spring cloud 入门实践系列 - eureka

向右看齐 2022-06-12 08:43 190阅读 0赞

> eureka 分为三种角色：eureka server，service provider，service consumer

# eureka server 服务端 #

## 先创建maven工程 ##

![这里写图片描述][SouthEast]

## pom配置 ##

<parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>1.5.4.RELEASE</version>
            <relativePath/> 
        </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>Dalston.SR1</spring-cloud.version>
        </properties>
    
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-eureka-server</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>
        </dependencyManagement>
    
        <build>
            <plugins>
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                </plugin>
            </plugins>
        </build>

## 服务端代码 ##

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

## 运行服务端代码 ##

![这里写图片描述][SouthEast 1]

# service provider 服务端 #

## 先创建maven工程 ##

![这里写图片描述][SouthEast 2]

## pom配置 ##

<parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>1.5.4.RELEASE</version>
            <relativePath/> 
        </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>Dalston.SR1</spring-cloud.version>
        </properties>
    
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-eureka</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>
        </dependencyManagement>
    
        <build>
            <plugins>
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                </plugin>
            </plugins>
        </build>

## service provider代码 ##

package com.zhang;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
    
    @EnableEurekaClient
    @SpringBootApplication
    public class EurekaproviderApplication {
    
        public static void main(String[] args) {
            SpringApplication.run(EurekaproviderApplication.class, args);
        }
    }

## application.yml ##

eureka:
      client:
        serviceUrl:
          defaultZone: http://localhost:8761/eureka/
    server:
      port: 8762
    spring:
      application:
        name: hello-service

代码下载：[https://github.com/BruceZhangXL/eureka-test/][https_github.com_BruceZhangXL_eureka-test]

[SouthEast]: /images/20220612/fed99a35372a44ee8de0c8e1455c9d52.png
[SouthEast 1]: /images/20220612/0c8691ab164c4e52bf06665ec1b2f6d7.png
[SouthEast 2]: /images/20220612/5d7ee696bd2c4475a4c4e401a27521a1.png
[https_github.com_BruceZhangXL_eureka-test]: https://github.com/BruceZhangXL/eureka-test/