Spring发送电子邮件

简介

Spring基于javax.mail封装了一套用于发送电子邮件的API，位于org.springframework.mail包下，下面将介绍下发送普通文本邮件和基于thymeleaf模版的邮件。

普通邮件

导入javax.mail依赖

<!-- ...... -->
<!-- 省略Spring依赖 -->
<dependency>
    <groupId>com.sun.mail</groupId>
    <artifactId>javax.mail</artifactId>
    <version>1.6.2</version>
</dependency>

Spring配置类

@PropertySource(value=\"classpath:mail.properties\")
@Configuration
public class SpringConfig {
    @Autowired
    Environment environment;

    /**
     * Spring邮件配置
     */
    @Bean
    public JavaMailSenderImpl javaMailSenderImpl(){
        JavaMailSenderImpl javaMailSenderImpl = new JavaMailSenderImpl();
        javaMailSenderImpl.setHost(environment.getProperty(\"mail.host\"));
        javaMailSenderImpl.setUsername(environment.getProperty(\"mail.username\"));
        javaMailSenderImpl.setPassword(environment.getProperty(\"mail.password\"));
        javaMailSenderImpl.setDefaultEncoding(environment.getProperty(\"mail.encoding\"));
        return javaMailSenderImpl;
    }
}

邮件配置：mail.properties

#QQ邮箱发送邮件服务器
mail.host=smtp.qq.com
#QQ邮箱账户名
mail.username=xxxxxx@qq.com
#QQ邮箱授权码，开启IMAP/SMTP服务时会生成
mail.password=lrorsapyffcwbegg
#邮件发送编码
mail.encoding=UTF-8

测试

@RunWith(SpringRunner.class)
@ContextConfiguration(classes=SpringConfig.class)
public class MailTest {
    @Autowired
    private JavaMailSenderImpl javaMailSenderImpl;

    @Test
    public void testSimpleMail() throws MessagingException{
        MimeMessage message = javaMailSenderImpl.createMimeMessage();

        //发送带附件和内联元素的邮件需要将第二个参数设置为true
        MimeMessageHelper helper = new MimeMessageHelper(message, true);

        //发送方邮箱，和配置文件中的mail.username要一致
        helper.setFrom(\"xxxxxx@qq.com\");

        //接收方
        helper.setTo(\"xxxxxx@qq.com\");

        //主题
        helper.setSubject(\"邮件测试\");

        //邮件内容
        helper.setText(\"<html><body><img src=\'cid:myphoto\'></body></html>\", true);

        //邮件内容内嵌的图片,addInline中的contentId要和邮件内容中的cid相对应
        FileSystemResource res = new FileSystemResource(new File(\"e:/yc/1.jpg\"));
        helper.addInline(\"myphoto\", res);

        //邮件附件
        FileSystemResource file = new FileSystemResource(new File(\"e:/yc/myphoto.zip\"));
        helper.addAttachment(\"myphoto.zip\", file);

        javaMailSenderImpl.send(message);
    }
}

Spring发送电子邮件

基于thymeleaf模版的邮件

导入thymeleaf-spring依赖

<dependency>
    <groupId>org.thymeleaf</groupId>
    <artifactId>thymeleaf-spring4</artifactId>
    <version>3.0.11.RELEASE</version>
</dependency>

Spring配置类中添加thymeleaf模板配置

  @Bean
    public TemplateEngine emailTemplateEngine() {
        SpringTemplateEngine templateEngine = new SpringTemplateEngine();
        ClassLoaderTemplateResolver templateResolver = new ClassLoaderTemplateResolver();
        templateResolver.setResolvablePatterns(Collections.singleton(\"*.html\"));
        templateResolver.setPrefix(\"/templates/\");
        templateResolver.setSuffix(\".html\");
        templateResolver.setTemplateMode(TemplateMode.HTML);
        templateResolver.setCharacterEncoding(\"UTF-8\");
        templateResolver.setCacheable(false);
        templateEngine.addTemplateResolver(templateResolver);
        return templateEngine;
    }

模版文件：/src/main/resources/templates/msg.html

<!DOCTYPE html>
<html xmlns:th=\"http://www.thymeleaf.org\">
  <head>
    <meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\" />
    <style type=\"text/css\">span{color:orange}</style>
  </head>
  <body>
    <p>
        您好， <span th:text=\"${name}\">xxx</span>，感谢您使用XXX服务，您正在进行邮箱验证，本次请求的验证码为：
    </p>
    <p><span th:text=\"${validCode}\">1111</span>(为了保障您帐号的安全性，请在1小时内完成验证。)</p>
    <p>
        XXX团队<br />
        2019年06月06日
    </p>
  </body>
</html>

测试

    @Autowired
    private TemplateEngine emailTemplateEngine;

    @Test
    public void testTemplateMail() throws MessagingException{
        MimeMessage message = javaMailSenderImpl.createMimeMessage();
        MimeMessageHelper helper = new MimeMessageHelper(message, true);
        helper.setFrom(\"xxxxxx@qq.com\");
        helper.setTo(\"xxxxxx@qq.com\");
        helper.setSubject(\"邮件测试\");

        //thymeleaf模版解析成String
        Context ctx = new Context();
        ctx.setVariable(\"name\", \"小姐姐\");
        ctx.setVariable(\"validCode\", \"88888888\");
        String htmlContent = emailTemplateEngine.process(\"msg.html\", ctx);
        helper.setText(htmlContent, true);

        javaMailSenderImpl.send(message);
    }

Spring发送电子邮件

简介

普通邮件

导入javax.mail依赖

Spring配置类

邮件配置：mail.properties

测试

基于thymeleaf模版的邮件

导入thymeleaf-spring依赖

Spring配置类中添加thymeleaf模板配置

模版文件：/src/main/resources/templates/msg.html

测试

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