CShop Project : 进行单个商品信息的查询

public Goods getById(int id) throws SQLException {
QueryRunner r = new QueryRunner(DBUtil.getDataSource());
String sql = "select g.id,g.name,g.cover,g.image1,g.image2,g.price,g.intro,g.stock,t.id typeid,t.name typename from goods g,type t where g.id = ? and g.type_id=t.id";
return r.query(sql, new BeanHandler<Goods>(Goods.class),id);
}

public static void main(String[] args) throws SQLException {
Goods g = new GoodsDao().getById(3);
System.out.println(g);
}

// Output

Goods [id=3, name=留恋之恋, cover=/picture/3-1.jpg, image1=/picture/3-2.jpg, image2=/picture/3-3.jpg, price=229.0, intro=主口味:榴莲奶油味(原味蛋糕胚+榴莲酱+乳脂奶油)主要原料：新西兰乳脂奶油，古巴朗姆酒，韩国幼砂糖，鲜草莓。 甜度： 三星（满五星） 最佳食用温度：5-7摄氏度, stock=10, type=com.Jasper2003.model.Type@2752f6e2]