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)
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