MBeanExporter.java 文件源码

/**
 * Build an adapted MBean for the given bean instance, if possible.
 * <p>The default implementation builds a JMX 1.2 StandardMBean
 * for the target's MBean/MXBean interface in case of an AOP proxy,
 * delegating the interface's management operations to the proxy.
 * @param bean the original bean instance
 * @return the adapted MBean, or {@code null} if not possible
 */
@SuppressWarnings("unchecked")
protected DynamicMBean adaptMBeanIfPossible(Object bean) throws JMException {
    Class<?> targetClass = AopUtils.getTargetClass(bean);
    if (targetClass != bean.getClass()) {
        Class<?> ifc = JmxUtils.getMXBeanInterface(targetClass);
        if (ifc != null) {
            if (!ifc.isInstance(bean)) {
                throw new NotCompliantMBeanException("Managed bean [" + bean +
                        "] has a target class with an MXBean interface but does not expose it in the proxy");
            }
            return new StandardMBean(bean, ((Class<Object>) ifc), true);
        }
        else {
            ifc = JmxUtils.getMBeanInterface(targetClass);
            if (ifc != null) {
                if (!ifc.isInstance(bean)) {
                    throw new NotCompliantMBeanException("Managed bean [" + bean +
                            "] has a target class with an MBean interface but does not expose it in the proxy");
                }
                return new StandardMBean(bean, ((Class<Object>) ifc));
            }
        }
    }
    return null;
}