fix bug

@@ -17,10 +17,12 @@ public class PressMySqlService {
 	private ProductMapper productMapper;
 
 	public Map<String, Object> pressProductTable(String brandIds, int size) {
+		long begin = System.currentTimeMillis();
 		List<String> brandIdList = Arrays.asList(brandIds.split(","));
 		List<Integer> skns = productMapper.selectBrandNewestSkns(brandIdList, 1, size);
 		Map<String, Object> results = new HashMap<String, Object>();
 		results.put("skns", skns);
+		results.put("cost", System.currentTimeMillis()-begin);
 		return results;
 	}