??????Spring Cloud??????

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Spring Cloud?????

Spring Cloud???????????????????????????

1. ????????Eureka?

Eureka ?Spring Cloud??????????????????Eureka???????????????????????????????????

2. ???????Zuul?

Zuul????????????????????????????????????????????????????????????

3. ?????Ribbon?

Ribbon?????????????????????????????????????????????????????????????????

4. ???????Hystrix?

Hystrix?????????????????????Hystrix???????????????????????????????????

?????Eureka????

1. ??Eureka Server

POM???


       
    
     org.springframework.cloud
        
    
     spring-cloud-starter-netflix-eureka-server

?????application.yml??

server:  port: 8081eureka:  instance:    prefer-ip-address: true    hostname: leo-node  client:    register-with-eureka: false    fetch-registry: false    service-url:      defaultZone: http://${eureka.instance.hostname}:8082/eureka

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@SpringBootApplication@EnableEurekaServerpublic class EurekaServerApplication {    public static void main(String[] args) {        SpringApplication.run(EurekaServerApplication.class);    }}

2. ????Eureka??

?IDE???????Eureka Server???????????????????????????????????Eureka??????????

????????Eureka???

1. POM??


         
      
       org.springframework.cloud
          
      
       spring-cloud-starter-netflix-eureka-client

2. ?????application.yml?

eureka:  client:    service-url:      defaultZone: http://leo-node:8081/eureka    register-with-eureka: true    fetch-registry: trueserver:  port: 8091

3. ???

@SpringBootApplication@EnableEurekaClientpublic class ServiceProviderApplication {    public static void main(String[] args) {        SpringApplication.run(ServiceProviderApplication.class);    }}

????????Ribbon????

1. POM??


         
      
       org.springframework.cloud
          
      
       spring-cloud-starter-netflix-ribbon

2. ?????application.yml?

eureka:  client:    service-url:      defaultZone: http://leo-node:8081/eurekaserver:  port: 9000

3. ???????

@Configurationpublic class RibbonConfig {    @LoadBalanced    @Bean    public RestTemplate restTemplate() {        return new RestTemplate();    }}

4.CONTROLLER

@RestController@RequestMapping("/consumer/ribbon")public class ConsumerController {    @Value("${server.port}")    private String port;    @Autowired    private RestTemplate restTemplate;    @RequestMapping("/sayHello")    public String test() {        return restTemplate.getForObject("http://service-provider-001/provider/sayHello", String.class);    }}