SpringBoot是用来简化新Spring应用的初始搭建以及开发过程的，我们在使用SpringBoot的时候，想要实现FreeMarker模板通过SpringBoot编译发送邮件，我们应该如何进行操作呢？下面给大家分享一下。
一、添加相关依赖
1、使用Maven，在pom.xml添加如下依赖：
<!-- 邮件所需依赖 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-mail</artifactId>
</dependency>
<!-- Spring Boot Freemarker 依赖，发送HTML格式的邮件的方式 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-freemarker</artifactId>
</dependency>
2、使用Gradle，则在 build.gradle 添加依赖：
dependencies {
implementation 'org.springframework.boot:spring-boot-starter-freemarker'
implementation 'org.springframework.boot:spring-boot-starter-mail'
//... 其他依赖库
}
二、application.yml 配置
#其他配置信息
spring:
#其他配置信息
freemarker:
suffix: .ftl
template-loader-path:
- classpath:/templates
cache: false
charset: UTF-8
content-type: text/html
mail:
host: smtp.163.com
username: #添加您自己163邮箱
password: #授权第三方登录的授权码 不是邮箱密码哦 别弄混了
protocol: smtp
properties.mail.smtp.auth: true
properties.mail.smtp.port: 994 #465或者994
#properties.mail.display.sendmail: Javen
#properties.mail.display.sendname: Spring Boot Guide Email
properties.mail.smtp.starttls.enable: true
properties.mail.smtp.starttls.required: true
properties.mail.smtp.ssl.enable: true
default-encoding: utf-8
from: #添加您自己163邮箱
三、编写MailService服务
@Service
public class MailServiceImpl implements MailService {
//邮件的发送者
@Value("${spring.mail.username}")
private String from;
//注入MailSender
@Autowired
private JavaMailSender mailSender;
//发送邮件的模板引擎
@Autowired
private FreeMarkerConfigurer configurer;
/**
* @param params 发送邮件的主题对象 object
* @param title 邮件标题
* @param templateName 模板名称
*/
@Override
public void sendMessageMail(Object params, String title, String templateName) {
try {
MimeMessage mimeMessage = mailSender.createMimeMessage();
MimeMessageHelper helper = new MimeMessageHelper(mimeMessage, true);
helper.setFrom(from);
helper.setTo(InternetAddress.parse("xxxxx@163.com"));//发送给谁
helper.setSubject("【" + title + "-" + LocalDate.now() + " " + LocalTime.now().withNano(0) + "】");//邮件标题
Map<String, Object> model = new HashMap<>();
model.put("params", params);
try {
Template template = configurer.getConfiguration().getTemplate(templateName);
try {
String text = FreeMarkerTemplateUtils.processTemplateIntoString(template, model);
helper.setText(text, true);
mailSender.send(mimeMessage);
} catch (TemplateException e) {
e.printStackTrace();
}
} catch (IOException e) {
e.printStackTrace();
}
} catch (MessagingException e) {
e.printStackTrace();
}
}
}四、定义发送邮件对象
发送内容为object，我这里演示一个对象，通过模板渲染方式接收内容
@Data
public class Message {
private String messageCode;
private String messageStatus;
private String cause;
}
五、在项目templates目录新建个message.ftl文件
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>消息通知</title>
</head>
<style type="text/css">
table {
font-family: "Trebuchet MS", Arial, Helvetica, sans-serif;
width: 100%;
border-collapse: collapse;
}
td, th {
font-size: 1em;
border: 1px solid #5B4A42;
padding: 3px 7px 2px 7px;
}
th {
font-size: 1.1em;
text-align: center;
padding-top: 5px;
padding-bottom: 4px;
background-color: #24A9E1;
color: #ffffff;
}
</style>
<body>
<div>
<h2>邮件消息通知</h2>
<table id="customers">
<tr>
<th>MessageCode</th>
<th>MessageStatus</th>
<th>Cause</th>
</tr>
<tr>
<td>${(params.messageCode)!""}</td>
<td>${(params.messageStatus)!""}</td>
<td>${(params.cause)!""}</td>
</tr>
</table>
</div>
</body>
</html>六、测试邮件发送
新建controller类
@RestController
public class MailController {
@Autowired
private MailService mailService;
@RequestMapping(value = "/sendMessage", method = RequestMethod.GET)
public void sendMailMessage() {
Message message = new Message();
message.setMessageCode("MissingParameter");
message.setMessageStatus("Failed");
message.setCause("缺少参数,请确认");
mailService.sendMessageMail(message, "测试消息通知", "message.ftl");
}
}启动服务访问 http://localhost:8080/sendMessage，最后查看邮箱。
