使用JMX监控WebLogic 8.x的解决方案

在写WebLogic监控程序的过程中，可以说是相当坎坷，因为因为我要支持监控WebLogic不同版本，而WebLogic不同版本对JMX的支持却有着不小的区别，在网上也没有找到完整的解决方案，所以只能自己一点点的摸索，如今终于拨云见日了，OMG。在此，我们只探讨监控WebLogic 8.x的解决方案，其他版本后续跟进，我会整理出一个完整的文章。为什么监控WebLogic 8.x要先单独写个文章呢——因为8.x跟新的9.x和10.x不一样，刚开始入手会遇到很麻烦的问题。如果我入手之前能看到这篇文章，嘿嘿，那就谢天谢地了。

好了，不啰嗦了，我们开始：

首先第一条，要访问WebLogic Server 8.x的MBeans，必须是在JDK1.4环境下，否则会很麻烦（需要写自己classloader），原因如下：

Java代码 
因为WebLogic 8.x的weblogic.jar中有自己的javax.management包，而JDK1.5中也有javax.management包（以前版本没有），运行时会优先调用JDK1.5中javax.management包里的类，因此产生错误。 
而且weblogic8.x支持JMX 1.0，而JDK1.5支持JMX1.2 。 
  网上有人说通过System.setProperty("jmx.serial.form", "1.0");这样的设置可以解决问题，经试验根本不行。

使用JMX访问WebLogic Server 8.x的MBeans，需要使用的JAR包是weblogic.jar、webservices.jar
可以在%WL_HOME%\server\lib目录下找到。


如果只加入weblogic.jar包，有些API可以访问，但是运行MBeanHome->getAllMBeans()方法获取所有MBean时会抛异常：

Java代码 
weblogic.rjvm.PeerGoneException: ; nested exception is:  
    weblogic.utils.NestedException: Ljavax/xml/soap/SOAPException; - with nested exception: 
[java.lang.NoClassDefFoundError: Ljavax/xml/soap/SOAPException;] 
    at weblogic.rjvm.BasicOutboundRequest.sendReceive(BasicOutboundRequest.java:108) 
    at weblogic.rmi.internal.BasicRemoteRef.invoke(BasicRemoteRef.java:164) 
    at weblogic.management.internal.AdminMBeanHomeImpl_815_WLStub.getAllMBeans(Unknown Source) 
    at cn.chenfeng.jmx.weblogic.ListAllMBeans.main(ListAllMBeans.java:27) 
Caused by: weblogic.utils.NestedException: Ljavax/xml/soap/SOAPException; - with nested exception: 
[java.lang.NoClassDefFoundError: Ljavax/xml/soap/SOAPException;] 
    at weblogic.rjvm.RJVMImpl.gotExceptionReceiving(RJVMImpl.java:967) 
    at weblogic.rjvm.ConnectionManager.gotExceptionReceiving(ConnectionManager.java:930) 
    at weblogic.rjvm.t3.T3JVMConnection.hasException(T3JVMConnection.java:870) 
    at weblogic.socket.SocketMuxer.deliverExceptionAndCleanup(SocketMuxer.java:588) 
    at weblogic.socket.SocketMuxer.deliverHasException(SocketMuxer.java:544) 
    at weblogic.socket.JavaSocketMuxer.processSockets(JavaSocketMuxer.java:306) 
    at weblogic.socket.SocketReaderRequest.execute(SocketReaderRequest.java:32) 
    at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:224) 
    at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:183) 
--------------- nested within: ------------------ 
weblogic.rmi.extensions.RemoteRuntimeException: Unexpected Exception - with nested exception: 
[weblogic.rjvm.PeerGoneException: ; nested exception is:  
    weblogic.utils.NestedException: Ljavax/xml/soap/SOAPException; - with nested exception: 
[java.lang.NoClassDefFoundError: Ljavax/xml/soap/SOAPException;]] 
    at weblogic.management.internal.AdminMBeanHomeImpl_815_WLStub.getAllMBeans(Unknown Source) 
    at cn.chenfeng.jmx.weblogic.ListAllMBeans.main(ListAllMBeans.java:27) 


加入webservices.jar包就可以解决问题了。

下面展示一下我自己跑的Demo


Java代码 
package cn.chenfeng.jmx.weblogic; 
 
import java.util.Iterator; 
import java.util.Set; 
 
import javax.naming.Context; 
 
import weblogic.jndi.Environment; 
import weblogic.management.Helper; 
import weblogic.management.MBeanHome; 
import weblogic.management.WebLogicMBean; 
import weblogic.management.WebLogicObjectName; 
import weblogic.management.runtime.RuntimeMBean; 
 
public class JMXDemo1 { 
 
    public static void main(String[] args) throws Exception { 
 
        final String providerUrl = "t3://192.168.1.2:7001"; 
        final String username = "chenfeng"; 
        final String password = "chenfeng"; 
 
        MBeanHome adminHome = (MBeanHome) Helper.getAdminMBeanHome(username, 
                password, providerUrl); 
        System.out.println("DomainName : " + adminHome.getDomainName()); 
 
        /*
         * 获取MBeanHome的另一个方法，Helper内部就是通过这种方法实现的
         */ 
        { 
            Environment env = new Environment(); 
            env.setProviderUrl(providerUrl); 
            env.setSecurityPrincipal(username); 
            env.setSecurityCredentials(password); 
            Context ctx = env.getInitialContext(); 
 
            MBeanHome localHome2 = (MBeanHome) ctx 
                    .lookup(MBeanHome.LOCAL_JNDI_NAME); 
            MBeanHome adminHome2 = (MBeanHome) ctx 
                    .lookup(MBeanHome.ADMIN_JNDI_NAME); 
            System.out.println("DomainName : " + localHome2.getDomainName()); 
            System.out.println("DomainName : " + adminHome2.getDomainName()); 
        } 
 
        { 
            Set mbeans = adminHome.getMBeansByType("ServerRuntime"); 
            System.out.println("ServerRuntime MBeans : " + mbeans); 
        } 
 
        /*
         * JDBC连接池
         */ 
        { 
            System.out 
                    .println("\n===============获取JDBC连接池信息=================="); 
            Set mbeans = adminHome.getMBeansByType("JDBCConnectionPoolRuntime"); 
            System.out.println("JDBCConnectionPoolRuntime MBeans : " + mbeans); 
 
            Iterator itt = mbeans.iterator(); 
            while (itt.hasNext()) { 
                RuntimeMBean mbean = (RuntimeMBean) itt.next(); 
                String name = mbean.getName(); 
                int count = Integer.parseInt(mbean.getAttribute( 
                        "ActiveConnectionsCurrentCount").toString()); 
                System.out.println("【JDBCConnectionPoolRuntime --> " + name 
                        + " --> ActiveConnectionsCurrentCount】: " + count); 
            } 
        } 
 
        /*
         * 线程池
         */ 
        { 
            System.out.println("\n===============获取线程池信息=================="); 
            Set mbeans = adminHome.getMBeansByType("ThreadPoolRuntime"); 
            System.out.println("ThreadPoolRuntime MBeans : " + mbeans); 
 
            Iterator itt = mbeans.iterator(); 
            while (itt.hasNext()) { 
                RuntimeMBean mbean = (RuntimeMBean) itt.next(); 
                String name = mbean.getName(); 
                int count = Integer.parseInt(mbean.getAttribute( 
                        "ExecuteThreadIdleCount").toString()); 
                System.out.println("【ThreadPoolRuntime --> " + name 
                        + " --> ExecuteThreadIdleCount】: " + count); 
            } 
        } 
 
        /*
         * 获取所有的MBean信息
         */ 
        { 
            System.out 
                    .println("\n===============打印从AdminHome获得的所有MBean=================="); 
            Set allMBeans = adminHome.getAllMBeans(); 
            System.out.println("MBean的总数目：" + allMBeans.size()); 
            for (Iterator itr = allMBeans.iterator(); itr.hasNext();) { 
                WebLogicMBean mbean = (WebLogicMBean) itr.next(); 
                WebLogicObjectName objectName = mbean.getObjectName(); 
                System.out.println(objectName.getName() + " is a(n) " 
                        + mbean.getType()); 
            } 
        } 
 
         
    } 
}