@EnableFeignClients(basePackages = {"cn.netkiller.openfeign"})		
		
		

		
@Configuration
@EnableFeignClients
public class FeignConfiguration {
    @Bean
    public Contract feignContract() {
        return new feign.Contract.Default();
    }

    @Bean
    public BasicAuthRequestInterceptor basicAuthRequestInterceptor() {
        return new BasicAuthRequestInterceptor("user", "password");
    }
}		
		
		

		
@FeignClient(name="myServiceName", url="localhost:8888")
public interface OpenfeignService {
	@RequestMapping("/")
	public String getName();
}		
		
		

系统默认是 httpclient

			
		<dependency>
            <groupId>io.github.openfeign</groupId>
            <artifactId>feign-httpclient</artifactId>
        </dependency>
			
			
			

		
feign.httpclient.enabled=true
feign.httpclient.max-connections=1000
feign.httpclient.max-connections-per-route=50
		
			

			
<dependency>
    <groupId>io.github.openfeign</groupId>
    <artifactId>feign-okhttp</artifactId>
</dependency>			
			
			

		
feign.httpclient.enabled=false
feign.okhttp.enabled=true
feign.httpclient.max-connections=1000
feign.httpclient.max-connections-per-route=50
		
			

https://docs.spring.io/spring-cloud-openfeign/docs/current/reference/html/appendix.html