Springboot sending mail

Preparation 1. Introducing Dependencies

        <!-- 发送邮件依赖 -->        <dependency>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-starter-mail</artifactId>        </dependency>

2. Configure the necessary properties in APPLICATION.YML

PS: here because the use of QQ mailbox, and QQ Mailbox Software Transceiver Service is closed by default, need to manually open
Access to email account settings

spring:    mail:        host: smtp.qq.com        username: 邮箱用户名        password: 密码或验证码        properties:          mail:            smtp:              auth: true              starttls:                enable: true                required: true

3. Send a simple message

    @Autowired    private JavaMailSender mailSender;    @Test    public void sendSimpleMail() throws Exception {        SimpleMailMessage message = new SimpleMailMessage();        message.setFrom("邮件发送方");        message.setTo("邮件接收方");        message.setSubject("主题");        message.setText("正文");        mailSender.send(message);    }

4. Send template mail (using thymeleaf) 1. Introducing Thymeleaf Dependencies

<!-- 引入thymeleaf模块 -->        <dependency>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-starter-thymeleaf</artifactId>            <version>2.0.0.RELEASE</version>        </dependency>

2. Configure Thymeleaf

# thymeleaf 参数配置spring:  thymeleaf:    cache: true    prefix: classpath:/templates/    suffix: .html    encoding: UTF-8    servlet:      content-type: text/html    check-template-location: true    enabled: true    mode: HTML5

3. Writing a template

4. Writing the Sending method

    @Autowired    private TemplateEngine templateEngine;    @Autowired    private JavaMailSender mailSender;        public void sendTemplateMail() throws  Exception{        MimeMessage message = mailSender.createMimeMessage();        MimeMessageHelper helper = new MimeMessageHelper(message);        helper.setFrom("发送方");        helper.setTo("接收方");        helper.setSubject("主题");        Context context = new Context();        context.setVariable("username","name");        String emailContent = templateEngine.process("template",context);        helper.setText(emailContent,true);        mailSender.send(message);    }

Springboot sending mail