RE: Dynamic Email
Here's an idea. Its sketched out in Java, but most technologies would work. Use HttpURLConnection to open the page you want (i.e. request the page through the Tomcat server). Copy the result text into the body of the email message. Send the email message. Randy -Original Message- From: Timothy Shadel [mailto:[EMAIL PROTECTED]] Sent: Wednesday, November 14, 2001 5:59 PM To: [EMAIL PROTECTED] Subject: RE: Dynamic Email Thanks for the tip. It looks like the developer's guide at http://jakarta.apache.org/velocity/developer-guide.html#Using% 20Velocity%20In%20Servlets is going to give me the most options there. I'd REALLY like to avoid training my group on ANOTHER view mechanism, and I'd like to take custom JSP tags that we write for initial use in HTML and reuse them in the dynamic e-mail. I'm not satisfied that Velocity will be the best solution, though it seems to be a viable one. Any other ideas of how to use JSP to generate dynamic e-mail content? - Tim [EMAIL PROTECTED] 11/14/01 03:05PM Check out Velocity at apache.org Kevin McBrearty ATG Automation Technologies Group Ltd. __ A computer lets you make mistakes faster than any other invention in human history, with the possible exception of handguns and tequila. - D.W. McArthur -Original Message- From: Timothy Shadel [mailto:[EMAIL PROTECTED]] Sent: Wednesday, November 14, 2001 4:42 PM To: [EMAIL PROTECTED] Subject: Dynamic Email Hi, I'd like to generate dynamic e-mail content, typically based on some parameters stored in the current HttpSession. JSP seems like a great tool for this. I can easily edit the static portion of the e-mail, and have non-technical personnel work with it. I'd get all the advantages JSP gives to dynamic HTML generation. I can't seem to figure out a good way to do it, though. I've tried to use the RequestDispactcher.include(), but there's no way to change the OutputStream to recover the content that was inadvertently streamed to the browser. I can't wrap the request/response objects in the Servlet 2.2 spec (tomcat 3.x), and I'm not sure I'd know the details of how to even if I was running tomcat 4.0. I tried creating a URL and calling getContent(), which returns a PushbackInputStream, but this works only sporadically. Most of the time the buffer has been read completely, and I have no data with which to push it back. All I want to do is load a JSP page, ensure that it's processed within the current Session and Request (so it has access to the needed variables), and then push that content into an e-mail message that I send using the JavaMail API. I assume that somebody else has wanted this type of thing before. If there's another solution to let end-users easily edit the static surroundings of dynamic e-mail content, where I can use templates, internationalization, and other great tools as easily as Struts, please let me know. Thanks, Tim -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED] -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED] -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED] -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED]
RE: Dynamic Email
I actually tried that earlier (my last of 3 attempts before sending this e-mail), but
the InputStream associated with the HttpURLConnection has run past all the content by
the time I get it. I have no idea why it does that. Here's a snipet of the code:
String strURL;
if( request.getServerPort() == 443 ) {
strURL = https://; + request.getServerName() +
request.getContextPath() + /mailContent.jsp?from= + from + to= + to;
} else if (request.getServerPort() == 80 ) {
strURL = http://; + request.getServerName() +
request.getContextPath() + /mailContent.jsp?from= + from + to= + to;
} else {
strURL = http://; + request.getServerName() + : +
request.getServerPort() + request.getContextPath() + /mailContent.jsp?from= + from +
to= + to;
}
java.net.URL url = new java.net.URL( strURL );
java.net.HttpURLConnection conn =
(java.net.HttpURLConnection)url.openConnection();
java.io.InputStream in = (InputStream)conn.getInputStream();
StringBuffer strMailContent = new StringBuffer();
while ( in.available() 0 ) {
strMailContent.append( (char)in.read() );
}
in.close();
conn.disconnect();
message.setText( strMailContent.toString() + \r\n\r\n + text );
But for some reason in.available() almost always returns 0 bytes. I can use my
debugger to see the protected byte array used by the PushbackInputStream, but can't
get at any of the data since the position variable is already pointing to the end of
the array and the mark() and reset() messages aren't supported. I'm guessing that it
may have to do with something that either the container does or the JVM does to pool
or optimize connection requests, but I don't know. If the connection DOES return the
content of the URL, then on the next invocation it ALWAYS returns nothing.
