request对象

 1   <body>
 2     <%
 3         //获取参数值
 4         out.println(request.getParameter("aaa") + "<br/>");
 5         
 6         out.println("-----------------------------------------------" + "<br/>");
 7         //获取请求头的名字
 8         Enumeration<String> h = request.getHeaderNames();
 9         out.println(h);
10         //获取请求头对应的值
11         while(h.hasMoreElements()){
12             String hh = h.nextElement();
13             out.println(request.getHeader(hh) + "<br/>");
14         }
15         
16         out.println("-----------------------------------------------" + "<br/>");
17         request.setCharacterEncoding("GBK");
18         out.println(request.getParameter("aaa") + "<br/>");
19         
20         out.println("-----------------------------------------------" + "<br/>");
21         //获取请求头内容
22         String s = request.getQueryString();
23         out.println(s + "<br/>");
24         //解码
25         String ss = URLDecoder.decode(s, "utf-8");
26         out.println(ss + "<br/>");
27         
28         //转发
29         //request.getRequestDispatcher("error.jsp").forward(request, response);
30         //插入页面
31         request.getRequestDispatcher("error.jsp").include(request, response);
32      %>
33   </body>