想要实现界面的一个小功能，下拉框读取数据库信息，显示在街面上，点击所选中的值，存储到数据库中。

下面看下界面效果：

首先介绍下界面jsp代码的实现：

<span style="font-family:KaiTi_GB2312;font-size:18px;">			<div class="formitem">
				<div class="f_label">
					<span class="red">*</span>用户名称:
				</div>
				<div class="f_item"></span>

<span style="font-family:KaiTi_GB2312;font-size:18px;">                                <!--这里是将从数据库中读取到的数据，显示到界面上--></span>

<span style="font-family:KaiTi_GB2312;font-size:18px;">					<input type="text" id="realname" name="realname" /> 
					<input type="hidden"name="allotuuid" id="allotuuid" />  
					<input type="hidden" id="userid" name="userid" />
				</div>
			</div></span>

javascrip实现

<span style="font-family:KaiTi_GB2312;font-size:18px;">	$(function() {	
		createSelect('realname', {
		valueFieldID:"userid",//获取隐藏域id
		textField: 'realname',//界面文本框显示的值
		selectBoxHeight: 200,
		valueField:'userid',url:'${path}/AssetQueryUsername/queryRealname.json',checkbox:false
		});</span>

Action层

<span style="font-family:KaiTi_GB2312;font-size:18px;">/****
 * 查询用户姓名
 * 
 * @author 
 * 
 */
@Controller
@RequestMapping(value = "/AssetQueryUsername")
public class AssetQueryUsernameAction extends BaseAction {
	@Autowired
	private AssetQueryUsernameService assetQueryUsernameService;

	/***
	 * 查询资产发放人员名称
	 */
	@RequestMapping(value = "/queryRealname.json", method = {
			RequestMethod.GET, RequestMethod.POST })
	@ResponseBody
	public Object queryRealname(SnUser snUser, HttpServletRequest request) {
		List data = (List) assetQueryUsernameService.queryRealname(snUser,
				request);
		return data;
	}
}</span>

Service层

<span style="font-family:KaiTi_GB2312;font-size:18px;">@Service
public class AssetQueryUsernameService extends BaseService<SnUser, String> {

	/***
	 * 查询资产发放人员名称
	 * 
	 * @param realname
	 * @param userid 
	 * @param request
	 * @return
	 */
	public List queryRealname(SnUser snUser,
			HttpServletRequest request) {
		String hql = " from SnUser where userlevel='0'";
		// 查询用户对象
		List<SnUser> listUser = this.listByHql(hql);
		// 返回list集合
		return listUser;
	}
}
</span>