feign调服务参数问题

遇到个问题，feign调其他服务时报了个错，如下：

Request processing failed; nested exception is java.lang.ClassCastException: java.util.LinkedHashMap cannot be cast to com.msmp.scrm.entity.base.CluePond
org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.ClassCastException: java.util.LinkedHashMap cannot be cast to com.msmp.scrm.entity.base.CluePond
     at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:982)
     at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
     at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)

意思大概是说，LinkedhashMap不能强制转换成CluePond对象。为啥会有linkedHashMap对象呢？
核心代码截取：

@FeignClient(name="scrm-base",url="localhost:8080")
public interface BaseService {
    @RequestMapping(value = "/public/base/cluePond/saveClue")
    public void saveCluePond(@RequestBody Object clue);
}

@RestController
@RequestMapping(value = "/public/base")
public class PublicBaseController {
    @Autowired
    private CluePondService cluePondService;

    @RequestMapping(value = "/cluePond/saveClue")
    public void saveCluePond(@RequestBody Object buClue){
         cluePondService.save(buClue);
    }
}

@Service
public class CluePondService {
    public void save(Object buClue) {
         cluePond = (CluePond)buClue;//报错地方，强制转换报错
    }
}

会出现这个原因，主要是feign传递参数封装时的原因。
@RequestParam 指定的参数会拼接在URL之后，如: ?name=xxx&age=18
@PathVariable 指定的参数会放到一个LinkedHashMap<String, ?>中
@RequestBody 指定对象中的各属性放到一个LinkedHashMap<String,?>中

如以上buClue对象：