jboss.mx.interceptor.MBeanAttributeInterceptor.invoke(MBeanAttributeInte rceptor.java:129) at org.jboss.mx.interceptor.PersistenceInterceptor.invoke(PersistenceIntercepto r.java:99) at org.jboss.mx.server.MBeanInvoker.getAttribute(MBeanInvoker.java:110) at javax.management.modelmbean.RequiredModelMBean.getAttribute(RequiredModelMBe an.java:147) at org.jboss.mx.server.MBeanServerImpl.getAttribute(MBeanServerImpl.java:455) at org.jboss.jmx.adaptor.control.Server.getMBeanAttributeResultInfo(Server.java :125) at org.apache.jsp.inspectMBean_jsp._jspService(inspectMBean_jsp.java:179) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:136) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:2 02) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:289) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:240) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:362) at org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandl er.java:284) at org.mortbay.jetty.servlet.Dispatcher.dispatch(Dispatcher.java:216) at org.mortbay.jetty.servlet.Dispatcher.forward(Dispatcher.java:151) at org.jboss.jmx.adaptor.html.HtmlAdaptorServlet.inspectMBean(HtmlAdaptorServle t.java:113) at org.jboss.jmx.adaptor.html.HtmlAdaptorServlet.processRequest(HtmlAdaptorServ let.java:73) at org.jboss.jmx.adaptor.html.HtmlAdaptorServlet.doGet(HtmlAdaptorServlet.java: 54) at javax.servlet.http.HttpServlet.service(HttpServlet.java:740) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:362) at org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandl er.java:284) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:565) at org.mortbay.http.HttpContext.handle(HttpContext.java:1664) at org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext .java:544) at org.mortbay.http.HttpContext.handle(HttpContext.java:1614) at org.mortbay.http.HttpServer.service(HttpServer.java:875) at org.jboss.jetty.Jetty.service(Jetty.java:531) at org.mortbay.http.HttpConnection.service(HttpConnection.java:785) at org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:935) at org.mortbay.http.HttpConnection.handle(HttpConnection.java:802) at org.mortbay.http.SocketListener.handleConnection(SocketListener.java:200) at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:294) at org.mortbay.util.ThreadPool$JobRunner.run(ThreadPool.java:743) at java.lang.Thread.run(Thread.java:536) ------------------------------------------------------- This sf.net email is sponsored by: DEDICATED SERVERS only $89! 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