Eclipse中的Java简单电子邮件程序 [英] Java Simple Email Program in Eclipse

问题描述

我想制作一个简单的程序，您可以从命令行发送电子邮件。我发现这个教程， http://www.tutorialspoint.com/java/java_sending_email。 htm '，但是下载没有。那么在哪里可以获得JavaMail API和Java Activation Framework（JAF），我将如何把它放在我的课程路径中。

基本上我正在寻找一个人来分解它，告诉我如何制作电子邮件程序。

我使用Eclipse luna。

解决方案

请看这个例子。这个例子，简单地发送一个附件作为一个邮件。附件 quiz.txt 的内容如下：

 什么是印度首都/新德里
泰姬陵在哪里？/阿格拉
  

这里是 SendMailExample.java 文件：

  import java.util。* ; 
 import javax.activation。*; 
 import javax.mail。*; 
 import javax.mail.internet。*; 
 import javax.mail.Authenticator; 
 import javax.mail.PasswordAuthentication; 
 
 public class SendMailExample {
 
 private String from; 
 private String to; 
 private String subject; 
 private String messageBody; 
 private String fileName; 
 private String host; 
 
私有属性; 
 
私人MimeMessage消息; 
 private BodyPart messageBodyPart; 
 private Multipart multipart; 
 
私有身份验证器; 
 
 public SendMailExample（）{
 from =[e-mail]; 
 to =[e-mail]; 
 subject =主题测试; 
 messageBody =< html>< body>< h1> HAVE FAITH，AND STAY+ 
CALM :-)我和你在一起，OKAY： - ）< / h1> ; /体>< / HTML>中; 
 fileName =quiz.txt; 
 host =smtp.gmail.com; 
 
 authentator = new SMTPAuthenticator（）; 
 properties = System.getProperties（）; 
 properties.put（mail.smtp.host，主机）; 
 properties.put（mail.smtp.starttls.enable，true）; 
 properties.put（mail.smtp.port，587）; 
 properties.put（mail.smtp.auth，true）; 
 
 
 private void sendMail（String from，String to，
 String subject，String messageBody，String fileName）{
 try {
 Session session = Session.getDefaultInstance（properties，authenticator）; 
 message = new MimeMessage（session）; 
 message.setFrom（new InternetAddress（from））; 
 message.addRecipient（Message.RecipientType.TO，
 new InternetAddress（to））; 
 message.setSubject（subject）; 
 
 multipart = new MimeMultipart（）; 
 messageBodyPart = new MimeBodyPart（）; 
 messageBodyPart.setContent（messageBody，text / html）; 
 multipart.addBodyPart（messageBodyPart）; 
 
 messageBodyPart = new MimeBodyPart（）; 
 DataSource source = new FileDataSource（fileName）; 
 messageBodyPart.setDataHandler（new DataHandler（source））; 
 messageBodyPart.setFileName（fileName）; 
 multipart.addBodyPart（messageBodyPart）; 
 
 message.setContent（multipart）; 
 
 Transport.send（message）; 
 System.out.println（Message sending successfully ....）; 
} catch（Exception me）{
 me.printStackTrace（）; 
} 
} 
 
 private void performTask（）{
 sendMail（from，to，subject，messageBody，fileName）; 
} 
 
 public static void main（String [] args）{
 new SendMailExample（）.performTask（）; 
} 
} 
 
 / ** 
 * SimpleAuthenticator用于在SMTP服务器需要时执行简单身份验证
 *。 
 * / 
 
 class SMTPAuthenticator extends Authenticator {
 
 private static final String SMTP_AUTH_USER =[e-mail]; 
 private static final String SMTP_AUTH_PASSWORD =somepassword; 
 
 public PasswordAuthentication getPasswordAuthentication（）{
 String username = SMTP_AUTH_USER; 
 String password = SMTP_AUTH_PASSWORD; 
 
返回新的PasswordAuthentication（用户名，密码）; 
} 
} 
  

您只需要这个 mail.jar 文件。

要编译，只需写入（ mail.jar 存在于C：\install\java\mail\mail.jar`位置）：

  javac -classpath。; C：\install\java\mail\mail.jar SendMailExample.java 
  
 
 
 java -classpath。; C：\\ \\ install\java\mail\mail.jar SendMailExample 
 
 
 
这样做： - ）
 
I want to make a simple program where you can send email from the Command Line. I found this tutorial, ' http://www.tutorialspoint.com/java/java_sending_email.htm ', however the downloads don't. So where can I get JavaMail API and Java Activation Framework (JAF) and how would i put it in my class path.

