feign调用返回object类型转换 引入依赖

com.fasterxml.jackson.corejackson-databind2.9.8

/*** @Description: 将数据转换到相应的容器* @param bean* @param clazz* @return* @throws* @author dlh* @date 2019/3/19 10:28*/ public static T convertValue(Object bean, Class clazz){try{ObjectMapper mapper = new ObjectMapper(); return mapper.convertValue(bean, clazz); }catch(Exception e){logger.error("错误的转换：BeanUtil.convertValue() --->" + e.getMessage()); return null; } }

SpringCloud feign接口转换服务 【feign调用返回object类型转换方式】Feign是通过提供面向接口操作的方式来替代RestTemplate API的Rest操作。
使用Feign
Feign这种技术应用在服务消费端
修改pom.xml配置文件，加入Feign的依赖包

org.springframework.cloudspring-cloud-starter-feign

由于Fegin是将Rest的操作转换成接口的形式，所以我们需要新建一个接口，并在接口上声明@FeignClient注解

@FeignClient(value = "https://www.it610.com/article/DEPT-PROVIDER",configuration = FeignClientConfig.class)public interface DeptClientService {@RequestMapping(method= RequestMethod.GET,value="https://www.it610.com/dept/get/{id}")public Dept get(@PathVariable("id") long id) ; @RequestMapping(method=RequestMethod.GET,value="https://www.it610.com/dept/list")public List list() ; @RequestMapping(method=RequestMethod.POST,value="https://www.it610.com/dept/add")public boolean add(Dept dept) ; }@Configurationpublic class FeignClientConfig {@Beanpublic Logger.Level getFeignLoggerLevel() {return feign.Logger.Level.FULL ; }@Beanpublic BasicAuthRequestInterceptor getBasicAuthRequestInterceptor() {return new BasicAuthRequestInterceptor("admin", "admin"); }}

其中configuration = FeignClientConfig.class不是必须的，将configuration属性去除仍然能work。
将之前的Rest操作的API，替换成面向DeptClientService接口的形式

@RestController@RequestMapping("/consumer/dept")public class ConsumerDeptController {@Autowiredprivate DeptClientService deptClientService; @RequestMapping(value = "https://www.it610.com/get")public Dept get(long id) {return this.deptClientService.get(id); }@RequestMapping("/list")public List list(){return this.deptClientService.list(); }@RequestMapping("/add")public boolean add(Dept dept){return this.add(dept); }/*public static final String DEPT_GET_URL = "http://DEPT-PROVIDER/dept/get/"; public static final String DEPT_LIST_URL = "http://DEPT-PROVIDER/dept/list/"; public static final String DEPT_ADD_URL = "http://DEPT-PROVIDER/dept/add"; @Autowiredprivate RestTemplate restTemplate; @Autowiredprivate HttpHeaders httpHeaders; @Autowiredprivate LoadBalancerClient loadBalancerClient; @RequestMapping(value = "https://www.it610.com/get")public Dept get(long id) {ServiceInstance serviceInstance = this.loadBalancerClient.choose("DEPT-PROVIDER") ; System.out.println("【*** ServiceInstance ***】host = " + serviceInstance.getHost()+ "、port = " + serviceInstance.getPort()+ "、serviceId = " + serviceInstance.getServiceId()); //Dept dept = restTemplate.getForObject(DEPT_GET_URL + id, Dept.class); Dept dept = restTemplate.exchange(DEPT_GET_URL+id, HttpMethod.GET,new HttpEntity