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Accessing MBeans through Proxies
Spring JMX lets you create proxies that re-route calls to MBeans that are registered in a
local or remote MBeanServer
. These proxies provide you with a standard Java interface,
through which you can interact with your MBeans. The following code shows how to configure a
proxy for an MBean running in a local MBeanServer
:
<bean id="proxy" class="org.springframework.jmx.access.MBeanProxyFactoryBean">
<property name="objectName" value="bean:name=testBean"/>
<property name="proxyInterface" value="org.springframework.jmx.IJmxTestBean"/>
</bean>
In the preceding example, you can see that a proxy is created for the MBean registered under the
ObjectName
of bean:name=testBean
. The set of interfaces that the proxy implements
is controlled by the proxyInterfaces
property, and the rules for mapping methods and
properties on these interfaces to operations and attributes on the MBean are the same
rules used by the InterfaceBasedMBeanInfoAssembler
.
The MBeanProxyFactoryBean
can create a proxy to any MBean that is accessible through an
MBeanServerConnection
. By default, the local MBeanServer
is located and used, but
you can override this and provide an MBeanServerConnection
that points to a remote
MBeanServer
to cater for proxies that point to remote MBeans:
<bean id="clientConnector"
class="org.springframework.jmx.support.MBeanServerConnectionFactoryBean">
<property name="serviceUrl" value="service:jmx:rmi://remotehost:9875"/>
</bean>
<bean id="proxy" class="org.springframework.jmx.access.MBeanProxyFactoryBean">
<property name="objectName" value="bean:name=testBean"/>
<property name="proxyInterface" value="org.springframework.jmx.IJmxTestBean"/>
<property name="server" ref="clientConnector"/>
</bean>
In the preceding example, we create an MBeanServerConnection
that points to a remote machine
that uses the MBeanServerConnectionFactoryBean
. This MBeanServerConnection
is then
passed to the MBeanProxyFactoryBean
through the server
property. The proxy that is
created forwards all invocations to the MBeanServer
through this
MBeanServerConnection
.