JMX Usage
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About JMX
Actually, if you go to C:\COMET-DEV\workspaces\COES\config\quantum\cash\AP\dev\cash_coes_sls1, which is the config folder for COES, you can see that, there is actually one quantum config file --- spring-qas.xml, but go inside, you will find that, this file is composed of several sub config files. One of them is spr-include-mbeans.xml. And this file is just config the JMX as above.
How to config it
1) Config a MBean Server "java.lang.management.ManagementFactory"
2) Config a JMX exporter "org.springframework.jmx.export.MBeanExporter"
3) Put all your POJOs into the exporter map.
4) There is a requirement on how to write the key of the entry. You must follow the way of
<JMX category Name>:name=<MBean name>.
In the below example, I config the
JMX category name = tom
MBean name = myNumber
5) Also don’t forget to config your POJO.
An example
POJO
package test;
public class NumberHolder
{
private int number = 100;
public int getNumber()
{
return number;
}
public void setNumber(int number)
{
this.number = number;
}
}
Spring
<bean id="mbeanServer" class="java.lang.management.ManagementFactory"
factory-method="getPlatformMBeanServer" />
<bean id="exporter" class="org.springframework.jmx.export.MBeanExporter">
<property name="autodetect" value="true" />
<property name="server" ref="mbeanServer" />
<property name="beans">
<map>
<entry key="tom:name=myNumber" value-ref="number.holder" />
</map>
</property>
</bean>
<bean name="number.holder" class="test.NumberHolder"/>
How to Use it
2 requirements
1) Enable your JMX management function. Simply add the following parameters in your java command.
-Dcom.sun.management.jmxremote
-Dcom.sun.management.jmxremote.port=9054
-Dcom.sun.management.jmxremote.authenticate=false
-Dcom.sun.management.jmxremote.ssl=false
2) Use JConsole to connect to it.
Jconsole.exe locates in the jdk/bin folder. You can add it as a eclipse external tool. When it is started, go to Remote tab, input host --- localhost port --- 9054 as configged above. Connect
You can see a new category --- tom, and a new MBean --- myNumber. Then, you can invoke the MBean public method.