ajax json提交到控制层

js:

var useData = [];

$.ajax({
        url: "/dealer/dealerShoper/synShopers",
        method: "post",
        data: JSON.stringify(useData),
        contentType: 'application/json',
        dataType: "json",
        success: function(data){
            console.log(data);
            callback && callback();
            __d.hide();
        }
    })

controller:

 @ResponseBody
 @RequestMapping("/synShopers")
public JsonMessage  synShopersForClear(@RequestBody List<JSONObject> jsonList) throws BusinessException {
     UserPrincipal userPrincipal =  OnLineUserUtils.getPrincipal();

  if(null != jsonList && null != userPrincipal && userPrincipal.getUserType().equals(DealerConstant.userType.DEALER_TYPE))
  {
      List<Map<String,Object>> dealerShoperList = Lists.newArrayList();
      for (JSONObject jsonObject : jsonList) {
          ProductSku productSku =  productSkuService.findProductSku((String)jsonObject.get("skuId"));
          Map<String,Object> map = Maps.newHashMap();
          map.put("skuId", (String) jsonObject.get("skuId"));
          if(null != productSku)
          {
              Boolean isChange =  false ;
              short productType  = (short)jsonObject.get("productType");
              BigDecimal productSkuPrice = (BigDecimal)jsonObject.get("productSkuPrice");
              Integer quantity = jsonObject.getInteger("quantity");
              map.put("productSkuPrice",productSkuPrice);
              map.put("quantity", productSku.getQuantity());
              map.put("isValid", true);
              if(productType == DealerConstant.DealerShoper.PRODUCTTYPE_CASH)
              {
                  if(productSku.getProductSkuPrice().getDirectPrice().compareTo(productSkuPrice) != 0)
                  {
                      map.put("productSkuPrice",productSku.getProductSkuPrice().getDirectPrice());
                      isChange= true;
                  }
              }
              else if(productType == DealerConstant.DealerShoper.PRODUCTTYPE_CREDIT)
              {
                  if(productSku.getProductSkuPrice().getCreditPrice().compareTo(productSkuPrice) != 0)
                  {
                      map.put("productSkuPrice",productSku.getProductSkuPrice().getCreditPrice());
                      isChange= true;
                  }
              }
              else if(productType == DealerConstant.DealerShoper.PRODUCTTYPE_SAM)
              {
                  if(productSku.getProductSkuPrice().getSamplePrice().compareTo(productSkuPrice) != 0)
                  {
                      map.put("productSkuPrice",productSku.getProductSkuPrice().getSamplePrice());
                      isChange= true;
                  }
              }
              if(productSku.getQuantity()-quantity < 0)
              {
                  map.put("quantity", productSku.getQuantity());
                  isChange = true;
              }
              if(isChange)
              {
                  dealerShoperList.add(map);
              }
          }else{
              map.put("isValid",false);
              dealerShoperList.add(map);
          }
      }
      return this.getJsonMessage(CommonConst.SUCCESS,dealerShoperList);
  }
    return this.getJsonMessage(CommonConst.FAIL);
}

com.alibaba.fastjson