1、先配Tomcat的啟動語句，window下tomcat的bin/catalina.bat（linux為catalina.sh），在頭上注釋部分（.bat為rem、.sh為#）后面加上set JAVA_OPTS=-Dcom.sun.management.jmxremote.port=8999 -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=true
(linux為JAVA_OPTS=-Dcom.sun.management.jmxremote.port=8999 -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=true)
2、修改jmx遠程訪問授權。默認為JAVA_HOME/jre/lib/management下jmxremote.access、jmxremote.password（缺省系統提供了個模版jmxremote.password.template改下名就成）
注意：linux下需要該權限，chmod 600 jmxremote.access, chmod 600 jmxremote.password
window下特麻煩，現需要jdk裝在NTFS文件系統下，選中文件，點右鍵“屬性”-〉安全，點“高級”，去掉“從父項繼承....”，彈出窗口中選“刪除”，這樣刪除了所有訪問權限。再選“添加”-〉高級，“立即查找”，選中你的用戶，例administrator，點“確定"，“確定"。來到權限窗口，勾選"完全控制"，點"確定"，OK了。
3、用jconsole連接遠程linux服務時, IP地址和port都輸入正確的情況下,仍然是連接失敗
vi /etc/hosts，將hostname對應的IP改為真實IP
4、測試JMX。啟動tomcat，在window“命令行窗口”中輸入netstat -an看下8999端口打開沒有。若沒有，則前面沒配對。若已打開，則可在另一台機器的“命令行窗口”中輸入jconsole，打開jdk自帶的jmx客戶端。選遠程連接，錄入tomcat所在機器的IP，端口例192.168.10.10:8999，帳號、密碼在jmxremote.password中，如帳號controlRole，密碼R&D（缺省monitorRole只能讀，controlRole能讀寫，jmxremote.access中可配置）。點“連接”。看到圖就行了。
5、關於數據。Mbean屬性頁中給出了相應的數據，Catalina中是tomcat的，java.lang是jvm的。對於加粗的黑體屬性值，需雙擊一下才可看內容
5、關於編程。
public class JMXTest { /** * @param args */ public static void main(String[] args) { try { String jmxURL = "service:jmx:rmi:///jndi/rmi://192.168.10.93:8999/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(); //端口最好是動態取得 ObjectName threadObjName = new ObjectName("Catalina:type=ThreadPool,name=http-8080"); MBeanInfo mbInfo = mbsc.getMBeanInfo(threadObjName); String attrName = "currentThreadCount";//tomcat的線程數對應的屬性值 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("廠商:"+ (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("啟動時間:"+df.format(starttime)); Long timespan=(Long)mbsc.getAttribute(runtimeObjName, "Uptime"); System.out.println("連續工作時間:"+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();//堆當前分配 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("應用名:"+obj.getKeyProperty("path")); ObjectName objname=new ObjectName(obj.getCanonicalName()); System.out.println("最大會話數:"+ mbsc.getAttribute( objname, "maxActiveSessions")); System.out.println("會話數:"+ mbsc.getAttribute( objname, "activeSessions")); System.out.println("活動會話數:"+ 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("最大線程數:"+ mbsc.getAttribute( objname, "maxThreads")); System.out.println("當前線程數:"+ mbsc.getAttribute( objname, "currentThreadCount")); System.out.println("繁忙線程數:"+ 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(); } }
另外實例：
public ConcurrentHashMap<String, Object> parseJMS(String tempid, ConcurrentHashMap<String, Object> paraMap) { MBeanServerConnection mbsc = null; try { mbsc = connector.getMBeanServerConnection(); // ------------------------- system ---------------------- ObjectName runtimeObjName = new ObjectName("java.lang:type=Runtime"); TabularDataSupport system = (TabularDataSupport) mbsc.getAttribute(runtimeObjName, "SystemProperties"); //JVM版本 paraMap.put(tempid + "_JVMVERSION", mbsc.getAttribute(runtimeObjName, "VmVersion")); //JVM廠商 paraMap.put(tempid + "_JVMMANUFACTURER", mbsc.getAttribute(runtimeObjName, "VmVendor")); //系統結構 paraMap.put(tempid + "_SYSTEMSTRUCTURE", system.get(new Object[] {"os.arch"}).get("value")); //操作系統 paraMap.put(tempid + "_OPERATIONSYSTEM", system.get(new Object[] {"os.name"}).get("value")); //操作系統版本 paraMap.put(tempid + "_OPERATIONSYSTEMVERSION", system.get(new Object[] {"os.version"}).get("value")); //Tomcat版本 String t_version = (String) system.get(new Object[] {"org.apache.catalina.startup.TldConfig.jarsToSkip"}).get("value"); paraMap.put(tempid + "_TOMCATVERSION", t_version == null ? "" : t_version.substring(0, t_version.indexOf("-"))); //鏈接Tomcat服務器的響應時間 ------------- ObjectName heapObjName = new ObjectName("java.lang:type=Memory"); MemoryUsage heapMemoryUsage = MemoryUsage.from((CompositeDataSupport)mbsc.getAttribute(heapObjName, "HeapMemoryUsage")); //JVM已用內存 paraMap.put(tempid + "_JVMUSERDMEMORY", heapMemoryUsage.getUsed()); //JVM可用內存 paraMap.put(tempid + "_JVMAVAILABLEMEMORY", heapMemoryUsage.getCommitted() - heapMemoryUsage.getUsed()); //JVM內存總數 paraMap.put(tempid + "_JVMTOTALMEMORY", heapMemoryUsage.getCommitted()); //----------------- GlobalRequestProcessor ---------------- ObjectName requestProcessor = new ObjectName("Catalina:type=GlobalRequestProcessor,*"); Set<ObjectName> s2 = mbsc.queryNames(requestProcessor, null); long bytesSents = 0; long bytesReceiveds = 0; Integer errorCounts = 0; Integer requestCounts = 0; long processingTimes = 0; long maxTimes = 0; for (ObjectName obj : s2) { ObjectName objname = new ObjectName(obj.getCanonicalName()); long bytesSent = (long) mbsc.getAttribute( objname, "bytesSent"); long bytesReceived = (long) mbsc.getAttribute( objname, "bytesReceived"); Integer errorCount = (Integer) mbsc.getAttribute( objname, "errorCount"); Integer requestCount = (Integer) mbsc.getAttribute( objname, "requestCount"); long processingTime = (long) mbsc.getAttribute( objname, "processingTime"); long maxTime = (long) mbsc.getAttribute( objname, "maxTime"); bytesSents += bytesSent; bytesReceiveds += bytesReceived; errorCounts += errorCount; requestCounts += requestCount; processingTimes += processingTime; maxTimes += maxTime; } //發送字節 paraMap.put(tempid + "_SENDBYTE", bytesSents); //接收字節 paraMap.put(tempid + "_RECIEVEDBYTE", bytesReceiveds); //錯誤個數 paraMap.put(tempid + "_ERRORNUMBER", errorCounts); //請求個數 paraMap.put(tempid + "_REQUESTNUMBER", requestCounts); //處理時間 paraMap.put(tempid + "_TREATMENTTIME", processingTimes); //最大處理時間 paraMap.put(tempid + "_MAXTREATMENTTIME", maxTimes); //----------------- Thread Pool ---------------- ObjectName threadpoolObjName = new ObjectName("Catalina:type=ThreadPool,*"); Set<ObjectName> tp = mbsc.queryNames(threadpoolObjName, null); int currentThreadsBusys = 0; int maxThreadss = 0; for (ObjectName obj : tp) { ObjectName objname = new ObjectName(obj.getCanonicalName()); int currentThreadsBusy = (int) mbsc.getAttribute( objname, "currentThreadsBusy"); int maxThreads = (int) mbsc.getAttribute( objname, "maxThreads"); currentThreadsBusys += currentThreadsBusy; maxThreadss += maxThreads; } //當前忙碌線程數 paraMap.put(tempid + "_CURRENTBUSYTHREADSNUMBER", currentThreadsBusys); //最大線程數 paraMap.put(tempid + "_MAXTHREADSNUMBER", maxThreadss); //----------------- RequestProcessor ---------------- ObjectName requestProcessor1 = new ObjectName("Catalina:type=RequestProcessor,*"); Set<ObjectName> rp = mbsc.queryNames(requestProcessor1, null); long requestProcessingTimes = 0; int portCount = 0; for (ObjectName obj : rp) { portCount++; ObjectName objname = new ObjectName(obj.getCanonicalName()); long requestProcessingTime = (long) mbsc.getAttribute(objname, "requestProcessingTime"); requestProcessingTimes += requestProcessingTime; } //端口平均響應時間 paraMap.put(tempid + "_AVERAGERESPONSETIME", portCount == 0 ? requestProcessingTimes : Math.round(requestProcessingTimes/portCount)); } catch (IOException e) { e.printStackTrace(); } catch (MalformedObjectNameException e) { e.printStackTrace(); } catch (AttributeNotFoundException e) { e.printStackTrace(); } catch (InstanceNotFoundException e) { e.printStackTrace(); } catch (MBeanException e) { e.printStackTrace(); } catch (ReflectionException e) { e.printStackTrace(); } catch (SecurityException e) { e.printStackTrace(); } catch (IllegalArgumentException e) { e.printStackTrace(); } return paraMap; } public static void main(String[] args) { DoJob job = new DoJob(); String tempid = "MW_WS_TOMCAT_AGENT"; job.connector = TomcatUtil.getJMXOfTomcat("service:jmx:rmi:///jndi/rmi://191.168.2.31:8999/jmxrmi", "", ""); ConcurrentHashMap<String, Object> paraMap = new ConcurrentHashMap<String, Object>(); paraMap = job.parseJMS(tempid, paraMap); Iterator<String> it = paraMap.keySet().iterator(); while(it.hasNext()) { String key = it.next(); System.out.println(key + " : " + paraMap.get(key)); } }