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问由于连接被拒绝而无法启动尤里卡服务器，例外: com.sun.jersey.api.client.ClientHandlerException
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Stack Overflow用户

提问于 2022-10-17 05:43:25

回答 1查看 143关注 0票数 0

我正在尝试通过Spring和Kotlin启动一个简单的Eureka服务器，但是我一直在接收Request execution error. endpoint=DefaultEndpoint{ serviceUrl='http://localhost:8761/eureka/}, exception=java.net.ConnectException: Connection refused stacktrace=com.sun.jersey.api.client.ClientHandlerException: java.net.ConnectException: Connection refused，不管我用各种不同的方式改变了application.properties多少次，在这里的多个帖子的帮助下。我怎么才能解决这个问题？

我的pom.xml：

<?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 http://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>2.7.3</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>2021.0.4</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <artifactId>discovery-server</artifactId>
    <groupId>org.shopping</groupId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>pom</packaging>

    <name>discovery-server</name>

    <properties>
        <java.version>11</java.version>
        <kotlin.version>1.6.21</kotlin.version>
        <spring-cloud.version>2021.0.4</spring-cloud.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.jetbrains.kotlin</groupId>
            <artifactId>kotlin-reflect</artifactId>
        </dependency>
        <dependency>
            <groupId>org.jetbrains.kotlin</groupId>
            <artifactId>kotlin-stdlib-jdk8</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-config</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-bootstrap</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <sourceDirectory>${project.basedir}/src/main/kotlin</sourceDirectory>
        <testSourceDirectory>${project.basedir}/src/test/kotlin</testSourceDirectory>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
            <plugin>
                <groupId>org.jetbrains.kotlin</groupId>
                <artifactId>kotlin-maven-plugin</artifactId>
                <configuration>
                    <args>
                        <arg>-Xjsr305=strict</arg>
                    </args>
                    <compilerPlugins>
                        <plugin>spring</plugin>
                    </compilerPlugins>
                </configuration>
                <dependencies>
                    <dependency>
                        <groupId>org.jetbrains.kotlin</groupId>
                        <artifactId>kotlin-maven-allopen</artifactId>
                        <version>${kotlin.version}</version>
                    </dependency>
                </dependencies>
            </plugin>
        </plugins>
    </build>

</project>

我的DiscoveryServerApplication

package com.shopping.discoveryserver

import org.springframework.boot.autoconfigure.SpringBootApplication
import org.springframework.boot.runApplication
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer

@SpringBootApplication
@EnableEurekaServer
class DiscoveryServerApplication

fun main(args: Array<String>) {
    runApplication<DiscoveryServerApplication>(*args)
}

我的application.properties

server.port=8761
spring.application.name=eureka-server
eureka.instance.hostname=localhost
eureka.server.maxThreadsForPeerReplication=0
eureka.client.registerWithEureka=false
eureka.client.fetchRegistry=false

