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From Pid...@pidster.com>
Subject Re: Getting the date/time from the client
Date Tue, 11 Jul 2006 10:42:20 GMT
write a filter that activates for that url, and get the time just before
you doFilter. if you need to, you can pass the date obj as an attribute

Date date = new Date();
hreq.setAttribute("thisIsTheDate", date);
chain.doFilter(hreq, hres);



Jon Wingfield wrote:
> The HTTP spec (rfc2616) says clients should only send the Date header
> with http messages with body content (POST, PUT) and even then it's
> optional.
> 
> Try adding a date string as a parameter on your GET request which your
> servlet can then parse from request.getParameter(...).
> 
> One way to do this would be to change your link to a form with a hidden
> input field for your date value. Add an onclick/onsubmit javascript
> handler to your form button which sets the value of the hidden field to
> the current date in a format that your servlet will understand.
> 
> for example:
> 
> function setDate(form) {
>   form.dateField.value = new Date().toString();
> }
> 
> 
> Example assumes a hidden form input field with name dateField.
> 
> HTH,
> 
> Jon
> 
> Vinu Varghese wrote:
>> SK,
>> That javascript prints the current client time. But I want the client
>> time with the request.
>> The scenario is :
>>
>> I have a index.jsp
>>
>> <%@ page language="java" contentType="text/html; charset=ISO-8859-1"
>>    pageEncoding="ISO-8859-1"%>
>> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
>> <html>
>> <head>
>> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
>> <title>Insert title here</title>
>> </head>
>> <body>
>> Client time : <a href="clienttime.htm"> Click</a>
>> </body>
>> </html>
>>
>> and  a servlet that can take the client time (Hoping to :-) ) which is
>> mapped to 'clienttime.htm'
>>
>>    protected void doGet(HttpServletRequest request,
>> HttpServletResponse response) throws ServletException, IOException {
>>              response.setContentType("text/plain");
>>              long time = request.getDateHeader("Date"); // Hoping to
>> get the client date.
>>              PrintWriter out = response.getWriter();
>>             out.println("Server time " + new Date());
>>              out.println("Client time (long) " + time);
>>              out.println("Client time " + new Date(time));
>>          }
>>
>>
>> Is there any way to do this (get the client time from the request) ?
>> Or Am I trying to do a dumb thing ? ;)
>>
>> Thanks & Regards
>> Vinu
>>
>>
>>
>>
>> Shinya Koizumi wrote:
>>> Vinu
>>> Yeah, you are right about it, I can't get getDateHeader working.
>>>
>>> For the solution one, I have setup like this for jsp and worked.
>>>
>>> <%@ page session="false" %>
>>> <html>
>>>    <head>
>>>    <meta http-equiv="Content-Type" content="text/html;
>>> charset=iso-8859-1">
>>>    <title><%= application.getServerInfo() %></title>
>>> </head>
>>> <body>
>>> Current Time:
>>> <%
>>> out.println("<SCRIPT LANGUAGE=JavaScript>");
>>> out.println("var currentTime = new Date();");
>>> out.println("document.write(currentTime.toLocaleString());");
>>> out.println("</SCRIPT>");
>>> out.println("</HEAD>");
>>> %>
>>> </body>
>>> </html>
>>>
>>> SK
>>> ----- Original Message ----- From: "Vinu Varghese" <vinu@x-minds.org>
>>> To: "Tomcat Users List" <users@tomcat.apache.org>
>>> Sent: Tuesday, July 11, 2006 1:24 AM
>>> Subject: Re: Getting the date/time from the client
>>>
>>>
>>>> Thanks SK,
>>>>
>>>> I tried the second solution , but request.getDateHeader("Date")
>>>> returns -1 .
>>>>
>>>> Also I didn't understand the first solution ( embed a javascript),
>>>> Can u
>>>> pls elaborate that.
>>>>
>>>> Thanks and regards
>>>> Vinu
>>>>
>>>> Shinya Koizumi wrote:
>>>>> One is to embed javascript in the output
>>>>>
>>>>> out.println("<HTML><HEAD><title>JavaScriptExample</title>");
>>>>>     out.println("<SCRIPT LANGUAGE=JavaScript>");
>>>>>     out.println("function back() {");
>>>>>     out.println("history.back(-1);");
>>>>>     out.println("}");
>>>>>     out.println("</SCRIPT>");
>>>>>     out.println("</HEAD>");
>>>>>
>>>>>
>>>>> The other solution is to get it from the request header.
>>>>>
>>>>> protected void doGet(HttpServletRequest request, HttpServletResponse
>>>>> response)
>>>>>         throws ServletException, IOException {
>>>>>     long l = request.getDateHeader("Date");
>>>>>     Date d = new Date(l);
>>>>>     System.out.println(d);
>>>>> }
>>>>>
>>>>> SK
>>>>> ----- Original Message ----- From: "Vinu Varghese" <vinu@x-minds.org>
>>>>> To: "Tomcat Users List" <users@tomcat.apache.org>
>>>>> Sent: Tuesday, July 11, 2006 12:51 AM
>>>>> Subject: Getting the date/time from the client
>>>>>
>>>>>
>>>>>> Hi All,
>>>>>>
>>>>>> I am doing a project in jsp/servlet and tomcat, which requires to
>>>>>> take
>>>>>> the client date/time (ie the time of the machine the browser is
>>>>>> running). Is there any way to accomplish this ?
>>>>>>
>>>>>> Thanks & regards
>>>>>> Vinu
>>>>>>
>>>>>>
>>>>>>
>>>>>> -- 
>>>>>> ........................................
>>>>>>
>>>>>> Vinu Varghese
>>>>>> vinu@x-minds.org
>>>>>> www.x-minds.org
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>> ---------------------------------------------------------------------
>>>>> To start a new topic, e-mail: users@tomcat.apache.org
>>>>> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
>>>>> For additional commands, e-mail: users-help@tomcat.apache.org
>>>>>
>>>>>
>>>>>
>>>>
>>>> -- 
>>>> ........................................
>>>>
>>>> Vinu Varghese
>>>> vinu@x-minds.org
>>>> www.x-minds.org
>>>>
>>>>
>>>
>>>
>>>
>>> ---------------------------------------------------------------------
>>> To start a new topic, e-mail: users@tomcat.apache.org
>>> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
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>>>
>>>
>>>
>>
> 
> 
> 
> ---------------------------------------------------------------------
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> 
> 
> 

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