spring boot整合發送郵箱（可一次發送多個）

一。郵箱要先開啟IMAP/SMTP服務，開啟后會顯示授權碼，保存下來，這是發送郵件時需要的密碼。（我這是qq郵箱）

 

 

 

 

 

 

 

 

 

二。pom.xml，引入依賴

<dependency>

　　<groupId>org.springframework.boot</groupId>

　　<artifactId>spring-boot-starter-mail</artifactId>

</dependency>

 

三。.properties 添加配置

#qq郵箱
spring.mail.host=smtp.qq.com
spring.mail.username=自己的郵箱
spring.mail.password=開啟IMAP/SMTP服務后顯示的密碼
spring.mail.protocol=smtp
spring.mail.default-encoding=UTF-8

四。寫成組件

@Component("EmailTool")
public class EmailTool {

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

    @Autowired
    private JavaMailSender javaMailSender;

    /**
     * 發送普通郵件
     **/
    public boolean sendEmail(Map<String, Object> dataMap) {
        try {
            if (dataMap == null || dataMap.size() <= 0) {
                return false;
            }
            SimpleMailMessage message = new SimpleMailMessage();
            //發送郵箱
            message.setFrom(sendEmail);
            //接收郵箱(可傳多個值,如：String[] ems = new String[]{"[e-mail]","[e-mail]"})
            message.setTo((String[]) dataMap.get("sendToEmail"));
            //標題
            message.setSubject(dataMap.get("title").toString());
            //內容
            message.setText(dataMap.get("content").toString());
            javaMailSender.send(message);
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }

    /**
     * 發送HTML郵件，可以整合郵件模板使用，這里就弄簡單點
     **/
    public boolean sendHtmlEmail(Map<String, Object> dataMap) {
        try {
            if (dataMap == null || dataMap.size() <= 0) {
                return false;
            }
            MimeMessage mimeMessage = javaMailSender.createMimeMessage();
            MimeMessageHelper mimeMessageHelper = new MimeMessageHelper(mimeMessage);
            mimeMessageHelper.setFrom(sendEmail);
            mimeMessageHelper.setTo((String[]) dataMap.get("sendToEmail"));
            mimeMessageHelper.setSubject(dataMap.get("title").toString());
            //內容，如 <h1>標題</h1><br/><p>這是內容</p>
            mimeMessageHelper.setText(dataMap.get("content").toString(), true);

            javaMailSender.send(mimeMessageHelper.getMimeMessage());
            return true;
        } catch (MessagingException e) {
            e.printStackTrace();
            return false;
        }
    }
}

五。測試

　　@Autowired
　　public EmailTool emailTool;

    @Test
    public void contextLoads() throws MessagingException {
        String[] ems = new String[]{"[e-mail]","[e-mail]"};
        Map<String, Object> valueMap = new HashMap<>();
        valueMap.put("sendToEmail",ems);
        valueMap.put("title", "測試郵件標題");
        valueMap.put("content", "測試郵件內容");
        emailTool.sendEmail(valueMap);
    }

參考文檔：
https://www.cnblogs.com/happy4java/p/11205907.html