Spring Boot 使用监控信息可视化，以便快速查看系统运行情况

主要版本：

•  org.springframework.boot 2.2.4
•  spring-boot-admin-starter-server 2.0.6

运行出现

Description:

Method requestMappingHandlerAdapter in org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration$EnableWebMvcConfiguration required a bean named 'webMvcAsyncTaskExecutor' that could not be found.


Action:

Consider defining a bean named 'webMvcAsyncTaskExecutor' in your configuration.

Disconnected from the target VM, address: '127.0.0.1:55877', transport: 'socket'

Process finished with exit code 1

参考博客https://www.jianshu.com/p/21c32276b2d3

改为依赖为

<dependency>
	<groupId>de.codecentric</groupId>
	<artifactId>spring-boot-admin-starter-server</artifactId>
	<version>2.1.6</version>
</dependency>

出现以下错误

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2020-02-25 22:25:53.420 ERROR 71335 --- [           main] o.s.boot.SpringApplication               : Application run failed

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'adminHandlerMapping' defined in class path resource [de/codecentric/boot/admin/server/config/AdminServerWebConfiguration$ServletRestApiConfirguation.class]: Invocation of init method failed; nested exception is java.lang.StackOverflowError
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1796) ~[spring-beans-5.2.3.RELEASE.jar:5.2.3.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:595) ~[spring-beans-5.2.3.RELEASE.jar:5.2.3.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) ~[spring-beans-5.2.3.RELEASE.jar:5.2.3.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) ~[spring-beans-5.2.3.RELEASE.jar:5.2.3.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory$$Lambda$142/428039780.getObject(Unknown Source) ~[na:na]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.2.3.RELEASE.jar:5.2.3.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) ~[spring-beans-5.2.3.RELEASE.jar:5.2.3.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-5.2.3.RELEASE.jar:5.2.3.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:879) ~[spring-beans-5.2.3.RELEASE.jar:5.2.3.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) ~[spring-context-5.2.3.RELEASE.jar:5.2.3.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) ~[spring-context-5.2.3.RELEASE.jar:5.2.3.RELEASE]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) ~[spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) [spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) [spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]
	at com.kxg.spadmin.SpadminApplication.main(SpadminApplication.java:14) [classes/:na]
Caused by: java.lang.StackOverflowError: null
	at de.codecentric.boot.admin.server.web.servlet.AdminControllerHandlerMapping.withPrefix(AdminControllerHandlerMapping.java:48) ~[spring-boot-admin-server-2.1.6.jar:2.1.6]
	at de.codecentric.boot.admin.server.web.servlet.AdminControllerHandlerMapping.registerHandlerMethod(AdminControllerHandlerMapping.java:44) ~[spring-boot-admin-server-2.1.6.jar:2.1.6]
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping.registerHandlerMethod(RequestMappingHandlerMapping.java:67) ~[spring-webmvc-5.2.3.RELEASE.jar:5.2.3.RELEASE]
	at de.codecentric.boot.admin.server.web.servlet.AdminControllerHandlerMapping.registerHandlerMethod(AdminControllerHandlerMapping.java:44) ~[spring-boot-admin-server-2.1.6.jar:2.1.6]

通过信息依然可以判定是版本问题，查看官网

https://codecentric.github.io/spring-boot-admin/current/

加入官网中的依赖信息

<dependency>
    <groupId>de.codecentric</groupId>
    <artifactId>spring-boot-admin-starter-server</artifactId>
    <version>2.2.0-SNAPSHOT</version>
</dependency>

会发现加载不了的情况

修改为 ：

<dependency>
    <groupId>de.codecentric</groupId>
    <artifactId>spring-boot-admin-starter-server</artifactId>
    <version>2.2.0</version>
</dependency>

这样 就可以正常运行了，网上很多博客多是2.2.0以下版本的设置，解决不了问题，还是 细看错误提示信息进行判定！