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下面的一个例子,是从你的机器发送HTML电子邮件,并内嵌图像。在这里,我们使用JangoSMPT服务器通过该电子邮件被发送到我们的目标电子邮件地址。
要发送电子邮件,其中包含一个内嵌的图像,遵循的步骤是:获取一个Session
创建一个默认的MimeMessage对象,并设置发件人,收件人,主题(From, To, Subject )在消息中。
创建一个MimeMultipart的对象。
在我们的例子中,我们将在邮件的HTML部分和图像。因此,首先创建HTML内容,并在多部分对象将其设置为:// first part (the html)
BodyPart messageBodyPart = new MimeBodyPart();
String htmlText = ”
Hello
“;
messageBodyPart.setContent(htmlText, “text/html”);
// add it
multipart.addBodyPart(messageBodyPart);
接下来创建一个DataHandler的如下添加图像:// second part (the image)
messageBodyPart = new MimeBodyPart();
DataSource fds = new FileDataSource(
“/home/manisha/javamail-mini-logo.png”);
messageBodyPart.setDataHandler(new DataHandler(fds));
messageBodyPart.setHeader(“Content-ID”, “”);
接下来设置多重如下消息中:message.setContent(multipart);
发送使用传输对象的消息。
创建Java类
创建一个Java类文件SendInlineImagesInEmail,是其内容如下:package cn.sxt;
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
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 SendInlineImagesInEmail {
public static void main(String[] args) {
// Recipient’s email ID needs to be mentioned.
String to = “destinationemail@gmail.com”;
// Sender’s email ID needs to be mentioned
String from = “fromemail@gmail.com”;
final String username = “manishaspatil”;//change accordingly
final String password = “******”;//change accordingly
// Assuming you are sending email through relay.jangosmtp.net
String host = “relay.jangosmtp.net”;
Properties props = new Properties();
props.put(“mail.smtp.auth”, “true”);
props.put(“mail.smtp.starttls.enable”, “true”);
props.put(“mail.smtp.host”, host);
props.put(“mail.smtp.port”, “25”);
Session session = Session.getInstance(props,
new javax.mail.Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(username, password);
}
});
try {
// Create a default MimeMessage object.
Message message = new MimeMessage(session);
// Set From: header field of the header.
message.setFrom(new InternetAddress(from));
// Set To: header field of the header.
message.setRecipients(Message.RecipientType.TO,
InternetAddress.parse(to));
// Set Subject: header field
message.setSubject(“Testing Subject”);
// This mail has 2 part, the BODY and the embedded image
MimeMultipart multipart = new MimeMultipart(“related”);
// first part (the html)
BodyPart messageBodyPart = new MimeBodyPart();
String htmlText = ”
Hello
“;
messageBodyPart.setContent(htmlText, “text/html”);
// add it
multipart.addBodyPart(messageBodyPart);
// second part (the image)
messageBodyPart = new MimeBodyPart();
DataSource fds = new FileDataSource(
“/home/manisha/javamail-mini-logo.png”);
messageBodyPart.setDataHandler(new DataHandler(fds));
messageBodyPart.setHeader(“Content-ID”, “”);
// add image to the multipart
multipart.addBodyPart(messageBodyPart);
// put everything together
message.setContent(multipart);
// Send message
Transport.send(message);
System.out.println(“Sent message successfully….”);
} catch (MessagingException e) {
throw new RuntimeException(e);
}
}
}
由于我们使用的是由主机提供商JangoSMTP提供的SMTP服务器,我们需要验证用户名和密码。javax.mail.PasswordAuthentication类用于验证的密码。
编译并运行
现在,我们班是准备好了,让我们编译上面的类。我已经保存了类SendInlineImagesInEmail.java 目录: /home/manisha/JavaMailAPIExercise. 我们需要 javax.mail.jar 和 activation.jar 文件在 classpath 中。执行下面的命令从命令提示符编译类(两个罐子被放置在/home/manisha/ 目录下):javac -cp /home/manisha/activation.jar:/home/manisha/javax.mail.jar: SendInlineImagesInEmail.java
现在,这个类被编译,执行下面的命令来运行:java -cp /home/manisha/activation.jar:/home/manisha/javax.mail.jar: SendInlineImagesInEmail
验证输出
应该看到下面的消息命令控制台上:Sent message successfully….
因为我通过JangoSMTP发送邮件到我的Gmail地址,下面的邮件会在我的Gmail帐户的收件箱中接收:
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