我有一个过滤器，它处理请求以记录它们，所以我可以跟踪哪个会话在什么时间用什么请求参数访问了一个页面。效果很好...从 jsp 发布到 jsp，或直接调用 jsp。但是，当将表单发布到将请求转发到新 jsp 的 servlet 时，我无法看到请求被转发到了哪个 jsp。
例如，假设我有一个登录页面，它发布到 LoginServlet，然后将请求转发到 index.jsp 或 index1.jsp。如何从请求中确定 LoginServlet 是返回 index.jsp 还是 index1.jsp？
这是在使用 2.3 servlet 规范的 java 1.5 环境中。
public class PageLogFilter implements Filter {
FilterConfig filterConfig = null;
public void init(FilterConfig filterConfig) throws ServletException {
this.filterConfig = filterConfig;
}
public void destroy() {
this.filterConfig = null;
}
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
throws IOException, ServletException {
try {
if (request instanceof HttpServletRequest) {
HttpServletRequest req = (HttpServletRequest) request;
HttpSession session = req.getSession(false);
//For non-forwards, I can call req.getRequestURI() to determine which
//page was returned. For forwards, it returns me the URI of the
//servlet which processed the post. I'd like to also get the URI
//of the jsp to which the request was forwarded by the servlet
}
}
} catch (Exception e) {
System.out.println("-- ERROR IN PageLogFilter: " + e.getLocalizedMessage());
}
chain.doFilter(request, response);
}
}