JAVA mail, java mail

JAVA mail, java mail

Email sending

 

1. Write an attribute required for MailSendProper class Encapsulation

Import java. util. Properties;

Public class MailSendProper {
Private String Host; // the ip address of the email sending server
Private String Port; // The Port number of the email sending server.
Private String SendAddress; // the address of the sender
Private String ReceiveAddress; // email recipient's address
Private String username; // username used to log on to the sender's mailbox
Private String password; // The password used to log on to the sender's mailbox.
Private boolean isvalidate = true; // whether authentication is required
Private String subject; // mail title
Private String content; // email content

Public String getSubject (){
Return subject;
}
Public void setSubject (String subject ){
This. subject = subject;
}
Public String getContent (){
Return content;
}
Public void setContent (String content ){
This. content = content;
}
Public String getHost (){
Return Host;
}
Public void setHost (String host ){
Host = host;
}
Public String getPort (){
Return Port;
}
Public void setPort (String port ){
Port = port;
}
Public String getSendAddress (){
Return SendAddress;
}
Public void setSendAddress (String sendAddress ){
SendAddress = sendAddress;
}
Public String getReceiveAddress (){
Return ReceiveAddress;
}
Public void setReceiveAddress (String receiveAddress ){
ReceiveAddress = receiveAddress;
}
Public String getUsername (){
Return username;
}
Public void setUsername (String username ){
This. username = username;
}
Public String getPassword (){
Return password;
}
Public void setPassword (String password ){
This. password = password;
}
Public boolean isIsvalidate (){
Return isvalidate;
}
Public void setIsvalidate (boolean isvalidate ){
This. isvalidate = isvalidate;
}
Public Properties getProperties (){
Properties properties = new Properties ();
Properties. put ("mail. smtp. host", this. Host );
Properties. put ("mail. smtp. port", this. Port );
Properties. put ("mail. smtp. auth", isvalidate? "True": "false ");
Return properties;
}
}

 

 

2. Write an EmailMessage to encapsulate the sending information

Public class EmailMessage {
Private String title;
Private String context;
Private String toEmail;

Public EmailMessage (){
Super ();
}
Public EmailMessage (String title, String context, String toEmail ){
Super ();
This. title = title;
This. context = context;
This. toEmail = toEmail;
}
Public String getTitle (){
Return title;
}
Public void setTitle (String title ){
This. title = title;
}
Public String getContext (){
Return context;
}
Public void setContext (String context ){
This. context = context;
}
Public String getToEmail (){
Return toEmail;
}
Public void setToEmail (String toEmail ){
This. toEmail = toEmail;
}
}

 

3. Write a MailAttorney email password validator class

Import javax. mail. Authenticator;
Import javax. mail. PasswordAuthentication;

Public class MailAttorney extends Authenticator {
Private String username;
Private String password;

Public MailAttorney (String username, String password ){
This. username = username;
This. password = password;
}
// Override the parent method to obtain the password authenticator
@ Override
Protected PasswordAuthentication getPasswordAuthentication (){
Return new PasswordAuthentication (username, password );
}
}

 

4. Write a MailSend email tool class

Import java. util. Date;

Import javax. mail. Address;
Import javax. mail. Message;
Import javax. mail. Session;
Import javax. mail. Transport;
Import javax. mail. internet. InternetAddress;
Import javax. mail. internet. MimeMessage;

Import com. VTBBS. entity. EmailMessage;

Public class MailSend {
Public static boolean mailTest (MailSendProper mailsender ){
MailAttorney attorney = null;
If (mailsender. isIsvalidate () {// determine whether identity authentication is required
Attorney = new MailAttorney (mailsender. getUsername (), mailsender. getPassword ());
}
// Construct a mail sending seesion Based on the mailbox session attribute and password validators
Session session = Session. getInstance (mailsender. getProperties (), attorney );
// Create an email message based on the session
Message mailMessage = new MimeMessage (session );
Try {
// Create the sender's address
Address from = new InternetAddress (mailsender. getSendAddress ());
// Set the sender of the email message
MailMessage. setFrom (from );
// Create an email Receiving address and set it to the email message.
Address to = new InternetAddress (mailsender. getReceiveAddress ());
MailMessage. setRecipient (Message. RecipientType. TO, );
MailMessage. setSubject (mailsender. getSubject (); // you can specify the mail title.
MailMessage. setSentDate (new Date (); // you can specify the email sending time.
MailMessage. setText (mailsender. getContent (); // you can specify the email content.
Transport. send (mailMessage );
Return true;
} Catch (Exception e ){
E. printStackTrace ();
Return false;
}
}

Public static boolean sendEmail (EmailMessage message ){
MailSendProper mail = new MailSendProper ();
Mail. setHost ("smtp.126.com"); // smtp Simple mail transmission protocol. The default port number is 25,
Mail. setPort ("25 ");
Mail. setIsvalidate (true); // authentication required
Mail. setUsername (""); // set the logon Username
Mail. setPassword (""); // set the sender's password
Mail. setSendAddress (""); // you can specify the sender address and logon user name for sending this message.
Mail. setReceiveAddress (message. getToEmail (); // you can specify the recipient's address.
Mail. setSubject (message. getTitle (); // you can specify the email subject.
Mail. setContent (message. getContext (); // you can specify the email content.
Return mailTest (mail );
}

}

Note: The POP3/SMTP service must be enabled for the mailbox to be sent successfully,

Different email addresses have different transmission protocols, as shown in figure

Qq mail: SMTP transmission protocol is port 25 of smtp.qq.com

POP3 transmission protocol is pop3.qq.com port 110

5. Test the usage

Public static void main (String [] args ){
EmailMessage message = new EmailMessage ();
String code = String. valueOf (Math. random (). substring (3, 9); // generate the verification code
Message. setTitle ("email Verification"); // mail title
Message. setContext ("Dear user, your verification code is" + code + ". "); // Email content
Message. setToEmail ("940202884@qq.com"); // to whom to send
System. out. println (MailSend. sendEmail (message )? "Sent successfully": "failed to send ");
}

If you want to reprint it, please mark it here