基于Feign传输对象无法接收参数的问题

 @RequestMapping(value = "/oauth/client/save")
 Integer saveClient(@RequestBody ClientInfo clientInfo);

@RequestBody(required = false)

    @FeignClient(value = "transaction-feign")
    public interface TransactionApiService {
        
        @RequestMapping(value = "/dealflow/list", method = RequestMethod.POST)
        JSONResultDO dealFlowList(@RequestBody(required = false) DealFlowDo param
                , @RequestParam(value = "pageNum", defaultValue = "1") Integer pageNum
                , @RequestParam(value = "pageSize", defaultValue = "20") Integer pageSize);
    }

@RequestMapping(value = "/dealflow/list", method = RequestMethod.POST)
public Page<DealFlowDo> dealFlowList(@RequestBody(required = false) DealFlowDo param
        , @RequestParam(value = "pageNum", defaultValue = "1") Integer pageNum
        , @RequestParam(value = "pageSize", defaultValue = "20") Integer pageSize
        , @RequestParam(value = "userId") Long userId){
    jsonResultDO resultDO = new JsonResultDO();
    Page<DealFlowDo> page = (Page<DealFlowDo> )dealFlowService.queryDealFlowList(userId, param, pageNum, pageSize);
    return page;
}

@RequestParam/@PathVariable
    @RequestMapping(value = "/merchant/{merNo}", method = RequestMethod.GET)
    String getMerchantByMerNo(@PathVariable("merNo") String merNo);