Java Mail Send mail

Recently did the automatic Send mail feature, with attachments: The required jar package has, if the development tool for MyEclipse there is a conflict,

The original mail jar package for myeclipse should be deleted;

Open Javaee.jar, delete the original mail folder, and then restart MyEclipse!

The code is as follows:

Package com.noahwm.bigscreen.exportexcel;

Import Java.util.Date;
Import java.util.Enumeration;
Import java.util.Properties;
Import Java.util.Vector;

Import javax.activation.*;
Import Javax.mail.Authenticator;
Import Javax.mail.Message;
Import Javax.mail.Multipart;
Import javax.mail.PasswordAuthentication;
Import javax.mail.Session;
Import Javax.mail.Transport;
Import javax.mail.internet.InternetAddress;
Import Javax.mail.internet.MimeBodyPart;
Import Javax.mail.internet.MimeMessage;
Import Javax.mail.internet.MimeMultipart;
Import javax.mail.internet.MimeUtility;

Import Java.io.File;
Import Java.io.FileInputStream;
Import java.io.IOException;
Import java.text.ParseException;
Import Java.text.SimpleDateFormat;
Import java.util.ArrayList;
Import Java.util.Date;
Import Java.util.HashSet;
Import Java.util.Iterator;
Import java.util.List;
Import Java.util.Locale;
Import Java.util.Set;
Import Java.util.regex.Pattern;



/**
* <p>
* Title: Send mail using JavaMail
* </p>
*/
public class Mailutils {

String to = "";//Recipient
String from = "";//Sender
String host = "";//SMTP hosts
String username = "";
String password = "";
String filename = "";//Attachment file name
String subject = "";//Message subject
String content = "";//Message body
Vector file = new vector ();//Attachment file Collection



/**
* <br>
* Method Description: Default constructor <br>
* Input Parameters: <br>
* Return type:
*/
Public Mailutils () {
}

/**
* <br>
* Method Description: Constructor, provide direct parameter incoming <br>
* Input Parameters: <br>
* Return type:
*/
Public Mailutils (string to, string from, String smtpserver,
String Username, string password, string subject, string content) {
This.to = to;
This.from = from;
This.host = SmtpServer;
This.username = Username;
This.password = password;
This.subject = subject;
this.content = content;
}

/**
* <br>
* Method Description: Set mail server address <br>
* Input parameters: String host Mail server address name <br>
* Return type:
*/
public void Sethost (String host) {
This.host = host;
}

/**
* <br>
* Method Description: Set the login server check password <br>
* Input Parameters: <br>
* Return type:
*/
public void SetPassword (String pwd) {
This.password = pwd;
}

/**
* <br>
* Method Description: Set the login server check user <br>
* Input Parameters: <br>
* Return type:
*/
public void Setusername (String USN) {
This.username = USN;
}

/**
* <br>
* Method Description: Set Email destination email <br>
* Input Parameters: <br>
* Return type:
*/
public void Setto (String to) {
This.to = to;
}

/**
* <br>
* Method Description: Set mail send source mailbox <br>
* Input Parameters: <br>
* Return type:
*/
public void Setfrom (String from) {
This.from = from;
}

/**
* <br>
* Method Description: Set Mail subject <br>
* Input Parameters: <br>
* Return type:
*/
public void Setsubject (String subject) {
This.subject = subject;
}

/**
* <br>
* Method Description: Set the message content <br>
* Input Parameters: <br>
* Return type:
*/
public void SetContent (String content) {
this.content = content;
}

/**
* <br>
* Method Description: Convert the theme to Chinese <br>
* Input parameters: String strText <br>
* Return type:
*/
public string Transferchinese (string strText) {
try {
StrText = Mimeutility.encodetext (New String (Strtext.getbytes (),
"gb2312"), "gb2312", "B");
} catch (Exception e) {
E.printstacktrace ();
}
return strText;
}

/**
* <br>
* Method Description: Add attachments to the attachment combination <br>
* Input Parameters: <br>
* Return type:
*/
public void Attachfile (String fname) {
File.addelement (fname);
}

