SpringCloud-eureka配置问题

悠悠 2023-10-02 09:57 17阅读 0赞

#### SpringCloud-eureka配置问题 ####

*  问题一
 *  问题二

## 问题一 ##

配置如下：

<?xml version="1.0" encoding="UTF-8"?>
    <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
        <modelVersion>4.0.0</modelVersion>
        <parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>2.5.4</version>
            <relativePath/> 
        </parent>
        
        <properties>
            <java.version>1.8</java.version>
        </properties>
        <dependencies>
            <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>
            
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
                <version>2.5.</version>
            </dependency>
    
        </dependencies>
        <dependencyManagement>
            <dependencies>
                
                <dependency>
                    <groupId>org.springframework.cloud</groupId>
                    <artifactId>spring-cloud-dependencies</artifactId>
                    <version>Hoxton.SR7</version>
                    <type>pom</type>
                    <scope>runtime</scope>
                </dependency>
            </dependencies>
        </dependencyManagement>
        <build>
            <plugins>
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                </plugin>
            </plugins>
        </build>
    </project>

问题如下：

2021-09-19 22:09:03.808 INFO 3932 — \[ main\] c.n.d.s.t.d.RedirectingEurekaHttpClient : Request execution error. endpoint=DefaultEndpoint\{ serviceUrl='http://localhost:8081/eureka/\}, exception=java.net.ConnectException: Connection refused: connect stacktrace=com.sun.jersey.api.client.ClientHandlerException: java.net.ConnectException: Connection refused: connect  
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 ( W e b R e s o u r c e . j a v a : 74 ) a t c o m . s u n . j e r s e y . a p i . c l i e n t . W e b R e s o u r c e 200(WebResource.java:74) at com.sun.jersey.api.client.WebResource 200(WebResource.java:74)atcom.sun.jersey.api.client.WebResourceBuilder.delete(WebResource.java:591)  
at com.netflix.discovery.shared.transport.jersey.AbstractJerseyEurekaHttpClient.cancel(AbstractJerseyEurekaHttpClient.java:77)  
at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$2.execute(EurekaHttpClientDecorator.java:74)  
at com.netflix.discovery.shared.transport.decorator.MetricsCollectingEurekaHttpClient.execute(MetricsCollectingEurekaHttpClient.java:73)  
at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.cancel(EurekaHttpClientDecorator.java:71)  
at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$2.execute(EurekaHttpClientDecorator.java:74)  
at com.netflix.discovery.shared.transport.decorator.RedirectingEurekaHttpClient.executeOnNewServer(RedirectingEurekaHttpClient.java:121)  
at com.netflix.discovery.shared.transport.decorator.RedirectingEurekaHttpClient.execute(RedirectingEurekaHttpClient.java:80)  
at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.cancel(EurekaHttpClientDecorator.java:71)  
at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$2.execute(EurekaHttpClientDecorator.java:74)  
at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:120)  
at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.cancel(EurekaHttpClientDecorator.java:71)  
at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator 2. e x e c u t e ( E u r e k a H t t p C l i e n t D e c o r a t o r . j a v a : 74 ) a t c o m . n e t f l i x . d i s c o v e r y . s h a r e d . t r a n s p o r t . d e c o r a t o r . S e s s i o n e d E u r e k a H t t p C l i e n t . e x e c u t e ( S e s s i o n e d E u r e k a H t t p C l i e n t . j a v a : 77 ) a t c o m . n e t f l i x . d i s c o v e r y . s h a r e d . t r a n s p o r t . d e c o r a t o r . E u r e k a H t t p C l i e n t D e c o r a t o r . c a n c e l ( E u r e k a H t t p C l i e n t D e c o r a t o r . j a v a : 71 ) a t c o m . n e t f l i x . d i s c o v e r y . D i s c o v e r y C l i e n t . u n r e g i s t e r ( D i s c o v e r y C l i e n t . j a v a : 972 ) a t c o m . n e t f l i x . d i s c o v e r y . D i s c o v e r y C l i e n t . s h u t d o w n ( D i s c o v e r y C l i e n t . j a v a : 948 ) a t s u n . r e f l e c t . N a t i v e M e t h o d A c c e s s o r I m p l . i n v o k e 0 ( N a t i v e M e t h o d ) a t s u n . r e f l e c t . N a t i v e M e t h o d A c c e s s o r I m p l . i n v o k e ( N a t i v e M e t h o d A c c e s s o r I m p l . j a v a : 62 ) a t s u n . r e f l e c t . D e l e g a t i n g M e t h o d A c c e s s o r I m p l . i n v o k e ( D e l e g a t i n g M e t h o d A c c e s s o r I m p l . j a v a : 43 ) a t j a v a . l a n g . r e f l e c t . M e t h o d . i n v o k e ( M e t h o d . j a v a : 498 ) a t o r g . s p r i n g f r a m e w o r k . b e a n s . f a c t o r y . a n n o t a t i o n . I n i t D e s t r o y A n n o t a t i o n B e a n P o s t P r o c e s s o r 2.execute(EurekaHttpClientDecorator.java:74) at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.cancel(EurekaHttpClientDecorator.java:71) at com.netflix.discovery.DiscoveryClient.unregister(DiscoveryClient.java:972) at com.netflix.discovery.DiscoveryClient.shutdown(DiscoveryClient.java:948) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor 2.execute(EurekaHttpClientDecorator.java:74)atcom.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77)atcom.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.cancel(EurekaHttpClientDecorator.java:71)atcom.netflix.discovery.DiscoveryClient.unregister(DiscoveryClient.java:972)atcom.netflix.discovery.DiscoveryClient.shutdown(DiscoveryClient.java:948)atsun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethod)atsun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)atsun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)atjava.lang.reflect.Method.invoke(Method.java:498)atorg.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessorLifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:389)  
at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeDestroyMethods(InitDestroyAnnotationBeanPostProcessor.java:347)  
at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeDestruction(InitDestroyAnnotationBeanPostProcessor.java:177)  
at org.springframework.beans.factory.support.DisposableBeanAdapter.destroy(DisposableBeanAdapter.java:184)  
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroyBean(DefaultSingletonBeanRegistry.java:587)  
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroySingleton(DefaultSingletonBeanRegistry.java:559)  
at org.springframework.beans.factory.support.DefaultListableBeanFactory.destroySingleton(DefaultListableBeanFactory.java:1152)  
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroySingletons(DefaultSingletonBeanRegistry.java:520)  
at org.springframework.beans.factory.support.DefaultListableBeanFactory.destroySingletons(DefaultListableBeanFactory.java:1145)  
at org.springframework.context.support.AbstractApplicationContext.destroyBeans(AbstractApplicationContext.java:1106)  
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:596)  
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145)  
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:754)  
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:434)  
at org.springframework.boot.SpringApplication.run(SpringApplication.java:338)  
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1343)  
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1332)  
at com.jg.study.springeureka03.SpringEureka03Application.main(SpringEureka03Application.java:12)  
Caused by: java.net.ConnectException: Connection refused: connect  
at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)  
at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:81)  
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)  
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)  
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)  
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)  
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)  
at java.net.Socket.connect(Socket.java:606)  
at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:121)  
at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:180)  
at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:144)  
at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:134)  
at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:605)  
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:440)  
at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:835)  
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:118)  
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56)  
at com.sun.jersey.client.apache4.ApacheHttpClient4Handler.handle(ApacheHttpClient4Handler.java:173)  
… 44 more

