Java mail notes

Find the example on the Internet. Here is the original article link: http://www.cnblogs.com/liyazhou/archive/2010/08/20/18020.7.html.

But I always reported an error during the test. I found a lot of articles online and finally found a solution (unfortunately, I still don't understand the principle ).

Now, paste the code here to make a record. You can also refer to this issue.

In additionJava mailJar package, you also needJAF.

Also, some netizens shared their research experiences on Java mail. For details, visit http://www.cnblogs.com/qianru/archive/2010/10.html.

1. send an email

Mailsenderinfo

Import Java. util. properties; public class mailsenderinfo {// IP address and port of the server sending the mail private string mailserverhost; private string mailserverport = "587"; // Private string fromaddress; // The email recipient's address: Private string toaddress; // the username and password used to log on to the email sending server: Private string username; private string password; // whether authentication is required: Private Boolean validate = true; // mail subject private string subject; // mail text content private string content; // Mail Attachment File Name private string [] attachfilenames; /*** get mail session properties */public properties getproperties () {properties P = new properties (); p. put ("mail. SMTP. host ", this. mailserverhost); p. put ("mail. SMTP. port ", this. mailserverport); p. put ("mail. SMTP. auth "," true "); Return P;} Public String getmailserverhost () {return mailserverhost;} public void setmailserverhost (string mailserverhost) {This. mailserverhost = mailserverhost;} Public String getmailserverport () {return mailserverport;} public void setmailserverport (string mailserverport) {This. mailserverport = mailserverport;} public Boolean isvalidate () {return validate;} public void setvalidate (Boolean validate) {This. validate = validate;} Public String [] getattachfilenames () {return attachfilenames;} public void setattachfilenames (string [] filenames) {This. attachfilenames = filenames;} Public String getfromaddress () {return fromaddress;} public void setfromaddress (string fromaddress) {This. fromaddress = fromaddress;} Public String GetPassword () {return password;} public void setpassword (string password) {This. password = password;} Public String gettoaddress () {return toaddress;} public void settoaddress (string toaddress) {This. toaddress = toaddress;} Public String GetUserName () {return username;} public void setusername (string username) {This. username = username;} Public String getsubject () {return subject;} public void setsubject (string subject) {This. subject = subject;} Public String getcontent () {return content;} public void setcontent (string textcontent) {This. content = textcontent ;}}

Myauth

Import javax. mail. authenticator; import javax. mail. passwordauthentication; public class myauth extends authenticator {// be sure to inherit authenticatorstring username = NULL; string Password = NULL; Public myauth () {} public myauth (string username, string password) {This. username = username; this. password = password;} protected passwordauthentication getpasswordauthentication () {return New passwordauthentication (username, password );}}

Simplemailsender

Import Java. util. date; import Java. util. properties; import javax. mail. address; import javax. mail. bodypart; import javax. mail. message; import javax. mail. messagingexception; import javax. mail. multipart; 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; public class simplemailsender {/*** send emails in text format * @ Param mailinfo information of the emails to be sent */Public Boolean sendtextmail (mailsenderinfo mailinfo) {// determine whether identity authentication is required. myauth auth = NULL; properties pro = mailinfo. getproperties (); If (mailinfo. isvalidate () {// If identity authentication is required, create a password authenticator auth = new myauth (mailinfo. getUserName (), mailinfo. getPassword ();} // construct a mail sending session sendmailsession = session based on the mail session attribute and password validators. getdefaultinstance (Pro, auth); try {// create an email message mailmessage = new mimemessage (sendmailsession) based on the session; // create the email sender address from = new internetaddress (mailinfo. getfromaddress (); // sets the sender of the email message mailmessage. setfrom (from); // create the recipient address of the email and set it to address to = new internetaddress (mailinfo. gettoaddress (); mailmessage. setrecipient (message. recipienttype. to, to); // set the subject of the email message mailmessage. setsubject (mailinfo. getsubject (); // set the mail message sending time mailmessage. setsentdate (new date (); // you can specify string mailcontent = mailinfo. getcontent (); mailmessage. settext (mailcontent); // send the email transport. send (mailmessage); Return true;} catch (messagingexception ex) {ex. printstacktrace ();} return false;}/*** send an email in HTML format * @ Param mailinfo message to be sent */Public Boolean sendhtmlmail (mailsenderinfo mailinfo) {// determine whether identity authentication is required. myauth authenticator = NULL; properties pro = mailinfo. getproperties (); // If identity authentication is required, create a password validator if (mailinfo. isvalidate () {authenticator = new myauth (mailinfo. getUserName (), mailinfo. getPassword ();} // construct a mail sending session sendmailsession = session based on the mail session attribute and password validators. getdefaultinstance (Pro, Authenticator); try {// create an email message mailmessage = new mimemessage (sendmailsession) based on the session; // create the mail sender address from = new internetaddress (mailinfo. getfromaddress (); // sets the sender of the email message mailmessage. setfrom (from); // create the recipient address of the email and set it to address to = new internetaddress (mailinfo. gettoaddress (); // message. recipienttype. the to attribute indicates that the receiver type is to mailmessage. setrecipient (message. recipienttype. to, to); // set the subject of the email message mailmessage. setsubject (mailinfo. getsubject (); // set the mail message sending time mailmessage. setsentdate (new date (); // The minimultipart class is a container class that contains the multipart mainpart = new mimemultipart (); // create a mimebodypart bodypart HTML containing HTML content = new mimebodypart (); // set the HTML content in HTML. setcontent (mailinfo. getcontent (), "text/html; charset = UTF-8"); mainpart. addbodypart (HTML); // set the minimultipart object to mailmessage. setcontent (mainpart); // send the email transport. send (mailmessage); Return true;} catch (messagingexception ex) {ex. printstacktrace () ;}return false ;}}

Mailtest

Public class mailtest {public static void main (string [] ARGs) {mailsenderinfo mailinfo = new mailsenderinfo (); mailinfo. setmailserverhost ("smtp.qq.com"); mailinfo. setmailserverport ("25"); // The common value is "25", and the SSL value is "465" or "587". You can refer to mailinfo in mailbox settings. setusername ("xxx@qq.com"); mailinfo. setpassword ("XXX"); // username and password, which are actually used to log on to mailinfo. setfromaddress ("xxx@qq.com"); // sender, that is, the preceding login name mailinfo. settoaddress ("yyy@163.com"); // recipient Mai Linfo. setsubject ("My work mail test"); // The title mailinfo. setcontent ("Hello, \ n \ t this is a test and I hope everything works properly. "); // Content // This class mainly sends the email simplemailsender SMS = new simplemailsender (); SMS. sendtextmail (mailinfo); // sending style format // SMS. sendhtmlmail (mailinfo); // send HTML format }}

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