Spring - 리본 클 라 이언 트 부하 균형

/*   Eureka     */
@EnableDiscoveryClient
@SpringBootApplication
public class SpringBootTestRibbonConsumerApplication {

    /* ，                */
    @Bean
    @LoadBalanced
    TestRestTemplate restTemplate(){
        return  new TestRestTemplate();
    }

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

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

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



    
        
            org.springframework.cloud
            spring-cloud-dependencies
            Brixton.SR5
            pom
            import
        
    

spring.application.name=ribbon-consumer
server.port=9000

eureka.client.service-url.defaultZone=http://localhost:1111/eureka/

#      hello-service       

#         ，     。
spring.cloud.loadablancer.retry.enabled = true
#             Ribbon     ，        
hystrix.command.default.execution.isolation.thread.timeoutInMilliseconds = 10000
#         
hello-service.ribbon.ConnectTimeout=250
#         
hello-service.ribbon.ReadTimeout=1000
#             
hello-service.ribbon.OkRoRetryOnAllOperations = true
#          
hello-service.ribbon.MaxAutoRetriesNextServer = 2
#            
hello-service.ribbon.MaxAutoRetries = 1

### sample-client in baidu
## Max number of retries
#ribbon.MaxAutoRetries=1
## Max number of next servers to retry (excluding the first server)
#ribbon.MaxAutoRetriesNextServer=1
## Whether all operations can be retried for this client
#ribbon.OkToRetryOnAllOperations=true
## Interval to refresh the server list from the source
#ribbon.ServerListRefreshInterval=2000
## Connect timeout used by Apache HttpClient
#ribbon.ConnectTimeout=3000
## Read timeout used by Apache HttpClient
#ribbon.ReadTimeout=3000
## Initial list of servers, can be changed via Archaius dynamic property at runtime
#ribbon.listOfServers=testserver1:80,testserver2 :80,testserver3:80
#ribbon.EnablePrimeConnections=true

@RestController
public class UsedHelloController {

    /*             */
    @Autowired
    RestTemplate restTemplate;

    @RequestMapping(value = "ribbon-consumer",method = RequestMethod.GET)
    public String helloConsumer(){
        /* ，                 */
        return restTemplate.getForEntity("http://hello-service/hello",String.class).getBody();
    }

    // RestTemplate   
    @RequestMapping(value = "ribbon-consumer-get",method = RequestMethod.GET)
    public String helloConsumerTestGet(){
        /*getForEntity   1：  3   
        * String URL：    
        * Class responseType:    
        * Object... urlVariables：          */
        ResponseEntity responseEntity = restTemplate.getForEntity("http://hello-service/hello?name={1}",String.class,"  1");
        String body = responseEntity.getBody();

        /*getForEntity   2：  3   
         * String URL：    
         * Class responseType:    
         * Map urlVariables :     Map
         */
        Map params = new HashMap<>();
        params.put("name","name");
        responseEntity = restTemplate.getForEntity("http://hello-service/hello?name={name}",String.class,params);
        body = responseEntity.getBody();

         /*getForEntity   3：  2   
          * URI: java.net                
          * Class responseType:    
          *   :  ╮(╯_╰)╭ */

         /*      3     getForObject（。。。）      3    */
        return body;
    }

    @RequestMapping(value = "ribbon-consumer-post",method = RequestMethod.POST)
    public String helloConsumerTestPost(){
        User user = new User("name");
   //   String user = new String();
        ResponseEntity responseEntity = restTemplate.postForEntity("http://hello-service/hello",user,String.class);
        /*       ，           ，              */
        String body = responseEntity.getBody();
        return body;
        /* get     3    ，             
        *    postForObject   postForLocation */
    }

    public class User {
        private String name;

       public User(String name){
            this.name = name;
        }

        public User() {

        }
    }

    @RequestMapping(value = "ribbon-consumer-put",method = RequestMethod.PUT)
    public String helloConsumerTestPut(){
        User user = new User("name");
        Long id = 100L;
        restTemplate.put("http://hello-service/hello/{1}",user,id);
        /*     3    ，  put        */
        return null;
    }

    @RequestMapping(value = "ribbon-consumer-del",method = RequestMethod.DELETE)
    public String helloConsumerTestDel(){
        User user = new User("name");
        Long id = 100L;
        restTemplate.delete("http://hello-service/hello/{1}",id);
        /*     3    ，  put        */
        return null;
    }

}