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JMX获取Tomcat管理信息

Posted on 2016/06/21 by neohope — No Comments ↓

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
canonicalName : JMImplementation:type=MBeanServerDelegate
canonicalName : Catalina:context=/host-manager,host=localhost,name=StandardContextValve,type=Valve
canonicalName : Catalina:port=8080,type=Connector
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
canonicalName : java.lang:name=MarkSweepCompact,type=GarbageCollector
canonicalName : Catalina:context=/manager,host=localhost,name=StandardContextValve,type=Valve
canonicalName : Catalina:context=/examples,host=localhost,name=name3,resourcetype=Context,type=Environment
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/,j2eeType=Filter,name=Tomcat WebSocket (JSR356) Filter
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/examples,j2eeType=Servlet,name=default
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/,j2eeType=Servlet,name=jsp
canonicalName : Catalina:host=localhost,name=ErrorReportValve,type=Valve
canonicalName : Catalina:context=/host-manager,host=localhost,type=Cache
canonicalName : java.lang:name=Tenured Gen,type=MemoryPool
canonicalName : Catalina:context=/manager,host=localhost,name=BasicAuthenticator,type=Valve
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/manager,j2eeType=Filter,name=Tomcat WebSocket (JSR356) Filter
canonicalName : Catalina:type=Engine
canonicalName : Catalina:context=/,host=localhost,type=Manager
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/manager,j2eeType=Servlet,name=JMXProxy
canonicalName : Catalina:context=/docs,host=localhost,type=WebappClassLoader
canonicalName : java.lang:name=Code Cache,type=MemoryPool
canonicalName : java.util.logging:type=Logging
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/examples,name=jsp,type=JspMonitor
canonicalName : Catalina:realmPath=/realm0/realm0,type=Realm
canonicalName : Catalina:name=StandardEngineValve,type=Valve
canonicalName : Catalina:port=8009,type=ProtocolHandler
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/examples,j2eeType=Servlet,name=RequestParamExample
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,j2eeType=WebModule,name=//localhost/
canonicalName : Catalina:context=/manager,host=localhost,type=Manager
canonicalName : Catalina:context=/host-manager,host=localhost,name=BasicAuthenticator,type=Valve
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/examples,j2eeType=Filter,name=Set Character Encoding
canonicalName : Catalina:context=/,host=localhost,type=NamingResources
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/examples,j2eeType=Filter,name=Request Dumper Filter
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/examples,j2eeType=Servlet,name=ServletToJsp
canonicalName : Catalina:name=HttpRequest1,type=RequestProcessor,worker="http-apr-8080"
canonicalName : java.lang:type=Compilation
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/host-manager,j2eeType=Filter,name=SetCharacterEncoding
canonicalName : java.lang:name=Survivor Space,type=MemoryPool
canonicalName : Catalina:port=8080,type=ProtocolHandler
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/examples,j2eeType=Servlet,name=ChatServlet
canonicalName : Catalina:context=/examples,host=localhost,type=WebappClassLoader
canonicalName : Catalina:context=/examples,host=localhost,name=foo/bar/name2,resourcetype=Context,type=Environment
canonicalName : Catalina:type=StringCache
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/docs,j2eeType=Filter,name=Tomcat WebSocket (JSR356) Filter
canonicalName : java.lang:type=Threading
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/manager,j2eeType=Servlet,name=Status
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
canonicalName : Catalina:context=/examples,host=localhost,name=FormAuthenticator,type=Valve
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
canonicalName : Catalina:name=HttpRequest2,type=RequestProcessor,worker="http-apr-8080"
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
canonicalName : Catalina:host=localhost,name=AccessLogValve,type=Valve
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,j2eeType=WebModule,name=//localhost/examples
canonicalName : Catalina:name="ajp-apr-8009",type=ThreadPool
canonicalName : Catalina:type=Service
canonicalName : com.sun.management:type=HotSpotDiagnostic
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/,j2eeType=Servlet,name=default
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/host-manager,j2eeType=Filter,name=Tomcat WebSocket (JSR356) Filter
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/docs,j2eeType=Servlet,name=default
canonicalName : Catalina:context=/,host=localhost,type=WebappClassLoader
canonicalName : java.lang:type=OperatingSystem
canonicalName : Catalina:context=/examples,host=localhost,name=StandardContextValve,type=Valve
canonicalName : Catalina:type=Server
canonicalName : Catalina:port=8009,type=Connector
canonicalName : Catalina:name="http-apr-8080",type=ThreadPool
canonicalName : Catalina:context=/,host=localhost,name=StandardContextValve,type=Valve
canonicalName : Catalina:class=org.apache.catalina.UserDatabase,name="UserDatabase",resourcetype=Global,type=Resource
canonicalName : Catalina:context=/manager,host=localhost,type=WebappClassLoader
canonicalName : Catalina:context=/examples,host=localhost,type=Manager
canonicalName : Catalina:context=/examples,host=localhost,type=Cache
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,j2eeType=WebModule,name=//localhost/host-manager
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,j2eeType=WebModule,name=//localhost/docs
canonicalName : Users:database=UserDatabase,type=UserDatabase
canonicalName : Catalina:context=/examples,host=localhost,name=foo/name4,resourcetype=Context,type=Environment
canonicalName : Catalina:context=/docs,host=localhost,name=StandardContextValve,type=Valve
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/examples,j2eeType=Filter,name=Compression Filter
canonicalName : Catalina:type=NamingResources
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/examples,j2eeType=Servlet,name=SessionExample
canonicalName : Catalina:context=/,host=localhost,type=Loader
canonicalName : Catalina:name=common,type=ServerClassLoader
canonicalName : Catalina:context=/examples,host=localhost,type=Loader
canonicalName : Catalina:context=/manager,host=localhost,type=Cache
canonicalName : Catalina:context=/docs,host=localhost,type=Cache
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/host-manager,j2eeType=Filter,name=CSRF
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/examples,j2eeType=Servlet,name=CookieExample
canonicalName : Users:database=UserDatabase,type=User,username="tomcat"
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/manager,j2eeType=Filter,name=SetCharacterEncoding
canonicalName : Catalina:host=localhost,type=Deployer
canonicalName : Catalina:type=MBeanFactory
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/examples,j2eeType=Servlet,name=RequestInfoExample
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/examples,j2eeType=Filter,name=Timing filter
canonicalName : Catalina:context=/examples,host=localhost,type=NamingResources
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/host-manager,j2eeType=Servlet,name=default
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
canonicalName : java.lang:name=Eden Space,type=MemoryPool
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/examples,j2eeType=Servlet,name=RequestHeaderExample
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/docs,name=jsp,type=JspMonitor
canonicalName : java.lang:name=Perm Gen [shared-ro],type=MemoryPool
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/host-manager,name=jsp,type=JspMonitor
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
canonicalName : java.lang:type=ClassLoading
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/examples,j2eeType=Servlet,name=async1
canonicalName : Catalina:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/examples,j2eeType=Servlet,name=wsEchoMessage
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

Tomcat指定native library路径

Posted on 2016/04/19 by neohope — No Comments ↓

一般，指定JVM的native library路径，只需要用下面的参数就好了

-Djava.library.path=PATH_TO_NATIVE_LIBRARY

Tomcat指定native library路径时，还是不要使用这边参数的好。
建议直接修改PATH环境变量，将dll或so放到环境变量PATH的路径下就好了。
TOMCAT默认将PATH赋值给-Djava.library.path参数的。

Redis与Tomcat集群集成

Posted on 2016/01/19 by neohope — No Comments ↓

在网站访问量急剧上升时，通常需要使用集群的方法进行横向扩展。
对于没有状态的应用来说，直接用nginx进行处理即可。
但对于有状态的应用来说，比如登录状态等，除了使用nginx进行扩展外，就需要考虑到Session共享的问题了。

大家知道可以用apache+tomcat来实现Session共享，但效率太低了，而且容易出错。
今天说的主要是用nginx+tomcat+redis+tomcat-redis-session-manager的方式实现共享。
原理比较简单：

1、tomcat-redis-session-manage扩展了
org.apache.catalina.valves.ValveBase;
org.apache.catalina.session.ManagerBase;
org.apache.catalina.session.StandardSession;
并通过Tomcat配置，替代了这几个类。

2、Set属性时，用session id作为key，将Tomcat的整个Session拆分为SessionSerializationMetadata+RedisSession然后序列化为byte[]，存放到Redis。

3、Get属性时，用session id作为key，从Redis获取byte[]，然后反序列化为SessionSerializationMetadata+RedisSession，供Tomcat使用。

配置也很简单：
1、从github下载源码tomcat-redis-session-manager

2、用gradle进行编译

#master分支下面，要把signing段和uploadArchives段删掉，才能正常编译
#release就不需要了
gradle build

3、将三个Jar包拷贝到Tomcat的lib文件夹下

#%TOMCAT_HOME%/lib
tomcat-redis-session-manager-master-2.0.0.jar
commons-pool2-2.2.jar
jedis-2.5.2.jar

