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spring-boot-demo-email

此 demo 主要演示了 Spring Boot 如何整合邮件功能,包括发送简单文本邮件、HTML邮件(包括模板HTML邮件)、附件邮件、静态资源邮件。

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <artifactId>spring-boot-demo-email</artifactId>
  <version>1.0.0-SNAPSHOT</version>
  <packaging>jar</packaging>

  <name>spring-boot-demo-email</name>
  <description>Demo project for Spring Boot</description>

  <parent>
    <groupId>com.xkcoding</groupId>
    <artifactId>spring-boot-demo</artifactId>
    <version>1.0.0-SNAPSHOT</version>
  </parent>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <java.version>1.8</java.version>
    <jasypt.version>2.1.1</jasypt.version>
  </properties>

  <dependencies>
    <!-- Spring Boot 邮件依赖 -->
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-mail</artifactId>
    </dependency>

    <!--jasypt配置文件加解密-->
    <dependency>
      <groupId>com.github.ulisesbocchio</groupId>
      <artifactId>jasypt-spring-boot-starter</artifactId>
      <version>${jasypt.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-test</artifactId>
      <scope>test</scope>
    </dependency>

    <dependency>
      <groupId>cn.hutool</groupId>
      <artifactId>hutool-all</artifactId>
    </dependency>

    <!-- Spring Boot 模板依赖 -->
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-thymeleaf</artifactId>
    </dependency>
  </dependencies>

  <build>
    <finalName>spring-boot-demo-email</finalName>
    <plugins>
      <plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
      </plugin>
    </plugins>
  </build>

</project>

application.yml

spring:
  mail:
    host: smtp.mxhichina.com
    port: 465
    username: [email protected]
    # 使用 jasypt 加密密码,使用com.xkcoding.email.PasswordTest.testGeneratePassword 生成加密密码,替换 ENC(加密密码)  
    password: ENC(OT0qGOpXrr1Iog1W+fjOiIDCJdBjHyhy)
    protocol: smtp
    test-connection: true
    default-encoding: UTF-8
    properties:
      mail.smtp.auth: true
      mail.smtp.starttls.enable: true
      mail.smtp.starttls.required: true
      mail.smtp.ssl.enable: true
      mail.display.sendmail: spring-boot-demo
# 为 jasypt 配置解密秘钥
jasypt:
  encryptor:
    password: spring-boot-demo

MailService.java

/**
 * <p>
 * 邮件接口
 * </p>
 *
 * @package: com.xkcoding.email.service
 * @description: 邮件接口
 * @author: yangkai.shen
 * @date: Created in 2018/11/21 11:16
 * @copyright: Copyright (c) 2018
 * @version: V1.0
 * @modified: yangkai.shen
 */
public interface MailService {
    /**
     * 发送文本邮件
     *
     * @param to      收件人地址
     * @param subject 邮件主题
     * @param content 邮件内容
     * @param cc      抄送地址
     */
    void sendSimpleMail(String to, String subject, String content, String... cc);

    /**
     * 发送HTML邮件
     *
     * @param to      收件人地址
     * @param subject 邮件主题
     * @param content 邮件内容
     * @param cc      抄送地址
     * @throws MessagingException 邮件发送异常
     */
    void sendHtmlMail(String to, String subject, String content, String... cc) throws MessagingException;

    /**
     * 发送带附件的邮件
     *
     * @param to       收件人地址
     * @param subject  邮件主题
     * @param content  邮件内容
     * @param filePath 附件地址
     * @param cc       抄送地址
     * @throws MessagingException 邮件发送异常
     */
    void sendAttachmentsMail(String to, String subject, String content, String filePath, String... cc) throws MessagingException;

    /**
     * 发送正文中有静态资源的邮件
     *
     * @param to      收件人地址
     * @param subject 邮件主题
     * @param content 邮件内容
     * @param rscPath 静态资源地址
     * @param rscId   静态资源id
     * @param cc      抄送地址
     * @throws MessagingException 邮件发送异常
     */
    void sendResourceMail(String to, String subject, String content, String rscPath, String rscId, String... cc) throws MessagingException;

} 

MailServiceImpl.java

/**
 * <p>
 * 邮件接口
 * </p>
 *
 * @package: com.xkcoding.email.service.impl
 * @description: 邮件接口
 * @author: yangkai.shen
 * @date: Created in 2018/11/21 13:49
 * @copyright: Copyright (c) 2018
 * @version: V1.0
 * @modified: yangkai.shen
 */
@Service
public class MailServiceImpl implements MailService {
    @Autowired
    private JavaMailSender mailSender;
    @Value("${spring.mail.username}")
    private String from;

    /**
     * 发送文本邮件
     *
     * @param to      收件人地址
     * @param subject 邮件主题
     * @param content 邮件内容
     * @param cc      抄送地址
     */
    @Override
    public void sendSimpleMail(String to, String subject, String content, String... cc) {
        SimpleMailMessage message = new SimpleMailMessage();
        message.setFrom(from);
        message.setTo(to);
        message.setSubject(subject);
        message.setText(content);
        if (ArrayUtil.isNotEmpty(cc)) {
            message.setCc(cc);
        }
        mailSender.send(message);
    }

    /**
     * 发送HTML邮件
     *
     * @param to      收件人地址
     * @param subject 邮件主题
     * @param content 邮件内容
     * @param cc      抄送地址
     * @throws MessagingException 邮件发送异常
     */
    @Override
    public void sendHtmlMail(String to, String subject, String content, String... cc) throws MessagingException {
        MimeMessage message = mailSender.createMimeMessage();
        MimeMessageHelper helper = new MimeMessageHelper(message, true);
        helper.setFrom(from);
        helper.setTo(to);
        helper.setSubject(subject);
        helper.setText(content, true);
        if (ArrayUtil.isNotEmpty(cc)) {
            helper.setCc(cc);
        }
        mailSender.send(message);
    }

    /**
     * 发送带附件的邮件
     *
     * @param to       收件人地址
     * @param subject  邮件主题
     * @param content  邮件内容
     * @param filePath 附件地址
     * @param cc       抄送地址
     * @throws MessagingException 邮件发送异常
     */
    @Override
    public void sendAttachmentsMail(String to, String subject, String content, String filePath, String... cc) throws MessagingException {
        MimeMessage message = mailSender.createMimeMessage();

        MimeMessageHelper helper = new MimeMessageHelper(message, true);
        helper.setFrom(from);
        helper.setTo(to);
        helper.setSubject(subject);
        helper.setText(content, true);
        if (ArrayUtil.isNotEmpty(cc)) {
            helper.setCc(cc);
        }
        FileSystemResource file = new FileSystemResource(new File(filePath));
        String fileName = filePath.substring(filePath.lastIndexOf(File.separator));
        helper.addAttachment(fileName, file);

        mailSender.send(message);
    }

    /**
     * 发送正文中有静态资源的邮件
     *
     * @param to      收件人地址
     * @param subject 邮件主题
     * @param content 邮件内容
     * @param rscPath 静态资源地址
     * @param rscId   静态资源id
     * @param cc      抄送地址
     * @throws MessagingException 邮件发送异常
     */
    @Override
    public void sendResourceMail(String to, String subject, String content, String rscPath, String rscId, String... cc) throws MessagingException {
        MimeMessage message = mailSender.createMimeMessage();

        MimeMessageHelper helper = new MimeMessageHelper(message, true);
        helper.setFrom(from);
        helper.setTo(to);
        helper.setSubject(subject);
        helper.setText(content, true);
        if (ArrayUtil.isNotEmpty(cc)) {
            helper.setCc(cc);
        }
        FileSystemResource res = new FileSystemResource(new File(rscPath));
        helper.addInline(rscId, res);

        mailSender.send(message);
    }
}

MailServiceTest.java

/**
 * <p>
 * 邮件测试
 * </p>
 *
 * @package: com.xkcoding.email.service
 * @description: 邮件测试
 * @author: yangkai.shen
 * @date: Created in 2018/11/21 13:49
 * @copyright: Copyright (c) 2018
 * @version: V1.0
 * @modified: yangkai.shen
 */
public class MailServiceTest extends SpringBootDemoEmailApplicationTests {
    @Autowired
    private MailService mailService;
    @Autowired
    private TemplateEngine templateEngine;
    @Autowired
    private ApplicationContext context;

