struts2升级为2.3.15后出现的问题

STRUTS2.1.6升级为STRUTS2.3.15后

JSP源码：<s:form action="company.do?action=registerCompany" method="post" theme="simple" focus="com_code" onsubmit="return checkSubmit();">
<div class="listText">
升级前生成的HTML：<form id="company" onsubmit="return checkSubmit();" action="company.do?action=registerCompany" method="post" focus="com_code">
<div class="listText">
升级后生成的HTML：<form id="company" name="company" onsubmit="return checkSubmit();" action="company.do" method="post" focus="com_code">
<div class="listText">


其中action由action="company.do?action=registerCompany"  变为了action="company.do" ，造成action参数丢失，请大家帮忙解决下