SendRedirect in java servlet

結論: 直接用 sendRedirect 就好了.

Redirect

protected void doGet(HttpServletRequest req, HttpServletResponse resp){
    resp.sendRedirect("http://www.google.com");  
}

Forward

protected void doGet(HttpServletRequest req, HttpServletResponse resp) {
    RequestDispatcher dispatcher = getServletContext()
      .getRequestDispatcher("/servlet2");
    dispatcher.forward(req, resp);
}

forward() method	sendRedirect() method
The forward() method works at server side.	The sendRedirect() method works at client side.
It sends the same request and response objects to another servlet.	It always sends a new request.