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Spring cloud Eureka

Eureka Server,注册中心

Eureka Client,所有要进行注册的微服务通过Eureka Client 连接到 Eureka Server ,完后注册

一.创建父工程，pom.xml

<modelVersion>4.0.0</modelVersion>

<groupId>com.southwind</groupId>
<artifactId>aispringcloud</artifactId>
<packaging>pom</packaging>
<version>1.0-SNAPSHOT</version>
<modules>
    <module>eurekaserver</module>
    <module>eurekaclient</module>
</modules>

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.1.3.RELEASE</version>
</parent>
<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <!--解决 jdk 9 以上没有 jaxb api 的问题-->
    <!--<dependency>-->
        <!--<groupId>javax.xml.bind</groupId>-->
        <!--<artifactId>jaxb-api</artifactId>-->
        <!--<version>2.3.0</version>-->
    <!--</dependency>-->
    <!--<dependency>-->
        <!--<groupId>com.sun.xml.bind</groupId>-->
        <!--<artifactId>jaxb-impl</artifactId>-->
        <!--<version>2.3.0</version>-->
    <!--</dependency>-->
    <!--<dependency>-->
        <!--<groupId>com.sun.xml.bind</groupId>-->
        <!--<artifactId>jaxb-core</artifactId>-->
        <!--<version>2.3.0</version>-->
    <!--</dependency>-->
    <!--<dependency>-->
        <!--<groupId>javax.activation</groupId>-->
        <!--<artifactId>activation</artifactId>-->
        <!--<version>1.1.1</version>-->
    <!--</dependency>-->

<dependency>
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
    <version>1.18.6</version>
    <scope>provided</scope>
</dependency>


</dependencies>

<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-dependencies</artifactId>
            <version>Finchley.SR2</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>
2.然后在父类里面创建两个子工程

在第一个子项目中创建配置文件 application.yml 添加EUREKA Server相关配置

#端口号
server:
  port: 7070
#是否在注册中心把自己当成一个微服务注册
eureka:
  client:
    register-with-eureka: false
    fetch-registry: false
    service-url:
     defaultZone: http://localhost:9090/eureka/
属性说明：
server.por:当前Eureka Server 服务端口
eureka.client.register-with-eureka:是否将当前的Eureka Server 服务作为客户端进行注册

eureka.client.fetch-fegistry:是否获取其他Eureka Server 服务的数据
eureka.client.service-url.defaultzone:注册中心访问地址

性对应的pom.xml的配置：

<parent>
    <artifactId>aispringcloud</artifactId>
    <groupId>com.southwind</groupId>
    <version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>

<artifactId>eurekaserver</artifactId>
<!--注册中心-->
<dependencies>
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
        <version>2.0.2.RELEASE</version>
    </dependency>
</dependencies>
.创建启动类

@SpringBootApplication     //声明该类是springboot的入口
@EnableEurekaServer   //声明该类少一个Eureka Server微服务，提供注册和发现功能（注册中心
public class EurekaServerApplication {
    public static void main(String[] args){
        SpringApplication.run(EurekaServerApplication.class,args);
    }
}

####### Eureka Client代码的实现
1.创建 Module,pom.xml

第二个子项目中 pom.xml 的配置 yml 配置 启动类配置

<parent>
    <artifactId>aispringcloud</artifactId>
    <groupId>com.southwind</groupId>
    <version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>

<artifactId>eurekaclient</artifactId>

<dependencies>
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        <version>2.0.2.RELEASE</version>
    </dependency>
</dependencies>

yml的配置：

server:
  port: 9090
#  当前服务器注册在Eureka Server上面的名字
spring:
  application:
    name: provider
#    注册中心访问的地址
eureka:
  client:
    service-url:
      defaultZone: http://localhost:9090/eureka/
#      是否将当前服务的ip注册到 Eureka Server
instance:
  prefer-ip-address: true

实体类：

package com.ssouthwind;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

/**
 * Created by 86182 on 2019/7/29.
 */
@SpringBootApplication
public aspect ProviderAppliaction {
    public static void main(String[] args){
        SpringApplication.run(ProviderAppliaction.class,args);
    }
}

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