SpringQueryMap -SpringCloud feign get method 接受自定义对象参数

feign中和controller中不一样的地方
controller中可以get方法使用对象参数无需任何注解，可默认绑定到对象!

示例代码如下：

    @GetMapping(value =ClueClient.LIST_OPERATIONS)
    public CrmResult<List<RysClueOperateBO>>  getOperateLists(
            @NotNull(message = "clueId必传") @PathVariable(name = "clueId") Long clueId,
             RysClueOperateListQTO rysClueOperateListQTO) {
        log.info("clueId:{},rysClueOperateListQTO:{}",clueId,JSON.toJSON(rysClueOperateListQTO));

}

public interface ClueClient {

    String LIST_OPERATIONS  = "/clues/{clueId}/operations";

    @GetMapping(LIST_OPERATIONS)
    CrmResult<List<RysClueOperateBO>>  getOperateLists(@NotNull(message = "clueId")
                               @PathVariable(name = "clueId") Long clueId,
                                                        RysClueOperateListQTO rysClueOperateListQTO);

}

1.  spring mvc controller mapping 能自动装配参数到RysClueOperateQTO中。访问服务这个接口，能正常打印请求的参数。
2.  但消费者通过feignclient 调用服务。服务不能正常打印参数。RysClueOperateQTO是空对象。
3. 引入@SpringQueryMap注解解决问题。https://cloud.spring.io/spring-cloud-openfeign/reference/html/#feign-querymap-support

The OpenFeign @QueryMap annotation provides support for POJOs to be used as GET parameter maps. Unfortunately, the default OpenFeign QueryMap annotation is incompatible with Spring because it lacks a value property.

Spring Cloud OpenFeign provides an equivalent @SpringQueryMap annotation, which is used to annotate a POJO or Map parameter as a query parameter map.