SpringCloud如何利用Feign访问外部http请求

@FeignClient(value = "test",url = "http://ip:port")
public interface TestFeign {
    
    @PostMapping(value = "/Amap/geo")
    Object geo(@RequestBody GeoEntity entity);
 
    
    @PostMapping(value = "/Amap/regeo")
    Object regeo(@RequestBody RegeoEntity entity);  
    .........
    ...........
}

 <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-openfeign</artifactId>
            <version>2.0.1.RELEASE</version>
        </dependency>
 
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
            <version>2.0.1.RELEASE</version>
        </dependency>
 
        <!-- 引入 httpclient -->
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
        </dependency>
        <dependency>
            <groupId>com.netflix.feign</groupId>
            <artifactId>feign-httpclient</artifactId>
            <version>8.18.0</version>
        </dependency>

feign:
  httpclient:
    enabled: true
  hystrix:
    enabled: true
hystrix:
  command:
    default:
      execution:
        isolation:
          thread:
            timeoutInMilliseconds: 3000  #降级超时时间,我设置为3秒。 feign.retry默认超时时间是5s.

public interface HttpRequestFeign { 
    @RequestLine("GET")
    String sendGetRequest(URI baseUri);
 
    @RequestLine("POST")
    String sendPostRequest(URI baseUri, Map map);
}

 @Autowired
    public BaseController(Decoder decoder, Encoder encoder) {
        httpRequestFeign = Feign.builder().encoder(encoder).decoder(decoder)
                .target(Target.EmptyTarget.create(HttpRequestFeign.class)); 
    }
 protected String httpPostSend( String url, Map map) {
        String response = "";
        try {
            response = httpRequestFeign.sendPostRequest(new URI(url), map);
            logger.info("调用外部服务返回的数据为->{}", response);
            // 这里改成重试的超时异常
        } catch (RetryableException a) {
            logger.error("调用外部服超时错误->{}", response);
        } catch (Exception e) {
            logger.error("调用外部服异常错误->{}", response);
        }
        return response;
    }

 @HystrixCommand(fallbackMethod = "fallback")
 @PostMapping(value = "/1_0_0/{subServer}", produces = "application/JSON;charset=UTF-8")
 public Object send(@RequestBody Map<String, Object> map, @PathVariable String subServer) {
 
.......................
.................... 
 
 private Object fallback(Map<String, String> map, String subserver, Throwable e) {
        logger.error("xxx服务发生问题,入参:{},地址:{}", map, subserver);
        return Result.fail(ResultCode.INTERNAL_SERVER_ERROR.getCode(), ERROR_MSG + e.toString());
    }

<dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-openfeign</artifactId>
                <version>2.0.2.BUILD-SNAPSHOT</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
    <dependencies>
<!--外部http请求 FeignClient-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-openfeign</artifactId>
        </dependency>
</dependencies>
<repositories>
        <!--外部http请求 FeignClient-->
        <repository>
            <id>spring-snapshots</id>
            <name>Spring Snapshots</name>
            <url>https://repo.spring.io/libs-snapshot</url>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </repository>
    </repositories>

@SpringBootApplication
@MapperScan("com.sichuang.repository.dao")//将项目中对应的mapper类的路径加进来就可以了
@ServletComponentScan
@EnableFeignClients
public class RepositoryApplication extends SpringBootServletInitializer{
    public static void main(String[] args) {
        SpringApplication.run(RepositoryApplication.class, args);
    }
    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
        // TODO Auto-generated method stub
//      return super.configure(builder);
        return builder.sources(RepositoryApplication.class);
    }
}

package com.sichuang.repository.api;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.http.MediaType;
import org.springframework.WEB.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import java.util.Map;

@FeignClient(url = "${url}", name = "Ewaytec2001API")
public interface Ewaytec2001API {
    
    @GetMapping(value = "${url}", produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
    String getEmployeeInfo(@RequestParam("id") int id, @RequestParam("sign") String sign);
}