动态获取值的问题

public String getClassify(){
        HttpServletRequest request = ServletActionContext.getRequest();
        HttpSession session = request.getSession();
        Users user = (Users) session.getAttribute("LOGIN_USER");
        
        this.eCustomers = ecustomerService.getCustomers(user.getUserid());
        for(int i = 0;i<eCustomers.size();i++){
            model2 = userService.getUsers(eCustomers.get(i).getCustomerid());
            users.add(i, model2);
        }
        Orderclassify tmpbean = classifyService.getClassify();
        BeanUtils.copyProperties(tmpbean, model);
        return SUCCESS;
    }

<div style="float: left; font-weight: bold">下属客户：</div>
                                <div id="fudd">
                                    <s:select   list="users" listKey="name" listValue="name" name="name" headerKey="0" headerValue="--请选择--" />
                                </div>
<div style=" padding-left:57px">
                                    <div class="input"
                                        style="width:200px; line-height:18px; float:left">
                                        手机：<input type="text" name="telephone" id="telephone" value=""
                                            style="width:150px" />
                                    </div>
                                    <font
                                        style="display:block; color:#FF0000; float:left; padding-top:10px; padding-left:5px">*
                                        必填</font>
                                    <div style="clear:both"></div>
                                </div>

 我的JSP页面有一个用户下拉列表是动态获取到的，我怎么在页面选择用户后，在一个输入手机号码的输入框中自动生成该用户的手机号码