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String url="http://www.baidu.com";
   ActionForward gotourl = new ActionForward(url);
   gotourl.setPath(url);
   gotourl.setRedirect(true);
   return gotourl;
  1.RequestDispatcher.forward()
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¡¡¡¡µ«forward()ÎÞ·¨Öض¨ÏòÖÁÓÐframeµÄjspÎļþ,¿ÉÒÔÖØ¶¨ÏòÖÁÓÐframeµÄhtmlÎļþ,ͬʱforward()ÎÞ·¨ÔÚºóÃæ´ø²ÎÊý´«µÝ,±ÈÈçservlet?name=frank,ÕâÑù²»ÐÐ,¿ÉÒÔ³ÌÐòÄÚͨ¹ýresponse.setAttribute("name",name)À´´«ÖÁÏÂÒ»¸öÒ³Ãæ.
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¡¡¡¡Àý:ÔÚservletÖнøÐÐÖØ¶¨Ïò
 
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public void doPost(HttpServletRequest request,HttpServletResponse response) throws ServletException,IOException   
{   
¡¡ response.setContentType("text/html; charset=gb2312");   
¡¡ ServletContext sc = getServletContext();   
¡¡ RequestDispatcher rd = null;   
¡¡ rd = sc.getRequestDispatcher("/index.jsp"); //¶¨ÏòµÄÒ³Ãæ   
¡¡ rd.forward(request, response);   
}  
public void doPost(HttpServletRequest request,HttpServletResponse response) throws ServletException,IOException
{
¡¡ response.setContentType("text/html; charset=gb2312");
¡¡ ServletContext sc = getServletContext();
¡¡ RequestDispatcher rd = null;
¡¡ rd = sc.getRequestDispatcher("/index.jsp"); //¶¨ÏòµÄÒ³Ãæ
¡¡ rd.forward(request, response);
}
 
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       2.response.sendRedirect()
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