JMX获取Tomcat管理信息

1、首先配置JVM
JVM要放到NTFS卷中,在JVM路径下找到jmxremote.access及jmxremote.password.template两个文件。
将jmxremote.password.template复制一份为jmxremote.password,对运行用户可读,对普通用户不可读。

2、配置Tomcat启动参数
修改catalina.bat,增加下面一行

SET "JAVA_OPTS=%JAVA_OPTS% -Dcom.sun.management.jmxremote.port=8686 -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=true"

3、启动Tomcat

4、客户端程序JMXInfo.java

package com.neohope.jmx.test;

import java.io.IOException;
import java.lang.management.MemoryUsage;
import java.math.BigDecimal;
import java.math.RoundingMode;
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.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 JMXInfo {
	public static void main(String[] args) throws Exception {
		JMXConnector connector = null;
		try {
			// 获取JMX连接
			String ip = "127.0.0.1";
			String port = "8686";
			JMXServiceURL serviceURL = new JMXServiceURL("service:jmx:rmi:///jndi/rmi://" + ip + ":" + port + "/jmxrmi");
			Map<String, String[]> map = new HashMap<String, String[]>();
			String[] credentials = new String[] { "controlRole", "R&D" };
			map.put("jmx.remote.credentials", credentials);
			connector = JMXConnectorFactory.connect(serviceURL, map);
			MBeanServerConnection mbsc = connector.getMBeanServerConnection();

			// 获取JVM信息
			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"));
			
			// 获取JVM运行时间
			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("持续工作时间:" + JMXInfo.formatTimeSpan(timespan));

			// 获取JVM内存信息
			ObjectName heapObjName = new ObjectName("java.lang:type=Memory");
			MemoryUsage heapMemoryUsage = MemoryUsage.from((CompositeDataSupport) mbsc.getAttribute(heapObjName, "HeapMemoryUsage"));
			long heapMaxMemory = heapMemoryUsage.getMax();
			long heapCommitMemory = heapMemoryUsage.getCommitted();
			long heapUsedMemory = heapMemoryUsage.getUsed();
			System.out.println("heap:" + (double) heapUsedMemory * 100 / heapCommitMemory + "%");

			MemoryUsage nonheapMemoryUsage = MemoryUsage.from((CompositeDataSupport) mbsc.getAttribute(heapObjName, "NonHeapMemoryUsage"));
			long nonHeapCommitMemory = nonheapMemoryUsage.getCommitted();
			long nonHeapUsedMemory = heapMemoryUsage.getUsed();
			System.out.println("nonheap:" + (double) nonHeapUsedMemory * 100 / nonHeapCommitMemory + "%");

			ObjectName permObjName = new ObjectName("java.lang:type=MemoryPool,name=Perm Gen");
			MemoryUsage permGenUsage = MemoryUsage.from((CompositeDataSupport) mbsc.getAttribute(permObjName, "Usage"));
			long permCommitted = permGenUsage.getCommitted();
			long permUsed = heapMemoryUsage.getUsed();
			System.out.println("perm gen:" + (double) permUsed * 100 / permCommitted + "%");
			
			// All Domains
			for (int j = 0; j < mbsc.getDomains().length; j++) {
				System.out.println(mbsc.getDomains()[j]);
			}
			
			// All MBeans
			Set<ObjectInstance> MBeanset = mbsc.queryMBeans(null, null);
			System.out.println("MBeanset.size() : " + MBeanset.size());
			Iterator<ObjectInstance> MBeansetIterator = MBeanset.iterator();
			while (MBeansetIterator.hasNext()) {
				ObjectInstance objectInstance = (ObjectInstance) MBeansetIterator.next();
				ObjectName objectName = objectInstance.getObjectName();
				String canonicalName = objectName.getCanonicalName();
				System.out.println("canonicalName : " + canonicalName);
			}
			
			// 全部线程池
			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"));
			}
			
			//HTTP Thread Pool
			ObjectName threadPoolObjName = new ObjectName("Catalina:type=ThreadPool,*");
			Set<ObjectName> threadPoolObjNames = mbsc.queryNames(threadPoolObjName, null);
			for (ObjectName obj : threadPoolObjNames) {
				if (obj.getKeyProperty("name").contains("http")) {
					ObjectName objname = new ObjectName(obj.getCanonicalName());
					System.out.println("HTTP最大线程数:"+ mbsc.getAttribute(objname, "maxThreads").toString());// 最大线程数
					System.out.println("HTTP当前线程数:"+ mbsc.getAttribute(objname, "currentThreadCount").toString());// 当前线程数
					System.out.println("HTTP繁忙线程数:" + mbsc.getAttribute(objname, "currentThreadsBusy").toString());// 繁忙线程数
				}
			}

