我试图启动Spring Boot应用程序并在启动时出现以下错误。试图通过删除整个.m2文件夹进行构建，但是仍然存在相同的问题。
我是今年春季的微服务新手，请帮忙。
我使用Spring Boot尝试启动服务器并运行，这在Eclipse控制台中给出了异常。
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;
@SpringBootApplication
@EnableEurekaServer
public class DiscoveryMicroserviceServerApplication {
public static void main(String[] args) {
SpringApplication.run(DiscoveryMicroserviceServerApplication.class, args);
}
}
例外：
2018-10-04 20:07:09.558 ERROR 54172 --- [ost-startStop-1] o.s.b.web.embedded.tomcat.TomcatStarter : Error starting Tomcat context. Exception: org.springframework.beans.factory.BeanCreationException. Message: Error creating bean with name 'servletEndpointRegistrar' defined in class path resource [org/springframework/boot/actuate/autoconfigure/endpoint/web/ServletEndpointManagementContextConfiguration$WebMvcServletEndpointManagementContextConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.actuate.endpoint.web.ServletEndpointRegistrar]: Factory method 'servletEndpointRegistrar' threw exception; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'gatewayControllerEndpoint' defined in class path resource [org/springframework/cloud/gateway/config/GatewayAutoConfiguration$GatewayActuatorConfiguration.class]: Unsatisfied dependency expressed through method 'gatewayControllerEndpoint' parameter 2; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'hystrixGatewayFilterFactory' defined in class path resource [org/springframework/cloud/gateway/config/GatewayAutoConfiguration$HystrixConfiguration.class]: Unsatisfied dependency expressed through method 'hystrixGatewayFilterFactory' parameter 0; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'org.springframework.web.reactive.DispatcherHandler' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {}
2018-10-04 20:07:09.599 INFO 54172 --- [ main] o.apache.catalina.core.StandardService : Stopping service [Tomcat]
2018-10-04 20:07:09.605 WARN 54172 --- [ost-startStop-1] o.a.c.loader.WebappClassLoaderBase : The web application [ROOT] appears to have started a thread named [reactor-http-nio-1] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
sun.nio.ch.KQueueArrayWrapper.kevent0(Native Method)
sun.nio.ch.KQueueArrayWrapper.poll(KQueueArrayWrapper.java:198)
sun.nio.ch.KQueueSelectorImpl.doSelect(KQueueSelectorImpl.java:117)
sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)
sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
io.netty.channel.nio.SelectedSelectionKeySetSelector.select(SelectedSelectionKeySetSelector.java:62)
io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:737)
io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:392)
io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)
java.lang.Thread.run(Thread.java:748)
2018-10-04 20:07:09.606 WARN 54172 --- [ost-startStop-1] o.a.c.loader.WebappClassLoaderBase : The web application [ROOT] appears to have started a thread named [reactor-http-nio-2] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
sun.nio.ch.KQueueArrayWrapper.kevent0(Native Method)
sun.nio.ch.KQueueArrayWrapper.poll(KQueueArrayWrapper.java:198)
sun.nio.ch.KQueueSelectorImpl.doSelect(KQueueSelectorImpl.java:117)
sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)
sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
io.netty.channel.nio.SelectedSelectionKeySetSelector.select(SelectedSelectionKeySetSelector.java:62)
io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:737)
io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:392)
io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)
java.lang.Thread.run(Thread.java:748)
2018-10-04 20:07:09.606 WARN 54172 --- [ost-startStop-1] o.a.c.loader.WebappClassLoaderBase : The web application [ROOT] appears to have started a thread named [reactor-http-nio-3] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
sun.nio.ch.KQueueArrayWrapper.kevent0(Native Method)
sun.nio.ch.KQueueArrayWrapper.poll(KQueueArrayWrapper.java:198)
sun.nio.ch.KQueueSelectorImpl.doSelect(KQueueSelectorImpl.java:117)
sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)
sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
io.netty.channel.nio.SelectedSelectionKeySetSelector.select(SelectedSelectionKeySetSelector.java:62)
io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:737)
io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:392)
io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)
java.lang.Thread.run(Thread.java:748)
2018-10-04 20:07:09.606 WARN 54172 --- [ost-startStop-1] o.a.c.loader.WebappClassLoaderBase : The web application [ROOT] appears to have started a thread named [reactor-http-nio-4] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
sun.nio.ch.KQueueArrayWrapper.kevent0(Native Method)
sun.nio.ch.KQueueArrayWrapper.poll(KQueueArrayWrapper.java:198)
sun.nio.ch.KQueueSelectorImpl.doSelect(KQueueSelectorImpl.java:117)
sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)
sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
io.netty.channel.nio.SelectedSelectionKeySetSelector.select(SelectedSelectionKeySetSelector.java:62)
io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:737)
io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:392)
io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)
java.lang.Thread.run(Thread.java:748)
2018-10-04 20:07:09.609 WARN 54172 --- [ main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.context.ApplicationContextException: Unable to start web server; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat
2018-10-04 20:07:09.636 INFO 54172 --- [ main] ConditionEvaluationReportLoggingListener :
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2018-10-04 20:07:09.842 ERROR 54172 --- [ main] o.s.b.d.LoggingFailureAnalysisReporter :
***************************
APPLICATION FAILED TO START
***************************
Description:
Parameter 0 of method hystrixGatewayFilterFactory in org.springframework.cloud.gateway.config.GatewayAutoConfiguration$HystrixConfiguration required a bean of type 'org.springframework.web.reactive.DispatcherHandler' that could not be found.
Action:
Consider defining a bean of type 'org.springframework.web.reactive.DispatcherHandler' in your configuration.