Send Spring mail and send spring mail

Send Spring mail and send spring mail
Preface:In the past, emails were directly sent using Java's built-in email tools. Now Spring has helped us encapsulate them, javaMailSender, a simpler email sending tool, is provided. We will not talk about setting the email server here. Simply go to QQ mail to set it. The following describes the main steps: step 1. Add Maven dependencies for sending emails

<! -- Spring mail --> <dependency> <groupId> org. springframework </groupId> <artifactId> spring-context-support </artifactId> <version> 4.3.2.RELEASE </version> </dependency> <groupId> javax. mail </groupId> <artifactId> mail </artifactId> <version> 1.4.7 </version> </dependency>

 

Step 2, add the relevant Spring configuration, create a spring-mail.xml (if it is Spring-Boot please ignore), the content is as follows:

<? Xml version = "1.0" encoding = "UTF-8"?> <Beans xmlns = "http://www.springframework.org/schema/beans" xmlns: xsi = "http://www.w3.org/2001/XMLSchema-instance" xmlns: context = "http://www.springframework.org/schema/context" xsi: schemaLocation = "http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-co Ntext. xsd "> <! -- Spring JavaMailSender --> <bean class = "org. springframework. mail. javamail. JavaMailSenderImpl"> <property name = "host" value = "smtp.qq.com"> </property> <! -- Maybe you can use port 465, the default value of 25 is not suitable --> <property name = "port" value = "587"/> <property name = "protocol" value = "smtp"/> <property name =" username "value =" ****** @ qq.com "> </property> <! -- Here, after you send the SMTP activation text message in the QQ mailbox, authorization code obtained --> <property name = "password" value = "******"> </property> <property name = "defaultEncoding" value = "UTF-8 "/> <property name = "javaMailProperties"> <props> <prop key = "mail. smtp. auth "> true </prop> <prop key =" mail. smtp. timeout "> 25000 </prop> </props> </property> </bean> </beans>

 

Step 3: Create a mail sending Tool

/*** Spring-based JavaMailSender tool for sending emails * @ author simon **/@ Componentpublic class EmailSender {@ Autowired private JavaMailSender javaMailSender; private static EmailSender emailSender; @ PostConstruct public void init () {emailSender = this; emailSender. javaMailSender = this. javaMailSender;}/*** send a simple text email * @ param sendTo recipient group * @ param subject topic * @ param content text content */public static void sendSimpleMessage (String sendFrom, string [] sendTo, String subject, String textcontent) {SimpleMailMessage mail = new SimpleMailMessage (); mail. setFrom (sendFrom); mail. setTo (sendTo); mail. setSubject (subject); mail. setText (textcontent); // send emailSender. javaMailSender. send (mail );} /*** send an email in HTML format * @ param sendFrom * @ param sendTo recipient group * @ param subject topic * @ param htmlContent HTML content * @ throws Exception */public static void sendHtmlMessage (String sendFrom, string [] sendTo, String subject, String htmlContent) throws Exception {MimeMessage mimeMessage = emailSender. javaMailSender. createMimeMessage (); MimeMessageHelper mimeMessageHelper = new MimeMessageHelper (mimeMessage); mimeMessageHelper. setFrom (sendFrom); mimeMessageHelper. setTo (sendTo); mimeMessageHelper. setSubject (subject); // true indicates starting an HTML-format email mimeMessageHelper. setText (htmlContent, true); // send the email emailSender. javaMailSender. send (mimeMessage );}}

 

Step 4: create a unit test and send an email

/*** Mail sending test class ** @ author simon **/@ RunWith (SpringJUnit4ClassRunner. class) @ ContextConfiguration ("classpath: applicationContext. xml ") public class EmailSenderTest {@ Test public void testSend () throws Exception {String sendFrom =" 1317492210@qq.com "; String [] sendTo = {" zhaosheng@hitencent.com "}; string subject = "HTML mail sent by JavaMailSender in Spring"; StringBuilder htmlContent = new StringBuilder (). app End ("
 
OK, all the steps here are over. Isn't it easier and easier than Java Mail? Please try it on your own!