response.sendRedirect // request.getRequestDispatcher("/Result2.jsp").forward(request, response);_<% request.getrequestdispatcher("社区02.jsp?param='p-优快云博客

本文展示了一个使用GET方法的简单Servlet实现，通过接收客户端发送的请求参数，并根据参数内容进行跳转或转发到特定页面。

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/**
* 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 {
/*
  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");
  out.println(" </BODY>");
  out.println("</HTML>");
  out.flush();
  out.close();
  */

  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);
  }

}