Question

我试图在同一个应用程序中运行两个嵌入式Tomcat服务器，但我不断得到＃34; Tomcat＆＃34; name已经注册为MBean。在两个不同的进程中运行两个Tomcat服务器就可以了。就在我尝试在一个进程中运行两个Tomcat服务器时。

我有理由不想在同一个Tomcat服务器实例中创建两个连接器，简而言之，我正在运行需要启动三个服务器的单元测试，而我想运行三个独立的服务器，因为那个＆＃39 ;它是在现实世界中运行的方式，而不是在具有多个连接器的单个服务器中运行。

我想知道是否有任何方法可以更改Tomcat服务器用于MBean注册的名称，甚至只是将整个MBean注册完全关闭？

对于记录，下面是我在同一进程中启动两个Tomcat实例时获得的堆栈跟踪：

SEVERE: Error registering Tomcat:j2eeType=Servlet,name=gor,WebModule=//localhost/gorserver,J2EEApplication=none,J2EEServer=none
javax.management.InstanceAlreadyExistsException: Tomcat:j2eeType=Servlet,name=gor,WebModule=//localhost/gorserver,J2EEApplication=none,J2EEServer=none
    at com.sun.jmx.mbeanserver.Repository.addMBean(Repository.java:437)
    at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerWithRepository(DefaultMBeanServerInterceptor.java:1898)
    at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerDynamicMBean(DefaultMBeanServerInterceptor.java:966)
    at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerObject(DefaultMBeanServerInterceptor.java:900)
    at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:324)
    at com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:522)
    at org.apache.tomcat.util.modeler.Registry.registerComponent(Registry.java:742)
    at org.apache.catalina.util.LifecycleMBeanBase.register(LifecycleMBeanBase.java:158)
    at org.apache.catalina.util.LifecycleMBeanBase.initInternal(LifecycleMBeanBase.java:61)
    at org.apache.catalina.core.ContainerBase.initInternal(ContainerBase.java:1080)
    at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:136)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5508)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1571)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1561)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)

Aug 30, 2016 2:20:57 AM org.apache.catalina.util.LifecycleMBeanBase register
WARNING: Failed to register object [StandardEngine[Tomcat].StandardHost[localhost].StandardContext[/gorserver].StandardWrapper[gor]] with name [Tomcat:j2eeType=Servlet,name=gor,WebModule=//localhost/gorserver,J2EEApplication=none,J2EEServer=none] during component initialisation
javax.management.InstanceAlreadyExistsException: Tomcat:j2eeType=Servlet,name=gor,WebModule=//localhost/gorserver,J2EEApplication=none,J2EEServer=none
    at com.sun.jmx.mbeanserver.Repository.addMBean(Repository.java:437)
    at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerWithRepository(DefaultMBeanServerInterceptor.java:1898)
    at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerDynamicMBean(DefaultMBeanServerInterceptor.java:966)
    at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerObject(DefaultMBeanServerInterceptor.java:900)
    at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:324)
    at com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:522)
    at org.apache.tomcat.util.modeler.Registry.registerComponent(Registry.java:742)
    at org.apache.catalina.util.LifecycleMBeanBase.register(LifecycleMBeanBase.java:158)
    at org.apache.catalina.util.LifecycleMBeanBase.initInternal(LifecycleMBeanBase.java:61)
    at org.apache.catalina.core.ContainerBase.initInternal(ContainerBase.java:1080)
    at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:136)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5508)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1571)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1561)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)

Answer 1

最终发现可以通过为每个添加到Tomcat服务器的上下文赋予唯一名称来修复此问题（例如，添加要添加到的服务器的端口号）：

context.setName("MyServerContext_" + httpPort);

这导致MBean具有不同的名称。

在MBean注册上，在同一应用程序中运行两个Tomcat服务器失败

1 个答案: