response.sendRedirect("/"); disp.include(request, response);

来源：互联网发布：淘宝店铺如何上图编辑：程序博客网时间：2024/06/06 06:30

<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
request.setAttribute("hellowhat","helloWorld!");
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
    <base href="<%=basePath%>">

    <title>My JSP 'Result3.jsp' starting page</title>

<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">

</head>

<body>
Result3. <br>
</body>
</html>

/**
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
   throws ServletException, IOException {
  String what=null;
  if(request.getParameter("what") != null){
   what=request.getParameter("what");
  }
  if(what.startsWith("re"))
  {
         response.sendRedirect("http://www.baidu.com");
  }
  else if(what.startsWith("dis"))
  {
   request.getRequestDispatcher("/Result2.jsp").forward(request, response);
  }
  else if(what.startsWith("inc"))
  {
   RequestDispatcher disp=request.getRequestDispatcher("/Result3.jsp");
   //forward(request, response);
   disp.include(request, response);//request.setAttribute("hellowhat","helloWorld!");
   response.setContentType("text/html");
   PrintWriter out = response.getWriter();
   out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
   out.println("<HTML>");
   out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>");
   out.println(" <BODY>");
   out.print("    This is ");
   out.print(this.getClass());
   out.println(", using the GET method<hr>");
   out.print(request.getAttribute("hellowhat"));
   out.println(" </BODY>");
   out.println("</HTML>");
   out.flush();
   out.close();

  }
  else
   response.sendRedirect("/");

}

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