IDC资讯中心
MailToList.asp
<%@ Language=JavaScript %>
<!–#include file = "include/SetGlobals.asp"–>
<!–#include file = "include/DBPath.asp"–>
<%
// output relevant meta tags
Init( "Mail to list" );
// output common top of page
Header( <a href="work.asp">Work</a> –> Mail to list, 3 );
// output page content
Content ( );
// output common bottom of page
Footer( );
%>
<% /* standard page elements */ %>
<!–#include file = "utils/Init.asp"–>
<!–#include file = "utils/Database.asp"–>
<!–#include file = "utils/Header.asp"–>
<!–#include file = "utils/Footer.asp"–>
<%
// ============================================
// the content of this page
// ============================================
function Content ( )
{
Out ( <td width="20%"> </td> );
Out ( <td width="60%"> );
// if the form has a password, validate it first
// so that if it fails we can show the form again
var bSubmitted = (Request.Form.Count > 0);
// has the form been submitted?
if ( bSubmitted )
{
// get the password from the form…
sPassword = "" + Request.Form ( "password" );
// validate the password and moan if it fails
if ( sPassword != sDBPath )
{
Out ( <h3><font color="red">Invalid password!</font></h3> );
// pretend the form hasn\t been sent yet
bSubmitted = false;
}
}
// show the form if not submitted yet
if ( !bSubmitted )
{
Out ( In <a href="Subscribe.asp">Part 1</a> I showed you how I allowed you to subscribe to my mailing list. Here\s where I can post an email to members of that mailing list. );
Out ( <p>Strangely, I\m not going to let you do it, but you <i>can</i> get the source code from the bottom of the page, and learn how I did it. );
// heres the form tag. the action attribute is the name of
// the file that will be called with the answer – in this case
// its the same page. the method can be "post" to send the
// form data behind the scenes or "get" to appending the
// data to the URL in the style page.asp?data1=a&data2=b
//
// use post most of the time – its neater and "get" is limited
// in the amount of data that can be sent.
Out ( <form action="MailToList.asp" method="post"> );
// another table to line up the titles and inputs
Out ( <table border="0" cellpadding="0"> );
Out ( <tr><td align="right" valign="top"> );
Out ( Password: );
Out ( </td><td align="left" valign="top"> );
// a simple text box. well reference it with the name "password"
// and show 37 characters on the form. use the maxlength
// attribute to set the maximum characters they can enter.
// use value="some text" to pre-fill the input with data.
Out ( <input type="password" name="password" size="30"></input> );
Out ( </td></tr> );
Out ( <tr><td align="right" valign="top"> );
Out ( Message: );
Out ( </td><td align="left" valign="top"> );
// textarea is a multiline text box. specify the size with the
// cols and rows attributes. wrap can be "off" (the default)
// "physical" or "virtual". as an example, consider the user
// typing in the following text in a 40 character wide input:
//
// "I wonder how this text will appear to the server when I send it?"
//
// wrap="off" will send it as typed, but the user has to scroll off
// to the right to see the text. (Horrid)
//
// wrap="physical" will physically split the line after the word
// server and send two lines to the server
//
// wrap="virtual" will send one line, as typed, but the user
// will see the text nicely wrap in the input. Perfect!
Out ( <textarea name="message" cols="30" rows="8" wrap="physical"></textarea> );
Out ( </td></tr> );
Out ( <tr><td align="right" valign="top"> );
Out ( );
Out ( </td><td align="left" valign="top"> );
// type=submit" provides a submit button to perform the
// form action. the button says "Submit" unless you override
// with the value attribute.
Out ( <input type="submit" value="Send Mail"></input> );
Out ( </td></tr> );
Out ( </table> );
Out ( </form> );
}
else
{
// get the message from the form
var sMessage = "" + Request.Form ( "message" );
// open the connection
DBInitConnection ( );
// get the emails addresses
var sSQL = SELECT Email FROM MailingList;;
DBGetRecords ( sSQL );
var sEmailList = "";
var sSep = "";
while ( !oRecordSet.EOF )
{
sEmailList += sSep + oRecordSet ( 0 );
sSep = ";";
oRecordSet.MoveNext ( );
}
// free the connection
DBReleaseConnection ( );
Email ( It\s a ShawThing – what\s new?, sEmailList, sMessage );
Out ( <p>Email sent successfully.<p> );
}
Out ( Want to see how this form to mail the subscribers was done? Click below to get all the source code! );
Out ( <p><center><a href="ShowSource.asp? page=MailToList"><img src="images/source.gif" border=0></a></center> );
Out ( </td> );
Out ( <td width="20%"> </td> );
}
// ============================================
// email me!
// ============================================
function Email ( sSubject, sEmail, sMessage )
{
// send an email to the address just to confirm what just happened
var oMail = Server.CreateObject ( "CDONTS.NewMail" );
// setup the mail
oMail.From = oMail.To = MailingList@shawthing.com;
oMail.Bcc = sEmail;
oMail.Importance = 1;
oMail.Subject = sSubject;
oMail.Body = sMessage;
// send it
oMail.Send ( );
// release object
oMail = null;
}
%>
utils/Database.asp
<%
// globals
var oConnection;
var oRecordSet;
var sConnection;
// ============================================
// example usage:
// DBInitConnection ( );
//
// var sSQL = "SELECT * FROM Somewhere";
//
// DBGetRecords ( sSQL );
//
// …use oRecordSet
//
// DBReleaseRecords ( ); // optional step
//
// DBReleaseConnection ( );
// ============================================
// ============================================
// initializes database variables for first use on page
// ============================================
function DBInitConnection ( )
{
// dont open it again if already opened!
if ( sConnection != undefined )
return;
// get connection object
oConnection = Server.CreateObject( ADODB.Connection );
// get the database connection string
// use MapPath to make relative path into physical path
sConnection = Provider=Microsoft.Jet.OLEDB.4.0; Data Source= + Server.MapPath ( sDBPath );
// open the connection
oConnection.Open( sConnection );
// as an attempt at optimization we now open
// the recordset here, not in DBGetRecords()
oRecordSet = Server.CreateObject ( ADODB.Recordset );
}
// ============================================
// tidies up after DBInitConnection
// ============================================
function DBReleaseConnection ( )
{
// dont release the connection if not connected!
if ( sConnection == undefined )
return;
// as an attempt at optimization we now close
// the recordset here, not in DBReleaseRecords()
if ( oRecordSet.State != 0 )
oRecordSet.Close();
oRecordSet = undefined;
oConnection.Close();
oConnection = undefined;
sConnection = undefined;
}
// ============================================
// executes the passed in SQL statement
// and returns the oRecordSet object
// ============================================
function DBGetRecords ( sSQL )
{
// remember that this can fail if passed garbage, and hence
// oRecordSet will already be closed
oRecordSet = oConnection.Execute( sSQL );
}
// ============================================
// tidies up after DBGetRecords
// ============================================
function DBReleaseRecords ( )
{
// IMPORTANT: THIS FUNCTION INTENTIONALLY BLANK
// as an attempt at optimization we now open/close
// the recordset with the connection, not separately
// so all code was moved to DBReleaseConnection.
// it is recommended that you still call this function as soon
// as the recordset is finished with.
// note that it is assumed by the caller that it is legal
// to call DBReleaseConnection without calling this function
}
%>
