1.搭建单机版服务注册中心

1.1 增加Spring Cloud版本依赖

首先创建基于Spring Boot 2.1.3.Release项目，然后增加Spring Cloud依赖

 <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>

1.2 增加Eureka版本依赖

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

1.3 增加配置依赖

server:
  port: 8761
eureka:
  client:
    register-with-eureka: false  #不能自己注册自己
    fetch-registry: false  #是否同步eureka信息，单节点为false，集群则为true
  instance:
    hostname: demo-springcloud-eureka-one
    prefer-ip-address: true
spring:
  application:
    name: demo-springcloud-eureka-one

1.4 增加代码层次注解

@EnableEurekaServer //开启服务注册能力，标明我们是服务注册中心
@SpringBootApplication
public class DemoSpringcloudEurekaApplication {

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

1.5 访问预览

http://localhost:127.0.0.1：8761

image.png

2. 搭建安全认证的服务注册中心

2.1 基于上述例子，增加安全认证依赖

<!--不能让eureka裸奔，加上认证-->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-security</artifactId>
    </dependency>
    <!--不能让eureka裸奔，加上认证-->

2.2 增加配置依赖

spring:
  application:
    name: demo-springcloud-eureka-one
  security:
      user:
        password: user
        name: user

2.3 增加代码依赖

@EnableWebSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {


    // 因为新增的security覆盖了csf，所以需要重写一下，才能直接使用
    protected void configure(HttpSecurity httpSecurity)throws Exception{

        httpSecurity.csrf().disable().authorizeRequests().anyRequest().authenticated().and().httpBasic();
    }
}

2.4 访问预览

image.png

3.搭建高可用集群服务注册中心

3.1搭建两套eureka项目

搭建两个项目分别为：
demo-springcloud-eureka-one
demo-springcloud-eureka-two

3.2 两个项目的配置项

demo-springcloud-eureka-one 配置改动：

server:
  port: 8761
eureka:
  client:
    service-url:
      defaultZone: http://user:user@demo-springcloud-eureka-two:8762/eureka/
    register-with-eureka: false  #不能自己注册自己
    fetch-registry: true  #是否同步eureka信息，单节点为false，集群则为true
  instance:
    hostname: demo-springcloud-eureka-one
    prefer-ip-address: true
spring:
  application:
    name: demo-springcloud-eureka-one
  security:
      user:
        password: user
        name: user

demo-springcloud-eureka-two 配置改动：

server:
  port: 8762
eureka:
  client:
    service-url:
      defaultZone: http://user:user@demo-springcloud-eureka-one:8761/eureka/
    register-with-eureka: false  #不能自己注册自己
    fetch-registry: true  #是否同步eureka信息，单节点为false，集群则为true
  instance:
    hostname: demo-springcloud-eureka-two
    prefer-ip-address: true
spring:
  application:
    name: demo-springcloud-eureka-two
  security:
      user:
        password: user
        name: user

如果是多个注册中心，请在defaultZone这里以逗号隔开即可。

3.3 配置hosts

image.png

127.0.0.1 demo-springcloud-eureka-one
127.0.0.1 demo-springcloud-eureka-two

3.4 访问预览

访问demo-springcloud-eureka-one可以看见 two已经注册进入

image.png

访问demo-springcloud-eureka-two可以看见 one已经注册进入

image.png

4. Eureka对应相关的配置

相关直接查看文档即可。

5. 使用服务注册到Eureka管理

5.1 搭建一个用户Server，增加Eureka客户端依赖

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

5.2 增加配置文件

spring:
  application:
    name: demo-springcloud-service-user
eureka:
  client:
    service-url:
      defaultZone: http://user:user@demo-springcloud-eureka-one:8761/eureka/
  instance:
    prefer-ip-address: true
server:
  port: 8899

5.3 代码层增加配置

//发现服务注册中心，将服务进行注册
@EnableDiscoveryClient
@SpringBootApplication
public class DemoSpringcloudServiceUserApplication {

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

5.4 效果预览

访问： http://127.0.0.1:/8761

image.png