20080504 HttpRequst QueryString Headers
http://www.shengfang.org

HttpRequst.QueryString 表示请求路径的查询字符串集合 如
http://community.csdn.net/Expert/TopicView3.asp?id=5702293
中 id/5702293 成一对

HttpRequst.Headers 表示 http 请求头，具体值不一，由用户代理，如浏览器发出，请参考 http 协议规范

protected void Page_Load(object sender, EventArgs e)
    {
        int loop1, loop2;
        NameValueCollection coll = new NameValueCollection();
        coll = Request.QueryString;
        String[] arr1 = coll.AllKeys;
        for (loop1 = 0; loop1 < arr1.Length; loop1++)
        {
            Response.Write("参数:" + arr1[loop1]);
            String[] arr2 = coll.GetValues(arr1[loop1]);
            loop2 = 0;
            Response.Write("值:" + arr2[loop2]+"<br/>");
        }
    }
protected void Page_Load(object sender, EventArgs e)
    {
        int loop1, loop2;
        NameValueCollection coll;

        // Load Header collection into NameValueCollection object.
        coll = Request.Headers;

        // Put the names of all keys into a string array.
        String[] arr1 = coll.AllKeys;
        for (loop1 = 0; loop1 < arr1.Length; loop1++)
        {
            Response.Write("Key: " + arr1[loop1] + "<br/>");
            // Get all values under this key.
            String[] arr2 = coll.GetValues(loop1);
            for (loop2 = 0; loop2 < arr2.Length; loop2++)
            {
                Response.Write("Value " + loop2 + ": " + Server.HtmlEncode(arr2[loop2]) + "<br/>");
            }
        }
    }

    ShowRequestHeaders.java 
  package   hall; 
  
  import   java.io.*; 
  import   javax.servlet.*; 
  import   javax.servlet.http.*; 
  import   java.util.*; 
  
  public   class   ShowRequestHeaders   extends   HttpServlet   {  
  public   void   doGet(HttpServletRequest   request, 
  HttpServletResponse   response) 
  throws   ServletException,   IOException   {  
  response.setContentType("text/html"); 
  PrintWriter   out   =   response.getWriter(); 
  String   title   =   "显示所有请求头"; 
  out.println(ServletUtilities.headWithTitle(title)   + 
  "＜BODY   BGCOLOR=＼"#FDF5E6＼"＞＼n"   + 
  "＜H1   ALIGN=CENTER＞"   +   title   +   "＜/H1＞＼n"   + 
  "＜B＞Request   Method:   ＜/B＞"   + 
  request.getMethod()   +   "＜BR＞＼n"   + 
  "＜B＞Request   URI:   ＜/B＞"   + 
  request.getRequestURI()   +   "＜BR＞＼n"   + 
  "＜B＞Request   Protocol:   ＜/B＞"   + 
  request.getProtocol()   +   "＜BR＞＜BR＞＼n"   + 
  "＜TABLE   BORDER=1   ALIGN=CENTER＞＼n"   + 
  "＜TR   BGCOLOR=＼"#FFAD00＼"＞＼n"   + 
  "＜TH＞Header   Name＜TH＞Header   Value"); 
  Enumeration   headerNames   =   request.getHeaderNames(); 
  while(headerNames.hasMoreElements())   {  
  String   headerName   =   (String)headerNames.nextElement(); 
  out.println("＜TR＞＜TD＞"   +   headerName); 
  out.println("   ＜TD＞"   +   request.getHeader(headerName)); 
  } 
  out.println("＜/TABLE＞＼n＜/BODY＞＜/HTML＞"); 
  } 
  
  public   void   doPost(HttpServletRequest   request, 
  HttpServletResponse   response) 
  throws   ServletException,   IOException   {  
  doGet(request,   response); 
  } 
  }    

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