SpringCloudFeign配置应用详细介绍

   <dependencies>
        <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>
    </dependencies>

package com.laGou.edu;
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 // 开启Feign客户端功能
public class AutoDeliverApplication8091 {
    public static void main(String[] args) {
        SpringApplication.run(AutoDeliverApplication8091.class, args);
    }
}

package com.lagou.edu.controller.service;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
// @FeignClient标明当前类是一个Feign客户端，value指定该客户端要请求的服务器名称（登记到注册中心上服务提供者的服务名称）
// name或value：调⽤的服务名称，和服务提供者yml⽂件中spring.application.name保持⼀致
@FeignClient(value = "lagou-service-resume")
@RequestMapping("/resume")
public interface ResumeServiceFeignClient {
    // feign要做的事情，拼装url发起请求
    // 我们调用该方法就是调用本地接口方法，那么实际上做的事远程请求
    @GetMapping("/openstate/{userId}")
    public Integer findDefaultResumeState(@PathVariable Long userId);
}

package com.lagou.edu.controller;
import com.lagou.edu.controller.service.ResumeServiceFeignClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
@RequestMapping("/autodeliver")
public class AutoDeliverController {
    @Autowired
    private ResumeServiceFeignClient resumeServiceFeignClient;
    @GetMapping("/checkState/{userId}")
    public Integer findResumeOpenState(@PathVariable Long userId) {
        Integer defaultResumeState = resumeServiceFeignClient.findDefaultResumeState(userId);
        return defaultResumeState;
    }
}