Basically Im looking for someone to break it down and show me how I could make an email program.

Im using Eclipse luna.
解决方案
Do have a look at this example. This example, simply sends one attachment as a mail. The contents of attachment quiz.txt are as follows:
What is the Capital of India?/New Delhi
Where is the Taj Mahal?/Agra
Here is the SendMailExample.java file:
import java.util.*;
import javax.activation.*;
import javax.mail.*;
import javax.mail.internet.*;
import javax.mail.Authenticator;
import javax.mail.PasswordAuthentication;

public class SendMailExample {

    private String from;
    private String to;
    private String subject;
    private String messageBody;
    private String fileName;
    private String host;

    private Properties properties;

    private MimeMessage message;
    private BodyPart messageBodyPart;
    private Multipart multipart;

    private Authenticator authenticator;

    public SendMailExample () {
        from = "[e-mail]";
        to = "[e-mail]";
        subject = "Subject Testing";
        messageBody = "<html><body><h1>HAVE FAITH, AND STAY" +
                    " CALM :-) I AM WITH YOU, OKAY :-)</h1></body></html>";
        fileName = "quiz.txt";
        host = "smtp.gmail.com";

        authenticator = new SMTPAuthenticator ();
        properties = System.getProperties ();
        properties.put ( "mail.smtp.host", host );
        properties.put ( "mail.smtp.starttls.enable", "true" );
        properties.put ( "mail.smtp.port", "587" );
        properties.put ( "mail.smtp.auth", "true" );
    }

    private void sendMail ( String from, String to,
                    String subject, String messageBody, String fileName ) {
        try {
            Session session = Session.getDefaultInstance ( properties, authenticator );
            message = new MimeMessage ( session );
            message.setFrom ( new InternetAddress ( from ) );
            message.addRecipient ( Message.RecipientType.TO,
                                new InternetAddress ( to ) );
            message.setSubject ( subject );

            multipart = new MimeMultipart ();
            messageBodyPart = new MimeBodyPart ();
            messageBodyPart.setContent ( messageBody, "text/html" );
            multipart.addBodyPart ( messageBodyPart );

            messageBodyPart = new MimeBodyPart ();
            DataSource source = new FileDataSource ( fileName );
            messageBodyPart.setDataHandler ( new DataHandler ( source ) );
            messageBodyPart.setFileName ( fileName );
            multipart.addBodyPart ( messageBodyPart );

            message.setContent ( multipart );

            Transport.send ( message );
            System.out.println ( "Message send successfully...." );
        } catch ( Exception me ) {
            me.printStackTrace ();
        }
    } 

    private void performTask () {
        sendMail ( from, to, subject, messageBody, fileName );
    }

    public static void main ( String[] args ) {
        new SendMailExample ().performTask ();
    }
}

/**
  * SimpleAuthenticator is used to do simple authentication
  * when the SMTP server requires it.
  */

class SMTPAuthenticator extends Authenticator {

    private static final String SMTP_AUTH_USER = "[e-mail]";
    private static final String SMTP_AUTH_PASSWORD = "somepassword";

    public PasswordAuthentication getPasswordAuthentication () {
        String username = SMTP_AUTH_USER;
        String password = SMTP_AUTH_PASSWORD;

        return new PasswordAuthentication( username,  password );
    }
}
You simply needed this mail.jar file.

To compile, simply write ( mail.jar is present at C:\install\java\mail\mail.jar` location ):
javac -classpath .;C:\install\java\mail\mail.jar SendMailExample.java
To run, write:

java -classpath .;C:\install\java\mail\mail.jar SendMailExample

THis will do :-)

                        
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