java - 无法自动连线javamailSender

当自动装配javamailsender时出现以下错误：


  字段javaMailSender中
  com.frs.services.MailService.impl.MailServiceImpl需要一个Bean
  键入“ org.springframework.mail.javamail.JavaMailSender”无法
  被发现。


注入点具有以下注释：

@org.springframework.beans.factory.annotation.Autowired(required=true)

    @Autowired
    private JavaMailSender javaMailSender;

    @Override
    @Transactional
    public void addMail(MailServiceDTO mailServiceDTO) throws MessagingException {
        logger.debug(LogMarker.ENTRY, "Send Email with Subject  Message  to Email Addresses ");

        Properties props = ((JavaMailSenderImpl) javaMailSender).getJavaMailProperties();
        props.put("mail.transport.protocol", "smtp");
        props.put("mail.smtp.auth", "true");
        props.put("mail.smtp.starttls.enable", "true");
        props.put("mail.debug", "true");

        MimeMessage mimeMessage = javaMailSender.createMimeMessage();

        MimeMessageHelper message = new MimeMessageHelper(mimeMessage, true);

        message.setFrom(mailServiceDTO.getEmailFrom());
        message.setTo(mailServiceDTO.getEmailTo());
        message.setSubject("Text");
        javaMailSender.send(mimeMessage);

使用的依赖项：

    <!-- Mail Dependencies -->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-mail</artifactId>
            </dependency>

最佳答案

您需要在配置文件中提供邮件属性

# configuration email
spring.mail.host=smtp.gmail.com
spring.mail.port=587
spring.mail.username=email
spring.mail.password=password
spring.mail.properties.mail.smtp.auth=true
spring.mail.properties.mail.smtp.starttls.enable=true
spring.mail.properties.mail.smtp.starttls.required=true

否则您将需要在配置文件中拥有自己的bean

    @Bean
    public JavaMailSenderImpl mailSender() {
        JavaMailSenderImpl javaMailSender = new JavaMailSenderImpl();

        javaMailSender.setProtocol("SMTP");
        javaMailSender.setHost("smtp.gmail.com");
        javaMailSender.setPort(587);

        return javaMailSender;
    }