不同条件查询-mysql 根据不同的条件查询出想要的结果，以List或Bean等形式返回。在线等，谢谢啦！！
mysql不同条件查询bean返回list、bean
<code> 有一张mySql表：tb_products,表结构如下图：</code>
<code> 如何根据条件查询出结果集！条件如下图：</code>
上图中查询条件可能有的为空！!
Jvava 后台代码：用这种工具类：QueryRunner qr = new QueryRunner(DataSourceUtils.getDataSource());
如何继续写呢？？以List或Bean等形式返回。
<code></code>
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