Getting servlet: request line data acquisition request

1  / * 
2  * Demo Data Request object acquisition request line
 . 3   * / 
. 4 @WebServlet ( "/ Test" )
 . 5  public  class RequestDemo1 the extends the HttpServlet {
 . 6      protected  void the doPost (the HttpServletRequest Request, the HttpServletResponse Response) throws ServletException, IOException {
 . 7  
. 8      }
 . 9  
10      protected  void the doGet (the HttpServletRequest request, the HttpServletResponse Response) throws ServletException, IOException {
 . 11          // an acquisition request line
 12          //1. Get request method: the GET 
13 is          String Method = request.getMethod ();
 14          System.out.println (Method);
 15          // 2 (*) Gets the virtual directory:. / Request 
16          String the contextPath = request.getContextPath () ;
 . 17          System.out.println (the contextPath);
 18 is          // 3. Get Servlet path: / Demo 
. 19          String servletPath = request.getServletPath ();
 20 is          System.out.println (servletPath);
 21 is          // 4. Get get way request parameters: name = zhangshan 
22 is          String the queryString = request.getQueryString ();
 23 is         System.out.println(queryString);
24         //5.（*）获取请求URI：/request/demo
25             //* String getRequestURI（）： /request/demo
26         String requestURI = request.getRequestURI();
27         System.out.println(requestURI);
28         //* StringBuffer getRequestURI（）：http：//localhost/request/demo
29         StringBuffer requestURL = request.getRequestURL();
30         System.out.println(requestURL);
31         //6.获取协议及版本：HTTP/1.1
32         String protocol = request.getProtocol();
33         System.out.println (Protocol);
 34 is          // 7. The acquired IP address of the client:
 35              // * getRemoteAddr String () 
36          String = remoteUser as request.getRemoteUser ();
 37 [          System.out.println (remoteUser);
 38 is      }
 39 }