One more thing, using this method ALWAYS causes Tomcat to log the request, so it
appears to be processing the JSP every time this code calls for it. I can also pull
the JSP up multiple times in a browser without any problems. This seemed to be a
fairly simple, fail-safe way to approach it, but I don't understand why it's giving me
trouble...
Any ideas?
Thanks,
Tim
[EMAIL PROTECTED] 11/15/01 04:48AM
Here's an idea. Its sketched out in Java, but most technologies
would work.
Use HttpURLConnection to open the page you want (i.e. request the
page through the Tomcat server). Copy the result text into the body of the
email message. Send the email message.
Randy
-Original Message-
From: Timothy Shadel [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, November 14, 2001 5:59 PM
To: [EMAIL PROTECTED]
Subject: RE: Dynamic Email
Thanks for the tip. It looks like the developer's guide at
http://jakarta.apache.org/velocity/developer-guide.html#Using%
20Velocity%20In%20Servlets is going to give me the most options there.
I'd REALLY like to avoid training my group on ANOTHER view
mechanism, and I'd like to take custom JSP tags that we write
for initial use in HTML and reuse them in the dynamic e-mail.
I'm not satisfied that Velocity will be the best solution,
though it seems to be a viable one.
Any other ideas of how to use JSP to generate dynamic e-mail content?
- Tim
[EMAIL PROTECTED] 11/14/01 03:05PM
Check out Velocity at apache.org
Kevin McBrearty
ATG Automation Technologies Group Ltd.
__
A computer lets you make mistakes faster than any other
invention in human
history, with the possible exception of handguns and tequila. - D.W.
McArthur
-Original Message-
From: Timothy Shadel [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, November 14, 2001 4:42 PM
To: [EMAIL PROTECTED]
Subject: Dynamic Email
Hi,
I'd like to generate dynamic e-mail content, typically based on
some parameters stored in the current HttpSession. JSP seems
like a great tool for this. I can easily edit the static
portion of the e-mail, and have non-technical personnel work with
it. I'd get all the advantages JSP gives to dynamic HTML
generation. I can't seem to figure out a good way to do it,
though. I've tried to use the RequestDispactcher.include(), but
there's no way to change the OutputStream to recover the content
that was inadvertently streamed to the browser. I can't wrap the
request/response objects in the Servlet 2.2 spec (tomcat 3.x),
and I'm not sure I'd know the details of how to even if I was
running tomcat 4.0. I tried creating a URL and calling
getContent(), which returns a PushbackInputStream, but this works
only sporadically. Most of the time the buffer has been read
completely, and I have no data with which to push it back. All I
want to do is load a JSP page, ensure that it's processed within
the current Session and Request (so it has
RE: Dynamic Email (Workaround)
I found a workaround. Apparently the content wasn't ready as soon as my thread
continued, so I just added a try to Thread.sleep( 100 ) a few times and then the
InputStream had data ready to go. One drawback is that the input stream never returns
-1 indicating the end of the input (because the socket's still open??), so I have to
fake it by allowing 3 waits of 1/10 of a second each to see if there's more data
before moving on. Strange, but it seems to work reliably now... From here I'll try
to tack the session information onto the request to get access to at least that in my
JSP page.
