前言
在许多企业级项目中,需要用到邮件发送的功能,如:
- 注册用户时需要邮箱发送验证
- 用户生日时发送邮件通知祝贺
发送邮件给用户等
创建工程导入依赖
<!-- 邮箱发送依赖 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-mail</artifactId>
</dependency>
<!-- 小火龙代码简化 -->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.8</version>
</dependency>
本工程依赖于SpringBoot,是基于SpringBoot再次对邮箱发送进行了一次封装。
创建Application.properties
# JavaMailSender 邮件发送的配置
spring.mail.host=smtp.qq.com
[email protected]
#授权码
spring.mail.password=
spring.mail.properties.mail.smtp.auth=true
spring.mail.properties.mail.smtp.starttls.enable=true
spring.mail.properties.mail.smtp.starttls.required=true
spring.mail.default-encoding=UTF-8
封装邮箱发送工具类
创建邮箱信息实体类,如下:
/**
* 邮件信息实体
*
* @author:伍梓涛
* @version:1.0.0
* @Modified By:SimpleWu
* @CopyRright (c)2019-:YUM架构平台
*/
@Data
public class MailEntity {
private String to; //收件人
private String subject;//标题
private String text;//正文
private boolean isHtml = false;//是否html邮件
private List<String> files;//附件地址
private Date sentDate;//发送时间
}
创建邮箱信息实体类工具,快捷创建邮件信息
/**
* 邮箱发送信息统一处理封装
*
* @author:伍梓涛
* @version:1.0.0
* @Modified By:SimpleWu
* @CopyRright (c)2019-:YUM架构平台
*/
@Slf4j
public class MailEntityHelper {
public static MimeMessageHelper craeteMessageHelper(MimeMessage mimeMessage, MailEntity mailBean) throws MessagingException {
MimeMessageHelper mimeMessageHelper = new MimeMessageHelper(mimeMessage, true);
// mimeMessageHelper.setFrom(emailSender);//发件人
mimeMessageHelper.setTo(mailBean.getTo());//收件人
mimeMessageHelper.setSubject(mailBean.getSubject());//标题
mimeMessageHelper.setText(mailBean.getText(), mailBean.isHtml());//是否html
mimeMessageHelper.setSentDate(mailBean.getSentDate() == null ? new Date() : mailBean.getSentDate());// 客户端邮箱发送时间
if (mailBean.getFiles() != null && mailBean.getFiles().size() > 0) {
//附件添加
mailBean.getFiles().forEach(filename -> {
String ext = filename.substring(filename.lastIndexOf(".") + 1, filename.length());
File diskfile = new File(filename);
try {
mimeMessageHelper.addAttachment(diskfile.getName(), diskfile);
} catch (MessagingException e) {
e.printStackTrace();
log.error("设置附件失败:{}", mailBean);
}
});
}
return mimeMessageHelper;
}
}
创建邮箱发送工具类,进行邮箱发送:
/**
* 邮箱发送工具类
*
* @author:伍梓涛
* @version:1.0.0
* @Modified By:SimpleWu
* @CopyRright (c)2019-:YUM架构平台
*/
@Component
@Slf4j
public class MailHelper {
@Autowired
private JavaMailSender javaMailSender;
@Value("${spring.mail.username}")
private String emailSender;
private static MailHelper mailHelper;
public MailHelper() {
mailHelper = this;
}
/**
* 构建静态获取实例
*
* @return
*/
public static MailHelper buidler() {
if (mailHelper == null) {
return null;
}
return mailHelper;
}
/*public void sendSimpleMail(EmailContextPojo mailBean) {
try {
SimpleMailMessage simpleMailMessage = new SimpleMailMessage();
//邮件发送人
simpleMailMessage.setFrom(emailSender);
//邮件接收人
simpleMailMessage.setTo(mailBean.getTo());
//邮件主题
simpleMailMessage.setSubject(mailBean.getSubject());
//邮件内容
simpleMailMessage.setText(mailBean.getText());
javaMailSender.send(simpleMailMessage);
} catch (Exception e) {
e.printStackTrace();
log.error("邮件发送失败", e.getMessage());
}
}*/
public void sendMail(MailEntity mailBean) {
MimeMessage mimeMailMessage = null;
try {
mimeMailMessage = javaMailSender.createMimeMessage();
MimeMessageHelper mimeMessageHelper = MailEntityHelper.craeteMessageHelper(mimeMailMessage, mailBean);
mimeMessageHelper.setFrom(emailSender);//发件人
javaMailSender.send(mimeMailMessage);
} catch (Exception e) {
log.error("邮件发送失败", e.getMessage());
}
}
public void sendMail(MailEntity... mailBeans) {
//批量发送集合
List<MimeMessage> mimeMessages = new ArrayList<>(mailBeans.length);
try {
if (mailBeans != null || mailBeans.length > 0) {
for (int i = 0; i < mailBeans.length; i++) {
MimeMessage mimeMailMessage = javaMailSender.createMimeMessage();
MimeMessageHelper messageHelper = MailEntityHelper.craeteMessageHelper(mimeMailMessage, mailBeans[i]);
messageHelper.setFrom(emailSender);//发件人
mimeMessages.add(mimeMailMessage);
}
}
MimeMessage[] resultMessage = new MimeMessage[mimeMessages.size()];
mimeMessages.toArray(resultMessage);
javaMailSender.send((resultMessage));
} catch (Exception e) {
log.error("邮件发送失败", e.getMessage());
}
}
}
在之前通过邮箱发送信息统一处理的工具类,对邮件信息实体进行封装后,这里就只需要传入对象参数即可。由于在这里使用的是SpringBoot已经封装好的,由于我们要把它当成工具类使用,每次需要注入并不方便。
所在在类中加了个静态对象,在Spring 容器实例化的时候给他初始化直接赋值给javaMailSender并且通过buidler()可以静态获取到实例对象,但是这样如果被重新创建对象后就会产生问题,所以最好在工具类中使用Spring 容器去获取 javaMailSender即可 。
发送邮件
1.发送普通邮件
MailEntity emailContextPojo = new MailEntity();
emailContextPojo.setSubject("Ycloud 邮箱标题");
emailContextPojo.setText("Ycloud 邮箱正文");
emailContextPojo.setTo(" 接收邮箱号 ");
MailHelper.buidler().sendMail(emailContextPojo);
2.发送Html邮件
emailContextPojo.setHtml(true);
只需要将信息实体类设置成true即可。
3.发送附件
emailContextPojo.setFiles(Arrays.asList("D:\\Yum系统架构平台\\004.高系统部署\\004.PXC\\部署手册.docx"));
只需要增加附件路径即可。
注: 请勿直接在项目中使用邮箱发送
可参考JOB实现定时发送邮件:https://www.cnblogs.com/SimpleWu/p/11341453.html
本文代码案例:https://github.com/450255266/open-doubi/tree/master/SpringBoot/email