4、修改context.xml配置文件，新增下面内容就搞定咯

<!--%TOMCAT_HOME%/conf/context.xml-->
  <Valve className="com.orangefunction.tomcat.redissessions.RedisSessionHandlerValve" />
  <Manager className="com.orangefunction.tomcat.redissessions.RedisSessionManager" 
  host="localhost" port="6379" database="0" maxInactiveInterval="60"/>

好处是：不需要修改应用
坏处是：要耗费一定的时间来（序列化+保存到Redis）、（反序列化+从Redis读取）。

IIS开启程序集绑定日志

Posted on 2015/03/25 by neohope — No Comments ↓

最近，将一个AnyCPU+Win32的程序，调整到了x64架构，但一直各种绑定失败。
IIS7一直提示要开启程序就绑定日志：

警告: 程序集绑定日志记录被关闭。
要启用程序集绑定失败日志记录，请将注册表值 [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD)设置为 1。
注意: 会有一些与程序集绑定失败日志记录关联的性能损失。
要关闭此功能，请移除注册表值 [HKLM\Software\Microsoft\Fusion!EnableLog]。

好吧，命令行搞定

reg add HKLM\software\microsoft\fusion /v Enablelog /t REG_DWORD /d 1

然后，IIS7仍然坚持不懈的提示绑定失败。提示dll格式不正确。
弄了一个多小时，发现应用程序池的“Enable 32-Bit Applications”选项打开了，晕死。
关闭之，搞定！！！

PS：
按网上的说法，Fuslogvw.exe可以查看绑定失败的日志。但我打开后没有哦，以后再试试看。

IIS程序访问NAS

Posted on 2015/01/30 by neohope — No Comments ↓

IIS程序访问NAS，一般有两种情况，加域和没加域
1、加域后，什么都好办，可以通过两种方式认证
A、采用域帐户认证
B、NAS资源可以直接授权给指定计算机访问

2、不加域，那一般有三种方式设置访问权限
A、通过指定程序的用户名和密码访问（这里指定的不是本地的用户名和密码，而是NAS的用户名和密码）
B、不指定用户名和密码，直接通过pass-through authentication方式访问，其规则为：
首先通过用户的真实id进行验证
如果用户没有授权，会尝试使用应用池的账户进行验证
如果应用池账号为NetworkService或LocalSystem，将使用计算机账号进行验证
采取这样的方式IIS会提出警告，因为IIS只有在运行之后，才知道能否访问NAS
C、通过代码实现

    //NAS访问封装类
    public class NetworkDrive
    {
        public enum ResourceScope
        {
            RESOURCE_CONNECTED = 1,
            RESOURCE_GLOBALNET,
            RESOURCE_REMEMBERED,
            RESOURCE_RECENT,
            RESOURCE_CONTEXT
        }

        public enum ResourceType
        {
            RESOURCETYPE_ANY,
            RESOURCETYPE_DISK,
            RESOURCETYPE_PRINT,
            RESOURCETYPE_RESERVED
        }

        public enum ResourceUsage
        {
            RESOURCEUSAGE_CONNECTABLE = 0x00000001,
            RESOURCEUSAGE_CONTAINER = 0x00000002,
            RESOURCEUSAGE_NOLOCALDEVICE = 0x00000004,
            RESOURCEUSAGE_SIBLING = 0x00000008,
            RESOURCEUSAGE_ATTACHED = 0x00000010,
            RESOURCEUSAGE_ALL = (RESOURCEUSAGE_CONNECTABLE | RESOURCEUSAGE_CONTAINER | RESOURCEUSAGE_ATTACHED),
        }

        public enum ResourceDisplayType
        {
            RESOURCEDISPLAYTYPE_GENERIC,
            RESOURCEDISPLAYTYPE_DOMAIN,
            RESOURCEDISPLAYTYPE_SERVER,
            RESOURCEDISPLAYTYPE_SHARE,
            RESOURCEDISPLAYTYPE_FILE,
            RESOURCEDISPLAYTYPE_GROUP,
            RESOURCEDISPLAYTYPE_NETWORK,
            RESOURCEDISPLAYTYPE_ROOT,
            RESOURCEDISPLAYTYPE_SHAREADMIN,
            RESOURCEDISPLAYTYPE_DIRECTORY,
            RESOURCEDISPLAYTYPE_TREE,
            RESOURCEDISPLAYTYPE_NDSCONTAINER
        }

