在struts2中从数据库填充选择列表
问题描述：
我是 Struts2 的新手，并需要帮助来填充 struts2 中的选择列表.有一个简单的注册表单，其中需要从数据库中填写选择列表，比如用户名列表.我使用以下格式:
I am new to Struts2, and need assistance to populate select list in struts2. Have simple registration form in which need to fill select list from database say user name list. I use below format :
<s:select name="username" label="Username" headerKey="-1" headerValue="Select Search Engines" list="%{#{'value':'front','value1':'front1'}}" theme="simple" onchange="getData(this.value)"/>
但是如何从数据库中填充呢?
But how to fill it from database?
答
您将从数据库中获得满足某些条件的对象列表.
From the database you would get a list of objects that satisfy some criteria.
List<Engine> engines = enginDAO.getEngines();
//getter and setter here
现在您必须将 engines 填充到列表中.
Now you have to populate engines to the list.
<s:select name="username" label="Username" headerKey="-1" headerValue="Select Search Engines" list="%{engines}" listKey="id" listValue="name" theme="simple" onchange="getData(this.value)"/>