struts2中表现层的数据展现（bean,list,iterator,format,etc）

假定在Action中通过get/set了绑定了一个ModelAndView 的bean，用于渲染页面的数据。在实际的开发中，这个bean可能包含了各种页面需要的信息，因此会相当复杂。

设定：bean mv

[java]
public class CompanyMV {
    private Company company;
    private List<City> cities;
    private List<Currency> currencies;
    private List<Moneystyle> moneystyles;
    private List<Customer> customers;
       //.......

        private File logofile;
    private String logofileContentType;
    private String logofileFileName;
       //..get/set

}

1，遍历(iterator)

1.1）包含html

[html]
<select name="mv.company.cityid">
    <s:if test="mv.cities.size>0">
        <s:set name="cities" value="mv.cities" scope="session"/>
    </s:if>
    <s:iterator value="#session.cities" var="city">
        <option value="${city.cityid}"
            <s:if test="#city.cityid == mv.company.cityid "> SELECTED </s:if> >
            <s:property value="name" />   <s:property value="state"/>
        </option>
    </s:iterator>
</select>

Note: 此处通过<s:set>设置cities的值到session, 为了防止表单验证之后的list值丢失。如果不通过<s:set>也可使用在form中隐含变量的方式，eg
[html]
<s:iterator value="mv.qualitys" status="stat" var="item">
            <input type="hidden" name="mv.qualitys[<s:property value="#stat.index" />].id.qualityindex" value="<s:property value="#item.id.qualityindex" />" />
            <input type="hidden" name="mv.qualitys[<s:property value="#stat.index" />].qualityvalue" value="<s:property value="#item.qualityvalue" />" />
        </s:iterator>

此处的id是qualitys的复合primary key. (通过hibernate生成)

固定的list

[html]
<select id="mv.company.payterms" name="mv.company.payterms">
   <option value="On Due Date" <s:if test="\"On Due Date\" == mv.company.payterms"> SELECTED </s:if> ><s:text name="comp.locmain.compform.slct.ondate"/></option>
   <option value="Due on the 1st" <s:if test="\"Due on the 1st\" == mv.company.payterms"> SELECTED </s:if> ><s:text name="comp.locmain.compform.slct.onfir"/></option>
   <option value="Due on the 5th" <s:if test="\"Due on the 5th\" == mv.company.payterms"> SELECTED </s:if> ><s:text name="comp.locmain.compform.slct.onfif"/></option>
   <option value="Net 15" <s:if test="\"Net 15\" == mv.company.payterms"> SELECTED </s:if> ><s:text name="comp.locmain.compform.slct.netfit"/></option>
   <option value="Net 30" <s:if test="\"Net 30\" == mv.company.payterms"> SELECTED </s:if> ><s:text name="comp.locmain.compform.slct.netthi"/></option>
</select>

1.2）利用tag

[php]
<s:select
    name="mv.locid"
    list="mv.floors"
    listKey="locid"
    listValue="shortdescription" />

1.3）包含for循环的java代码

[html]
<select name="curi_servicecutoff">
                <%
                    for (int current = 16; current < 29; current++) {
                        request.setAttribute("current", current);
                %>
                    <option value="${current}" <s:if test="#request.current == curi_servicecutoff"> SELECTED </s:if> > <s:property value="#request.current" /> </option>
                <%
                    }
                %>
</select>

2，格式化(format)

2.1）数字

[html] view plaincopy
<input type="text" size="20" maxlength="5"
    name="mv.qualitys[<s:property value="#stat.index" />].qualityvalue"
    value="<s:text name="global.format.number.nopositionif"><s:param name="value" value="#item.qualityvalue" /></s:text>"
     />

Note：global.format.number.nopositionif在多语言资源文件中定义，eg
[html] view plaincopy
global.format.number.noposition={0,number,##########}
global.format.number.nopositionif={0,number,##########.##}
global.format.number.2position={0,number,##########.00}
global.format.date.normal={0,date,yyyy-MM-dd}

3，集合（List，Array，Set）的显示

直接看代码，仔细阅读，不解析

[html]
<s:iterator status="stat" value="mv.suites" var="item">
            <tr>
        <td>
          <input type="text" size="7" maxlength="7" name="mv.suites[<s:property value="#stat.index" />].officeid" value="<s:property value="#item.off

补充：软件开发 , Java ,