@SuppressWarnings("unchecked")
	private void readFile() {
		FileInputStream 
		    gfis = null,
		    gcfis = null;
		ObjectInputStream
		    gois = null,
		    gcois = null;
		try {
			gfis = new FileInputStream(goodsURL);
			gcfis = new FileInputStream(goodsClassURL);
			if(gfis.available() > 0) gois = new ObjectInputStream(gfis);
			if(gcfis.available() > 0) gcois = new ObjectInputStream(gcfis);
			goodsList = (ArrayList<GoodsPO>) gois.readObject();
			goodsClassList = (ArrayList<GoodsClassPO>) gcois.readObject();
			
		} catch (FileNotFoundException e) {
			System.out.println("goodsPO.out or goodsClassPO.out not found");
		} catch (IOException e) {
			e.printStackTrace();
		} catch (ClassNotFoundException e) {
			System.out.println(".out读取问题");
		}
	}