spring cloud学习

Eureka
可提供服务注册服务：

--高可用Eureka简单配置

--peer1 

server:
  port: 8762

spring:
  application:
    name: eureka-server
   
eureka:
  instance:

    hostname: peer1 #（配置本地主机地址127.0.0.1 peer1)

    prefer-ip-address: false
  client:
    serviceUrl:
      defaultZone: http://peer2:8761/eureka/

 

--peer2

server:
  port: 8761
spring:
  application:
    name: eureka-server

eureka:
  instance:
    hostname: peer2
  client:
    service-url:
      defaultZone: http://peer1:8762/eureka/

 

服务提供方：

server:
  port: 8000

spring:
  application:
    name: microservice-provider-user

logging:
  level:
    root:INFO

eureka:
  client:
    serviceUrl:
      defaultZone: http://peer1:8762/eureka/,http://peer2:8761/eureka/
  instance:
    preferIpAddress=false

在服务启动类加上 @EnableDiscoveryClient

 

--服务调用方使用ribbon做软件负载

server:
  port: 8010
spring:
  application:
    name: microservice-consumer-movie-ribbon
eureka:
  client:
    serviceUrl:
      defaultZone: http://peer1:8762/eureka/
  instance:
    preferIpAddress: true

同样需要在服务启动类加上注解@EnableDiscoveryClient

 --feign 做负载均衡

server:
  port: 8020
spring:
  application:
    name: microservice-consumer-movie-feign
eureka:
  client:
    serviceUrl:
      defaultZone: http://peer1:8762/eureka/
  instance:
    preferIpAddress: true
ribbon:
  eureka:
    enabled: true

--需要在服务启动类上加上@EnableDiscoveryClient
--@EnableFeignClients

个人理解：feign在ribbon的基础上封装了对服务提供者调用操作，ribbon需要自己构建http请求，feign则面向接口，对可发者更友好

 

Zuul

添加依赖

<dependency>
  <groupId>org.springframework.cloud</groupId>
  <artifactId>spring-cloud-starter-zuul</artifactId>
 </dependency>
 <dependency>
  <groupId>org.springframework.cloud</groupId>
  <artifactId>spring-cloud-starter-eureka</artifactId>
  <exclusions>
    <exclusion>
     <groupId>ch.qos.logback</groupId>
     <artifactId>logback-classic</artifactId>
    </exclusion>
    <exclusion>
     <groupId>ch.qos.logback</groupId>
     <artifactId>logback-core</artifactId>
    </exclusion>
   </exclusions>
 </dependency>
 <dependency>
   <groupId>ch.qos.logback</groupId>
   <artifactId>logback-core</artifactId>
   <version>1.1.3</version>
   </dependency>

  <dependency>
   <groupId>ch.qos.logback</groupId>
   <artifactId>logback-access</artifactId>
   <version>1.1.3</version>
  </dependency>

  <dependency>
   <groupId>ch.qos.logback</groupId>
   <artifactId>logback-classic</artifactId>
   <version>1.1.3</version>
  </dependency>

配置信息：

spring.application.name = microservice-api-gateway
server.port= 8060
eureka.instance.hostname=gateway
eureka.client.serviceUrl.defaultZone=http://peer1:8762/eureka/,http://peer2:8761/eureka/

 

 在启动类添加Zuul代理注解

@SpringBootApplication
@EnableZuulProxy

启动后，可以通过Zuul服务地址：端口/eureka服务名小写/eureka服务资源***

可以配置映射路径：zuul.routes.microservice-provider-user.path = /user-provider/**

zuul.routes.servicename.path:servicename 和 eureka服务id不一致时，需要配置service-id

zuul.routes.user.path = /**

zuul.routes.user.service-id = microservice-provider-user

zuul.ignored-services = microservice-provider-user 忽略eureka上的一些服务