下面的一個例子,是從你的機器傳送HTML電子郵件,並內嵌影象。在這裡,我們使用JangoSMPT伺服器通過該電子郵件被傳送到我們的目標電子郵件地址。
要傳送電子郵件,其中包含一個內嵌的影象,遵循的步驟是:
獲取一個Session
建立一個預設的MimeMessage物件,並設定發件人,收件人,主題(From, To, Subject )在訊息中。
建立一個MimeMultipart的物件。
在我們的例子中,我們將在郵件的HTML部分和影象。因此,首先建立HTML內容,並在多部分物件將其設定為:
// first part (the html) BodyPart messageBodyPart = new MimeBodyPart(); String htmlText = "<H1>Hello</H1><img src="cid:image">"; messageBodyPart.setContent(htmlText, "text/html"); // add it multipart.addBodyPart(messageBodyPart);
接下來建立一個DataHandler的如下新增影象:
// 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", "<image>");
接下來設定多重如下訊息中:
message.setContent(multipart);
傳送使用傳輸物件的訊息。
建立一個Java類檔案SendInlineImagesInEmail,是其內容如下:
package com.yiibai; 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 = "[email protected]"; // Sender's email ID needs to be mentioned String from = "[email protected]"; 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 = "<H1>Hello</H1><img src="cid:image">"; 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", "<image>"); // 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); } } }
由於我們使用的是由主機提供商JangoSMTP提供的SMTP伺服器,我們需要驗證使用者名和密碼。javax.mail.PasswordAuthentication類用於驗證的密碼。
現在,我們班是準備好了,讓我們編譯上面的類。我已經儲存了類SendInlineImagesInEmail.java 目錄: /home/manisha/JavaMailAPIExercise. 我們需要 javax.mail.jar 和 activation.jar 檔案在 classpath 中。執行下面的命令從命令提示字元編譯類(兩個罐子被放置在/home/manisha/ 目錄下):
javac -cp /home/manisha/activation.jar:/home/manisha/javax.mail.jar: SendInlineImagesInEmail.java
現在,這個類被編譯,執行下面的命令來執行:
java -cp /home/manisha/activation.jar:/home/manisha/javax.mail.jar: SendInlineImagesInEmail
應該看到下面的訊息命令控制台上:
Sent message successfully....
因為我通過JangoSMTP傳送郵件到我的Gmail地址,下面的郵件會在我的Gmail帳戶的收件箱中接收: