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Posted to user@velocity.apache.org by newbie-gero <ch...@e7tech.com> on 2008/05/21 10:47:42 UTC

could not display java values in velocity vm template

Greetings, 
i have just started out velocity and i not able to put the java values on
the vm template.

This is the java file where i have written the codes and to be pass to the
velocity

package com.velocityData.velocityObj;

import java.io.StringWriter;

import java.util.*;
import java.util.ArrayList;
import java.util.Map;
import java.util.HashMap;

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

import javax.servlet.ServletConfig;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Properties;

public class velocityTest {
    
   static String vmPath = "";
   static String language = "";
    public String handleRequest(ArrayList velocityList, ArrayList
notificationList) throws Exception {
        
        vmPath = (String)velocityList.get(0);
        language = (String)velocityList.get(1);
        
        Properties p = new Properties();
        p.setProperty( "resource.loader", "class" );
        p.setProperty( "class.resource.loader.class",
"org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader" );
        
        VelocityEngine ve = new VelocityEngine();
        ve.init(p);
        System.out.println("Inside the
velocityTest_________________________");
        ArrayList list = new ArrayList();
        Map map = new HashMap();

        //map.put("name", "horse");
        //map.put("price", "$100.00");
        //list.add(map);
 
        for ( int i=0; i < notificationList.size(); i++) {
            map.put("Variable"+i,notificationList.get(i));
            
        }   
            
        list.add(map);
        
        Collection c = map.values();
        Iterator itr = c.iterator();
        while(itr.hasNext())
        System.out.println(itr.next());
        
        VelocityContext context = new VelocityContext();
       
        context.put("emailList", list);
        Template t = null;
        try
        {
             t = ve.getTemplate( vmPath + language);
        }
        catch (ResourceNotFoundException e) 
        {
                e.printStackTrace();     
        } 
        catch (ParseErrorException e) 
        {
                e.printStackTrace();
        } 
        catch (Exception e) 
        {
                e.printStackTrace();
        }
        StringWriter writer = new StringWriter();
        t.merge( context, writer );
       // System.out.println( writer.toString() );
        return writer.toString();
    }
}


This is the vm template i create

<HTML>
    <HEAD>
      <TITLE> Booking Confirmation</TITLE>
    </HEAD>

    <BODY>
        <br/><br/>
 #set( $count = 1 )  

#foreach ( $email in $emailList)
        Transaction No: $email.variable0
    <br/>

    Date: $email.variable1
    <br/>
    <br/><br/>

    Total purchased: $email.variable2
    <br/>

    Total amount charged: $email.variable3
    <br/>
    <br/><br/>

   
=============================================================================
    <br/><br/>


    Dear $email.variable4 ,
        $email.variable2
    <br/>
    <br/><br/>

        Delivery: $email.variable5
    <br/>
    <br/><br/>

    
       Your Internet Account number is $email.variable6     <br/><br/>
#set( $count = $count + 1 )

#end


    
    Thank you 
    </BODY>
</HTML>


I want to replace the $email.variable1, $email.variable2, $email.variable3
and so with the java values. But instead of display the value it display
$email.variable1, $email.variable2 etc on the client browser.

I have upload my file here. I'm using Jboss and dunmping the file into the
server should work instantly
this is the file:    http://www.nabble.com/file/p17358754/velocity.war.zip
velocity.war.zip 

Please do give me guidance

Thanks
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Re: could not display java values in velocity vm template

Posted by Christopher Schultz <ch...@christopherschultz.net>.
To whom it may concern,

newbie-gero wrote:
>         ArrayList list = new ArrayList();
>         Map map = new HashMap();
> 
>         for ( int i=0; i < notificationList.size(); i++) {
>             map.put("Variable"+i,notificationList.get(i));
>         }   

Note: key values start with "Variable" (with a leading capital letter).

>         list.add(map);

Ok.

[snip]

>         context.put("emailList", list);

Ok.

> #foreach ( $email in $emailList)
>         Transaction No: $email.variable0
>     <br/>

I think you want:

     Transation No: $email.Variable0

Velocity first looks for a method called "getVaraiable0()" on whatever 
object "email" is. Since "email" is a map, that method does not exist. 
Then, Velocity looks for a method called "get" that takes a String 
argument (which Map does), and calls get with the String from the 
reference (in this case, "varaiable0"). Note that the lookup is 
case-sensitive.

I think you just need to capitalize "Variable0" and you'll be good to go.

-chris