package com.jacob.samples.system;
import com.jacob.activeX.ActiveXComponent;
import com.jacob.com.Dispatch;
import com.jacob.com.EnumVariant;
import com.jacob.com.Variant;
/**
* Sample program that shows how to talk to WMI on local machine.
*
* This test program was derived from SourceForge question
* http://sourceforge.net/forum/forum.php?thread_id=1831650&forum_id=375946
* fold, spindled and mutilated by clay_shooter
*
* @author chris_knowles
*
*/
public class SystemMonitor {
/**
* example run loop method called by main()
*/
public void runMonitor() {
ActiveXComponent wmi = null;
wmi = new ActiveXComponent("WbemScripting.SWbemLocator");
// no connection parameters means to connect to the local machine
Variant conRet = wmi.invoke("ConnectServer");
// the author liked the ActiveXComponent api style over the Dispatch
// style
ActiveXComponent wmiconnect = new ActiveXComponent(conRet.toDispatch());
// the WMI supports a query language.
String query = "select CategoryString, Message, TimeGenerated, User, Type "
+ "from Win32_NtLogEvent "
+ "where Logfile = 'Application' and TimeGenerated > '20070915000000.000000-***'";
Variant vCollection = wmiconnect
.invoke("ExecQuery", new Variant(query));
EnumVariant enumVariant = new EnumVariant(vCollection.toDispatch());
String resultString = "";
Dispatch item = null;
while (enumVariant.hasMoreElements()) {
resultString = "";
item = enumVariant.nextElement().toDispatch();
String categoryString = Dispatch.call(item, "CategoryString")
.toString();
String messageString = Dispatch.call(item, "Message").toString();
String timeGenerated = Dispatch.call(item, "TimeGenerated")
.toString();
String eventUser = Dispatch.call(item, "User").toString();
String eventType = Dispatch.call(item, "Type").toString();
resultString += "TimeGenerated: " + timeGenerated + " Category: "
+ categoryString + " User: " + eventUser + " EventType: "
+ eventType + " Message:" + messageString;
System.out.println(resultString);
}
}
/**
* sample's main program
*
* @param args
* command line arguments
*/
public static void main(String[] args) {
SystemMonitor utilConnection = new SystemMonitor();
utilConnection.runMonitor();
}
}