com.mysql.jdbc.exceptions.MySQLIntegrityConstraintViolationException: Column 'goodsName' cannot be null

com.mysql.jdbc.exceptions.MySQLIntegrityConstraintViolationException: Column 'goodsName' cannot be null

出現這錯誤，是我封裝頁面的時候出現的錯誤。

	private void addGoods(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		  // 1.封裝頁面的數據
				FromGoods bean = WebUtils.fillFormBean(request, FromGoods.class);
				// 3.創建Goods對象,並拷貝formbean的數據
				Goods u = new Goods();
				try {
					BeanUtils.copyProperties(u, bean);
				} catch (Exception e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
				// 4.調用service層完成添加的操作
				gs.add(u);
						// 5.重新計算總頁面等等
				getAllGoods(request, response);
	}