@FeignClient 添加请求头header的4种方法

一、单个Feign请求添加header

方法1.在@RequestMapping中添加

@FeignClient(url = "${orderServer_domain:http://order:8082}",value = "order-server",contextId = "OrderServerClient",path = "/api/order")
public interface OrderRemoteClient {@RequestMapping(value="/detail", method = RequestMethod.POST,headers = {"Content-Type=application/json;charset=UTF-8"})Order detail(@RequestParam("orderId") String orderId);
}

方法2. 使用@RequestHeader注解添加

@FeignClient(url = "${orderServer_domain:http://order:8082}",value = "order-server",contextId = "OrderServerClient",path = "/api/order")
public interface OrderRemoteClient {@RequestMapping(value="/detail", method = RequestMethod.POST)List<String> detail(@RequestHeader Map<String, String> headerMap, @RequestParam("orderId") String orderId);
}

方法3. 使用@Headers注解添加

@FeignClient(url = "${orderServer_domain:http://order:8082}",value = "order-server",contextId = "OrderServerClient",path = "/api/order")
public interface OrderRemoteClient {@RequestMapping(value="/detail", method = RequestMethod.POST)@Headers({"Content-Type: application/json;charset=UTF-8"})List<String> detail(@RequestHeader Map<String, String> headerMap, @RequestParam("orderId") String orderId);
}

二、全局Feign请求添加header

实现RequestInterceptor接口

@Configuration
public class FeignRequestInterceptor implements RequestInterceptor {@Overridepublic void apply(RequestTemplate requestTemplate) {ServletRequestAttributes attributes = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes());if (attributes != null) {HttpServletRequest request = attributes.getRequest();requestTemplate.header(HttpHeaders.AUTHORIZATION,  request.getHeader(HttpHeaders.AUTHORIZATION));requestTemplate.header("proxyHost", request.getHeader("proxyHost"));}}
}