Re: Show Last Modified Date in JSP

From:
 SadRed <cardinal_ring@yahoo.co.jp>
Newsgroups:
comp.lang.java.programmer
Date:
Sun, 22 Jul 2007 18:50:30 -0700
Message-ID:
<1185155430.418373.250870@x35g2000prf.googlegroups.com>
On Jul 23, 9:05 am, "tes...@hotmail.com" <tes...@hotmail.com> wrote:

I would like to show the Last Modified Date of a JSP that uses Tomcat
container.
I can do it this way using Java in JSP:
<%@ page import="java.io.*, java.text.*, java.util.*" %> Last
Modified:
<%
String jspPath =
getServletContext().getRealPath(request.getServletPath());
File jspFile = new File(jspPath);
Date lastModified = new Date(jspFile.lastModified());
SimpleDateFormat fmt = new SimpleDateFormat("EEEE, MMMM dd, yyyy, h:mm
a(zz)");
out.println(lastModified);
%>

But I would rather take the Java out of the JSP and use Java Bean to
show the last modified date.
My below attempt in the Bean class gives me errors with request object
and I also need help in getting it to work. Please advise.

package data;
import java.io.*;
import java.text.*;
import java.util.*;

public class DateBean
{
private String mydate = "";

public DateBean()
    {
    }

  public String fetchDate(String mydate)
  {
   String jspPath =
getServletContext().getRealPath(request.getServletPath());
   File jspFile = new File(jspPath);
   Date lastModified = new Date(jspFile.lastModified());
   SimpleDateFormat fmt = new SimpleDateFormat("EEEE, MMMM dd, yyyy,
h:mm a(zz)");
   return fmt.format(lastModified);
  }

    public String getMydate()
    {
        return mydate;
    }

    public void setMydate(String mydate)
    {
        fetchDate(mydate);
        this.mydate = mydate;
    }

}


Since you call Servlet methods and access request object, your
DateBean class should be an HttpServlet class. A stand alone custom
Java class can't access them.If you insist on using a plain Java
class, you should get the JSP file path using more generic means, like
a String literal path string.

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