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Message-ID: <44B38B81.7010409@x-minds.org>
Date: Tue, 11 Jul 2006 16:59:05 +0530
From: Vinu Varghese <vinu@x-minds.org>
Organization: X-minds
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To: Tomcat Users List <users@tomcat.apache.org>
Subject: Re: Getting the date/time from the client
References: <44B35878.6040405@x-minds.org>
 <009a01c6a4c0$33540be0$6500a8c0@vancouver> <44B36038.6010104@x-minds.org>
 <00de01c6a4c8$8b2acbd0$6500a8c0@vancouver> <44B36E20.6010301@x-minds.org>
 <44B37C37.7050807@mkodo.com> <44B3808C.1080403@pidster.com>
In-Reply-To: <44B3808C.1080403@pidster.com>
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but that still sets the server date - yes ?

Pid wrote:
> 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
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>>>>
>>>>
>>>>
>>>>         
>>
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>>
>>
>>     
>
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>   

-- 
........................................

Vinu Varghese
vinu@x-minds.org
www.x-minds.org


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