Feign

获取不到bean

一直获取不到bean，注解都加了，仍然获取不到。在@EnableCloudFeignClients上添加basePackages = {"com.xx.cloud","com.xx.object.api.feign"}强制扫描，提示

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'm.xx.object.api.feign.BoApiService': FactoryBean threw exception on object creation; nested exception is java.lang.IllegalStateException: PathVariableannotation was empty on param 0.

解决方法：

使用Feign的时候,如果参数中带有@PathVariable形式的参数,则要用value=""标明对应的参数,否则会抛出IllegalStateException异常

@PutMapping("/disuseable/{sn}")
ApiResponse disUseAble(@PathVariable String sn);   // wrong

//改成
@PutMapping("/disuseable/{sn}")
ApiResponse disUseAble(@PathVariable(value="sn") String sn);  // right