struts2 <s:select>实现下拉列表

1、页面

<s:select list="itemClasses" listKey="id" listValue="itemClassName" label="题目所属类别" headerKey="0" headerValue="请选择题目所属类别" ></s:select>

2、ItemClass.java为普通的JavaBean
属性:

private Long id;
private String itemClassName;
private String remarker;

3、对应的action

package com.dreamcms.struts.action.itemclass;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import com.dreamcms.business.itembank.ItemClassMgr;
import com.dreamcms.model.itembank.ItemClass;
import com.opensymphony.xwork2.ActionSupport;
/**
 * 获取题库类别，供<s:select/>使用
 * @author 忧里修斯
 */
public class GetAllItemClassAction extends ActionSupport {

	public List<ItemClass> itemClasses;
	public List<ItemClass> getItemClasses() {
		return itemClasses;
	}
	public void setItemClasses(List<ItemClass> itemClasses) {
		this.itemClasses = itemClasses;
	}

	@Override
	public String execute() throws Exception {

		ItemClassMgr icm = new ItemClassMgr();
		List<ItemClass> selItemClasses = new ArrayList<ItemClass>();
		selItemClasses = (List<ItemClass>)icm.getAllItemClass();
		setItemClasses(selItemClasses);
		return SUCCESS;
	}
}