struts2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

 

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