转载：struts2中s:select标签的使用

转载于：http://blog.csdn.net/moliqin/article/details/3753570/
1.第一个例子：

<s:select list="{'aa','bb','cc'}" theme="simple" headerKey="00" headerValue="00"></s:select>

2.第二个例子：

<s:select list="#{1:'aa',2:'bb',3:'cc'}"  label="abc" listKey="key" listValue="value"  headerKey="0" headerValue="aabb">

3.第三个例子：

<%
Java.util.HashMap map = new java.util.LinkedHashMap();

map.put(1,"aaa");

map.put(2,"bbb");

map.put(3,"ccc");

request.setAttribute("map",map);

request.setAttribute("aa","2");

%>

<s:select list="#request.map"  label="abc" listKey="key" listValue="value"

 value="#request.aa"  headerKey="0" headerValue="aabb"></

s:select

>

headerKey headerValue 为设置缺省值

摘抄自 http://www.cnblogs.com/modou/articles/1326683.html
4.第四个例子

public class Program implements Serializable {

    /**    serialVersionUID */

    private static final long serialVersionUID = 1L;

    private int programid;

    private String programName;

    public int getProgramid() {

        return programid;

    }

    public void setProgramid(int programid) {

        this.programid = programid;

    }

        public String getProgramName() {

        return programName;

    }

    public void setProgramName(String programName) {

        this.programName = programName;

    }

}

在 xxx extends  extends ActionSupport {

    private  List<Program> programs ;

       public List<Program> getPrograms() {

        return programs;

    }

    public void setPrograms(List<Program> programs) {

            this.programs = programs;

    }

}

在jsp页面

      <s:select list="programs"  listValue="programName" listKey="programid"  name="program" id="program"

             headerKey="0l" headerValue="    "   value="bean.programid"

             ></s:select> 

红色部分为在action里面的list,黄色为<option value="xxx">value</option>对应bean里面的字段programName

绿色为<option value="xxx",对应bean里面的字段programid

紫色为设定select被选中的值,s:select 会自动在　bean选中　key对应的值