SpringBoot项目中feignClient使用方式

# feign client 配置
hystrix:
  threadpool:
    default:
      coreSize: 500
      maxQueueSize: -1
      queueSizeRejectionThreshold: 10000
  command:
    default:
      circuitBreaker:
        requestVolumeThreshold: 1500
      execution:
        #（超时时间）
        timeout:
          enabled: false
        #（上下文传递）
        isolation:
          strategy: SEMAPHORE
          semaphore:
            maxConcurrentRequests: 1500
            maxSemaphores: 1500
ribbon:
  ConnectTimeout: 50000000
  ReadTimeout: 500000000

scanBasePackageClasses = FeignInterceptor.class, scanBasePackages = {"com.example"}

FeignInterceptor用来扫描 传递上下文的拦截器
 {"com.example"}用来扫描自己的包
 @EnableFeignClients（主类上）扫描被@FeignClient注解的接口
  
@EnableFeignClients
@SpringBootApplication(scanBasePackageClasses = FeignInterceptor.class, scanBasePackages = {"com.example"})

 @Configuration
public class  WebAppConfig extends WebMvcConfigurerAdapter {
 
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        //注册自定义拦截器，添加拦截路径和排除拦截路径
        registry.addInterceptor(new XsyRestContextInterceptor());
    }
}

@FeignClient("manager-service", configuration = FeignInterceptor.class)

@FeignClient("manager-service")
public interface PaasAggFeignClient {
    @RequestMapping(value = "/api/xxxx/test/description", method = RequestMethod.GET)
    String testDescription();
 
    @RequestMapping(value = "/api/xxxx/test/{id}", method = RequestMethod.GET)
    String testInfo(@PathVariable("id") Long id);
 
    @RequestMapping(value = "/api/xxxx/test/", method = RequestMethod.POST, consumes = {MediaType.APPLICATION_JSON})
    String testCreate(@RequestBody JSONObject jsonObject);
 
    @RequestMapping(value = "/api/xxxx/test/{id}", method = RequestMethod.DELETE)
    String testDelete(@PathVariable("id") Long id);
 
    @RequestMapping(value = "/api/xxxx/test/{id}", method = RequestMethod.PATCH, consumes = {MediaType.APPLICATION_JSON})
    String testUpdate(@PathVariable("id") Long id, @RequestBody JSONObject jsonObject);
}

@Resource
private PaasAggFeignClient paasAggFeignClient;
 
String paasAggResult = paasAggFeignClient.testDescription();
 
String paasAggResult = paasAggFeignClient.testCreate(entity);
 
String paasAggResult = paasAggFeignClient.testDelete(id);
 
.....