我试图在同一个应用程序中运行两个嵌入式 Tomcat 服务器，但我不断收到“Tomcat”名称已注册为 MBean 的异常。在两个不同的进程中运行两个 Tomcat 服务器工作得很好。就在我尝试在单个进程中运行两个 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，我想运行三个单独的服务器，因为这就是它的方式在现实世界中运行，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，或者甚至完全关闭整个 MBean 注册？
作为记录，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)
最佳答案
最终发现可以通过为添加到 Tomcat 服务器的每个上下文赋予唯一名称(例如，添加要添加到的服务器的端口号)来解决此问题:
context.setName("MyServerContext_" + httpPort);
这导致 MBean 具有不同的名称。
关于java - 在同一个应用程序中运行两个 Tomcat 服务器在 MBean 注册时失败，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/39217903/