Error creating bean with name 'com.cloud.feign.interfaces.xxxFeignClient': FactoryBean threw excepti

環境：

　　Spring Cloud：Finchley.M8

　　Spring Boot：2.0.0.RELEASE

 

報錯信息：

　　

Error creating bean with name 'com.cloud.feign.interfaces.xxxFeignClient': FactoryBean threw exception on object creation; nested exception is java.lang.IllegalSt.PathVariable annotation was empty on 

 

Feign接口代碼：

@FeignClient(value = "SPRING-CLOUD-WEB-PROVIDER-GROUP2")
public interface SongFeignClient {
    @GetMapping("/call/{id}")
    public Object getSongInfo(@PathVariable int id);
}

報錯信息關鍵點：

　　

PathVariable annotation was empty on 

　　

問題就出在接口方法入參@PathVariable註解這裏，在Spring Mvc中能夠不明確指定該註解對應的參數名稱，但在feign中必須指定，不然將保如上異常，修後的正確代碼以下：

@FeignClient(value = "SPRING-CLOUD-WEB-PROVIDER-GROUP2")
public interface SongFeignClient {
    @GetMapping("/call/{id}")
    public Object getSongInfo(@PathVariable("id") int id);
}