openfeign调用异常：feign.FeignException: [405] during [GET]

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feign调用异常如下：

feign.FeignException$MethodNotAllowed: [405] during [GET] to [http://order-server/order/info] [OrderClient#orderInfo(Integer)]: [{"timestamp":"2022-05-21T13:05:49.129+00:00","status":405,"error":"Method Not Allowed","message":"","path":"/order/info"}]
 	at feign.FeignException.clientErrorStatus(FeignException.java:203)
 	at feign.FeignException.errorStatus(FeignException.java:177)
 	at feign.FeignException.errorStatus(FeignException.java:169)
 	at feign.codec.ErrorDecoder$Default.decode(ErrorDecoder.java:92)

看异常信息，应该是请求方式不对， 修改请求方式为POST；
如果请求方式也正确，检查下feign请求参数，看是否缺少@RequestParam注解：

@FeignClient(value = "order-server")
public interface OrderClient {

    @GetMapping("order/info")
    String orderInfo(@RequestParam("orderId")Integer orderId);
}

OpenFeign需要@RequestMapping、@RequestParam、@PathVariable、@RequestHeader等来构造http请求。
此处通过添加@RequestParam(“orderId”)解决。