title: Servlet does not get request parameter
body: <p>The servlet redirects from page1.jsp to page2.jsp like this:</p>
  
  <pre><code>String url = getServletContext().getContextPath() + "page2.jsp?command=reload";
  response.sendRedirect(url);
  </code></pre>
  
  <p>Than the filter which try to get "command" parameter can get it. But servlet does not see the parameter. 
  I also tried to do this without any filters. The result is the same.</p>
  
  <p>What is the reason?</p>