spring.application.name=config-service  
server.port=8081

eureka.instance.hostname=localhost

eureka.client.refresh.enable=false

eureka.client.fetch-registry=false

eureka.client.service-url.defaultZone = http:// e u r e k a . i n s t a n c e . h o s t n a m e : \{eureka.instance.hostname\}: eureka.instance.hostname:\{server.port\}/eureka/

解决方案：  
版本问题，在创建项目时选择eureka依赖导入

## 问题二 ##

正确配置

<?xml version="1.0" encoding="UTF-8"?>
    <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
        <modelVersion>4.0.0</modelVersion>
        <parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>2.5.4</version>
            <relativePath/> 
        </parent>
       
        
        <properties>
            <java.version>1.8</java.version>
        </properties>
        <dependencies>
            <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>
            
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
                <version>2.5.</version>
            </dependency>
    
        </dependencies>
        <dependencyManagement>
            <dependencies>
                
                <dependency>
                    <groupId>org.springframework.cloud</groupId>
                    <artifactId>spring-cloud-dependencies</artifactId>
                    <version>Hoxton.SR7</version>
                    <type>pom</type>
                    <scope>runtime</scope>
                </dependency>
            </dependencies>
        </dependencyManagement>
        <build>
            <plugins>
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                </plugin>
            </plugins>
        </build>
    
    </project>

通过访问loaclhost:8081/eureka/ 找不到404，  
直接访问loaclhost:8081