在jsp中发送email !

作者/出处：Blueski编译（包含了2篇文章，前篇用了sun.net.smtp，后一篇用了javamail.
一、我们可以通过任何支持sun规范中的sun.net.smtp包的JSP引擎(如JSWDK)发送mail。
(警告:使用内置的internal Sun规范包，这将影响到你的jsp程序的可移植性。)
以下scriptlet利用SmtpClient类在jsp文件中发送email。
<%@ page import="sun.net.smtp.SmtpClient, java.io.*" %>
<%
String from="gseshadri@hotmail.com";
String to="govind@jguru.com, govi@bigfoot.com";
try{
SmtpClient client = new SmtpClient("mail.xxxxx.xxx");
client.from(from);
client.to(to);
PrintStream message = client.startMessage();
message.println("To: " + to);
message.println("Subject: Sending email from JSP!");
message.println("This was sent from a JSP page!");
message.println();
message.println("Cool beans! :-)");
message.println();
message.println("Govind Seshadri");
message.println("jGuru.com");
message.println();
client.closeServer();
}
catch (IOException e){
System.out.println("ERROR SENDING EMAIL:"+e);
}
%>
二、 JavaMail是官方的 Java mail API，可参考 http://java.sun.com/products/javamail/。虽然该API比 sun.net.smtp.SmtpClient更丰富或者说更复杂，但它是可移植的。这里重新创建了一个 MailSender类，它包含了 JavaMail API。如下所示：
// ms_ prefix is for MailSender class variables
// str prefix is for String
// astr prefix is for array of Strings
// strbuf prefix is for StringBuffers, etc.
public MailSender(
String strFrom, // sender
String[] astrTo, // recipient(s)
String[] astrBCC, // bcc recipient(s), optional
String strSubject, // subject
boolean debugging)
{
ms_strFrom = strFrom; // who the message is from
ms_astrTo = astrTo; // who (plural) the message is to
ms_debugging = debugging; // who (plural) the message is to