弹簧启动日志：

2022-10-17 00:17:38.665  INFO 81886 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Fetching config from server at : http://localhost:8888
2022-10-17 00:17:38.743  INFO 81886 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Connect Timeout Exception on Url - http://localhost:8888. Will be trying the next url if available
2022-10-17 00:17:38.743  WARN 81886 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Could not locate PropertySource: I/O error on GET request for "http://localhost:8888/application/default": Connection refused; nested exception is java.net.ConnectException: Connection refused
2022-10-17 00:17:38.745  INFO 81886 --- [           main] c.s.d.DiscoveryServerApplicationKt       : No active profile set, falling back to 1 default profile: "default"
2022-10-17 00:17:39.393  INFO 81886 --- [           main] o.s.cloud.context.scope.GenericScope     : BeanFactory id=c3bbf1c6-4eb5-3807-b805-19115a4714b1
2022-10-17 00:17:39.606  INFO 81886 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
2022-10-17 00:17:39.613  INFO 81886 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2022-10-17 00:17:39.614  INFO 81886 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.65]
2022-10-17 00:17:39.723  INFO 81886 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2022-10-17 00:17:39.723  INFO 81886 --- [           main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 963 ms
2022-10-17 00:17:40.044  INFO 81886 --- [           main] c.s.j.s.i.a.WebApplicationImpl           : Initiating Jersey application, version 'Jersey: 1.19.4 05/24/2017 03:20 PM'
2022-10-17 00:17:40.093  INFO 81886 --- [           main] c.n.d.provider.DiscoveryJerseyProvider   : Using JSON encoding codec LegacyJacksonJson
2022-10-17 00:17:40.093  INFO 81886 --- [           main] c.n.d.provider.DiscoveryJerseyProvider   : Using JSON decoding codec LegacyJacksonJson
2022-10-17 00:17:40.192  INFO 81886 --- [           main] c.n.d.provider.DiscoveryJerseyProvider   : Using XML encoding codec XStreamXml
2022-10-17 00:17:40.192  INFO 81886 --- [           main] c.n.d.provider.DiscoveryJerseyProvider   : Using XML decoding codec XStreamXml
2022-10-17 00:17:40.882  INFO 81886 --- [           main] DiscoveryClientOptionalArgsConfiguration : Eureka HTTP Client uses Jersey
2022-10-17 00:17:40.927  WARN 81886 --- [           main] iguration$LoadBalancerCaffeineWarnLogger : Spring Cloud LoadBalancer is currently working with the default cache. While this cache implementation is useful for development and tests, it's recommended to use Caffeine cache in production.You can switch to using Caffeine cache, by adding it and org.springframework.cache.caffeine.CaffeineCacheManager to the classpath.
2022-10-17 00:17:40.939  INFO 81886 --- [           main] o.s.c.n.eureka.InstanceInfoFactory       : Setting initial instance status as: STARTING
2022-10-17 00:17:40.972  INFO 81886 --- [           main] com.netflix.discovery.DiscoveryClient    : Initializing Eureka in region us-east-1
2022-10-17 00:17:41.089  INFO 81886 --- [           main] c.n.d.provider.DiscoveryJerseyProvider   : Using JSON encoding codec LegacyJacksonJson
2022-10-17 00:17:41.089  INFO 81886 --- [           main] c.n.d.provider.DiscoveryJerseyProvider   : Using JSON decoding codec LegacyJacksonJson
2022-10-17 00:17:41.089  INFO 81886 --- [           main] c.n.d.provider.DiscoveryJerseyProvider   : Using XML encoding codec XStreamXml
2022-10-17 00:17:41.089  INFO 81886 --- [           main] c.n.d.provider.DiscoveryJerseyProvider   : Using XML decoding codec XStreamXml
2022-10-17 00:17:41.172  INFO 81886 --- [           main] c.n.d.s.r.aws.ConfigClusterResolver      : Resolving eureka endpoints via configuration
2022-10-17 00:17:41.183  INFO 81886 --- [           main] com.netflix.discovery.DiscoveryClient    : Disable delta property : false
2022-10-17 00:17:41.183  INFO 81886 --- [           main] com.netflix.discovery.DiscoveryClient    : Single vip registry refresh property : null
2022-10-17 00:17:41.184  INFO 81886 --- [           main] com.netflix.discovery.DiscoveryClient    : Force full registry fetch : false
2022-10-17 00:17:41.184  INFO 81886 --- [           main] com.netflix.discovery.DiscoveryClient    : Application is null : false
2022-10-17 00:17:41.184  INFO 81886 --- [           main] com.netflix.discovery.DiscoveryClient    : Registered Applications size is zero : true
2022-10-17 00:17:41.184  INFO 81886 --- [           main] com.netflix.discovery.DiscoveryClient    : Application version is -1: true
2022-10-17 00:17:41.184  INFO 81886 --- [           main] com.netflix.discovery.DiscoveryClient    : Getting all instance registry info from the eureka server
2022-10-17 00:17:41.228  INFO 81886 --- [           main] c.n.d.s.t.d.RedirectingEurekaHttpClient  : Request execution error. endpoint=DefaultEndpoint{ serviceUrl='http://localhost:8761/eureka/}, exception=java.net.ConnectException: Connection refused stacktrace=com.sun.jersey.api.client.ClientHandlerException: java.net.ConnectException: Connection refused
...
    at com.shopping.discoveryserver.DiscoveryServerApplicationKt.main(DiscoveryServerApplication.kt:15)
Caused by: java.net.ConnectException: Connection refused

