Hi Nathan,
Thanks for the reply.
I have looked at the examples and they are fine for syntax of the API, but I
think I've got more of an issue with how the emails are being generated, like
you mention below.
I have another quick question. In the rest of the application, I'm using
JSTL fmt library tags to format dates, currency, etc. for I18N. I don't think
I'm going to be able to do that with Velocity, correct?
Disclaimer: I didn't come up with this scheme! :)
We have a JSP where we show the user some boilerplate email text, allow them
to manipulate it and the email subject, specify an email address and then they
submit this.
Within the struts action class we call into a struts service to send the
email. That method creates a couple of VelocityContexts (two different
template files are used), that represent email attachments. This is all
packaged up using MimeMultipart to create the message that we then send via
javax.mail.Transport.
Here is the service init method where the VelocityEngine is initialized:
public void init(Properties initProperties)
throws ServiceException
{
_audit = (AuditTrailService)
this.getApplicationServices().get("AuditTrailService");
_mailFromUserID =
initProperties.getProperty("sasaml.mail.from.user.id");
_mailFromUserName =
initProperties.getProperty("sasaml.mail.from.user.name");
_mailSMTPUserID =
initProperties.getProperty("sasaml.mail.smtp.user.id");
_mailSMTPPassword =
initProperties.getProperty("sasaml.mail.smtp.password");
_mailFileExtension =
initProperties.getProperty("sasaml.mail.file.extension");
_alertServ = (AlertService)
getApplicationServices().get("AlertService");
String _ccSelf =
initProperties.getProperty("sasaml.mail.ccSelf");
if (_ccSelf != null && _ccSelf.equals("enabled"))
ccSelf = true;
else
ccSelf = false;
_msgs = ResourceBundle.getBundle("ApplicationResources");
_appTitle = _msgs.getString("app.title.txt");
InputStream is =
this.getClass().getResourceAsStream(VELOCITY_PROPERTIES_FILE);
Properties velocityProperties = new Properties();
_velocityEngine = new VelocityEngine();
try
{
velocityProperties.load(is);
}
catch (IOException ioe)
{
throw new ServiceException("Unable to load Velocity
properties file: "
+ VELOCITY_PROPERTIES_FILE,
ioe);
}
try
{
_velocityEngine.init(velocityProperties);
}
catch (Exception e)
{
throw new ServiceException("Unable to initialize
Velocity engine.", e);
}
String mailSessionName =
initProperties.getProperty("sasaml.mail.session.name");
try
{
Context ctx = new InitialContext();
_mailSession = (Session) ctx.lookup(mailSessionName);
}
catch (Exception e)
{
throw new ServiceException("Problem initializing
AlertEmailService. Unable to look up MailSession: "
+ mailSessionName, e);
}
_mailHost = _mailSession.getProperty("mail.smtp.host");
}
Here is the method where we are "generating" the template:
private File createFile(String prefix, String template, VelocityContext context)
throws ServiceException
{
Writer writer = null;
File file = null;
context.put("styleSheet", VELOCITY_TEMPLATE_PATH +
STYLE_SHEET_NAME);
try
{
file = File.createTempFile(prefix, ".tmp");
file.deleteOnExit();
writer = new BufferedWriter(new FileWriter(file),
BUFFER_SIZE);
}
catch (IOException e)
{
throw new ServiceException("Unable to create temp " +
prefix + " file or get writer.", e);
}
try
{
// alertTemplate.merge(alertMap,
writer);
_velocityEngine.mergeTemplate(VELOCITY_TEMPLATE_PATH +
template, context, writer);
}
catch (Exception e)
{
throw new ServiceException("Error generating " + prefix
+ " file.", e);
}
finally
{
try
{
writer.close();
}
catch (IOException e)
{
_log.warn("Unable to close writer for file: " +
file.getName(), e);
}
}
return file;
}
Thanks,
Neal
-----Original Message-----
From: Nathan Bubna [mailto:[EMAIL PROTECTED]
Sent: Wednesday, August 24, 2005 5:44 PM
To: Velocity Users List
Subject: Re: Struts and I18N
Hi Neal,
have you checked out the Struts example application in VelocityTools?
It includes a number of "mini-webapps" that demonstrate using various Struts
features with VelocityTools. I believe the mini-webapp "app1"
demonstrates use of the MessageTool for internationalization.
also, i'm curious where/how your are generating these emails? are you doing
this within the servlet? is it as part of a servlet request?
where/how are you creating/getting a Context to merge with the template?
there's a lot that's unclear to me about the way you are approaching this. and
to try and clear up your last curiousity there: yeah, the VelocityViewServlet
is the main way in which the MessageTool is initialized and added to the
Context before processing the template.
so, depending on where/how you are processing your email templates, it may be
easy to get a working MessageTool, or it may not. it's hard to say without
knowing your setup better.
On 8/24/05, Neal Smith <[EMAIL PROTECTED]> wrote:
> Hi All,
>
> I am new to Velocity and am working on part of our application written by
> someone else.
>
> The app is using Velocity to generate emails. Currently, we have templates
> that have hardcoded English text in them. I am trying to I18N these
> templates so that they pick up text from our .properties files.
>
> I believe I don't have things setup correctly, but I can't seem to find a
> "full" example that explains everything end-to-end, so I can't figure out how
> to verify this. From Googling, I see that lots of people seem to have
> similar problems, but none of their solutions seem to work for me. I think
> it's involved with how we use the templates, but I'm too new to know for sure.
>
> I have dl'd the 1.1 Tools. I have only copied the velocity-tools-1.1.jar
> to my lib directory, because it didn't seem like I needed the rest of it and
> I already have Struts. (Am I wrong?) I have setup the web.xml and
> toolbox.xml just like the Velocity website says. I have updated part of the
> template with the following line:
>
> <head>
> <title>$msg.get("app.title.txt") - Alert Details</title>
>
> #include($styleSheet)
>
> </head>
>
> When I run this I get:
>
> 2:4:43 WARN lang
> org.apache.velocity.runtime.exception.ReferenceException: refe rence :
> template = /com/sas/aml/velocity/email/alert_details.vm [line 5,column 1 0] :
> $msg.get("app.title.txt") is not a valid reference.
>
>
>
> The real interesting part, to me anyway, is that we are not accessing these
> templates through regular Struts forwards, etc. From what I understand
> VelocityViewServlet is necessary to use the MessageTool? We are using
> VelocityEngine (via mergeTemplate) and I believe that I'll need to replace
> this with usage of VelocityViewServlet?
>
> As you can tell, I'm getting very fuzzy on all of this last part. Any help
> is appreciated.
>
>
> Thanks,
> Neal Smith
>
>
>
>
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