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From Vinu Varghese <v...@x-minds.org>
Subject Re: Getting the date/time from the client
Date Tue, 11 Jul 2006 12:04:47 GMT
Thanks Pid,

 I think that is a good idea
  Let me try

- Regards
Vinu

Pid wrote:
> you can get a Locale from the request, and adjust the time accordingly.
>
> Vinu Varghese wrote:
>   
>> 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
>>>>>> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
>>>>>> For additional commands, e-mail: users-help@tomcat.apache.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
>>>>
>>>>
>>>>
>>>>     
>>>>         
>>> ---------------------------------------------------------------------
>>> To start a new topic, e-mail: users@tomcat.apache.org
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>>>
>>>
>>>
>>>   
>>>       
>
> ---------------------------------------------------------------------
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> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
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>
>
>
>   

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

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


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