        [StructLayout(LayoutKind.Sequential)]
        private class NETRESOURCE
        {
            public ResourceScope dwScope = 0;
            public ResourceType dwType = 0;
            public ResourceDisplayType dwDisplayType = 0;
            public ResourceUsage dwUsage = 0;
            public string lpLocalName = null;
            public string lpRemoteName = null;
            public string lpComment = null;
            public string lpProvider = null;
        }

        [DllImport("mpr.dll")]
        private static extern int WNetAddConnection2(NETRESOURCE lpNetResource, string lpPassword, string lpUsername, int dwFlags);

        public static int MapNetworkDrive(string remotePath, string localDrive, string userName, string passWord)
        {
            NETRESOURCE myNetResource = new NETRESOURCE();
            myNetResource.lpLocalName = localDrive;
            myNetResource.lpRemoteName = remotePath;
            myNetResource.lpProvider = null;
            int result = WNetAddConnection2(myNetResource, passWord, userName, 0);
            return result;
        }
    }

    //调用示例
    NetworkDrive.MapNetworkDrive("NAS paht with ip", "Local Driver Letter", "user", "password");

参考资料：
What is “pass-through authentication” in IIS 7?

Build Jetty Lesson101

Posted on 2014/08/05 by neohope — No Comments ↓

1. Download source code from Eclipse.
For example, I used this one:

From here: http://download.eclipse.org/jetty/
Get this one: jetty-8.1.15.v20140411

2. Read this:

http://docs.codehaus.org/display/JETTY/Building+from+Source

3. Prepare JDK and Maven:

SET JAVA_HOME=C:\Languages\Java\JDK\jdk_x86_1.6.0_34
SET MAVEN_HOME=C:\Languages\Java\JavaTools\apache-maven-3.0.4
SET PATH=%MAVEN_HOME%\bin;%JAVA_HOME%\bin;%PATH%
CMD

4. Run “mvn install”

5. Use eclipse to import maven project

IIS7.5不支持.Net4.0

Posted on 2014/08/02 by neohope — No Comments ↓

由于先安装了.Net 4.0，然后才启用IIS7.5，导致IIS只支持.NET 2.0。
这时，需要手工向IIS注册一下.Net 4.0。

"%WINDIR%\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe" -iru -enable

Build Tomcat Lesson101

Posted on 2014/07/30 by neohope — No Comments ↓

1. Download one source tag from Apache
For example, I used this tag:

http://svn.apache.org/repos/asf/tomcat/tc6.0.x/tags/TOMCAT_6_0_41

2. Read this:

http://tomcat.apache.org/tomcat-6.0-doc/building.html

3. Prepare JDK and Ant

SET JAVA_HOME=C:\Languages\Java\JDK\jdk_x86_1.6.0_34
SET ANT_HOME=C:\Languages\Java\JavaTools\apache-ant-1.9.0
SET PATH=%ANT_HOME%\bin;%JAVA_HOME%\bin;%PATH%
CMD

4. Copy build.properties.default to build.properties

5. Edit build.properties and set base.path

base.path=the path to store thirdpart libs

6. Run “Ant download”

7. Run “Ant”

8. Rename files

move eclipse.classpath .classpath
move eclipse.project .project

9. Use eclipse to import this project

10. Set break point and debug

Tomcat强制使用HTTPS

Posted on 2014/02/27 by neohope — No Comments ↓

配置好Tomcat的SSL后，强制使用HTTPS方法如下：

1、全局强制HTTPS
修改%tomcat_home%\conf\web.xml，在文件底部，后面加上这样一段：

    <login-config>  
        <!-- Authorization setting for SSL -->  
        <auth-method>CLIENT-CERT</auth-method>  
        <realm-name>Client Cert Users-only Area</realm-name>  
    </login-config>  
    <security-constraint>  
        <!-- Authorization setting for SSL -->  
        <web-resource-collection >  
            <web-resource-name >SSL</web-resource-name>  
            <url-pattern>/*</url-pattern>  
        </web-resource-collection>  
        <user-data-constraint>  
            <transport-guarantee>CONFIDENTIAL</transport-guarantee>  
        </user-data-constraint>  
    </security-constraint>

2、某个webapp强制使用HTTPS
编辑该webapp的web.xml文件，增加以下内容：

	<security-constraint>
	    <web-resource-collection>
	        <web-resource-name>securedapp</web-resource-name>
	        <url-pattern>/*</url-pattern>
	    </web-resource-collection>
	    <user-data-constraint>
	        <transport-guarantee>CONFIDENTIAL</transport-guarantee>
	    </user-data-constraint>
	</security-constraint>

关闭 SSL，只需要将CONFIDENTIAL改为NONE即可。

Category Archives: WebServer

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