使用java应用程序发送电子邮件

Question

为什么此代码不能发送电子邮件？没有错误，它只是不发送。

package tips.mails; 

import java.util.Properties; 


import javax.mail.Message; 
import javax.mail.MessagingException; 
import javax.mail.Session; 
import javax.mail.Transport; 
import javax.mail.Message.RecipientType; 
import javax.mail.internet.AddressException; 
import javax.mail.internet.InternetAddress; 
import javax.mail.internet.MimeMessage; 



public class SendMail { 
private String from; 
private String to; 
private String subject; 
private String text; 

public SendMail(String from, String to, String subject, String text){ 
    this.from = from; 
    this.to = to; 
    this.subject = subject; 
    this.text = text; 
} 

public void send(){ 

    Properties props = new Properties(); 
    props.put("mail.smtp.host", "smtp.gmail.com"); 
    props.put("mail.smtp.port", "465"); 

    Session mailSession = Session.getDefaultInstance(props); 
    Message simpleMessage = new MimeMessage(mailSession); 

    InternetAddress fromAddress = null; 
    InternetAddress toAddress = null; 
    try { 
     fromAddress = new InternetAddress(from); 
     toAddress = new InternetAddress(to); 
    } catch (AddressException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } 

    try { 
     simpleMessage.setFrom(fromAddress); 
     simpleMessage.setRecipient(RecipientType.TO, toAddress); 
     simpleMessage.setSubject(subject); 
     simpleMessage.setText(text); 

     Transport.send(simpleMessage); 
    } catch (MessagingException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } 
} 

    public static void main(String args[]) 
    { 
     new SendMail("source", "dist","Subject", "Test Message!!!"); 
    } 
} 

Answer 1

您实例化一个SendMail对象，并对它做任何事情。也许你也应该执行你的send()方法。

Answer 2

你忘了打电话给发送。试试这个

new SendMail("source", "dist","Subject", "Test Message!!!").send();