微服务（尤里卡客户端）未注册尤里卡服务器/尤里卡服务器未发现尤里卡客户端

Question

尤里卡服务器设置

pom.xml

<properties>
    <java.version>1.8</java.version>
    <spring-cloud.version>Hoxton.SR1</spring-cloud.version>
</properties>

<dependencies>
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
    </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>
</dependencyManagement>

主要应用类

@SpringBootApplication
@EnableEurekaServer
public class DiscoveryServerApplication {

    public static void main(String[] args) {
        SpringApplication.run(DiscoveryServerApplication.class, args);
    }
}

应用程序属性

server.port=8761
eureka.client.register-with-eureka=false
eureka.client.fetch-registry=false

尤里卡客户端设置

pom.xml

<properties>
    <java.version>1.8</java.version>
    <spring-cloud.version>Hoxton.SR1</spring-cloud.version>
</properties>
<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.2.3.RELEASE</version>
    <relativePath/> <!-- lookup parent from repository -->
</parent>
<dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-netflix-eureka-client</artifactId>
</dependency>
<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>
</dependencyManagement>

主要应用类

@SpringBootApplication
@EnableEurekaClient
public class CurrencyExchangeServiceApplication {

    public static void main(String[] args) {
        SpringApplication.run(CurrencyExchangeServiceApplication.class, args);
    }
}

应用程序属性

server.port=8100
spring.application.name=currency-exchange-service

eureka.client.register-with-eureka=true
eureka.client.fetch-registry=true
eureka.client.serviceUrl.defaultZone=http://localhost:8761

我在eureka-server仪表板（http://localhost:8761）中没有看到在Eureka服务器上注册的微服务-currency-exchange-service

1. 为什么尤里卡客户端没有注册到尤里卡服务器？
2. @EnableDiscoveryClient 和 @EnableEurekaClient 一样吗？

Answer 1

我已经使用您的配置创建并测试了。discovery(eureka) 客户端应用程序中不需要以下两行。

eureka.client.register-with-eureka=true
eureka.client.fetch-registry=true

请使用以下依赖项

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>

代替

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-netflix-eureka-client</artifactId>
</dependency>

实际上register-with-eureka : false正在停止向发现（尤里卡）服务器注册，因此将其从客户端应用程序中完全删除。

如果发现（eureka）服务器端口不是 8761，请添加以下行。例如，

eureka.client.serviceUrl.defaultZone=http://localhost:9000