import java.lang.management.MemoryUsage; import java.text.SimpleDateFormat; import java.util.Date; import java.util.Formatter; import java.util.HashMap; import java.util.Iterator; import java.util.Map; import java.util.Set; import javax.management.MBeanAttributeInfo; import javax.management.MBeanInfo; import javax.management.MBeanServerConnection; import javax.management.ObjectInstance; import javax.management.ObjectName; import javax.management.openmbean.CompositeDataSupport; import javax.management.remote.JMXConnector; import javax.management.remote.JMXConnectorFactory; import javax.management.remote.JMXServiceURL; public class JMXTest { /** * @param args */ public static void main(String[] args) { try { String jmxURL = "service:jmx:rmi:///jndi/rmi://127.0.0.1:6901/jmxrmi";//tomcat jmx url JMXServiceURL serviceURL = new JMXServiceURL(jmxURL); Map map = new HashMap(); String[] credentials = new String[] { "monitorRole" , "QED" }; map.put("jmx.remote.credentials", credentials); JMXConnector connector = JMXConnectorFactory.connect(serviceURL, map); MBeanServerConnection mbsc = connector.getMBeanServerConnection(); //端口最好是动态取得 ObjectName threadObjName = new ObjectName("Catalina:type=ThreadPool,name=http-80"); MBeanInfo mbInfo = mbsc.getMBeanInfo(threadObjName); String attrName = "currentThreadCount";//tomcat的线程数对应的属性值 MBeanAttributeInfo[] mbAttributes = mbInfo.getAttributes(); System.out.println("currentThreadCount:"+mbsc.getAttribute(threadObjName, attrName)); //heap for(int j=0;j <mbsc.getDomains().length;j++){ System.out.println("###########"+mbsc.getDomains()[j]); } Set MBeanset = mbsc.queryMBeans(null, null); System.out.println("MBeanset.size() : " + MBeanset.size()); Iterator MBeansetIterator = MBeanset.iterator(); while (MBeansetIterator.hasNext()) { ObjectInstance objectInstance = (ObjectInstance)MBeansetIterator.next(); ObjectName objectName = objectInstance.getObjectName(); String canonicalName = objectName.getCanonicalName(); System.out.println("canonicalName : " + canonicalName); if (canonicalName.equals("Catalina:host=localhost,type=Cluster")) { // Get details of cluster MBeans System.out.println("Cluster MBeans Details:"); System.out.println("========================================="); //getMBeansDetails(canonicalName); String canonicalKeyPropList = objectName.getCanonicalKeyPropertyListString(); } } //------------------------- system ---------------------- ObjectName runtimeObjName = new ObjectName("java.lang:type=Runtime"); System.out.println("厂商:"+ (String)mbsc.getAttribute(runtimeObjName, "VmVendor")); System.out.println("程序:"+ (String)mbsc.getAttribute(runtimeObjName, "VmName")); System.out.println("版本:"+ (String)mbsc.getAttribute(runtimeObjName, "VmVersion")); Date starttime=new Date((Long)mbsc.getAttribute(runtimeObjName, "StartTime")); SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); System.out.println("启动时间:"+df.format(starttime)); Long timespan=(Long)mbsc.getAttribute(runtimeObjName, "Uptime"); System.out.println("连续工作时间:"+JMXTest.formatTimeSpan(timespan)); //------------------------ JVM ------------------------- //堆使用率 ObjectName heapObjName = new ObjectName("java.lang:type=Memory"); MemoryUsage heapMemoryUsage = MemoryUsage.from((CompositeDataSupport)mbsc.getAttribute(heapObjName, "HeapMemoryUsage")); long maxMemory = heapMemoryUsage.getMax();//堆最大 long commitMemory = heapMemoryUsage.getCommitted();//堆当前分配 long usedMemory = heapMemoryUsage.getUsed(); System.out.println("heap:"+(double)usedMemory*100/commitMemory+"%");//堆使用率 MemoryUsage nonheapMemoryUsage = MemoryUsage.from((CompositeDataSupport)mbsc.getAttribute(heapObjName, "NonHeapMemoryUsage")); long noncommitMemory = nonheapMemoryUsage.getCommitted(); long nonusedMemory = heapMemoryUsage.getUsed(); System.out.println("nonheap:"+(double)nonusedMemory*100/noncommitMemory+"%"); ObjectName permObjName = new ObjectName("java.lang:type=MemoryPool,name=Perm Gen"); MemoryUsage permGenUsage = MemoryUsage.from((CompositeDataSupport)mbsc.getAttribute(permObjName, "Usage")); long committed = permGenUsage.getCommitted();//持久堆大小 long used = heapMemoryUsage.getUsed();// System.out.println("perm gen:"+(double)used*100/committed+"%");//持久堆使用率 //-------------------- Session --------------- ObjectName managerObjName = new ObjectName("Catalina:type=Manager,*"); Set<ObjectName> s=mbsc.queryNames(managerObjName, null); for (ObjectName obj:s){ System.out.println("应用名:"+obj.getKeyProperty("path")); ObjectName objname=new ObjectName(obj.getCanonicalName()); System.out.println("最大会话数:"+ mbsc.getAttribute( objname, "maxActiveSessions")); System.out.println("会话数:"+ mbsc.getAttribute( objname, "activeSessions")); System.out.println("活动会话数:"+ mbsc.getAttribute( objname, "sessionCounter")); } //----------------- Thread Pool ---------------- ObjectName threadpoolObjName = new ObjectName("Catalina:type=ThreadPool,*"); Set<ObjectName> s2=mbsc.queryNames(threadpoolObjName, null); for (ObjectName obj:s2){ System.out.println("端口名:"+obj.getKeyProperty("name")); ObjectName objname=new ObjectName(obj.getCanonicalName()); System.out.println("最大线程数:"+ mbsc.getAttribute( objname, "maxThreads")); System.out.println("当前线程数:"+ mbsc.getAttribute( objname, "currentThreadCount")); System.out.println("繁忙线程数:"+ mbsc.getAttribute( objname, "currentThreadsBusy")); } } catch (Exception e) { e.printStackTrace(); } } public static String formatTimeSpan(long span){ long minseconds = span % 1000; span = span /1000; long seconds = span % 60; span = span / 60; long mins = span % 60; span = span / 60; long hours = span % 24; span = span / 24; long days = span; return (new Formatter()).format("%1$d天 %2$02d:%3$02d:%4$02d.%5$03d", days,hours,mins,seconds,minseconds).toString(); } }
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