Ribbon--初步配置

浅浅的花香味﹌ 2021-08-26 18:57 341阅读 0赞

修改microservicecloud-consumer-dept-80工程：  
添加依赖：

<dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-eureka</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-ribbon</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-config</artifactId>
            </dependency>
    
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>

修改application.yml 追加eureka的服务注册地址:

server:
      port: 80
    
    eureka:
      client:
        register-with-eureka: false
        service-url:
          defaultZone: http://eureka7001.com:7001/eureka/, http://eureka7002.com:7002/eureka/, http://eureka7003.com:7003/eureka/

对ConfigBean进行新注解@LoadBalanced 获得Rest时加入Ribbon的配置:

@Configuration
    public class ConfigBean { 
    
        /* RestTemplate提供了多种便捷访问远程HTTP服务的方法 是一种简单便捷的访问restful服务模板类，是Spring提供的用于访问Rest服务的客户端模板工具集 url：REST请求地址 requestMap：请求参数 ResponseBean.class：HTTP响应转换被转换成的对象类型 */
        @Bean
        @LoadBalanced //开启客户端的负载均衡
        public RestTemplate getRestTemplate(){ 
            return new RestTemplate();
        }
    
    }

主启动类DeptConsumer80\_App添加@EnableEurekaClient:

@SpringBootApplication
    @EnableEurekaClient
    public class DeptCondumer80_App { 
    
        public static void main(String[] args) { 
            SpringApplication.run(DeptCondumer80_App.class, args);
        }
    }

修改DeptController\_Consumer客户端访问类:

@RestController
    public class DeptController_Consumer { 
    
        //private static final String REST_RUL_PREFIX = "http://localhost:8001";
        private static final String REST_RUL_PREFIX = "http://MICROSERVICECLOUD-DEPT";
    
    
        @Autowired
        RestTemplate restTemplate;
    
        @RequestMapping(value = "/consumer/dept/add")
        public boolean add(Dept dept){ 
            return restTemplate.postForObject(REST_RUL_PREFIX + "/dept/add", dept, Boolean.class);
        }
    
        @RequestMapping(value = "/consumer/dept/get/{id}")
        public Dept get(@PathVariable("id") Long id){ 
            return restTemplate.getForObject(REST_RUL_PREFIX + "/dept/get/" + id, Dept.class);
        }
    
        @RequestMapping(value = "consumer/dept/list")
        public List<Dept> list(){ 
            return restTemplate.getForObject(REST_RUL_PREFIX + "/dept/list", List.class);
        }
    }

先启动3个eureka集群后，再启动microservicecloud-provider-dept-8001并注册进eureka:

启动microservicecloud-consumer-dept-80:

测试:

http://localhost/consumer/dept/get/1

![在这里插入图片描述][20200221191827865.png]

http://localhost/consumer/dept/list  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NvbGRfX19wbGF5_size_16_color_FFFFFF_t_70]

http://localhost/consumer/dept/add?dname=大数据部  
![在这里插入图片描述][20200221191925298.png]

Ribbon和Eureka整合后Consumer可以直接调用服务而不用再关心地址和端口号

[20200221191827865.png]: /images/20210813/9935ec66af594c51ae7743ccf7ea9c83.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NvbGRfX19wbGF5_size_16_color_FFFFFF_t_70]: /images/20210813/0bfa1dd2ea694337a5f231bb8aec7d29.png
[20200221191925298.png]: /images/20210813/5696781ce7e1412ca07f79a0219afefe.png