springcloud服务调用

provider

引用

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>

配置

spring:
  application:
    name: provider1
server:
  port: 0 # 随机端口
eureka:
  client:
    service-url:
      defaultZone: http://localhost:8761/eureka
  instance:
    instance-id: ${spring.application.name}:${random.int} # 如果端口随机，则必须设置
    prefer-ip-address: true

启动

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

提供服务

@RestController
public class ProController {
    @RequestMapping("/hello")
    public String index(@RequestParam String name) {
        return "hello "+name+"，this is first messge";
    }
}

consumer

1、引用

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-openfeign</artifactId>
        </dependency>

2、配置

spring:
  application:
    name: comsumer1
server:
  port: 8886
eureka:
  client:
    service-url:
      defaultZone: http://localhost:8761/eureka
  instance:
    prefer-ip-address: true

3、启动

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

4、调用provider

必须添加：RequestParam

    import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
@FeignClient("PROVIDER1")
public interface ProviderService {
    @GetMapping("/hello")
    public String hello(@RequestParam("name") String name);
}

controller正常调用即可：

@RestController
public class ConsumerController {
    @Autowired
    private ProviderService providerService;
    @GetMapping("/hello")
    public String hello(String name) {
        return providerService.hello(name);
    }
}