			// 全部应用
			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"));
			}
			
			
			//RequestProcessor
			ObjectName requestObjName = new ObjectName("Catalina:type=RequestProcessor,*");
			Set<ObjectName> requestObjNameSet = mbsc.queryNames(requestObjName, null);
			Integer aliveSocketsCount = 0;
			Long maxProcessingTime = 0L;
			Long processingTime = 0L;
			Long requstCount = 0L;
			Long errorCount = 0L;
			BigDecimal bytesReceived = BigDecimal.ZERO;
			BigDecimal bytesSend = BigDecimal.ZERO;
			for (ObjectName obj : requestObjNameSet) {
				if (mbsc.getAttribute(obj, "stage").toString().trim().equals("1"))
					aliveSocketsCount++;
				long nowMaxProcessingTime = Long.parseLong(mbsc.getAttribute(obj, "maxTime").toString());
				if (maxProcessingTime < nowMaxProcessingTime)
					maxProcessingTime = nowMaxProcessingTime;
				processingTime += Long.parseLong(mbsc.getAttribute(obj, "processingTime").toString());
				requstCount += Long.parseLong(mbsc.getAttribute(obj, "requestCount").toString());
				errorCount += Long.parseLong(mbsc.getAttribute(obj, "errorCount").toString());
				bytesReceived = bytesReceived.add(new BigDecimal(mbsc.getAttribute(obj, "bytesReceived").toString()));
				bytesSend = bytesSend.add(new BigDecimal(mbsc.getAttribute(obj, "bytesSent").toString()));
			}
			System.out.println("活动sockets计数:"+ aliveSocketsCount.toString());
			System.out.println("最大处理时间:"+ maxProcessingTime.toString());
			processingTime = processingTime / 1000;
			System.out.println("总处理时间:"+ processingTime.toString());
			System.out.println("请求总数:"+ requstCount.toString());
			System.out.println("错误总数:"+ errorCount.toString());
			System.out.println("接收字节数:"+ bytesReceived.divide(new BigDecimal(1024L * 1024))
					.setScale(2, RoundingMode.HALF_UP).toPlainString());
			System.out.println("发送字节数:"+
					bytesSend.divide(new BigDecimal(1024L * 1024)).setScale(2, RoundingMode.HALF_UP).toPlainString());

		} catch (Exception e) {
			e.printStackTrace();
		}
		finally
		{
			if(connector!=null)
			{
				try {
					connector.close();
				} catch (IOException e) {
				}
			}
		}
		
	}

	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小时%3$02d分%4$02d秒%5$03d毫秒", days, hours, mins, seconds, minseconds)
				.toString();
	}
}

