示例代码
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String jmxURL = "service:jmx:rmi:///jndi/rmi://192.168.10.93:8999/jmxrmi"; JMXServiceURL serviceURL = new JMXServiceURL(jmxURL); Map map = new HashMap(); // 用户名密码,在jmxremote.password文件中查看 String[] credentials = new String[] { "monitorRole", "tomcat" }; 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-8080"); MBeanInfo mbInfo = mbsc.getMBeanInfo(threadObjName); // tomcat的线程数对应的属性值 String attrName = "currentThreadCount"; MBeanAttributeInfo[] mbAttributes = mbInfo.getAttributes(); System.out.println("currentThreadCount:" + mbsc.getAttribute(threadObjName, attrName)); |
完整的示例代码文件
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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; /** * @author liuyazhuang * @date 2016-05-31 */ public class JMXTest { /** * main方法 * @param args */ public static void main(String[] args) { try { String jmxURL = "service:jmx:rmi:///jndi/rmi://127.0.0.1:8999/jmxrmi" ; JMXServiceURL serviceURL = new JMXServiceURL(jmxURL); Map map = new HashMap(); String[] credentials = new String[] { "monitorRole" , "tomcat" }; 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-8080" ); 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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原文链接:https://www.cnblogs.com/liu-ke/p/7008936.html