试图获得公司名单，select但这给了我一个错误。

type Exception report

message tag 'select', field 'list', name 'workOrder.company': The requested list key          
'listAllCompanys' could not be resolved as a collection/array/map/enumeration/iterator
   type.   Example: people or people.{name} - [unknown location]

description
   The server encountered an internal error that prevented it from fulfilling this request.

例外：

org.apache.jasper.JasperException: tag 'select', field 'list', name 'workOrder.company': The requested list key 'listAllCompanys' could not be resolved as a collection/array/map/enumeration/iterator type. Example: people or people.{name} - [unknown location]
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:585)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:470)

我的workOrder.jsp文件包含：

<s:select list="listAllCompanys"  listValue="companyName" name="workOrder.company"></s:select>

当我要添加新的工作订单时，select中应该有可用的公司列表。

更新：

这是我的listAllCompanies()方法

public List<Company> getCompanyList() {
    return companyList;
}

//////////////////////////////////////////
/////////////////////////////////////////

public List<Company> getListAllCompanys() {
    return listAllCompanys;
}

private List<Company> listAllCompanys;

public String listAllCompanys() throws Exception
{
    CompanyDaoHibernate dao = new CompanyDaoHibernate();
    listAllCompanys = dao.getListOfCompanys();

    return SUCCESS;

}

CompanyDAOHibernate：

public List<Company> getListOfCompanys()
{

    SessionFactory sf = HibernateUtil.getSessionFactory();
    Session session =  sf.openSession();

     @SuppressWarnings("unchecked")
    List<Company>  returnList =  (List<Company>)session.createCriteria(Company.class).list();
    session.close();
    System.out.println("Printing companies... "+returnList);
    return returnList;

}