Accessing WebLogic Server MBeans with JMX (二)
Example: Printing the Name and State of Serversimport java.io.IOException;
import java.net.MalformedURLException;
import java.util.Hashtable;
import javax.management.MBeanServerConnection;
import javax.management.MalformedObjectNameException;
import javax.management.ObjectName;
import javax.management.remote.JMXConnector;
import javax.management.remote.JMXConnectorFactory;
import javax.management.remote.JMXServiceURL;
import javax.naming.Context;
public class PrintServerState {
private static MBeanServerConnection connection;
private static JMXConnector connector;
private static final ObjectName service;
// Initializing the object name for DomainRuntimeServiceMBean
// so it can be used throughout the class.
static {
try {
service = new ObjectName(
"com.bea:Name=DomainRuntimeService,Type=weblogic.management.
mbeanservers.domainruntime.DomainRuntimeServiceMBean");
}catch (MalformedObjectNameException e) {
throw new AssertionError(e.getMessage());
}
}
/*
* Initialize connection to the Domain Runtime MBean Server
*/
public static void initConnection(String hostname, String portString,
String username, String password) throws IOException,
MalformedURLException {
String protocol = "t3";
Integer portInteger = Integer.valueOf(portString);
int port = portInteger.intValue();
String jndiroot = "/jndi/";
String mserver = "weblogic.management.mbeanservers.domainruntime";
JMXServiceURL serviceURL = new JMXServiceURL(protocol, hostname,
port, jndiroot + mserver);
Hashtable h = new Hashtable();
h.put(Context.SECURITY_PRINCIPAL, username);
h.put(Context.SECURITY_CREDENTIALS, password);
h.put(JMXConnectorFactory.PROTOCOL_PROVIDER_PACKAGES,
"weblogic.management.remote");
connector = JMXConnectorFactory.connect(serviceURL, h);
connection = connector.getMBeanServerConnection();
}
/*
* Print an array of ServerRuntimeMBeans.
* This MBean is the root of the runtime MBean hierarchy, and
* each server in the domain hosts its own instance.
*/
public static ObjectName[] getServerRuntimes() throws Exception {
return (ObjectName[]) connection.getAttribute(service,
"ServerRuntimes");
}
/*
* Iterate through ServerRuntimeMBeans and get the name and state
*/
public void printNameAndState() throws Exception {
ObjectName[] serverRT = getServerRuntimes();
System.out.println("got server runtimes");
int length = (int) serverRT.length;
for (int i = 0; i < length; i++) {
String name = (String) connection.getAttribute(serverRT,
"Name");
String state = (String) connection.getAttribute(serverRT,
"State");
System.out.println("Server name: " + name + ". Server state: "
+ state);
}
}
public static void main(String[] args) throws Exception {
String hostname = args;
String portString = args;
String username = args;
String password = args;
PrintServerState s = new PrintServerState();
initConnection(hostname, portString, username, password);
s.printNameAndState();
connector.close();
}
}
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