[EMAIL PROTECTED] 11/15/01 08:26AM
I actually tried that earlier (my last of 3 attempts before sending this e-mail), but
the InputStream associated with the HttpURLConnection has run past all the content by
the time I get it. I have no idea why it does that. Here's a snipet of the code:
String strURL;
if( request.getServerPort() == 443 ) {
strURL = https://; + request.getServerName() +
request.getContextPath() + /mailContent.jsp?from= + from + to= + to;
} else if (request.getServerPort() == 80 ) {
strURL = http://; + request.getServerName() +
request.getContextPath() + /mailContent.jsp?from= + from + to= + to;
} else {
strURL = http://; + request.getServerName() + : +
request.getServerPort() + request.getContextPath() + /mailContent.jsp?from= + from +
to= + to;
}
java.net.URL url = new java.net.URL( strURL );
java.net.HttpURLConnection conn =
(java.net.HttpURLConnection)url.openConnection();
java.io.InputStream in = (InputStream)conn.getInputStream();
StringBuffer strMailContent = new StringBuffer();
while ( in.available() 0 ) {
strMailContent.append( (char)in.read() );
}
in.close();
conn.disconnect();
message.setText( strMailContent.toString() + \r\n\r\n + text );
But for some reason in.available() almost always returns 0 bytes. I can use my
debugger to see the protected byte array used by the PushbackInputStream, but can't
get at any of the data since the position variable is already pointing to the end of
the array and the mark() and reset() messages aren't supported. I'm guessing that it
may have to do with something that either the container does or the JVM does to pool
or optimize connection requests, but I don't know. If the connection DOES return the
content of the URL, then on the next invocation it ALWAYS returns nothing.
One more thing, using this method ALWAYS causes Tomcat to log the request, so it
appears to be processing the JSP every time this code calls for it. I can also pull
the JSP up multiple times in a browser without any problems. This seemed to be a
fairly simple, fail-safe way to approach it, but I don't understand why it's giving me
trouble...
Any ideas?
Thanks,
Tim
[EMAIL PROTECTED] 11/15/01 04:48AM
Here's an idea. Its sketched out in Java, but most technologies
would work.
Use HttpURLConnection to open the page you want (i.e. request the
page through the Tomcat server). Copy the result text into the body of the
email message. Send the email message.
Randy
-Original Message-
From: Timothy Shadel [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, November 14, 2001 5:59 PM
To: [EMAIL PROTECTED]
Subject: RE: Dynamic Email
Thanks for the tip. It looks like the developer's guide at
http://jakarta.apache.org/velocity/developer-guide.html#Using%
20Velocity%20In%20Servlets is going to give me the most options there.
I'd REALLY like to avoid training my group on ANOTHER view
mechanism, and I'd like to take custom JSP tags that we write
for initial use in HTML and reuse them in the dynamic e-mail.
I'm not satisfied that Velocity will be the best solution,
though it seems to be a viable one.
Any other ideas of how to use JSP to generate dynamic e-mail content?
- Tim
[EMAIL PROTECTED] 11/14/01 03:05PM
Check out Velocity at apache.org
Kevin McBrearty
ATG Automation Technologies Group Ltd.
__
A computer lets you make mistakes faster than any other
invention in human
history, with the possible exception of handguns and tequila. - D.W.
McArthur
-Original Message-
From: Timothy Shadel [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, November 14, 2001 4:42 PM
To: [EMAIL PROTECTED]
Subject: Dynamic Email
Hi,
I'd like to generate dynamic e-mail content, typically based on
some parameters stored in the current HttpSession. JSP seems
like a great tool for this. I can easily edit the static
portion of the e-mail, and have non-technical personnel work with
it. I'd get all the advantages JSP gives to dynamic HTML
generation. I can't seem to figure out a good way to do it,
though. I've tried to use the RequestDispactcher.include
Dynamic Email
Hi, I'd like to generate dynamic e-mail content, typically based on some parameters stored in the current HttpSession. JSP seems like a great tool for this. I can easily edit the static portion of the e-mail, and have non-technical personnel work with it. I'd get all the advantages JSP gives to dynamic HTML generation. I can't seem to figure out a good way to do it, though. I've tried to use the RequestDispactcher.include(), but there's no way to change the OutputStream to recover the content that was inadvertently streamed to the browser. I can't wrap the request/response objects in the Servlet 2.2 spec (tomcat 3.x), and I'm not sure I'd know the details of how to even if I was running tomcat 4.0. I tried creating a URL and calling getContent(), which returns a PushbackInputStream, but this works only sporadically. Most of the time the buffer has been read completely, and I have no data with which to push it back. All I want to do is load a JSP page, ensure that it's processed within the current Session and Request (so it has access to the needed variables), and then push that content into an e-mail message that I send using the JavaMail API. I assume that somebody else has wanted this type of thing before. If there's another solution to let end-users easily edit the static surroundings of dynamic e-mail content, where I can use templates, internationalization, and other great tools as easily as Struts, please let me know. Thanks, Tim -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED]
