Re: Sending mail from a bean..

From:

Simon Brooke <simon@jasmine.org.uk>

Newsgroups:

comp.lang.java.programmer

Date:

Tue, 07 Nov 2006 13:41:06 +0000

Message-ID:

<j0f624-egg.ln1@gododdin.internal.jasmine.org.uk>

in message <1162899420.571171.148660@i42g2000cwa.googlegroups.com>,
gbattine ('gbattine@alice.it') wrote:

i need your help.
I've a jsf application a page in which user can clicks on a button
"Password lost?".
I want the bean called by this botton sends an email to user showing
password from its database.
How can i do it?
I use jsf 1.1.0.1 e servlet 2.3
Can someone post me some working code?
I've read on internet but i'm bit confused,so simple code can helps me.

package uk.co.weft.pres.server;

import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;

import uk.co.weft.alert.Alert;
import uk.co.weft.alert.AlertingException;
import uk.co.weft.dbutil.Context;
import uk.co.weft.dbutil.Contexts;
import uk.co.weft.dbutil.DataFormatException;
import uk.co.weft.dbutil.DataStoreException;
import uk.co.weft.dbutil.TableDescriptor;
import uk.co.weft.htform.Form;
import uk.co.weft.htform.InitialisationException;
import uk.co.weft.htform.TableWrapperForm;

/**
* An table wrapper form which is capable of mailing a password to the
* address registered to it
*/
public abstract class AbstractMailPass extends TableWrapperForm
{
  //~ Instance fields -----------------------------------------------

  /** our postman */
  protected Alert pat;

  /** the subject for emails */
  protected String mailSubject =
    "Your password on the Press Release Server";

  //~ Methods -------------------------------------------------------

  /**
   * specialisation: add a MailPassWidget to my authentificationWidgetSet
   */
  public void init( Context config ) throws InitialisationException
  {
    super.init( config );

    config.put( Alert.MAILTEMPLATETOKEN,
      config.get( "mail_pass_template_url" ) );

    try
    {
      pat = new Alert( config );
    }
    catch ( AlertingException e )
    {
      throw new InitialisationException( "Could not create alert agent",
        e );
    }

    String v = config.getValueAsString( Alert.MAILSUBJECTTOKEN );

    if ( v != null )
    {
      mailSubject = v;
    }
  }

  /**
   * mail to the user the password corresponding to the email address
   * in the context
   *
   * @param context the context
   *
   * @return true if mail was despatched
   */
  protected boolean mailPass( Context context ) throws DataStoreException
  {
    boolean result = false;

    String email = context.getValueAsString( Subscriber.EMAILFN );

    if ( email != null )
    {
      Context searchContext = new Context( );
      searchContext.copyDBTokens( context );
      searchContext.put( "email", email );

      Contexts results =
        TableDescriptor.getDescriptor( "subscriber", "subscriber",
          context ).match( searchContext, true );

      if ( results.isEmpty( ) )
      {
        throw new DataFormatException(
          grs( "Could not find a subscription with " +
            "that email address", context ) );
      }
      else
      {
        Context candidate = (Context) results.get( 0 );
        InternetAddress recipient = null;

        try
        {
          recipient = new InternetAddress( email );
        }
        catch ( AddressException e )
        {
          throw new DataFormatException( email +
            grs( "is not a well formed address", context ), e );
        }

        try
        {
          if ( !pat.sendAlert( recipient, mailSubject, candidate ) )
          {
            throw new DataStoreException(
              grs( "Could not send password message",
                context ) );
          }
        }
        catch ( AlertingException e1 )
        {
          throw new DataStoreException(
            grs( "Could not send password message",
              context ), e1 );
        }

        context.put( Form.ACTIONEXECUTEDTOKEN,
          grs( "Password mailed", context ) );

        result = true;
      }
    }

    return result;
  }
}

--
simon@jasmine.org.uk (Simon Brooke) http://www.jasmine.org.uk/~simon/

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