Solved

Velocity Templating question

Posted on 2002-06-26
7
388 Views
Last Modified: 2013-11-24
Hello,

Im trying to get to know the velocity templating engine.  Ive installed velocity, and i have working examples.  However, im trying to configure my VelocityServlet (child of..) to use templates from my template directory, but its not doing this.. i have the relative path to my properties file in my web.xml , and my properties file in turn has the entry :

file.resource.loader.path = /template

The templates, (weirdly) are being found.. but not where i expect them to be - they are in a completely seperate web application.  Its almost as though there is a general properties file over-riding the new one which i secify in loadConfiguration ();

The path to the props file is being read from the web.xml ok, and the path to the template directory is also reported in loadConfiguration as being correct..

any help appreciated..


package com.mehdi.cms;


import java.io.IOException;
import java.io.FileNotFoundException;

import java.util.Properties;
import java.util.Vector;

import javax.servlet.ServletConfig;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.velocity.Template;
import org.apache.velocity.context.Context;
import org.apache.velocity.servlet.VelocityServlet;
import org.apache.velocity.app.Velocity;
import org.apache.velocity.exception.ResourceNotFoundException;
import org.apache.velocity.exception.ParseErrorException;

import java.io.*;
import java.util.*;


public class Test extends VelocityServlet
{

    protected Properties loadConfiguration(ServletConfig config )
        throws IOException, FileNotFoundException
    {

        String propsFile = config.getInitParameter(INIT_PROPS_KEY);
        if ( propsFile != null )
        {
            String realPath = getServletContext().getRealPath(propsFile);

            if ( realPath != null )
            {
                propsFile = realPath;
            }
        }

       Properties p = new Properties();
       p.load( new FileInputStream(propsFile) );
       String path = p.getProperty("file.resource.loader.path");

       if (path != null)
       {
           path = getServletContext().getRealPath( path );
           p.setProperty( "file.resource.loader.path", path );
       }

       System.out.println(">>" + p.getProperty("file.resource.loader.path"));//THIS IS CORRECT !

       path = p.getProperty("runtime.log");

       if (path != null)
       {
           path = getServletContext().getRealPath( path );
           p.setProperty("runtime.log", path );
       }

       return p;
    }

    public Template handleRequest( HttpServletRequest request,
     HttpServletResponse response, Context ctx )
    {
        String p1 = "doo";
        String p2 = "daa";

        Vector personList = new Vector();
        personList.addElement( p1 );
        personList.addElement( p2 );

        ctx.put("theList", personList );

        Template outty = null;

        try
        {
            outty =  getTemplate("mehdi.vm");
        }
        catch( ParseErrorException pee )
        {
            System.out.println("SampleServlet : parse error for template " + pee);
        }
        catch( ResourceNotFoundException rnfe )
        {
            System.out.println("SampleServlet : template not found " + rnfe);
        }
        catch( Exception e )
        {
            System.out.println("Error " + e);
        }
        return outty;
    }
}
0
Comment
Question by:mehdi
  • 3
  • 3
7 Comments
 
LVL 92

Accepted Solution

by:
objects earned 50 total points
ID: 7112219
I'd recomend using the class loader to access your properties files instead of specifying location on disk.
Either by using ResourceBundle, ClassLoader.getSystemResourceAsStream, or Class.getResourceAsStream.
0
 
LVL 1

Author Comment

by:mehdi
ID: 7122174
Ok Objects,

Thanks for the suggestion, here is what i have now in my loadConfig.  I have put velocity.properties in my classpath, and it is being picked up fine.. still no joy though.  Still the templates are not being read from where i want them to be read.

Thanks,

Mehdi


    protected Properties loadConfiguration(ServletConfig config )
        throws IOException, FileNotFoundException
    {

       Properties p = new Properties();
       p.load(ClassLoader.getSystemResourceAsStream("velocity.properties"));
       System.out.print("WE ARE USING : " + p.getProperty(Velocity.FILE_RESOURCE_LOADER_PATH));
       return p;
    }

0
 
LVL 1

Author Comment

by:mehdi
ID: 7122183
.. needless to say of course that the following line is in my velocity.properties :

file.resource.loader.path=D:\\webcontainer\\mehdi_cms\\templates

regards,

Mehdi
0
DevOps Toolchain Recommendations

Read this Gartner Research Note and discover how your IT organization can automate and optimize DevOps processes using a toolchain architecture.

 
LVL 92

Expert Comment

by:objects
ID: 7123344
What directory is the properties file that is being loaded in?
ANd what is the base directory of your webapp?
0
 
LVL 1

Author Comment

by:mehdi
ID: 7124122
velocity.properties is in :

d:\classes\velocity.properties

contains :
file.resource.loader.path=D:\\webcontainer\\mehdi_cms\\templates

and my webapp is in

D:\webcontainer\mehdi_cms

Cheers,

Mehdi



0
 
LVL 35

Expert Comment

by:girionis
ID: 8893353
No comment has been added lately, so it's time to clean up this TA.

I will leave a recommendation in the Cleanup topic area that this question is:

- To be deleted and points refunded

Please leave any comments here within the
next seven days.

PLEASE DO NOT ACCEPT THIS COMMENT AS AN ANSWER !

girionis
Cleanup Volunteer
0
 
LVL 92

Expert Comment

by:objects
ID: 8897976
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
topping2 challenge 13 82
bitbucket vs gitbucket 3 57
oracle 11g 23 49
fibonacci ten numbers 4 28
This was posted to the Netbeans forum a Feb, 2010 and I also sent it to Verisign. Who didn't help much in my struggles to get my application signed. ------------------------- Start The idea here is to target your cell phones with the correct…
Java functions are among the best things for programmers to work with as Java sites can be very easy to read and prepare. Java especially simplifies many processes in the coding industry as it helps integrate many forms of technology and different d…
Viewers learn about the “for” loop and how it works in Java. By comparing it to the while loop learned before, viewers can make the transition easily. You will learn about the formatting of the for loop as we write a program that prints even numbers…
Viewers will learn about arithmetic and Boolean expressions in Java and the logical operators used to create Boolean expressions. We will cover the symbols used for arithmetic expressions and define each logical operator and how to use them in Boole…

910 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

21 Experts available now in Live!

Get 1:1 Help Now