spring

spring-boot

kotlin

netflix-eureka

回答 1

Stack Overflow用户

回答已采纳

发布于 2022-10-18 00:20:07

我想明白了，由于这里似乎是一个未回答的常见问题，我将在这里发布我的pom & properties文件(改编自Cannot connect to Eureka server. Exception: java.net.ConnectException: Connection refused: connect)：

我的pom.xml

<?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 http://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>2.1.4.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <artifactId>api-discovery</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>discovery-server</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>11</java.version>
        <kotlin.version>1.6.21</kotlin.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.jetbrains.kotlin</groupId>
            <artifactId>kotlin-reflect</artifactId>
        </dependency>
        <dependency>
            <groupId>org.jetbrains.kotlin</groupId>
            <artifactId>kotlin-stdlib-jdk8</artifactId>
        </dependency>
        <dependency>
            <!-- Setup Spring Boot -->
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>

        <dependency>
            <!-- Setup Spring MVC & REST, use Embedded Tomcat -->
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <!-- Spring Cloud starter -->
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka-server</artifactId>
            <version>1.4.6.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>javax.xml.bind</groupId>
            <artifactId>jaxb-api</artifactId>
            <version>2.2.11</version>
        </dependency>
        <dependency>
            <groupId>com.sun.xml.bind</groupId>
            <artifactId>jaxb-core</artifactId>
            <version>2.2.11</version>
        </dependency>
        <dependency>
            <groupId>com.sun.xml.bind</groupId>
            <artifactId>jaxb-impl</artifactId>
            <version>2.2.11</version>
        </dependency>
        <dependency>
            <groupId>javax.activation</groupId>
            <artifactId>activation</artifactId>
            <version>1.1.1</version>
        </dependency>
    </dependencies>

    <!-- Spring Cloud dependencies -->
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Finchley.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <sourceDirectory>${project.basedir}/src/main/kotlin</sourceDirectory>
        <testSourceDirectory>${project.basedir}/src/test/kotlin</testSourceDirectory>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
            <plugin>
                <groupId>org.jetbrains.kotlin</groupId>
                <artifactId>kotlin-maven-plugin</artifactId>
                <configuration>
                    <args>
                        <arg>-Xjsr305=strict</arg>
                    </args>
                    <compilerPlugins>
                        <plugin>spring</plugin>
                    </compilerPlugins>
                </configuration>
                <dependencies>
                    <dependency>
                        <groupId>org.jetbrains.kotlin</groupId>
                        <artifactId>kotlin-maven-allopen</artifactId>
                        <version>${kotlin.version}</version>
                    </dependency>
                </dependencies>
            </plugin>
        </plugins>
    </build>

</project>

我的application.properties

server.port=8761
spring.application.name=eureka-server
eureka.instance.hostname=localhost
eureka.server.maxThreadsForPeerReplication=0
eureka.client.registerWithEureka=false
eureka.client.fetchRegistry=false

最后，我没有使用spring-cloud-starter-netflix-eureka-server作为依赖项，而是选择了(不推荐的) spring-cloud-starter-eureka-server。从localhost:8761可以访问尤里卡。

票数 0

页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持

原文链接：

https://stackoverflow.com/questions/74092970

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