<?xml version="1.0" encoding="UTF-8" ?>

<!DOCTYPE struts PUBLIC

    "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"

    "http://struts.apache.org/dtds/struts-2.3.dtd">

<struts>

    <package name="p1" namespace="/" extends="struts-default">

        <action name="m1Action" class="org.ah.s2.C1" method="m1">

            <result name="success" type="dispatcher">

                /inputMsg.jsp

            </result>

        </action>

    </package>

</struts>

package org.ah.s2;

public class Model {

    private String uname;

    private M2 m2;

    public Model(String uname, M2 m2) {

        this.uname = uname;

        this.m2 = m2;

    }

    public M2 getM2() {

        return m2;

    }

    public void setM2(M2 m2) {

        this.m2 = m2;

    }

    public String getUname() {

        return uname;

    }

    public void setUname(String uname) {

        this.uname = uname;

    }

}

package org.ah.s2;

public class M2 {

    public M2(String name2) {

        this.name2 = name2;

    }

    private String name2;

    public String getName2() {

        return name2;

    }

    public void setName2(String name2) {

        this.name2 = name2;

    }

}

package org.ah.s2;

import java.util.ArrayList;

import java.util.List;

import org.apache.struts2.ServletActionContext;

import ognl.Ognl;

import ognl.OgnlException;

import com.opensymphony.xwork2.ActionContext;

import com.opensymphony.xwork2.ActionSupport;

import com.opensymphony.xwork2.util.ValueStack;

public class C1 extends ActionSupport {

    private Model m;

    private List<Model> lstM;

    // ------------------------------------------------------------------

    public Model getM() {

        return m;

    }

    public void setM(Model m) {

        this.m = m;

    }

    public List<Model> getLstM() {

        return lstM;

    }

    public void setLstM(List<Model> lstM) {

        this.lstM = lstM;

    }

    // ------------------------------------------------------------------

    public String m1() {

        ActionContext ac = ActionContext.getContext();

        // 放入值栈外围

        ac.put("msg", "out_value");

        // 放入值栈

        ValueStack valueStack = ac.getValueStack();

        valueStack.set("msg", "vStack_value");// OK

        // 放入Application

        ac.getApplication().put("msg", "hello application");

        // 放入session

        ac.getSession().put("msg", "hello session");

        // 放入request(上面的ActionContext ac搞不定，需要ServletActionContext)

        ServletActionContext.getRequest().setAttribute("msg", "hello request");

        // 放置对象

        m = new Model("吕布", new M2("方天画戟"));

        // 放置List

        Model m1 = new Model("关羽", new M2("青龙偃月刀"));

        Model m2 = new Model("张飞", new M2("丈八蛇矛枪"));

        Model m3 = new Model("赵云", new M2("龙胆亮银枪"));

        lstM = new ArrayList<Model>();

        lstM.add(m1);

        lstM.add(m2);

        lstM.add(m3);

        return "success";

    }

}

    <s:form action="m1Action" method="post">

        <s:textfield name="msg" value="my input"></s:textfield>

        <s:submit value="测试Struts控件传值"></s:submit>

    </s:form>

    1.值栈中的值：

    <s:property value="msg" />

    <hr>

    2.值栈外围值：

    <s:property value="#msg" />

    <br> 3.

    <s:property value="#parameters.msg" />取表单提交值

    <br> 4.

    <s:property value="#application.msg" />

    <br> 5.

    <s:property value="#session.msg" />

    <br> 6.

    <s:property value="#request.msg" />

    <br> 7.

    <s:property value="#attr.msg" /> 按page > request > session > application顺序访问其属性,取page的值只能用这个<br> 8.取对象

    <s:property value="m.uname" />

    <s:property value="m.m2.name2" />

    <br> 9.取List

    <!-- 用listValue指定显示的内容 -->

    下拉列表：

    <s:select list="lstM" listValue="uname" headerValue="缺省值">

    </s:select>

    <br> 下拉列表（自定义List）：

    <s:select list="#{'0':'男','1':'女'}" label="性别" headerValue="请选择性别" />

    <br>

    <br> 循环遍历：

    <br>

    <s:iterator value="lstM" var="per" status="sta">

        <s:property value="#per.uname" />

        <s:property value="#per.m2.name2" />

        <br>

        循环的次数为：<s:property value="#sta.count" />

        <br>

        循环的索引为：<s:property value="#sta.index" />

        <br>

        是否为奇数：<s:property value="#sta.odd" />

        <s:if test="#sta.count==1">No.1</s:if>

        <s:elseif test="#sta.count==2">No.2</s:elseif>

        <s:else>No.3</s:else>

        <br />

    </s:iterator>

    <br>

    遍历set集合：(自定义的字符串不能是字符！至少加一个空格)

    <br>

    <s:set name="set" value="{'E ','ddddd','ccccc','bbbbb','aaaaa'}"></s:set>

    <s:iterator value="#set" var="o">

        <!-- ${o }<br/> -->

        <s:property value="o" />

        <br />

    </s:iterator>

    <s:debug></s:debug>