小编Jig*_*ati的帖子

我有以下代码.

我想根据状态代码得到不同的错误消息,如果成功它应该返回对象..如何从一个方法返回这种不同的数据类型？

public EstimateTimeResult getEstimateTime(@RequestBody EstimateTimeCall estimateTimeCall,@PathVariable("empid") Long empid) throws IOException{
        String URL=baseApi+"/estimates/time";
        if(estimateTimeCall.getProduct_id().isEmpty() || estimateTimeCall.getProduct_id()==null || estimateTimeCall.getProduct_id()==""){
            URL+="?start_latitude="+estimateTimeCall.getStart_latitude().toString()+"&start_longitude="+estimateTimeCall.getStart_longitude().toString();
        }else{
            URL+="?start_latitude="+estimateTimeCall.getStart_latitude().toString()+"&start_longitude="+estimateTimeCall.getStart_longitude().toString()+"&product_id="+estimateTimeCall.getProduct_id();
        }
        //Header Set
        HttpHeaders requestHeaders=getHeader(empid);
         //Do Request
         HttpEntity requestEntity=new HttpEntity(requestHeaders);
         ResponseEntity<EstimateTimeResult> response=restTemplate.exchange(URL,HttpMethod.GET,requestEntity,EstimateTimeResult.class);  
         org.springframework.http.HttpStatus statusCode=response.getStatusCode();            
         if(statusCode.value()==422){
             return "Required start latitude,longitude";
         }
         return  response.getBody();                    
    }