<s:iterator> struts2迭代器的使用

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1、前端jsp页面代码：

<s:iterator value="#request.specialityArray" status="status"  id="item">        <tr>            <td width="20%" align="center">                    <s:property value="#status.count"/>            </td>            <td width="60%" align="center">                    <s:property value="SpecialityName"/>            </td>            <td width="20%" align="center">                <a href="Speciality.action?action=del&specialityid=<s:property value="SpecialityId"/>">                    删除</a>            </td>        </tr>   </s:iterator>

2、action后端代码：

String sql ="select * from Speciality";Statement state = conn.createStatement();ResultSet rs = state.executeQuery(sql);ArrayList<Speciality> specialityArray=new ArrayList<Speciality>();        while (rs.next()) {            Speciality spec = new Speciality();            spec.setSpecialityId(rs.getInt("specialityid"));            spec.setSpecialityName(rs.getString("specialityname"));            specialityArray.add(spec);        }        @SuppressWarnings("unchecked")        Map<String, ArrayList<Speciality>> request = (Map<String, ArrayList<Speciality>>)                ActionContext.getContext().get("request");        request.put("specialityArray", specialityArray);        DBConn.closeConn(conn);

特别注意：
1、

Map<String, ArrayList<Speciality>> request = (Map<String, ArrayList<Speciality>>)                ActionContext.getContext().get("request");

这段代码是为了将map放入request范围内，在下面的代码中将map填充
2、在前端引用的<s:property value="SpecialityName"/>类中的属性，一定需要getXXXX()来获取，否则前端无法获取到value中的值

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