学习springcloud的时候遇上了这个问题
部分报错信息：
2023-03-13 23:45:28.834 INFO 8920 --- [ main] com.netflix.discovery.DiscoveryClient : Getting all instance registry info from the eureka server
2023-03-13 23:45:28.851 INFO 8920 --- [ main] c.n.d.s.t.d.RedirectingEurekaHttpClient : Request execution error. endpoint=DefaultEndpoint{ serviceUrl='http:/localhost:10086/eureka/}, exception=java.lang.IllegalArgumentException: Host name may not be null stacktrace=com.sun.jersey.api.client.ClientHandlerException: java.lang.IllegalArgumentException: Host name may not be null
at com.sun.jersey.client.apache4.ApacheHttpClient4Handler.handle(ApacheHttpClient4Handler.java:187)
at com.sun.jersey.api.client.filter.GZIPContentEncodingFilter.handle(GZIPContentEncodingFilter.java:123)
at com.netflix.discovery.EurekaIdentityHeaderFilter.handle(EurekaIdentityHeaderFilter.java:27)
at com.sun.jersey.api.client.Client.handle(Client.java:652)
at com.sun.jersey.api.client.WebResource.handle(WebResource.java:682)
at com.sun.jersey.api.client.WebResource.access$200(WebResource.java:74)
at com.sun.jersey.api.client.WebResource$Builder.get(WebResource.java:509)
at com.netflix.discovery.shared.transport.jersey.AbstractJerseyEurekaHttpClient.getApplicationsInternal(AbstractJerseyEurekaHttpClient.java:196)
at co134)
at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$6.execute(EurekaHttpClientDecorator.java:137)
at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:120)
at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.getApplications(EurekaHttpClientDecorator.java:134)
at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$6.execute(EurekaHttpClientDecorator.java:137)
at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77)
at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.getApplications(EurekaHttpClientDecorator.java:134)
at com.netflix.discovery.DiscoveryClient.getAndStoreFullRegistry(DiscoveryClient.java:1101)
at com.netflix.discovery.DiscoveryClient.fetchRegistry(DiscoveryClient.java:1014)
at com.netflix.discovery.DiscoveryClient.<init>(DiscoveryClient.java:441)
at com.netflix.discovery.DiscoveryClient.<init>(DiscoveryClient.java:283)
at com.netflix.discovery.DiscoveryClient.<init>(DiscoveryClient.java:279)
at org.springframework.cloud.netflix.eureka.CloudEurekaClient.<init>(CloudEurekaClient.java:66)
at org.springframework.cloud.netflix.eureka.EurekaClientAutoConfiguration$RefreshableEurekaClientConfiguration.eurekaClient(EurekaClientAutoConfiguration.java:295)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:657)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:119)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399)
a
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:955)
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:731)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:307)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1303)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1292)
at com.example.demo.Demo1Application.main(Demo1Application.java:12)
Caused by: java.lang.IllegalArgumentException: Host name may not be null
at org.apache.http.util.Args.containsNoBlanks(Args.java:81)
at org.apache.http.HttpHost.<init>(HttpHost.java:80)
at com.sun.jersey.client.apache4.ApacheHttpClient4Handler.getHost(ApacheHttpClient4Handler.java:198)
at com.sun.jersey.client.apache4.ApacheHttpClient4Handler.handle(ApacheHttpClient4Handler.java:173)
... 101 more
2023-03-13 23:45:28.851 WARN 8920 --- [ main] c.n.d.s.t.d.RetryableEurekaHttpClient : Request execution failed with message: java.lang.IllegalArgumentException: Host name may not be null
2023-03-13 23:45:28.854 INFO 8920 --- [ main] com.netflix.discovery.DiscoveryClient : DiscoveryClient_EUREKASERVER/DESKTOP-2QP90ST:eurekaserver:10086 - was unable to refresh its cache! This periodic background refresh will be retried in 30 seconds. status = Cannot execute request on any known server stacktrace = com.netflix.discovery.shared.transport.TransportException: Cannot execute request on any known server
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:147)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:731)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:307)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1303)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1292)
at com.example.demo.Demo1Application.main(Demo1Application.java:12)
2023-03-13 23:45:28.854 INFO 8920 --- [ main] com.netflix.discovery.DiscoveryClient : Initial registry fetch from primary servers failed
2023-03-13 23:45:28.854 WARN 8920 --- [ main] com.netflix.discovery.DiscoveryClient : Using default backup registry implementation which does not do anything.
2023-03-13 23:45:28.854 INFO 8920 --- [ main] com.netflix.discovery.DiscoveryClient : Initial registry fetch from backup servers failed
2023-03-13 23:45:28.856 INFO 8920 --- [ main] com.netflix.discovery.DiscoveryClient : Not registering with Eureka server per configuration
2023-03-13 23:45:28.860 INFO 8920 --- [ main] com.netflix.discovery.DiscoveryClient : Discovery Client initialized at timestamp 1678722328859 with initial instances count: 0
2023-03-13 23:45:28.892 INFO 8920 --- [ main] c.n.eureka.DefaultEurekaServerContext : Initializing ...
2023-03-13 23:45:28.893 INFO 8920 --- [ main] c.n.eureka.cluster.PeerEurekaNodes : Adding new peer nodes [http:/localhost:10086/eureka/]
2023-03-13 23:45:28.895 INFO 8920 --- [ main] c.n.d.provider.DiscoveryJerseyProvider : Using JSON encoding codec LegacyJacksonJson
2023-03-13 23:45:28.895 INFO 8920 --- [ main] c.n.d.provider.DiscoveryJerseyProvider : Using JSON decoding codec LegacyJacksonJson
2023-03-13 23:45:28.895 INFO 8920 --- [ main] c.n.d.provider.DiscoveryJerseyProvider : Using XML encoding codec XStreamXml
2023-03-13 23:45:28.895 INFO 8920 --- [ main] c.n.d.provider.DiscoveryJerseyProvider : Using XML decoding codec XStreamXml
2023-03-13 23:45:28.959 INFO 8920 --- [ main] c.n.eureka.cluster.PeerEurekaNodes : Replica node URL: http:/localhost:10086/eureka/
2023-03-13 23:45:28.966 INFO 8920 --- [ main] c.n.e.registry.AbstractInstanceRegistry : Finished initializing remote region registries. All known remote regions: []
2023-03-13 23:45:28.967 INFO 8920 --- [
一长串的报错，后面查了很多内容还是无法解决。
我的代码是：
pom.xml
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
启动类：
@SpringBootApplication
@EnableEurekaServer
public class Demo1Application {
public static void main(String[] args) {
SpringApplication.run(Demo1Application.class, args);
}
}
配置文件
server:
port: 10086
spring:
application:
name: eurekaserver #服务名称
eureka:
instance:
hostname: localhost
client:
register-with-eureka: false
service-url:
defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka
