Spring comes with a useful ‘org.springframework.mail.javamail.JavaMailSenderImpl‘ class to simplify the e-mail sending process via JavaMail API. Here’s a Maven build project to use Spring’s ‘JavaMailSenderImpl‘ to send an email via Gmail SMTP server.

1. Project dependency

Add the JavaMail and Spring’s dependency.

File : pom.xml

        
       
        4.0.0
         
       
        com.mkyong.common
         
       
        SpringExample
         
       
        jar
         
       
        1.0-SNAPSHOT
         
       
        SpringExample
         
       
        http://maven.apache.org
          
         	
          		
         
          Java.Net
           		
         
          http://download.java.net/maven/2/
           	
          
          
       
             
                      
         
          junit
                       
         
          junit
                       
         
          3.8.1
                      
         
          test
             
             
            
        	    
         
          javax.mail
         	    
         
          mail
         	    
         
          1.4.3
             
             
            
             	    
         
          org.springframework
         	    
         
          spring
         	    
         
          2.5.6
             
           
       
      

 

2. Spring’s Mail Sender

A Java class to send email with the Spring’s MailSender interface.

File : MailMail.java

package com.mkyong.common; import org.springframework.mail.MailSender;import org.springframework.mail.SimpleMailMessage; public class MailMail{	private MailSender mailSender; 	public void setMailSender(MailSender mailSender) {		this.mailSender = mailSender;	} 	public void sendMail(String from, String to, String subject, String msg) { 		SimpleMailMessage message = new SimpleMailMessage(); 		message.setFrom(from);		message.setTo(to);		message.setSubject(subject);		message.setText(msg);		mailSender.send(message);		}}

3. Bean configuration file

Configure the mailSender bean and specify the email details for the Gmail SMTP server.

Note

Gmail configuration details – 

File : Spring-Mail.xml

       
         
        	
         	
         	
         	
          	
         	   
                 	      
           
            true
                  	      
           
            true
                  	   
          	
         
         
        	
         
         
       

4. Run it

package com.mkyong.common; import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext; public class App {    public static void main( String[] args )    {    	ApplicationContext context =              new ClassPathXmlApplicationContext("Spring-Mail.xml");     	MailMail mm = (MailMail) context.getBean("mailMail");        mm.sendMail("from@no-spam.com",    		   "to@no-spam.com",    		   "Testing123",     		   "Testing only \n\n Hello Spring Email Sender");     }}

referenc from：http://www.mkyong.com/spring/spring-sending-e-mail-via-gmail-smtp-server-with-mailsender/