Question

我正在尝试在单个tomcat服务器实例中部署两个战争。但它正在抛出错误。有人可以帮忙吗？ PFB错误日志。

19：39：28,294 ERROR pool-2-thread-1 context.ContextLoader：220 - 上下文初始化失败 org.springframework.context.ApplicationContextException：无法启动bean＆＃39; batchMBeanExporter＆＃39 ;;嵌套异常是org.springframework.jmx.export.UnableToRegisterMBeanException：无法使用key＆＃39; spring.application注册MBean [org.springframework.batch.admin.jmx.SimpleJobExecutionMetrics@1f069c]：type = JobExecution，name = DATSFileFeeds＆＃ 39 ;;嵌套异常是javax.management.InstanceAlreadyExistsException：spring.application：type = JobExecution，name = DATSFileFeeds 在org.springframework.context.support.DefaultLifecycleProcessor.doStart（DefaultLifecycleProcessor.java:169）在org.springframework.context.support.DefaultLifecycleProcessor.access $ 1（DefaultLifecycleProcessor.java:154）在org.springframework.context.support.DefaultLifecycleProcessor $ LifecycleGroup.start（DefaultLifecycleProcessor.java:335）在org.springframework.context.support.DefaultLifecycleProcessor.startBeans（DefaultLifecycleProcessor.java:143）在org.springframework.context.support.DefaultLifecycleProcessor.onRefresh（DefaultLifecycleProcessor.java:108）在org.springframework.context.support.AbstractApplicationContext.finishRefresh（AbstractApplicationContext.java:908）在org.springframework.context.support.AbstractApplicationContext.refresh（AbstractApplicationContext.java:428）在org.springframework.web.context.ContextLoader.createWebApplicationContext（ContextLoader.java:276）在org.springframework.web.context.ContextLoader.initWebApplicationContext（ContextLoader.java:197）在org.springframework.web.context.ContextLoaderListener.contextInitialized（ContextLoaderListener.java:47）在org.apache.catalina.core.StandardContext.listenerStart（StandardContext.java:4779） at org.apache.catalina.core.StandardContext.startInternal（StandardContext.java:5273）在org.apache.catalina.util.LifecycleBase.start（LifecycleBase.java:150）在org.apache.catalina.core.ContainerBase.addChildInternal（ContainerBase.java:897）在org.apache.catalina.core.ContainerBase.addChild（ContainerBase.java:873）在org.apache.catalina.core.StandardHost.addChild（StandardHost.java:615）在org.apache.catalina.startup.HostConfig.deployWAR（HostConfig.java:958）在org.apache.catalina.startup.HostConfig $ DeployWar.run（HostConfig.java:1599） at java.util.concurrent.Executors $ RunnableAdapter.call（Executors.java:471）在java.util.concurrent.FutureTask.run（FutureTask.java:262）在java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1145） at java.util.concurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:615）在java.lang.Thread.run（Thread.java:744）引起：org.springframework.jmx.export.UnableToRegisterMBeanException：无法使用key＆＃39; spring.application注册MBean [org.springframework.batch.admin.jmx.SimpleJobExecutionMetrics@1f069c]：type = JobExecution，name = DATSFileFeeds＆＃ 39 ;;嵌套异常是javax.management.InstanceAlreadyExistsException：spring.application：type = JobExecution，name = DATSFileFeeds 在org.springframework.jmx.export.MBeanExporter.registerBeanNameOrInstance（MBeanExporter.java:602）在org.springframework.batch.admin.jmx.BatchMBeanExporter.registerJobs（BatchMBeanExporter.java:190）在org.springframework.batch.admin.jmx.BatchMBeanExporter.doStart（BatchMBeanExporter.java:353）在org.springframework.batch.admin.jmx.BatchMBeanExporter.start（BatchMBeanExporter.java:307）在org.springframework.context.support.DefaultLifecycleProcessor.doStart（DefaultLifecycleProcessor.java:166） ......还有22个引起：javax.management.InstanceAlreadyExistsException：spring.application：type = JobExecution，name = DATSFileFeeds 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）在org.springframework.jmx.support.MBeanRegistrationSupport.doRegister（MBeanRegistrationSupport.java:169）在org.springframework.jmx.export.MBeanExporter.registerBeanInstance（MBeanExporter.java:655）在org.springframework.jmx.export.MBeanExporter.registerBeanNameOrInstance（MBeanExporter.java:598） ......还有26个

Answer 1

您可以使用MBeanRegistrationSupport#setRegistrationPolicy方法配置MBean注册的行为。

目前有三项政策：

FAIL_ON_EXISTING - 尝试时注册失败以已存在的名称注册MBean。
IGNORE_EXISTING - 在尝试以已经使用的名称注册MBean时，注册应该忽略受影响的MBean 存在。
REPLACE_EXISTING - 在尝试以已经使用的名称注册MBean时，注册应该替换受影响的MBean 存在。

Answer 2

您可以有条件地注册MBean：

//Get the MBean server
MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
//register the MBean
number = new NumberOfSomething();
ObjectName name = new ObjectName("ru.pochta.abon.mbean:type=NumberOfSomething");
if (!mbs.isRegistered(name)) {
    mbs.registerMBean(number, name);
}

javax.management.InstanceAlreadyExistsException：spring.application：type = JobExecution，name = DATSFileFeeds

2 个答案: