struts 2 中 s:select 标签的使用。

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 

http://blog.csdn.net/moliqin/archive/2009/01/11/3753570.aspx 

转自http://salute.iteye.com/blog/783066