clickmeterdyn.java

这个是一个关于JMX的一个源代码

package dwjmxservice.basic;

import javax.management.MBeanInfo;
import javax.management.DynamicMBean;
import javax.management.Attribute;
import javax.management.AttributeList;
import javax.management.MBeanInfo;
import javax.management.MBeanAttributeInfo;
import javax.management.MBeanConstructorInfo;
import javax.management.MBeanOperationInfo;

public class ClickMeterDyn extends ClickMeterInstrm implements DynamicMBean {

  public ClickMeterDyn() {
  }

  public static void main(String[] args) {
   setLandF();
   ClickMeterDyn cms = new ClickMeterDyn();
    // can use standard MBean agent - same logic
    BaseStdAgent myAgent = new BaseStdAgent();
    myAgent.startAgent((Object) cms);

  }

// implements the dynamic MBean interface

public Object getAttribute(String inAttrName) {
  if (inAttrName.equals("PanelValue"))
               return ((Object) getPanelValue());
  else
           return null;
}

    public void setAttribute(Attribute attribute) {
      if (attribute.getName().equals("PanelValue"))
        setPanelValue((Integer)  attribute.getValue());
}

      public AttributeList getAttributes(String[] attributeNames) {
	AttributeList resultList = new AttributeList();

	for (int i=0 ; i<attributeNames.length ; i++){
	    try {

		resultList.add(new Attribute(attributeNames[i],
                (Object) getAttribute( (String) attributeNames[i])
                ));
	    } catch (Exception e) {
		e.printStackTrace();
	    }
	}
	return(resultList);

    }
    public AttributeList setAttributes(AttributeList attributes) {
	AttributeList resultList = new AttributeList();

	for (int i = 0; i<attributes.size(); i++) {
	    Attribute attr = (Attribute) attributes.get(i);
	    try {
		setAttribute(attr);
		String name = attr.getName();

		resultList.add(new Attribute(name,
                (Object) getAttribute(name)));
	    } catch(Exception e) {
		e.printStackTrace();
	    }
	}
	return(resultList);
  }

  public Object invoke(String opName, Object params[], String signature[]) {

  if (opName.equals("incPanelValue")){
	    incPanelValue();

	} else {

        if (opName.equals("decPanelValue")) {
            decPanelValue();
            }
      }
      return null;
  }
  public MBeanInfo getMBeanInfo() {
     MBeanAttributeInfo [] mbai = new MBeanAttributeInfo[1];
      mbai[0] = new MBeanAttributeInfo("PanelValue",
						"java.lang.Integer",
						"The Panel Value",
						true,
						true,
						false);

    MBeanConstructorInfo [] mbci = new MBeanConstructorInfo[1];
    mbci[0] = new MBeanConstructorInfo("ClickMeterDyn", "Dynamic MBean Click Meter",
    null);

    MBeanOperationInfo [] mboi = new MBeanOperationInfo[2];
    mboi[0] = new MBeanOperationInfo("incPanelValue", "increment the meter value",
    null, "void", MBeanOperationInfo.ACTION);
    mboi[1] = new MBeanOperationInfo("decPanelValue", "decrement the meter value",
    null, "void", MBeanOperationInfo.ACTION);
    return  new MBeanInfo("dwjmxservice.basic.ClickMeterDyn",
				   "MBean:Click Meter",
				   mbai,
				   mbci,
				   mboi,
				   null);
    }

  }