每日总结SpringCloud(eureka,Ribbon负载均衡)

Eureka:

导入依赖:

 //服务端
 <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
    </dependency>
//客户端
 <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-netflix-eureka-clent</artifactId>
    </dependency>

添加application.yml文件

#服务端
server:
	port: 8888 #端口号
spring:
  application:
    name: name #服务名称

eureka:
	instance:
    	hostname: localhost 
    client:
    fetch-registry: false  #是否提取服务
    register-with-eureka: false #是否向注册中心注册
    service-url:
      defaultZone: http://localhost:7001/eureka #监视地址

#客户端
server:
	port: 8888 #端口号
spring:
  application:
    name: name #服务名称

eureka:
    client:
    fetch-registry: true #是否提取服务
    register-with-eureka: true #是否向注册中心注册
    service-url:
      defaultZone: http://localhost:7001/eureka #注册地址

最后在启动类上开启服务
@EnableEurekaServer 服务端
@EnableEurekaClent 客户端

Ribbon负载均衡

1.com.netflix.loadbalancer.RoundRobinRule 轮询，默认策略。
2.com.netflix.loadbalancer.RandomRule 随机

需要在启动类之外的包中写入配置类

@Configuration
public class RuleConfig {

    @Bean
    public IRule getRule()
    {
        return new RandomRule(); //策略
    }
}

再从启动类中开启负载均衡策略

@SpringBootApplication
@EnableEurekaClient
//name:需要负载均衡的服务名,configuration:自定义策略的字节码文件
@RibbonClient(name = "CLOUD-PAYMENT-SERVICE",configuration = RuleConfig.class)
public class FeignOrderMain80 {
    public static void main(String[] args) {
        SpringApplication.run(FeignOrderMain80.class,args);
    }
}