5.运行结果

厂商:Oracle Corporation
程序:Java HotSpot(TM) Client VM
版本:24.65-b04
启动时间:2016-06-21 20:57:37
持续工作时间:0天 00小时29分31秒018毫秒
heap:60.11998789417739%
nonheap:54.523986450299915%
perm gen:165.7018025716146%
Users
JMImplementation
com.sun.management
Catalina
java.nio
java.lang
java.util.logging
MBeanset.size() : 150
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/manager,j2eeType=Servlet,name=HTMLManager
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/manager,j2eeType=Servlet,name=Manager
canonicalName : java.lang:type=Memory
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/examples,j2eeType=Servlet,name=stock
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canonicalName : Catalina:context=/host-manager,host=localhost,name=StandardContextValve,type=Valve
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canonicalName : Catalina:context=/examples,host=localhost,name=foo/name1,resourcetype=Context,type=Environment
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/examples,j2eeType=Filter,name=Tomcat WebSocket (JSR356) Filter
canonicalName : Catalina:context=/host-manager,host=localhost,type=WebappClassLoader
canonicalName : java.nio:name=mapped,type=BufferPool
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canonicalName : Catalina:realmPath=/realm0/realm0,type=Realm
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canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/examples,j2eeType=Servlet,name=RequestParamExample
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canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/docs,j2eeType=Filter,name=Tomcat WebSocket (JSR356) Filter
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canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,j2eeType=WebModule,name=//localhost/manager
canonicalName : Catalina:host=localhost,name=StandardHostValve,type=Valve
canonicalName : Users:database=UserDatabase,rolename=manager-gui,type=Role
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/manager,j2eeType=Servlet,name=default
canonicalName : java.lang:name=Perm Gen,type=MemoryPool
canonicalName : Catalina:port=8009,type=Mapper
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/examples,j2eeType=Servlet,name=wsEchoStream
canonicalName : Catalina:context=/docs,host=localhost,type=Loader
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/manager,j2eeType=Servlet,name=jsp
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canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/examples,j2eeType=Servlet,name=wsSnake
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/host-manager,j2eeType=Servlet,name=jsp
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/host-manager,j2eeType=Servlet,name=HostManager
canonicalName : Catalina:name="http-apr-8080",type=GlobalRequestProcessor
canonicalName : Catalina:context=/docs,host=localhost,type=NamingResources
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/examples,j2eeType=Servlet,name=jsp
canonicalName : java.lang:name=Perm Gen [shared-rw],type=MemoryPool
canonicalName : Catalina:context=/,host=localhost,type=Cache
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/examples,j2eeType=Servlet,name=wsChat
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/examples,j2eeType=Servlet,name=CompressionFilterTestServlet
canonicalName : java.lang:name=CodeCacheManager,type=MemoryManager
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/host-manager,j2eeType=Servlet,name=HTMLHostManager
canonicalName : Catalina:host=localhost,type=Host
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/docs,j2eeType=Servlet,name=jsp
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/examples,j2eeType=Servlet,name=HelloWorldExample
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canonicalName : Catalina:name="ajp-apr-8009",type=GlobalRequestProcessor
canonicalName : java.lang:type=Runtime
canonicalName : java.nio:name=direct,type=BufferPool
canonicalName : java.lang:name=Copy,type=GarbageCollector
canonicalName : Catalina:name=HttpRequest3,type=RequestProcessor,worker="http-apr-8080"
canonicalName : Catalina:context=/host-manager,host=localhost,type=Manager
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/manager,name=jsp,type=JspMonitor
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/,name=jsp,type=JspMonitor
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canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,j2eeType=WebModule,name=//localhost/examples
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canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/host-manager,j2eeType=Filter,name=Tomcat WebSocket (JSR356) Filter
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canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/manager,j2eeType=Filter,name=CSRF
canonicalName : Catalina:context=/manager,host=localhost,type=Loader
canonicalName : Users:database=UserDatabase,type=User,username="admin"
canonicalName : Catalina:context=/docs,host=localhost,type=Manager
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canonicalName : Catalina:context=/host-manager,host=localhost,type=NamingResources
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/examples,j2eeType=Servlet,name=async2
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/examples,j2eeType=Servlet,name=async3
canonicalName : Catalina:context=/examples,host=localhost,name=minExemptions,resourcetype=Context,type=Environment
canonicalName : Catalina:context=/manager,host=localhost,type=NamingResources
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/examples,j2eeType=Servlet,name=async0
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canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/examples,j2eeType=Servlet,name=async1
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canonicalName : Catalina:realmPath=/realm0,type=Realm
canonicalName : Catalina:context=/host-manager,host=localhost,type=Loader
canonicalName : Users:database=UserDatabase,rolename=tomcat,type=Role
canonicalName : Catalina:port=8080,type=Mapper
端口名:"ajp-apr-8009"
最大线程数:200
当前线程数:0
繁忙线程数:0
端口名:"http-apr-8080"
最大线程数:200
当前线程数:10
繁忙线程数:0
HTTP最大线程数:200
HTTP当前线程数:10
HTTP繁忙线程数:0
应用名:null
最大会话数:-1
会话数:0
活动会话数:0
应用名:null
最大会话数:-1
会话数:0
活动会话数:0
应用名:null
最大会话数:-1
会话数:0
活动会话数:0
应用名:null
最大会话数:-1
会话数:0
活动会话数:0
应用名:null
最大会话数:-1
会话数:0
活动会话数:0
活动sockets计数:0
最大处理时间:176
总处理时间:0
请求总数:9
错误总数:0
接收字节数:0.00
发送字节数:0.07

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