email service by spring

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First, need a dependency.

You can add dependency using mouse right click to pom.xml  then typing mail.

Or this way.

Add this code.

1.     <!-- java mail -->
2.     <dependency>
3.         <groupId>javax.mail</groupId>
4.         <artifactId>mail</artifactId>
5.         <version>1.4</version>
6.     </dependency>

Second, add package folder and java file Email.java, EmailSender.java.

Email.java is setter and getter, EmailSender.java is sender.

This is Email.java

1. public class Email {
3.     private String subject;
4.     private String content;
5.     private String receiver;
6.      
7.     public String getReceiver() {
8.         return receiver;
9.     }
10.     public void setReceiver(String receiver) {
11.         this.receiver = receiver;
12.     }
14.     public String getSubject() {
15.         return subject;
16.     }
17.     public void setSubject(String subject) {
18.         this.subject = subject;
19.     }
20.     public String getContent() {
21.         return content;
22.     }
23.     public void setContent(String content) {
24.         this.content = content;
25.     }
26. }

Email.java consist of subject, content and receiver.

This is EmailSender.java

1. import javax.mail.MessagingException;
2. import javax.mail.internet.InternetAddress;
3. import javax.mail.internet.MimeMessage;
5. import org.springframework.beans.factory.annotation.Autowired;
6. import org.springframework.mail.MailException;
7. import org.springframework.mail.javamail.JavaMailSender;
8.    
9.     public class EmailSender  {
10.          
11.         @Autowired
12.         protected JavaMailSender  mailSender;
13.         public void SendEmail(Email email) throws Exception {
14.              
15.             MimeMessage msg = mailSender.createMimeMessage();
16.             try {
17.                 msg.setSubject(email.getSubject());
18.                 msg.setText(email.getContent());
19.                 msg.setRecipients(MimeMessage.RecipientType.TO , InternetAddress.parse(email.getReceiver()));
20.                
21.             }catch(MessagingException e) {
22.                 System.out.println("MessagingException");
23.                 e.printStackTrace();
24.             }
25.             try {
26.                 mailSender.send(msg);
27.             }catch(MailException e) {
28.                 System.out.println("MailException발생");
29.                 e.printStackTrace();
30.             }
31.         }
32. }

EmailSender getting content, receiver and subject from Email.java then Sending using JavaMailSender.

This is Controller code.

1.    @Autowired
2.    private EmailSender emailSender;
3.    @Autowired
4.    private Email email;
5.     @RequestMapping("/sendpw.do")
6.     public ModelAndView sendEmailAction (@RequestParam Map<String, Object> paramMap, ModelMap model) throws Exception {
7.         ModelAndView mav;
8.         String id=(String) paramMap.get("id");
9.         String e_mail=(String) paramMap.get("email");
10.         String pw=mainService.getPw(paramMap);
11.         System.out.println(pw);
12.         if(pw!=null) {
13.             email.setContent("비밀번호는 "+pw+" 입니다.");
14.             email.setReceiver(e_mail);
15.             email.setSubject(id+"님 비밀번호 찾기 메일입니다.");
16.             emailSender.SendEmail(email);
17.             mav= new ModelAndView("redirect:/login.do");
18.             return mav;
19.         }else {
20.             mav=new ModelAndView("redirect:/logout.do");
21.             return mav;
22.         }
23.     }

This code getting id and e-mail from jsp.

And check the information. 

If id and e-mail is right getting password from database.

This is bean setting.

1. <!-- gmail -->
2.     <bean id="mailSender" class ="org.springframework.mail.javamail.JavaMailSenderImpl" >
3.         <property name="host" value="smtp.gmail.com" />
4.         <property name="port" value="587" />
5.         <property name="defaultEncoding" value="utf-8"/>
6.         <property name="username" value="your id@gmail.com" />
7.         <property name="password" value="your password" />
8.        
9.         <property name="javaMailProperties">
10.             <props>
11.                 <prop key="mail.smtp.starttls.enable">true</prop>
12.                 <prop key="mail.smtp.auth">true</prop>
13.                
14.                
15.             </props>
16.         </property>
17.        
18.     </bean>
19.     <bean id="email" class="spring.board.email.Email">
20.     </bean>
21.     <bean id="emailSender" class="spring.board.email.EmailSender">
22.     </bean>

Line 2~18 : mailSender is bean for JavaMailSender.

The bean consist of protocol, port, username and password.

Detail setting for Gmail is here .

Line 19~22 is bean for  email and emailSender.

Running program

Redbox is link searching password.

If you click to link.

You can typing id and e-mail then click to button.

Go to my mailbox.

Arrived mail.

You can see your password.

If e-mail is wrong you can see this.