所需材料：
- 一个普通的服务（本文起名：feign-provider）注册到注册中心
- feign client （本文起名：feign-consumer）注册到注册中心
创建feign-provider
依赖
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| <dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-openfeign</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
</dependency>
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| @RestController
public class SController {
@GetMapping("api")
public String api(){
return "i am from feign-provider";
}
}
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| server:
port: 8088
spring:
application:
name: feign-provider
eureka:
client:
serviceUrl.defaultZone: http://www.wekri.com/eureka
instance:
hostname: localhost
instance-id: feign-provider
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创建feign-consumer
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| <dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-openfeign</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
</dependency>
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| import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.openfeign.EnableFeignClients;
@SpringBootApplication
@EnableDiscoveryClient
@EnableFeignClients
public class FeignConsumerApplication {
public static void main(String[] args) {
SpringApplication.run(FeignConsumerApplication.class, args);
}
}
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| import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class CController {
@Autowired
FeClient feClient;
@GetMapping("/consume")
public String consume() {
return feClient.consumer();
}
}
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| import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.GetMapping;
@FeignClient("feign-provider")
public interface FeClient {
@GetMapping("/api")
String consumer();
}
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| server:
port: 8087
spring:
application:
name: feign-consumer
eureka:
client:
serviceUrl.defaultZone: http://www.wekri.com/eureka
instance:
hostname: localhost
instance-id: feign-consumer
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启动后调用http://127.0.0.1:8087/consume,就可以看到
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| i am from feign-provider
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本文源码