springboot 复杂邮件发送

以下是使用Spring Boot发送复杂邮件的步骤：

1.在pom.xml文件中添加spring-boot-starter-mail依赖项。

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-mail</artifactId>
    <version>2.2.6.RELEASE</version>
</dependency>

2.在application.properties文件中配置邮件服务器的相关信息。

spring.mail.host=smtp.example.com
spring.mail.port=587
spring.mail.username=yourusername
spring.mail.password=yourpassword
spring.mail.properties.mail.smtp.auth=true
spring.mail.properties.mail.smtp.starttls.enable=true

3.创建一个邮件服务类，该类将使用JavaMailSender发送邮件。

@Service
public class EmailService {

    @Autowired
    private JavaMailSender mailSender;

    public void sendEmailWithAttachment(String to, String subject, String text, String pathToAttachment) throws MessagingException {
        MimeMessage message = mailSender.createMimeMessage();

        MimeMessageHelper helper = new MimeMessageHelper(message, true);

        helper.setTo(to);
        helper.setSubject(subject);
        helper.setText(text);

        FileSystemResource file = new FileSystemResource(new File(pathToAttachment));
        helper.addAttachment("Attachment", file);

        mailSender.send(message);
    }
}

4.在控制器中使用邮件服务类发送邮件。

@RestController
public class EmailController {

    @Autowired
    private EmailService emailService;

    @PostMapping("/sendEmail")
    public ResponseEntity<String> sendEmail(@RequestParam String to, @RequestParam String subject, @RequestParam String text, @RequestParam String pathToAttachment) {
        try {
            emailService.sendEmailWithAttachment(to, subject, text, pathToAttachment);
            return ResponseEntity.ok("Email sent successfully.");
        } catch (MessagingException e) {
            return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body("Error sending email: " + e.getMessage());
        }
    }
}