JavaMail Send mail

/*
In the Java version, you often see people asking how to send messages with JavaMail. How do I receive mail? How to access multiple folders, and so on. Problems are scattered, and the response to history has long been submerged in the ocean of problems.
I have done a Java project, which contains a webmail function, the original for the use of Java to javamail groping for some time, finally a little harvest. See the Forum often have this aspect of the problem, so put some of my experience to post out, I hope that some help.
This article only describes the use of JavaMail to implement the Send mail function, which involves SMTP authentication, mail attachment sent, and HTML content mail.
Other information about the implementation of multiple mailboxes, receive POP3 mail and IMAP and other content, will be introduced in subsequent articles.
The following program needs: JAVAMAIL,JAF package, J2ee.jar contains the above two packages, we recommend that you install J2sdkee or direct copy J2ee.jar, add it to the JBuilder library, or system classpath
*/
Package com.me.util.mail;
/**
* @author Zhangkun aistill@msn.com
* @version 1.0
*/
Import java.util.*;
Import javax.mail.*;
Import javax.mail.internet.*;
Import Java.util.Date;
Import javax.activation.*;
Import java.io.*;
Import com.me.util.*;
public class SendMail {
Private MimeMessage mimemsg; MIME Mail Object
Private session session; Mail Session Object
Private Properties props; System Properties
Private Boolean Needauth = false; Does SMTP require authentication
Private String username = ""; SMTP authenticated user name and password
Private String Password = "";
Private Multipart MP; Multipart objects, message content, headers, attachments, and so on are added to it before the MimeMessage object is generated
/**
*
*/
Public SendMail () {
Setsmtphost (getconfig.mailhost)//If no mail server is specified, obtain from the GetConfig class
Createmimemessage ();
}
Public SendMail (String SMTP) {
Setsmtphost (SMTP);
Createmimemessage ();
}
/**
* @param hostName String
*/
public void Setsmtphost (String hostName) {
SYSTEM.OUT.PRINTLN ("Set system properties: Mail.smtp.host =" +hostname);
if (props = = null) props = System.getproperties (); Get System Properties Object
Props.put ("Mail.smtp.host", hostName); Setting up an SMTP host
}
/**
* @return Boolean