JavaMail email development, javamail mail

JavaMail email development, javamail mail

1. Only text emails

The code example is as follows:

Package com. lyh. sendemail; import java. util. properties; import javax. mail. message; import javax. mail. session; import javax. mail. transport; import javax. mail. internet. internetAddress; import javax. mail. internet. mimeMessage; // send the public class MessageDemo1 {public static void main (String [] args) throws Exception {Properties props = new Properties (); // key value: configure the parameter. Configure props when actually sending the email. setProperty ("mail. transport. protocol "," smtp "); // specifies the protocol for sending mails. The parameter is the props specified in the specification. setProperty ("mail. host "," smtp.163.com "); // specifies the address of the sender server. The parameter is specified in the Specification // props. setProperty ("mail. debug "," true "); // debug mode of mail sending. The parameter is the props specified in the specification. setProperty ("mail. smtp. auth "," true "); // request the server for identity authentication. The parameter is related to the specific JavaMail implementation. Session session = Session. getInstance (props); // The Environment used to send the email to configure the session. setDebug (true); MimeMessage message = new MimeMessage (session); // set the mail header message. setFrom (new InternetAddress ("xxx@163.com"); message. setRecipients (Message. recipientType. TO, "xxx@qq.com"); message. setSubject ("This is second message"); // sets the body message. setContent ("
2. emails with images
A. Complex email encapsulation model

Code example
Package com. lyh. sendemail; import java. util. properties; import javax. activation. dataHandler; import javax. activation. fileDataSource; import javax. mail. message; 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; // send the public class MessageDem email. O2 {public static void main (String [] args) throws Exception {Properties props = new Properties (); // key value: configuration parameter. Configure props when actually sending the email. setProperty ("mail. transport. protocol "," smtp "); // specifies the protocol for sending mails. The parameter is the props specified in the specification. setProperty ("mail. host "," smtp.163.com "); // specifies the address of the sender server. The parameter is specified in the Specification // props. setProperty ("mail. debug "," true "); // debug mode of mail sending. The parameter is the props specified in the specification. setProperty ("mail. smtp. auth "," true "); // request the server for identity authentication. The parameter is related to the specific JavaMail implementation. Session session = Session. getInstance (props); // The Environment used to send the email to configure the session. setDebug (true); MimeMessage message = new MimeMessage (session); // set the mail header message. setFrom (new InternetAddress ("xxx@163.com"); message. setRecipients (Message. recipientType. TO, "xxx@qq.com"); message. setSubject ("This is second message"); // you can specify the text part MimeBodyPart textPart = new MimeBodyPart. setContent ("aaa  aaa", "text/html"); // MimeBodyPart imagePart = new MimeBodyPart (); imagePart. setContentID ("mm"); // Add files on the disk to the part and use the JAF framework DataHandler dh = new DataHandler (new FileDataSource ("src/0.jpg"); imagePart. setDataHandler (dh); MimeMultipart mp = new MimeMultipart (); mp. addBodyPart (textPart); mp. addBodyPart (imagePart); mp. setSubType ("related"); // message related to the subtype. setContent (mp); message. saveChanges (); // send the email Transport ts = session. getTransport (); ts. connect ("xxx@163.com", "123456"); // The password is the authorization code not the logon password of the mailbox ts. sendMessage (message, message. getAllRecipients (); // object, using the instance method }}
3. emails with text, images, and attachments
Code example:

Package com. lyh. sendemail; import java. util. properties; import javax. activation. dataHandler; import javax. activation. fileDataSource; import javax. mail. message; 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. mi MeUtility; // send the public class MessageDemo3 {public static void main (String [] args) throws Exception {Properties props = new Properties (); // key value: configuration parameter. Configure props when actually sending the email. setProperty ("mail. transport. protocol "," smtp "); // specifies the protocol for sending mails. The parameter is the props specified in the specification. setProperty ("mail. host "," smtp.163.com "); // specifies the address of the sender server. The parameter is specified in the Specification // props. setProperty ("mail. debug "," true "); // debug mode of mail sending. The parameter is the props specified in the specification. setProperty ("mail. smtp. auth "," true "); // request the server for identity authentication. The parameter is related to the specific JavaMail implementation. Session session = Session. getInstance (props); // environment configuration used for sending emails // session. setDebug (true); MimeMessage message = new MimeMessage (session); // set the mail header message. setFrom (new InternetAddress ("xxx@163.com"); message. setRecipients (Message. recipientType. TO, "xxxqq.com"); message. setSubject ("this is a complex email"); // set the body // make the text part MimeBodyPart textPart = new MimeBodyPart (); textPart. setContent ("Beauty  aaa", "text/html; charset = UTF-8 "); // picture part: MimeBodyPart imagePart = new MimeBodyPart (); imagePart. setContentID ("mm"); // Add files on the disk to the part and use the JAF framework DataHandler dh = new DataHandler (new FileDataSource ("src/0.jpg"); imagePart. setDataHandler (dh); MimeMultipart mp = new MimeMultipart (); mp. addBodyPart (textPart); mp. addBodyPart (imagePart); mp. setSubType ("related"); // MimeBodyPart textImagePart = new MimeBodyPart (); // Add MimeMultipart to MimeBodyPart to send the attachment textImagePart. setContent (mp); // create the attachment part MimeBodyPart attachmentPart = new MimeBodyPart (); dh = new DataHandler (new FileDataSource ("src/account .rar"); String filename = dh. getName (); attachmentPart. setDataHandler (dh); // manually set the file name to prevent garbled characters. Use MimeUtility in javaMail to encode the attachmentPart. setFileName (MimeUtility. encodeText (filename); // The final MimeMultipart finalMp = new MimeMultipart (); finalMp. addBodyPart (attachmentPart); finalMp. addBodyPart (textImagePart); finalMp. setSubType ("mixed"); message. setContent (finalMp); message. saveChanges (); // send the email Transport ts = session. getTransport (); ts. connect ("xxx@163.com", "123456"); // The password is the authorization code not the logon password of the mailbox ts. sendMessage (message, message. getAllRecipients (); // object, using the instance method }}