Eureka搭建

最新推荐文章于 2023-02-28 12:20:00 发布

原创最新推荐文章于 2023-02-28 12:20:00 发布 · 398 阅读

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文章标签：

#eureka #maven #spring boot #java

本文详细介绍如何使用Spring Boot和Spring Cloud Finchley版本搭建Eureka服务注册中心，并通过实例演示如何配置Eureka Server和Eureka Client，实现服务的注册与发现。

Eureka搭建

Eureka父框架搭建

springboot版本

<version>2.0.3.RELEASE</version>

springcloud版本

<version>Finchley.RELEASE</version>

pom添加依赖

    <?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>
    <groupId>com.study</groupId>
    <artifactId>test-eureka</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>pom</packaging>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.3.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
        <spring-cloud.version>Finchley.RELEASE</spring-cloud.version>
    </properties>
    <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>
</project>

EurekaServer搭建

在test-eureke下创建一个名为eurekaServer的 module ,使用spring Initializr优先
application.properties配置

server.port=8761
eureka.instance.hostname=localhost
eureka.client.register-with-eureka=false
eureka.client.fetch-registry=false
eureka.client.service-url.defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/

pom添加依赖

<?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>
    <!--添加父依赖-->
    <parent>
        <groupId>com.study</groupId>
        <artifactId>test-eureke</artifactId>
        <version>1.0-SNAPSHOT</version>
        <relativePath/>
    </parent>
    <artifactId>eureka-server</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>eureka-server</name>
    <properties>
        <java.version>1.8</java.version>
    </properties>
    <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-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter</artifactId>
            <version>RELEASE</version>
            <scope>test</scope>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

main启动类中添加@EnableEurekaServer注解

import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;
@EnableEurekaServer
@SpringBootApplication
public class EurekaServerApplication {
	public static void main(String[] args) {
		SpringApplication.run(EurekaServerApplication.class, args);
	}
}

**启动mian类 **
进入管理页 http://localhost:8761/
在这里插入图片描述
在这里你会发现没有可以用实例，接着我们继续注册个就是了

EurekaClient搭建

继续创建一个module 和eurekaServer 同级的eurekaClient，使用spring Initializr创建

pom添加依赖

    <parent>
        <groupId>com.study</groupId>
        <artifactId>test-eureka</artifactId>
        <version>1.0-SNAPSHOT</version>
        <relativePath/>
    </parent>
    <artifactId>eureka-client</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>eureka-client</name>
    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.testng</groupId>
            <artifactId>testng</artifactId>
            <version>7.0.0</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter-api</artifactId>
            <version>5.5.2</version>
            <scope>test</scope>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

application.properties配置

eureka.client.service-url.defaultZone: http://localhost:8761/eureka/
server.port=8762
spring.application.name=eureka-client

启动类添加@EnableEurekaClient注解

import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
@EnableEurekaClient
@SpringBootApplication
public class EurekaClientApplication {
	public static void main(String[] args) {
		SpringApplication.run(EurekaClientApplication.class, args);
	}
}

最后启动EurekaClientApplication

重进或刷新管理页面发现有个实例
在这里插入图片描述

特别提醒如果eurekaClient中的pom文件没有添加web依赖会注册不了

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
 </dependency>

最重要的是springboot和springcloud的版本问题

spring官网
https://spring.io/projects/spring-cloud
spring官网推荐兼容版本
在这里插入图片描述