All business logic should be in classes, and if you absolutely had to have code in your JSP page, you would wrap it up in a custom tag.

所有的商业逻辑都应该在类中，如果你确实需要在你的JSP页面中包含代码，你应该用自定义标签来包装它。

youdao

For this example, in which the database query only returns the rows of a single table, you might just write a small PHP function to wrap each column in an XML tag.

在本例中，数据库查询只返回单个表的行，您也许要编写一个php小函数对XML标记中的每一列进行打包。

youdao

You can wrap that call with the tag to make it easier to digest the information.

您可以用标记约束该调用，使得按格式显示信息更为容易。

youdao