标签：object 多个 etc ... 创建 包括 ast follow new
以下内容引用自http://wiki.jikexueyuan.com/project/java/sending-email.html：
用Java应用程序来发送一封电子邮件是足够简单的，但是开始时应该在机器上安装有JavaMail API和Java Activation Framework(JAF)。
下载并解压这些文件，在新创建的顶级目录中将找到许多应用程序的jar文件。需要CLASSPATH中添加mail.jar和activation.jar文件。（POM项目和Eclipse工程省略这一步）
一、发送一封简单的电子邮件
这是从机器中发送一封简单的电子邮件的例子。这里假设本地主机连接到了因特网并且能够发送一封电子邮件。
import java.util.*; import javax.mail.*; import javax.mail.internet.*; import javax.activation.*; public class SendEmail { public static void main(String[] args) { // Recipient‘s email ID needs to be mentioned. String to = "abcd@gmail.com"; // Sender‘s email ID needs to be mentioned String from = "web@gmail.com"; // Assuming you are sending email from localhost String host = "localhost";//This is SMTP Server,Ex:smtp.163.com // set email username String user = "user"; // set email password String password = "password"; // Get system properties Properties properties = System.getProperties(); // Setup mail server properties.setProperty("mail.smtp.host", host); properties.setProperty("mail.user", user); properties.setProperty("mail.password", password); // Get the default Session object. Session session = Session.getDefaultInstance(properties); try { // Create a default MimeMessage object. MimeMessage message = new MimeMessage(session); // Set From: header field of the header. message.setFrom(new InternetAddress(from)); // Set To: header field of the header. message.addRecipient(Message.RecipientType.TO, new InternetAddress(to)); // Set Subject: header field message.setSubject("This is the Subject Line!"); // Now set the actual message message.setText("This is actual message"); // Send message Transport.send(message); System.out.println("Sent message successfully...."); } catch (MessagingException mex) { mex.printStackTrace(); } } } //编译并运行这个程序来发送一封简单的电子邮件： $ java SendEmail Sent message successfully....
如果想要给多个收信者发送一封电子邮件，那么以下的方法将被用来发送给指定的多个电子邮件ID：
void addRecipients(Message.RecipientType type, Address[] addresses) throws MessagingException
这是参数的描述：
二、发送一封HTML电子邮件
这是从机器发送一封HTML电子邮件的例子。这里假设本地主机连接到了因特网并且能够发送一封电子邮件。
这个例子和前一个非常相似，除了在这用setContent()方法来设置第二个参数为"text/html"以指定 HTML 内容被包括在消息中的内容。
使用这个例子，可以发送任何HTML内容。
//File Name SendHTMLEmail.java import java.util.*; import javax.mail.*; import javax.mail.internet.*; import javax.activation.*; public class SendHTMLEmail { public static void main(String[] args) { // Recipient‘s email ID needs to be mentioned. String to = "abcd@gmail.com"; // Sender‘s email ID needs to be mentioned String from = "web@gmail.com"; // Assuming you are sending email from localhost String host = "localhost";//This is SMTP Server,Ex:smtp.163.com // set email username String user = "user"; // set email password String password = "password"; // Get system properties Properties properties = System.getProperties(); // Setup mail server properties.setProperty("mail.smtp.host", host); properties.setProperty("mail.user", user); properties.setProperty("mail.password", password); // Get the default Session object. Session session = Session.getDefaultInstance(properties); try { // Create a default MimeMessage object. MimeMessage message = new MimeMessage(session); // Set From: header field of the header. message.setFrom(new InternetAddress(from)); // Set To: header field of the header. message.addRecipient(Message.RecipientType.TO, new InternetAddress(to)); // Set Subject: header field message.setSubject("This is the Subject Line!"); // Send the actual HTML message, as big as you like message.setContent("<h1>This is actual message</h1>", "text/html"); // Send message Transport.send(message); System.out.println("Sent message successfully...."); } catch (MessagingException mex) { mex.printStackTrace(); } } } //编译并运行这个程序来发送一封 HTML 的电子邮件： $ java SendHTMLEmail Sent message successfully....
三、发送电子邮件中的附件
这是一个从机器中发送一封带有附件的电子邮件的例子。这里假设本地主机连接到了因特网并且能够发送一封电子邮件。
//File Name SendFileEmail.java import java.util.*; import javax.mail.*; import javax.mail.internet.*; import javax.activation.*; public class SendFileEmail { public static void main(String[] args) { // Recipient‘s email ID needs to be mentioned. String to = "abcd@gmail.com"; // Sender‘s email ID needs to be mentioned String from = "web@gmail.com"; // Assuming you are sending email from localhost String host = "localhost";// This is SMTP Server,Ex:smtp.163.com // set email username String user = "user"; // set email password String password = "password"; // Get system properties Properties properties = System.getProperties(); // Setup mail server properties.setProperty("mail.smtp.host", host); properties.setProperty("mail.user", user); properties.setProperty("mail.password", password); // Get the default Session object. Session session = Session.getDefaultInstance(properties); try { // Create a default MimeMessage object. MimeMessage message = new MimeMessage(session); // Set From: header field of the header. message.setFrom(new InternetAddress(from)); // Set To: header field of the header. message.addRecipient(Message.RecipientType.TO, new InternetAddress(to)); // Set Subject: header field message.setSubject("This is the Subject Line!"); // Create the message part BodyPart messageBodyPart = new MimeBodyPart(); // Fill the message messageBodyPart.setText("This is message body"); // Create a multipar message Multipart multipart = new MimeMultipart(); // Set text message part multipart.addBodyPart(messageBodyPart); // Part two is attachment messageBodyPart = new MimeBodyPart(); String filename = "file.txt"; DataSource source = new FileDataSource(filename); messageBodyPart.setDataHandler(new DataHandler(source)); messageBodyPart.setFileName(filename); multipart.addBodyPart(messageBodyPart); // Send the complete message parts message.setContent(multipart); // Send message Transport.send(message); System.out.println("Sent message successfully...."); } catch (MessagingException mex) { mex.printStackTrace(); } } } //编译并运行这个程序来发送一封 HTML 电子邮件： $ java SendFileEmail Sent message successfully....
四、用户身份认证部分
如果为了身份认证的目的需要给电子邮件服务器提供用户ID和密码，可以像这样设置这些属性：
props.setProperty("mail.user", "myuser");
props.setProperty("mail.password", "mypwd");
电子邮件发送机制的剩余部分和上述解释的一样。
测试工程：https://github.com/easonjim/5_java_example/tree/master/javabasicstest/test27
标签：object 多个 etc ... 创建 包括 ast follow new
原文地址：http://www.cnblogs.com/EasonJim/p/6939400.html
