我有一个使用welcome-page
index.jsp的应用程序，其中<iframe></iframe>iframe的内容是一个jsf页面。如果我访问index.jsp，我会在萤火虫的第一个入口处看到一个cookie：

Set-Cookie  JSESSIONID=C615DA89B6EF73F801973EA3DCD3B226; Path=/

的页面<iframe>继承了这个jsessionid。但是：当我直接访问的页面时，<iframe/>我会在第一次请求时将jsessionId重写为所有没有cookie的URL。之后，使用cookie。很好-
如果：安全系统允许我执行url重写。

我运行jboss 4.2.2

我想实现与index.jsp相同的行为-例如，始终使用cookie并始终避免http重写。

[编辑] 感谢balusc的回答，我这样写：

public class JsessionIdAvoiderFilter implements Filter {

            public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException,
                    ServletException {
                boolean allowFilterChain = redirectToAvoidJsessionId((HttpServletRequest) req, (HttpServletResponse)res);

                         //I'm doing this because if I execute the request completely, it will perform a pretty heavy lookup operation. No need to do it twice.
                if(allowFilterChain)
                    chain.doFilter(req, res);
            }


            public static boolean redirectToAvoidJsessionId(HttpServletRequest req, HttpServletResponse res) {
                HttpSession s = req.getSession();
                if(s.isNew()) {

 //after the redirect we don't want to redirect again.
if(!(req.isRequestedSessionIdFromCookie()&&req.isRequestedSessionIdFromURL()))
                    {
                                //yeah we have request parameters actually on that request.         
                        String qs = req.getQueryString();

                        String requestURI = req.getRequestURI();
                        try {
                            res.sendRedirect(requestURI+"?"+qs);
                            return false;
                        } catch (IOException e) {
                            logger.error("Error sending redirect. " + e.getMessage());
                        }
                    }
                }
                return true;
            }
}

不要忘记将其添加到您的 web.xml

    <filter> 
    <display-name>JsessionId Filter</display-name> 
    <filter-name>jsessionIdAvoiderFilter</filter-name> 
    <filter-class>my.namespace.JsessionIdAvoiderFilter</filter-class> 
</filter> 
<filter-mapping> 
    <filter-name>jsessionIdAvoiderFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>
<filter>