SpringBoot发送邮件(使用thymeleaf模板)

1. 构建环境

pom.xml中添加以下依赖:

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

application.properties中添加以下依赖:

spring.mail.host=smtp.gmail.com #以Gmail为例
spring.mail.port=587
spring.mail.username=邮箱用户名
spring.mail.password=邮箱密码
spring.mail.properties.mail.smtp.auth=true
spring.mail.properties.mail.smtp.starttls.enable=true

此处可能会遇到Gmail的权限认证问题,需要开启权限许可。

至此,环境构建完毕。

2. 写一个工具类

写一个用于发送邮件的工具类:

@Component
public class EmailTool {
    @Autowired
    private JavaMailSender javaMailSender;

    @Value("${spring.mail.username}")
    private String senderMailAddress;

    @Autowired
    private TemplateEngine templateEngine;

    public void sendSimpleMail(Map<String, Object> valueMap){
        MimeMessage mimeMessage = null;
        try {
            mimeMessage = javaMailSender.createMimeMessage();
            MimeMessageHelper helper = new MimeMessageHelper(mimeMessage, true);
            // 设置发件人邮箱
            helper.setFrom(senderMailAddress);
            // 设置收件人邮箱
            helper.setTo((String[])valueMap.get("to"));
            // 设置邮件标题
            helper.setSubject(valueMap.get("title").toString());

            // 添加正文(使用thymeleaf模板)
            Context context = new Context();
            context.setVariables(valueMap);
            String content = this.templateEngine.process("mail", context);
            helper.setText(content, true);

            // 添加附件
            if (valueMap.get("filePathList") != null) {
                String[] filePathList = (String[]) valueMap.get("filePathList");
                for(String filePath: filePathList) {
                    FileSystemResource fileSystemResource = new FileSystemResource(new File(filePath));
                    String fileName = filePath.substring(filePath.lastIndexOf(File.separator));
                    helper.addAttachment(fileName, fileSystemResource);
                }
            }

            // 发送邮件
            javaMailSender.send(mimeMessage);

        } catch (MessagingException e) {
            e.printStackTrace();
        }
    }
}

HTML模板文件mail.html如下:

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <div th:text="${title}"></div>
    <div th:text="${content}"></div>
</body>
</html>

3. 测试用例

@RunWith(SpringRunner.class)
@SpringBootTest
public class EmailToolTest {
    @Autowired
    private EmailTool emailTool;
    
    @Test
    public void sendSimpleMail() {

        String[] filePath = new String[]{"C:\\01.jpg"};

        Map<String, Object> valueMap = new HashMap<>();
        valueMap.put("to", new String[]{"接收邮箱1", "接收邮箱2"});
        valueMap.put("title", "邮件标题");
        valueMap.put("content", "邮件内容");
        valueMap.put("filePathList", filePath);

        emailTool.sendSimpleMail(valueMap);
    }
}

亲测无误。

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转载自blog.csdn.net/hushukang/article/details/84197694
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