SpringBoot如何使用FreeMarker模块引擎发送邮件？

发布时间：2020-06-23 14:57:38 阅读：264 作者：清晨栏目：编程语言

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不懂SpringBoot如何使用FreeMarker模块引擎发送邮件？？其实想解决这个问题也不难，下面让小编带着大家一起学习怎么去解决，希望大家阅读完这篇文章后大所收获。

通过spirngboot 自带的mail服务及FreeMarker模板引擎，发送邮

添加依赖

<dependency>
 <groupId>org.springframework.boot</groupId>
 <artifactId>spring-boot-starter-freemarker</artifactId>
</dependency>
<dependency>
 <groupId>org.springframework.boot</groupId>
 <artifactId>spring-boot-starter-mail</artifactId>
</dependency>
<dependency>
 <groupId>org.springframework.boot</groupId>
 <artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!--消除冗余代码使用-->
<dependency>
 <groupId>org.projectlombok</groupId>
 <artifactId>lombok</artifactId>
 <optional>true</optional>
</dependency>

在application.yml文件中配置Mail信息

spring:
 mail:
 port: 25
 username: ${username}
 password: ${password}
 protocol: smtp
 default-encoding: utf-8
 host: ${host}

编写MailService服务

@Service
public class MailServiceImpl implements MailService {

 //邮件的发送者
 @Value("${spring.mail.username}")
 private String from;

 //注入MailSender
 @Autowired
 private JavaMailSender mailSender;

 //发送邮件的模板引擎
 @Autowired
 private FreeMarkerConfigurer configurer;

 /**
 * @param params 发送邮件的主题对象 object
 * @param title 邮件标题
 * @param templateName 模板名称
 */
 @Override
 public void sendMessageMail(Object params, String title, String templateName) {

 try {

 MimeMessage mimeMessage = mailSender.createMimeMessage();
 MimeMessageHelper helper = new MimeMessageHelper(mimeMessage, true);
 helper.setFrom(from);
 helper.setTo(InternetAddress.parse("xxxxx@163.com"));//发送给谁
 helper.setSubject("【" + title + "-" + LocalDate.now() + " " + LocalTime.now().withNano(0) + "】");//邮件标题

 Map<String, Object> model = new HashMap<>();
 model.put("params", params);
 try {
 Template template = configurer.getConfiguration().getTemplate(templateName);
 try {
 String text = FreeMarkerTemplateUtils.processTemplateIntoString(template, model);

 helper.setText(text, true);
 mailSender.send(mimeMessage);
 } catch (TemplateException e) {
 e.printStackTrace();
 }
 } catch (IOException e) {
 e.printStackTrace();
 }
 } catch (MessagingException e) {
 e.printStackTrace();
 }
 }
}

定义发送邮件对象

发送内容为object，我这里演示一个对象，通过模板渲染方式接收内容

@Data
public class Message {

 private String messageCode;
 private String messageStatus;
 private String cause;

}

在项目templates目录新建个message.ftl文件

<!DOCTYPE html>
<html>
<head>
 <meta charset="UTF-8">
 <title>消息通知</title>
</head>

<style type="text/css">
 table {
 font-family: "Trebuchet MS", Arial, Helvetica, sans-serif;
 width: 100%;
 border-collapse: collapse;
 }

 td, th {
 font-size: 1em;
 border: 1px solid #5B4A42;
 padding: 3px 7px 2px 7px;
 }

 th {
 font-size: 1.1em;
 text-align: center;
 padding-top: 5px;
 padding-bottom: 4px;
 background-color: #24A9E1;
 color: #ffffff;
 }
</style>
<body>
<div>
 <h3>邮件消息通知</h3>
 <table id="customers">
 <tr>
 <th>MessageCode</th>
 <th>MessageStatus</th>
 <th>Cause</th>
 </tr>
 <tr>
 <td>${(params.messageCode)!""}</td>
 <td>${(params.messageStatus)!""}</td>
 <td>${(params.cause)!""}</td>
 </tr>
 </table>
</div>
</body>
</html>

测试邮件发送