Java Send mail

The sending process of a message

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① Sender Edit Message

② mail to the sending account all SMTP servers

③ if the sending account and the receiving account are not on the same SMTP server, the server to which the sending account belongs is responsible for sending the message to the SMTP server to which the recipient belongs

④ the recipient's server passes the message to the recipient's client when the recipient views the message

What you need to do to use Java to develop your program: Create and edit messages, send messages to the sender's server

The basic content of two mails

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as shown, the main components of the message are

Sender, Recipient, CC, BCC, subject, attachment, body

The text is edited with a rich text editor, which can be unformatted text or HTML (with inline pictures)

Three based on Apache Commons email Send mail

1 Introduction of development kits

Apache Commons Email is a wrapper for javamail, so it is necessary to introduce the jar package required by JavaMail and introduce its own jar package.

Activation.jar Bag: http://www.oracle.com/technetwork/java/javase/downloads/index-135046.html

Jdk6 and above have included the jar without introducing

Mail.jar Bag: Https://java.net/projects/javamail/downloads

Java EE contains the jar package without introducing

Apache Commons email:http://commons.apache.org/proper/commons-email/download_email.cgi

2 Introduction to common APIs

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The above class is an implementation of different representations of the message for the body and the attachment, and specific classes add specific functionality.

The e-mail class is an implementation of other content, in addition to the text and attachments,

The Simpleemail class adds unformatted text,

Multipartemail Add an attachment, emailattachment is the encapsulation of the attachment,

Htmlemail add display HTML formatting features

Imagehtmlemail implement inline picture, Htmlemail can also realize inline picture display, but need CID, and Imagehtmlemail no CID

Three sample code

Here is a sample code for developing common

Public void sendemail ()  throws emailexception{    //Create a message that displays body content in HTML format     htmlemail email = new htmlemail ();     //Setting Environment parameters     email.sethostname ("smtp.sina.com");     email.setcharset ("UTF-8");     //set the user name password for the connection server     email.setauthentication ("account",  " Password ")     //set the sender and recipient of the message     email.setfrom (" Email account ");     //can also call Email.setto (acollection) to set multiple receivers,     //or multiple calls to Email.addto     email.addto ("Recepient");     //settings Theme      Email.setsubject ("Apache email send Mail")     //Add Attachment     email.attach ( New file ("g:\\workspace\\javamail\\bin\\mail.properties"));     email.attach (new  File ("g:\\workspace\\javamail\\bin\\notice.txt "));     //Add html    string cid =  Email.embed (New file ("c:\\documents and settings\\administrator\\ Desktop \\ApacheEmail class diagram. png"));     String aHtml =  "
：
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Four common mailbox Send message description
Later continue to explain
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Java Send mail