发布于 2016-10-29 08:44:57 | 169 次阅读 | 评论: 0 | 来源: 网络整理
下面是一个例子发送一个简单的电子邮件。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。 The setup is explained in the Environment Setup chapter.
要发送一个简单的电子邮件的步骤依次是:
获取一个Session
创建一个默认 MimeMessage 对象,并设置发件人,收件人,主题(From, To, Subject)在消息中。
将实际的消息为:
message.setText("your text goes here");
发送使用传输对象的消息。
创建一个Java类文件SendEmail,是其内容如下:
package com.yiibai;
import java.util.Properties;
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.MimeMessage;
public class SendEmail {
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");
// Get the Session object.
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");
// Now set the actual message
message.setText("Hello, this is sample for to check send " +
"email using JavaMailAPI ");
// 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 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。
现在,我们类是准备好了,让我们编译上面的类。已经保存了类SendEmail.java 到目录:/home/manisha/JavaMailAPIExercise。我们需要jar文件 javax.mail.jar andactivation.jar 在 classpath中。执行下面的命令从命令提示符编译类(jars被放置在/home/manisha/ 目录下):
javac -cp /home/manisha/activation.jar:/home/manisha/javax.mail.jar: SendEmail.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: SendEmail
你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: