Tomcat - 部署应用程序 - 数据源问题

Question

我有一个tomcat容器和两个web应用程序（jhipster应用程序）。第一个仅用于前端部分，第二个用于后端。

在tomcat上我有两个webapps文件夹 - webapps和webapps2。当我试图部署webapps2文件夹前端应用程序，我得到一个错误：

org.springframework.jmx.export.UnableToRegisterMBeanException: Unable to register MBean [HikariDataSource (HikariPool-0)] with key 'dataSource'; nested exception is javax.management.InstanceAlreadyExistsException: com.zaxxer.hikari:name=dataSource,type=HikariDataSource 
at org.springframework.jmx.export.MBeanExporter.registerBeanNameOrInstance(MBeanExporter.java:625) ~[spring-context-4.2.3.RELEASE.jar:4.2.3.RELEASE] 
at org.springframework.jmx.export.MBeanExporter.registerBeans(MBeanExporter.java:550) ~[spring-context-4.2.3.RELEASE.jar:4.2.3.RELEASE] 
at org.springframework.jmx.export.MBeanExporter.afterSingletonsInstantiated(MBeanExporter.java:432) ~[spring-context-4.2.3.RELEASE.jar:4.2.3.RELEASE] 
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:792) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE] 
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:838) ~[spring-context-4.2.3.RELEASE.jar:4.2.3.RELEASE] 
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:537) ~[spring-context-4.2.3.RELEASE.jar:4.2.3.RELEASE] 
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118) ~[spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE] 
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:752) ~[spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE] 
at org.springframework.boot.SpringApplication.doRun(SpringApplication.java:347) ~[spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE] 
at org.springframework.boot.SpringApplication.run(SpringApplication.java:295) ~[spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE] 
at org.springframework.boot.context.web.SpringBootServletInitializer.run(SpringBootServletInitializer.java:149) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE] 
at org.springframework.boot.context.web.SpringBootServletInitializer.createRootApplicationContext(SpringBootServletInitializer.java:129) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE] 
at org.springframework.boot.context.web.SpringBootServletInitializer.onStartup(SpringBootServletInitializer.java:85) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE] 
at org.springframework.web.SpringServletContainerInitializer.onStartup(SpringServletContainerInitializer.java:175) [spring-web-4.2.3.RELEASE.jar:4.2.3.RELEASE] 
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5623) [catalina.jar:7.0.72] 
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) [catalina.jar:7.0.72] 
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:899) [catalina.jar:7.0.72] 
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:875) [catalina.jar:7.0.72] 
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652) [catalina.jar:7.0.72] 
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1092) [catalina.jar:7.0.72] 
at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1984) [catalina.jar:7.0.72] 
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_101] 
at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0_101] 
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_101] 
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_101] 
at java.lang.Thread.run(Thread.java:745) [na:1.8.0_101] 

我有注册两个服务，后端部分工作于8080端口，前端部分的7070，我知道最好的选择是在Apache Web服务器上部署前端应用程序，但在这种情况下，我需要从jhipster项目中选出应用程序，但我没有时间。

有没有人有一个想法这里发生了什么，以及如何解决这个问题？

只是要注意，如果我使用两个tomcat服务器一切正常。

Answer 1

我无法评论，所以我做了一个答案。

这似乎是问题所在。 org.springframework.jmx.export.UnableToRegisterMBeanException：无法使用键'dataSource'注册MBean [HikariDataSource（HikariPool-0）];嵌套异常是javax.management。 InstanceAlreadyExistsException：com.zaxxer.hikari：name = dataSource，type = HikariDataSource

这两个应用程序使用相同的名称似乎存在冲突。可能是两个具有相同名称数据源的bean。