通过java配置进行Spring 4邮件配置

Question

是否有一些关于如何通过java配置配置MailSender的示例？我见过的所有示例都使用xml来创建所需的bean:

<bean id="mailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">
   <property name="host" value="mail.mycompany.com"/>
</bean>

<!-- this is a template message that we can pre-load with default state -->
 <bean id="templateMessage" class="org.springframework.mail.SimpleMailMessage">
 <property name="from" value="customerservice@mycompany.com"/>
 <property name="subject" value="Your order"/>
</bean>

Answer 1

您发布的代码(以及一些小的改进使其更易于配置)将转换为以下Java配置:

@Configuration 
public class MailConfig {

    @Value("${email.host}")
    private String host;

    @Value("${email.from}")
    private String from;

    @Value("${email.subject}")
    private String subject;

    @Bean
    public JavaMailSender javaMailService() {
        JavaMailSenderImpl javaMailSender = new JavaMailSenderImpl();
        javaMailSender.setHost(host);
        return javaMailSender;
    }

    @Bean
    public SimpleMailMessage simpleMailMessage() {
       SimpleMailMessage simpleMailMessage = new SimpleMailMessage();
       simpleMailMessage.setFrom(from);
       simpleMailMessage.setSubject(subject);
       return simpleMailMessage;
    }
}

您还应该知道Spring Boot(您没有提及是否使用)可以JavaMailSender为您自动配置.查看本文档的这一部分