    /**
     * 测试简单邮件
     */
    @Test
    public void sendSimpleMail() {
        mailService.sendSimpleMail("[email protected]", "这是一封简单邮件", "这是一封普通的SpringBoot测试邮件");
    }

    /**
     * 测试HTML邮件
     *
     * @throws MessagingException 邮件异常
     */
    @Test
    public void sendHtmlMail() throws MessagingException {
        Context context = new Context();
        context.setVariable("project", "Spring Boot Demo");
        context.setVariable("author", "Yangkai.Shen");
        context.setVariable("url", "https://github.com/xkcoding/spring-boot-demo");

        String emailTemplate = templateEngine.process("welcome", context);
        mailService.sendHtmlMail("[email protected]", "这是一封模板HTML邮件", emailTemplate);
    }

    /**
     * 测试HTML邮件,自定义模板目录
     *
     * @throws MessagingException 邮件异常
     */
    @Test
    public void sendHtmlMail2() throws MessagingException {

        SpringResourceTemplateResolver templateResolver = new SpringResourceTemplateResolver();
        templateResolver.setApplicationContext(context);
        templateResolver.setCacheable(false);
        templateResolver.setPrefix("classpath:/email/");
        templateResolver.setSuffix(".html");

        templateEngine.setTemplateResolver(templateResolver);

        Context context = new Context();
        context.setVariable("project", "Spring Boot Demo");
        context.setVariable("author", "Yangkai.Shen");
        context.setVariable("url", "https://github.com/xkcoding/spring-boot-demo");

        String emailTemplate = templateEngine.process("test", context);
        mailService.sendHtmlMail("[email protected]", "这是一封模板HTML邮件", emailTemplate);
    }

    /**
     * 测试附件邮件
     *
     * @throws MessagingException 邮件异常
     */
    @Test
    public void sendAttachmentsMail() throws MessagingException {
        URL resource = ResourceUtil.getResource("static/xkcoding.png");
        mailService.sendAttachmentsMail("[email protected]", "这是一封带附件的邮件", "邮件中有附件,请注意查收!", resource.getPath());
    }

    /**
     * 测试静态资源邮件
     *
     * @throws MessagingException 邮件异常
     */
    @Test
    public void sendResourceMail() throws MessagingException {
        String rscId = "xkcoding";
        String content = "<html><body>这是带静态资源的邮件<br/><img src=\'cid:" + rscId + "\' ></body></html>";
        URL resource = ResourceUtil.getResource("static/xkcoding.png");
        mailService.sendResourceMail("[email protected]", "这是一封带静态资源的邮件", content, resource.getPath(), rscId);
    }
}

welcome.html

此文件为邮件模板,位于 resources/templates 目录下

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>SpringBootDemo(入门SpringBoot的首选Demo)</title>
    <style>
        body {
            text-align: center;
            margin-left: auto;
            margin-right: auto;
        }

        #welcome {
            text-align: center;
        }
    </style>
</head>
<body>
<div id="welcome">
    <h3>欢迎使用 <span th:text="${project}"></span> - Powered By <span th:text=" ${author}"></span></h3>
    <span th:text="${url}"></span>
    <div style="text-align: center; padding: 10px">
        <a style="text-decoration: none;" href="#" th:href="@{${url}}" target="_bank">
            <strong>spring-boot-demo,入门Spring Boot的首选Demo!:)</strong>
        </a>
    </div>
    <div style="text-align: center; padding: 4px">
        如果对你有帮助,请任意打赏
    </div>
    <div style="width: 100%;height: 100%;text-align: center;display: flex">
        <div style="flex: 1;"></div>
        <div style="display: flex;width: 400px;">
            <div style="flex: 1;text-align: center;">
                <div>
                    <img width="180px" height="180px" src="http://xkcoding.com/resources/wechat-reward-image.png">
                </div>
                <div>微信打赏</div>
            </div>
            <div style="flex: 1;text-align: center;">
                <div><img width="180px" height="180px" src="http://xkcoding.com/resources/alipay-reward-image.png">
                </div>
                <div>支付宝打赏</div>
            </div>
        </div>
        <div style="flex: 1;"></div>
    </div>

</div>
</body>
</html>

参考