spring.jmx.enabled属性始终设置为true

Question

现在，我在设置名为spring.jmx.enabled的属性时遇到了一个问题在将spring版本从2.2.7升级到2.7.0时，我们发现了以下错误。

ERROR 2022-09-17 23:27:06 [main] o.s.boot.SpringApplication [tid=] - Application run failed
org.springframework.jmx.export.UnableToRegisterMBeanException: Unable to register MBean [HikariDataSource (some-service-write)] with key 'writeDataSource'; nested exception is javax.management.InstanceAlreadyExistsException: MXBean already registered with name com.zaxxer.hikari:type=PoolConfig (some-service-write)
at org.springframework.jmx.export.MBeanExporter.registerBeanNameOrInstance(MBeanExporter.java:626)
at org.springframework.jmx.export.MBeanExporter.lambda$registerBeans$2(MBeanExporter.java:552)
at java.util.HashMap.forEach(HashMap.java:1289)
at org.springframework.jmx.export.MBeanExporter.registerBeans(MBeanExporter.java:552)
at org.springframework.jmx.export.MBeanExporter.afterSingletonsInstantiated(MBeanExporter.java:435)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:972)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:147)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:734)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:308)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1306)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1295)
at com.company.team.name.some.SomeServiceApplication.main(SomeServiceApplication.java:16)
Caused by: javax.management.InstanceAlreadyExistsException: MXBean already registered with name com.zaxxer.hikari:type=PoolConfig (some-service-write)
at com.sun.jmx.mbeanserver.MXBeanLookup.addReference(MXBeanLookup.java:151)
at com.sun.jmx.mbeanserver.MXBeanSupport.register(MXBeanSupport.java:160)
at com.sun.jmx.mbeanserver.MBeanSupport.preRegister2(MBeanSupport.java:173)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerDynamicMBean(DefaultMBeanServerInterceptor.java:930)
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.springframework.jmx.support.MBeanRegistrationSupport.doRegister(MBeanRegistrationSupport.java:138)
at org.springframework.jmx.export.MBeanExporter.registerBeanInstance(MBeanExporter.java:672)
at org.springframework.jmx.export.MBeanExporter.registerBeanNameOrInstance(MBeanExporter.java:616)
... 14 common frames omitted

我搜索了这个错误，他们中的大多数人都回答了可以通过将spring.jmx.enabled设置为false来解决的问题。但是，我检查了错误是否会继续发生，即使属性更正了此值。

调试时，此值即将实现。

我在Vm Option中注入了类似-Dspring.jmx.enabled=false的属性，但我确认会得到相同的结果。

如何将此值设置为false？

Answer 1

如果您在application.properties中定义：

spring.datasource.hikari.registerMbeans=true

你必须用这个配置禁用默认的Mbean

@Bean
public MBeanExporter exporter() {
final MBeanExporter exporter = new AnnotationMBeanExporter();
exporter.setAutodetect(true);
exporter.setExcludedBeans("dataSource");
return exporter;
}

有关更多详细信息：https://github.com/brettwooldridge/HikariCP/issues/342

Answer 2

确保应用程序配置中没有@EnableMBeanExport。它可以覆盖外部属性。

在此处了解有关此注释的详细信息：https://docs.spring.io/spring-framework/docs/current/javadoc-api/org/springframework/context/annotation/EnableMBeanExport.html

Answer 3

您可以尝试更改默认注册策略，如下所示，它将忽略现有的bean。

@Configuration
@EnableMBeanExport(registration = RegistrationPolicy.IGNORE_EXISTING)
public class MXBeansConfig {
}