springboot整合OpenFeign

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我是靠谱客的博主开放小伙，最近开发中收集的这篇文章主要介绍springboot整合OpenFeign，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

项目地址（gitee）: https://gitee.com/qinenqi/online
springboot整合OpenFeign来提供声明式服务调用

前提是已经整合了nacos,并有了online-cart、online-coupon和online-gateway这三个服务
online-cart服务引入依赖

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

 <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <properties>
        <java.version>1.8</java.version>
        <spring-cloud.version>Greenwich.SR3</spring-cloud.version>
    </properties>

OnlineCartApplication启动类添加注解：@EnableFeignClients(basePackages = “com.example.onlinecart.feign”)
新建feign包，在该包下新建CouponFeignService


import com.example.onlinecart.feign.CouponFeignService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * 测试远程调用
 */
@RestController
@RequestMapping("/feignController")
public class FeignController {

    @Autowired
    private CouponFeignService couponFeignService;

    /**
     * cart调用coupon的方法
     * @return
     */
    @RequestMapping("/testCoupon")
    public String testCoupon(){
        String test = couponFeignService.test();
        test = "测试远程调用 cart调用coupon的方法，得到的返回值是：" + test;
        return test;
    }
}