The examples in this article share the specific implementation code of the email sending and receiving function for your reference. The specific content is as follows
Preparation work, environment construction:
1. Build a mail server locally
Easymail server,
2. Create a new email account
Zhang San sent an email to Li Si.
Step 1:
Create a new domain name: Tools, Server settings, enter in the single domain name box
Step 2:
Create a new email account: zhangsan@
lisi@
3. Install foxmail
Configure the email sending server (smtp): localhost 25
Email receiving server (pop3): localhost 110
Create a new account and you can receive emails!
Notice
If it is a web project, because Javaee comes with email function, there may be problems!
We need to use our own file functions! You need to delete the mail package in javaee!
use:
For JavaMail development, first introduce jar files:
[If you use jdk1.6 or above, you can do not use this jar file]
【Email sending core package】
/**
* 1. Send a normal email
* @author
*
*/
public class App_SendMail {
@Test
public void testSend() throws Exception {
//0. Mail parameters Properties prop = new Properties();
("", "smtp"); // Specify the protocol ("", "localhost"); // Host ("", 25); // Port ("", "true"); // User password authentication ("", "true"); // Debug mode
//1. Create a mail session Session session = (prop);
//2. Create a mail object (whole email object) MimeMessage message = new MimeMessage(session);
//3. Set the mail body parameters: //3.1 Title ("My first email");
//3.2 Email sending time (new Date());
//3.3 Sender (new InternetAddress("zhangsan@"));
//3.4 Recipient (, new InternetAddress("lisi@"));
//3.5 Content ("Hello, it has been sent successfully! Text..."); // Simple plain text email (); // Save email (optional)
//4. Send Transport trans = ();
("zhangsan", "888");
// Send email (message, ());
();
}
}
With pictures
/**
* Email with image resources
* @author
*
*/
public class App_2SendWithImg {
// Initialize parameters private static Properties prop;
// Sender private static InternetAddress sendMan = null;
static {
prop = new Properties();
("", "smtp"); // Specify the protocol ("", "localhost"); // Host ("", 25); // Port ("", "true"); // User password authentication ("", "true"); // Debug mode try {
sendMan = new InternetAddress("zhangsan@");
} catch (AddressException e) {
throw new RuntimeException(e);
}
}
@Test
public void testSend() throws Exception {
// 1. Create a mail session Session session = (prop);
// 2. Create a mail object MimeMessage message = new MimeMessage(session);
// 3. Set parameters: title, sender, recipient, sending time, content ("Email with pictures");
(sendMan);
(, new InternetAddress("lisi@"));
(new Date());
/********************* Set email content: Multifunctional user email (related)*********************/
// 4.1 Build a multi-functional mail block MimeMultipart related = new MimeMultipart("related");
// 4.2 Build multi-functional mail block content = text on the left + picture resources on the right MimeBodyPart content = new MimeBodyPart();
MimeBodyPart resource = new MimeBodyPart();
// Set specific content: a. Resources (pictures) String filePath = App_2SendWithImg.("").getPath();
DataSource ds = new FileDataSource(new File(filePath));
DataHandler handler = new DataHandler(ds);
(handler);
(""); // Set the resource name and refer to the foreign key
// Set specific content: b. Text ("<img src='cid:'/> OK Haha！", "text/html;charset=UTF-8");
(content);
(resource);
/*********4.3 Add complex emails built to the emails *******/
(related);
// 5. Send Transport trans = ();
("zhangsan", "888");
(message, ());
();
}
}
Pictures + attachments
/**
* 3. Email with picture resources and attachments
* @author
*
*/
public class App_3ImgAndAtta {
// Initialize parameters private static Properties prop;
// Sender private static InternetAddress sendMan = null;
static {
prop = new Properties();
("", "smtp"); // Specify the protocol ("", "localhost"); // Host ("", 25); // Port ("", "true"); // User password authentication ("", "true"); // Debug mode try {
sendMan = new InternetAddress("zhangsan@");
} catch (AddressException e) {
throw new RuntimeException(e);
}
}
@Test
public void testSend() throws Exception {
// 1. Create a mail session Session session = (prop);
// 2. Create a mail object MimeMessage message = new MimeMessage(session);
// 3. Set parameters: title, sender, recipient, sending time, content ("Email with pictures");
(sendMan);
(, new InternetAddress("lisi@"));
(new Date());
/*
* Email development with attachments (pictures)
*/
// Build a total mail block MimeMultipart mixed = new MimeMultipart("mixed");
// ---> Total mail is fast, set to the mail object (mixed);
// Left: (Text + Image Resource) MimeBodyPart left = new MimeBodyPart();
// Right: Attachment MimeBodyPart right = new MimeBodyPart();
// Set to the total mail block (left);
(right);
/******appendix********/
String attr_path = ().getResource("").getPath();
DataSource attr_ds = new FileDataSource(new File(attr_path));
DataHandler attr_handler = new DataHandler(attr_ds);
(attr_handler);
("");
/********************* Set email content: Multifunctional user email (related)*********************/
// 4.1 Build a multi-functional mail block MimeMultipart related = new MimeMultipart("related");
// ---> Set to the left side of the total email fast (related);
// 4.2 Build multi-functional mail block content = text on the left + picture resources on the right MimeBodyPart content = new MimeBodyPart();
MimeBodyPart resource = new MimeBodyPart();
// Set specific content: a. Resources (pictures) String filePath = App_3ImgAndAtta.("").getPath();
DataSource ds = new FileDataSource(new File(filePath));
DataHandler handler = new DataHandler(ds);
(handler);
(""); // Set the resource name and refer to the foreign key
// Set specific content: b. Text ("<img src='cid:'/> OK Haha！", "text/html;charset=UTF-8");
(content);
(resource);
// 5. Send Transport trans = ();
("zhangsan", "888");
(message, ());
();
}
}
The above is all about this article, I hope it will be helpful for everyone to learn Java programming.