/**
* <br>
* Method Description: Send mail <br>
* Input Parameters: <br>
* Return Type: Boolean success is true, and vice versa is False
*/
public Boolean sendMail () {

Construct Mail session
Properties Props = new properties ();
Props.put ("Mail.smtp.host", host);
Props.put ("Mail.smtp.auth", "true");
Session session = Session.getdefaultinstance (props,
New Authenticator () {
Public Passwordauthentication getpasswordauthentication () {
return new passwordauthentication (username, password);
}
});
Session session = Session.getdefaultinstance (props);
Session session = Session.getdefaultinstance (props, null);

try {
Constructs a mimemessage and sets a basic value
MimeMessage msg = new MimeMessage (session);
MimeMessage msg = new MimeMessage ();
Msg.setfrom (New InternetAddress (from));


Msg.addrecipients (Message.RecipientType.TO, address); This can only be sent to a single person email
Msg.setrecipients (Message.RecipientType.BCC, Internetaddress.parse (to));
Subject = Transferchinese (subject);

Msg.setsubject (subject);

Construction multipart
Multipart MP = new Mimemultipart ();

Add body to multipart
MimeBodyPart mbpcontent = new MimeBodyPart ();
Mbpcontent.setcontent (Content, "text/html;charset=gb2312");

Add to MimeMessage (multipart representative body)
Mp.addbodypart (mbpcontent);

Add an attachment to a multipart
Enumeration efile = File.elements ();
while (Efile.hasmoreelements ()) {

MimeBodyPart mbpfile = new MimeBodyPart ();
filename = Efile.nextelement (). toString ();
Filedatasource FDS = new Filedatasource (filename);
Mbpfile.setdatahandler (New DataHandler (FDS));
This method can solve the attachment garbled problem.
String Filename= new String (Fds.getname (). GetBytes ("gb2312"), "iso8859-1");


Mbpfile.setfilename (filename);
Add to MimeMessage (multipart on behalf of attachment)
Mp.addbodypart (Mbpfile);

}

File.removeallelements ();
Add MimeMessage to multipart
Msg.setcontent (MP);
Msg.setsentdate (New Date ());
Msg.savechanges ();
Send mail

Transport Transport = Session.gettransport ("SMTP");
Transport.connect (host, username, password);
Transport.sendmessage (MSG, msg.getallrecipients ());
Transport.close ();
} catch (Exception Mex) {
Mex.printstacktrace ();
Exception ex = null;
if (ex = Mex.getnextexception ()) = null) {
Ex.printstacktrace ();
//          }
return false;
}
return true;
}



/**
* <br>
* Method Description: Main method, for testing <br>
* Input Parameters: parameter self-filling <br>
* Return type:
*/
public static void Main (string[] args) {
Mailutils sendmail = new Mailutils ();

Mail server
Sendmail.sethost ("xxxx.xx.com");
User name
Sendmail.setusername ("xxxx");
Password
Sendmail.setpassword ("xxxx");
Receiving party
Sendmail.setto ([email protected]);
Sending party
Sendmail.setfrom ("[email protected]");
Title
Sendmail.setsubject ("Mail Header");
Message content
Sendmail.setcontent ("hi!man~~");
String FilePath = "D://xx.txt";
Attachment
Sendmail.attachfile (FilePath);
if (Sendmail.sendmail ()) {
System.out.println ("--------------automatic Mail sending------------successfully");
Delete original file
Boolean flag = DeleteFile (FilePath);
if (flag) {
System.out.println ("--------------original file deletion succeeded-------------");
}else{
System.out.println ("--------------Original file deletion failed-------------");
}
}else{
System.out.println ("--------------automatic Mail Failure-------------");
}
}


public static Boolean DeleteFile (String spath) {
Boolean flag = false;
File File = new file (spath);
The path is a file and is not empty to delete
if (File.isfile () && file.exists ()) {
File.delete ();
Flag = true;
}
return flag;
}
}

Java Mail Send mail