将微服务注册到Eureka Server

一、微服务程序编写

1、在已写好的微服务程序中添加pom依赖：

<dependency>

    <groupId>org.springframework.cloud</groupId>

    <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>

</dependency>

　　例子程序的完整pom文件如下，只是一个简单的mvc程序，添加了SpringBoot的Actuactor:

<?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.example</groupId>

    <artifactId>microservice-consumer-movie</artifactId>

    <version>0.0.1-SNAPSHOT</version>

    <packaging>jar</packaging>

    <name>ServiceConsumer</name>

    <description>Demo project for Spring Boot</description>

    <parent>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-starter-parent</artifactId>

        <version>2.1.0.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>

    </properties>

    <dependencies>

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-web</artifactId>

        </dependency>

        <dependency>

            <groupId>org.projectlombok</groupId>

            <artifactId>lombok</artifactId>

            <optional>true</optional>

        </dependency>

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-test</artifactId>

            <scope>test</scope>

        </dependency>

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-actuator</artifactId>

        </dependency>

        <dependency>

            <groupId>org.springframework.cloud</groupId>

            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>

        </dependency>

    </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>

        <plugins>

            <plugin>

                <groupId>org.springframework.boot</groupId>

                <artifactId>spring-boot-maven-plugin</artifactId>

            </plugin>

        </plugins>

    </build>

</project>

2、在Spring Cloud Edgware版本以前，要将微服务注册到Eureka Server或者其它微服务发现组件上，必须在启动类上添加@EnableEurekaClient或者@EnableDiscoveryClient，之后的版本不需要了。

3、配置application.yml或application.properties：

server:

  port: 8000

spring:

  main:

    allow-bean-definition-overriding: true

  jpa:

    generate-ddl: false

    show-sql: true

    hibernate:

      ddl-auto: none

  datasource:

    platform: h2

    schema: classpath:db/schema.sql

    data: classpath:db/data.sql

  logging:

    level:

      root: INFO

      org.hibernate: INFO

      org.hibernate.type.descriptor.sql.BasicBinder: TRACE

      org.hibernate.type.descriptor.sql.BasicExtractor: TRACE

  application:

    name: microservice-provider-user

eureka:

  client:

    service-url:

      defaultZone: http://peer1:8761/eureka/,http://peer2:8762/eureka/  #设置与Eureka Server的交互地址，如果是Eureka Server集群，可以通过逗号分隔配置多个地址

  instance:

    prefer-ip-address: true

　　例子程序的github地址是https://github.com/zjianliu/ServiceProvider

二、将微服务注册到Eureka Server

　　运行微服务，访问http://localhost:8761，可以发现，微服务已经被注册了

巴特西

将微服务注册到Eureka Server

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