【feign】demo

最新推荐文章于 2024-09-13 15:47:13 发布

hkk666123

最新推荐文章于 2024-09-13 15:47:13 发布

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分类专栏： Feign 文章标签： feign OpenFeign简单使用 OpenFeign-Demo

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SpringBoot集成feign

核心

引入jar: spring-cloud-starter-openfeign
配置yml: feign.service.url: https://www.baidu.com/doc
启动feign-client: @EnableFeignClients
编写feign服务: FeignService.java
调用feign服务

示例代码

在`pom.xml`添加`feign`依赖

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-openfeign</artifactId>
    <version>3.0.0</version>
</dependency>

在`application.yml`添加URL

weather.api.url: https://tianqiapi.com

在启动类添加`@EnableFeignClients`

@EnableFeignClients
@SpringBootApplication
public class FeignApplication {

    public static void main(String[] args) {
        SpringApplication.run(FeignApplication.class, args);
    }

}

编写feign服务

@FeignClient(url = "${weather.api.url}", name = "weather")
public interface WeatherService {

    /**
     * 查询指定城市天气状态
     * @param appId     AppId
     * @param appSecret AppSecret
     * @return 天气状况
     */
    @GetMapping("/api?version=v6&appid={appId}")
    JSONObject getEngineMessage(@PathVariable("appId") String appId, @RequestParam("appsecret") String appSecret);

}

调用feign服务

@Service
public class FeignService {

  @Resource
  private WeatherService weatherService;

  public JSONObject getWeatherMessage() {
    return weatherService.getEngineMessage("appId", "appSecret");
  }

}