<script language=JavaScript>

    self.opener.location.reload();

</script>

<SPAN style="FONT-SIZE: 18px; BACKGROUND-COLOR: #ffffff">
<SPAN style="FONT-FAMILY: 'Microsoft YaHei'; COLOR: #3333ff">
<STRONG>
<%String rec = request.getHeader("REFERER");%>  
    <input type="button" onclick="javascript:window.location='<%=ref%>'">  
</STRONG>
</SPAN>
</SPAN> 
<%String rec = request.getHeader("REFERER");%>
    <input type="button" onclick="javascript:window.location='<%=ref%>'">

<%'獲取上一頁的地址
 address = request.ServerVariables("HTTP_REFERER")
%>
<!--window.location有返回相對頁面并且刷新的作用-->
<a href="javascript:window.location.href='<%=address%>'" style="cursor:hand">返回</a>

<SPAN style="FONT-SIZE: 18px; BACKGROUND-COLOR: #ffffff"><SPAN style="FONT-FAMILY: 'Microsoft YaHei'; COLOR: #3333ff"><STRONG>.在servlet中  
    request.getRequestDispatcher(request.getHeader("referer")).forward(request,response);  
    或者  
    request.getRequestURL();  

</STRONG></SPAN></SPAN>