RE: Dynamic Email
Check out Velocity at apache.org Kevin McBrearty ATG Automation Technologies Group Ltd. __ A computer lets you make mistakes faster than any other invention in human history, with the possible exception of handguns and tequila. - D.W. McArthur -Original Message- From: Timothy Shadel [mailto:[EMAIL PROTECTED]] Sent: Wednesday, November 14, 2001 4:42 PM To: [EMAIL PROTECTED] Subject: Dynamic Email Hi, I'd like to generate dynamic e-mail content, typically based on some parameters stored in the current HttpSession. JSP seems like a great tool for this. I can easily edit the static portion of the e-mail, and have non-technical personnel work with it. I'd get all the advantages JSP gives to dynamic HTML generation. I can't seem to figure out a good way to do it, though. I've tried to use the RequestDispactcher.include(), but there's no way to change the OutputStream to recover the content that was inadvertently streamed to the browser. I can't wrap the request/response objects in the Servlet 2.2 spec (tomcat 3.x), and I'm not sure I'd know the details of how to even if I was running tomcat 4.0. I tried creating a URL and calling getContent(), which returns a PushbackInputStream, but this works only sporadically. Most of the time the buffer has been read completely, and I have no data with which to push it back. All I want to do is load a JSP page, ensure that it's processed within the current Session and Request (so it has access to the needed variables), and then push that content into an e-mail message that I send using the JavaMail API. I assume that somebody else has wanted this type of thing before. If there's another solution to let end-users easily edit the static surroundings of dynamic e-mail content, where I can use templates, internationalization, and other great tools as easily as Struts, please let me know. Thanks, Tim -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED] -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED]
RE: Dynamic Email
Thanks for the tip. It looks like the developer's guide at http://jakarta.apache.org/velocity/developer-guide.html#Using%20Velocity%20In%20Servlets is going to give me the most options there. I'd REALLY like to avoid training my group on ANOTHER view mechanism, and I'd like to take custom JSP tags that we write for initial use in HTML and reuse them in the dynamic e-mail. I'm not satisfied that Velocity will be the best solution, though it seems to be a viable one. Any other ideas of how to use JSP to generate dynamic e-mail content? - Tim [EMAIL PROTECTED] 11/14/01 03:05PM Check out Velocity at apache.org Kevin McBrearty ATG Automation Technologies Group Ltd. __ A computer lets you make mistakes faster than any other invention in human history, with the possible exception of handguns and tequila. - D.W. McArthur -Original Message- From: Timothy Shadel [mailto:[EMAIL PROTECTED]] Sent: Wednesday, November 14, 2001 4:42 PM To: [EMAIL PROTECTED] Subject: Dynamic Email Hi, I'd like to generate dynamic e-mail content, typically based on some parameters stored in the current HttpSession. JSP seems like a great tool for this. I can easily edit the static portion of the e-mail, and have non-technical personnel work with it. I'd get all the advantages JSP gives to dynamic HTML generation. I can't seem to figure out a good way to do it, though. I've tried to use the RequestDispactcher.include(), but there's no way to change the OutputStream to recover the content that was inadvertently streamed to the browser. I can't wrap the request/response objects in the Servlet 2.2 spec (tomcat 3.x), and I'm not sure I'd know the details of how to even if I was running tomcat 4.0. I tried creating a URL and calling getContent(), which returns a PushbackInputStream, but this works only sporadically. Most of the time the buffer has been read completely, and I have no data with which to push it back. All I want to do is load a JSP page, ensure that it's processed within the current Session and Request (so it has access to the needed variables), and then push that content into an e-mail message that I send using the JavaMail API. I assume that somebody else has wanted this type of thing before. If there's another solution to let end-users easily edit the static surroundings of dynamic e-mail content, where I can use templates, internationalization, and other great tools as easily as Struts, please let me know. Thanks, Tim -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED] -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED] -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED]
