spring-cloud-openFeign详解

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            org.springframework.cloud
            spring-cloud-starter-openfeign
                   2.2.5.RELEASE
        

使用@FeignClient（name = 服务名，path = 服务下controller类上路径，configuration = feign配置）

package com.mj.feign.serive.nacos;

import com.mj.feign.config.FeignConfig;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.GetMapping;

@FeignClient(name = "api-nacos", path = "/nacos", configuration = FeignConfig.class)
public interface NacosFeignService {

    @GetMapping("/get")
    String getUsername();
}

添加@EnableFeignClients 可以指定包名@EnableFeignClients({“com.mj.feign.*”})

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

package com.mj.feign.config;

import com.mj.feign.intercept.CustomizeIntercept;
import feign.Logger;
import feign.Request;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;


@Configuration
public class FeignConfig {

    
    @Bean
    public Logger.Level feignLoggerLevel() {
        return Logger.Level.FULL;
    }

    
    @Bean
    public Request.Options options(){
        // 连接超时时间   读取超时时间
        return new Request.Options(5000,10000);
    }

    

    @Bean
    public CustomizeIntercept customizeIntercept(){
        return new CustomizeIntercept();
    }
}