java.sql.SQLException: No value specified for parameter 12

String sql="update  dishes set foodName = ? , foodPrice=? , 
foodWeight=? ,cost_performance=? , address=? ,date=? , firstCategoty=?,
 secondCategory=? , foods=? , photo=? , other =?  where id=?";

	pstmt = conn.prepareStatement(sql);
				pstmt.setString(1, stu.getFoodname());
				pstmt.setFloat(2, stu.getPrice());
				pstmt.setFloat(3, stu.getWeight());
				pstmt.setInt(4, stu.getCost_performance());
				pstmt.setString(5, stu.getAddress());
				pstmt.setString(6, stu.getDate());
				pstmt.setString(7, stu.getFirstCategory());
				pstmt.setString(8, stu.getSecondCategory());
				pstmt.setString(9, stu.getFoods());
				pstmt.setString(10, stu.getPhoto());
				pstmt.setString(11, stu.getOther());
				pstmt.executeUpdate();

应该加上

pstmt.setInt(12, stu.getId());

即

	            pstmt = conn.prepareStatement(sql);
				pstmt.setString(1, stu.getFoodname());
				pstmt.setFloat(2, stu.getPrice());
				pstmt.setFloat(3, stu.getWeight());
				pstmt.setInt(4, stu.getCost_performance());
				pstmt.setString(5, stu.getAddress());
				pstmt.setString(6, stu.getDate());
				pstmt.setString(7, stu.getFirstCategory());
				pstmt.setString(8, stu.getSecondCategory());
				pstmt.setString(9, stu.getFoods());
				pstmt.setString(10, stu.getPhoto());
				pstmt.setString(11, stu.getOther());
				pstmt.setInt(12, stu.getId());
				pstmt.executeUpdate();

第12个?没有赋值,也就是id没有指定