RequestDispatcher不使用Filter

Question

我在某个位置有一个过滤器（/ dir / store_image /*).

当我通过RequestDispatcher重定向到它时，它无效。

但它与response.sendRedirect一起工作正常。

对于requestDispatcher，输出是 - 请求的资源不可用。

示例代码 -

String path = req.getRequestURI() ;

path = path.substring(path.lastIndexOf("/")+1, path.length());

path = "../dir/store_image/" + path;

/* Not working
  RequestDispatcher request_Dispatcher=request.getRequestDispatcher(path);
  request_Dispatcher.forward(request,response);*/

//Working

HttpServletResponse httpResponse = (HttpServletResponse) response;
httpResponse.sendRedirect(path);

过滤器映射 -

（来自StoreImageA，我转发到StoreImage）

<filter-mapping>
    <filter-name>StoreImage</filter-name>
    <url-pattern>/dir/store_image/*</url-pattern>
</filter-mapping>


<filter-mapping>
    <filter-name>StoreImageA</filter-name>
    <url-pattern>/store_image/*</url-pattern>
</filter-mapping>