邮件发送，在我们的日常开发中，也非常的多，Springboot也帮我们做了支持

• 邮件发送需要引入spring-boot-start-mail

• SpringBoot 自动配置MailSenderAutoConfiguration

• 定义MailProperties内容，配置在application.yml中

• 自动装配JavaMailSender

• 测试邮件发送

 

1、引入pom依赖

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

2、查看自动配置类：MailSenderAutoConfiguration

@Configuration(
    proxyBeanMethods = false
)
@ConditionalOnClass({MimeMessage.class, MimeType.class, MailSender.class})
@ConditionalOnMissingBean({MailSender.class})
@Conditional({MailSenderAutoConfiguration.MailSenderCondition.class})
@EnableConfigurationProperties({MailProperties.class})
@Import({MailSenderJndiConfiguration.class, MailSenderPropertiesConfiguration.class})
public class MailSenderAutoConfiguration {
    public MailSenderAutoConfiguration() {
    }

    static class MailSenderCondition extends AnyNestedCondition {
        MailSenderCondition() {
            super(ConfigurationPhase.PARSE_CONFIGURATION);
        }

        @ConditionalOnProperty(
            prefix = "spring.mail",
            name = {"jndi-name"}
        )
        static class JndiNameProperty {
            JndiNameProperty() {
            }
        }

        @ConditionalOnProperty(
            prefix = "spring.mail",
            name = {"host"}
        )
        static class HostProperty {
            HostProperty() {
            }
        }
    }
}

 

 然后我们去看下配置文件MailProperties 

public class MailProperties {
    private static final Charset DEFAULT_CHARSET;
    private String host;
    private Integer port;
    private String username;
    private String password;
    private String protocol = "smtp";
    private Charset defaultEncoding;
    private Map<String, String> properties;
    private String jndiName;
    .....
}

MailProperties 中就是我们能自己去定义的属性。

 

3、配置文件：

spring.mail.username=1763204261@qq.com
spring.mail.password=qq邮箱授权码
spring.mail.host=smtp.qq.com
# qq需要配置ssl
spring.mail.properties.mail.smtp.ssl.enable=true

获取授权码：在QQ邮箱中的设置->账户->开启pop3和smtp服务

4、Spring单元测试

    @Autowired
    JavaMailSenderImpl mailSender;

    @Test
    public void emailTest(){
        //邮件设置1：一个简单的邮件
        SimpleMailMessage message = new SimpleMailMessage();
        message.setSubject("通知-你收到邮件了");
        message.setText("神圣的时刻来了！");

        message.setTo("1763204261@qq.com");
        message.setFrom("1763204261@qq.com");
        mailSender.send(message);
    }

 

查看邮箱，邮件接收成功！

 

上面这个是比较简单的邮件发送，有时候会需要更复杂的，比如带入文件之类的：

此时需要用 MimeMessage 

 

　　@Autowired
    JavaMailSenderImpl mailSender;

    @Test
    public void contextLoads2() throws MessagingException {
        //邮件设置2：一个复杂的邮件
        MimeMessage mimeMessage = mailSender.createMimeMessage();
        MimeMessageHelper helper = new MimeMessageHelper(mimeMessage, true);

        helper.setSubject("通知-收到文件邮件");
        helper.setText("<b style='color:red'>又是神圣的时刻！</b>",true);

        //发送附件
        helper.addAttachment("1.jpg",new File("G:\\1.jpg"));

        helper.setTo("1763204261@qq.com");
        helper.setFrom("1763204261@qq.com");

        mailSender.send(mimeMessage);
    }

 

测试

 

 和预想的一样！