OpenFeign动态URL测试Demo

package com.mnyc.service; import com.mnyc.http.FeignTestClient; import com.mnyc.model.User; import feign.Feign; import feign.form.spring.SpringFormEncoder; import feign.optionals.OptionalDecoder; import lombok.extern.slf4j.Slf4j; import org.springframework.beans.factory.ObjectFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.autoconfigure.http.HttpMessageConverters; import org.springframework.cloud.openfeign.FeignClientsConfiguration; import org.springframework.cloud.openfeign.support.ResponseEntityDecoder; import org.springframework.cloud.openfeign.support.SpringDecoder; import org.springframework.cloud.openfeign.support.SpringEncoder; import org.springframework.cloud.openfeign.support.SpringMvcContract; import org.springframework.context.annotation.Import; import org.springframework.stereotype.Service; @Slf4j @Service //网上说的需要在调用的地方导入该配置类，最后我屏蔽掉该代码好像也可以 @Import(FeignClientsConfiguration.class) public class FeignTestService { @Autowired ObjectFactory<HttpMessageConverters> messageConverters; String flag = "TestClient"; private FeignTestClient createFeignClient() { //1、在创建Feign客户端的时候最核心的对象是decoder、encoder、contract //通过跟踪源码与SpringBoot自动创建的Feign对象比较，设置decoder、encoder、 //contract为SpringBoot中自动创建对象相同，然后定义Feign接口的时候， //各种参数的注解和方法的注解就可以和不动态修改url的相同了 //decoder解码器，对返回的结果进行解码 OptionalDecoder decoder = new OptionalDecoder(new ResponseEntityDecoder(new SpringDecoder(messageConverters))); //encoder编码器，对输入的数据进行编码 SpringEncoder springEncoder = new SpringEncoder(messageConverters); SpringFormEncoder encoder = new SpringFormEncoder(springEncoder); //该对象是将接口进行解析，方便生成最后调用的网络对象HttpurlConnection SpringMvcContract contract = new SpringMvcContract(); FeignTestClient feignTestClient = Feign.builder() .decoder(decoder) .encoder(encoder) .contract(contract) //这个地方的Url可以根据每次调用的时候进行改变 .target(FeignTestClient.class, "http://localhost:8080/server");//传入url return feignTestClient; } public void get() { try { FeignTestClient feignClient = createFeignClient(); String result = feignClient.getMethod(flag); log.info("TEST ========= " + result); } catch (Exception ex) { ex.printStackTrace(); } } public void post() { try { String result = ""; User user = new User(); user.setName("name"); user.setAge(100); FeignTestClient feignClient = createFeignClient(); result = feignClient.postMethod(flag, user); log.info("TEST ========= " + result); } catch (Exception ex) { ex.printStackTrace(); } } public void put() { try { String result = ""; User user = new User(); user.setName("name"); user.setAge(100); FeignTestClient feignClient = createFeignClient(); result = feignClient.putMethod(flag, user); log.info("TEST ========= " + result); } catch (Exception ex) { ex.printStackTrace(); } } public void delete() { try { String result = ""; User user = new User(); user.setName("name"); user.setAge(100); FeignTestClient feignClient = createFeignClient(); result = feignClient.deleteMethod(flag); log.info("TEST ========= " + result); } catch (Exception ex) { ex.printStackTrace(); } } public void path() { try { String result = ""; User user = new User(); user.setName("name"); user.setAge(100); FeignTestClient feignClient = createFeignClient(); result = feignClient.pathMethod(flag, user); log.info("TEST ========= " + result); } catch (Exception ex) { ex.printStackTrace(); } } }