Jsp中解決session過期跳轉到登陸頁面并跳出iframe框架的方法

2020-07-27 21:36:46

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來源：轉載

供稿：網友

當session過期后可以用過濾器來設置重定向頁面

復制代碼代碼如下:

public class ActionFilter extends HttpServlet implements Filter {
private FilterConfig filterConfig;
public void init(FilterConfig config) {
this.filterConfig = config;
}
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws ServletException, IOException {
HttpServletRequest req = (HttpServletRequest) servletRequest;
servletRequest.setCharacterEncoding(“UTF-8″);
HttpServletResponse res = (HttpServletResponse) servletResponse;
String url = req.getRequestURI();
SysUserVOImpl user = (SysUserVOImpl) req.getSession().getAttribute(“SysUser”);
if (null == user) {
if (!COMMON.isEmpty(url) && (url.endsWith(“newestlogin.jsp”) || url.endsWith(“UserLoginAction.jsp”) || url.endsWith(“login.jsp”) || url.endsWith(“loginAction.do”))) {
filterChain.doFilter(servletRequest, servletResponse);
} else {
req.getRequestDispatcher(“/newestlogin.jsp”).forward(req, res);
}
} else {
filterChain.doFilter(servletRequest, servletResponse);
}
}

但是這樣不能不能跳出iframe等框架。
可以用javaScript解決
在你想控制跳轉的頁面，比如login.jsp中的<head>與</head>之間加入以下代碼：

復制代碼代碼如下:

<script language=”JavaScript”> 
if (window != top) 
top.location.href = location.href; 
</script>

JS刷新框架的腳本語句

復制代碼代碼如下:

//如何刷新包含該框架的頁面用   
<script language=JavaScript>
   parent.location.reload();
</script>  
//子窗口刷新父窗口
<script language=JavaScript>
    self.opener.location.reload();
</script>
(　或　<a href="javascript:opener.location.reload()">刷新</a>   )
//如何刷新另一個框架的頁面用   
<script language=JavaScript>
   parent.另一FrameID.location.reload();
</script>
如果想關閉窗口時刷新或者想開窗時刷新的話，在<body>中調用以下語句即可。
<body onload="opener.location.reload()"> 開窗時刷新
<body onUnload="opener.location.reload()"> 關閉時刷新
<script language="javascript">
window.opener.document.location.reload()
</script>