spring boot:发送带附件的邮件和html内容的邮件(以163.com邮箱为例/spring boot 2.3.2)

时间:2023-03-09 05:17:26
spring boot:发送带附件的邮件和html内容的邮件(以163.com邮箱为例/spring boot 2.3.2)

一,网站哪些情况下需要发送电子邮件?

作为一个电商网站,以下情况需要发邮件通知用户:

注册成功的信息

用邮箱接收验证码

找回密码时发链接

发送推广邮件

下单成功后的订单通知

给商户的对账单邮件

说明:刘宏缔的架构森林是一个专注架构的博客,地址:https://www.cnblogs.com/architectforest

对应的源码可以访问这里获取: https://github.com/liuhongdi/

说明:作者:刘宏缔 邮箱: 371125307@qq.com

二,演示项目说明

1,项目地址:

https://github.com/liuhongdi/sendmail

2,项目说明:

分别演示了发送带有附件的邮件和html内容的邮件

3,项目结构:如图:

spring boot:发送带附件的邮件和html内容的邮件(以163.com邮箱为例/spring boot 2.3.2)

三,配置文件说明

1,pom.xml

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

说明:引入thymeleaf依赖,是因为需要有html内容的邮件需要发送

2,application.properties

spring.mail.host=smtp.163.com
spring.mail.username=demouser@163.com
spring.mail.password=demopassword
spring.mail.default-encoding=UTF-8
spring.mail.protocol=smtps
spring.mail.port=465
spring.mail.properties.mail.smtp.auth=true
spring.mail.properties.mail.smtp.starttls.enable=true
spring.mail.properties.mail.smtp.starttls.required=true

说明:注意此处的password不是我们登录到163邮箱的密码

而是从邮箱中获取到的授权码

另外如果在阿里云ecs,也不要使用smtp的25端口,

而是需要使用smtps的465端口

可以参见这一篇文章:

https://www.cnblogs.com/architectforest/p/12924395.html

四,java代码说明

1,MailUtil.java

@Component
public class MailUtil { @Resource
private JavaMailSender javaMailSender; @Resource
TemplateEngine templateEngine; //发送普通文本内容的邮件
public void sendTextMail(String from,String[] to,String[] cc,String[] bcc,String subject,String content,String[] files) throws MessagingException {
MimeMessage mimeMessage = javaMailSender.createMimeMessage();
MimeMessageHelper helper = new MimeMessageHelper(mimeMessage,true);
helper.setSubject(subject);
helper.setFrom(from);
helper.setTo(to);
helper.setSentDate(new Date());
helper.setText(content);
//抄送,收到邮件用户可以看到其他收件人
if (cc != null && cc.length > 0) {
helper.setCc(cc);
}
//密送 收到邮件用户看不到其他收件人
if (bcc != null && bcc.length > 0) {
helper.setBcc(bcc);
}
//附件:
if (files != null && files.length > 0) {
for (String filePath : files) {
File tmpOne = new File(filePath);
helper.addAttachment(tmpOne.getName(),tmpOne);
}
}
javaMailSender.send(mimeMessage);
} //发送html内容的邮件,使用thymeleaf渲染页面
public void sendHtmlMail(String from, String[] to, String[] cc, String[] bcc, String subject, String templateName, HashMap<String,String> content) throws MessagingException {
MimeMessage mimeMessage = javaMailSender.createMimeMessage();
MimeMessageHelper helper = new MimeMessageHelper(mimeMessage, true);
helper.setSubject(subject);
helper.setFrom(from);
helper.setTo(to);
//抄送,收到邮件用户可以看到其他收件人
if (cc != null && cc.length > 0) {
helper.setCc(cc);
}
//密送 收到邮件用户看不到其他收件人
if (bcc != null && bcc.length > 0) {
helper.setBcc(bcc);
}
helper.setSentDate(new Date());
//生成邮件模板上的内容
Context context = new Context();
if (content != null && content.size() > 0) {
for (String key : content.keySet()) {
context.setVariable(key, content.get(key));
}
}
String process = templateEngine.process(templateName, context);
helper.setText(process,true);
javaMailSender.send(mimeMessage);
}
}

说明:html邮件和普通邮件的处理不一样,

我们用map传递参数给thymeleaf模板

2,MailServiceImpl.java

@Service
public class MailServiceImpl implements MailService { @Resource
private MailUtil mailUtil; //发送text格式的邮件
@Override
public void sendAuthMail() {
String from = "demouser@163.com";
String[] to = {"371125307@qq.com"};
String subject = "老刘代码库发送给您的验证码";
String[] cc = {};
String[] bcc = {};
String content = "您的验证码:543210,请勿泄露";
String[] files = {"/data/springboot2/logo.jpg"};
try {
mailUtil.sendTextMail(from,to,cc,bcc,subject,content,files);
} catch (MessagingException e) {
e.printStackTrace();
System.out.println("邮件发送出错");
}
} //发送html格式的邮件
@Override
public void sendRegMail() {
String from = "demouser@163.com";
String[] to = {"371125307@qq.com"};
String subject = "恭喜您成功注册老刘代码库网站";
HashMap<String,String> content= new HashMap<String,String>();
content.put("username","laoliu");
content.put("nickname","老刘");
content.put("id","0000001");
String templateName= "mail/regmail.html";
try {
mailUtil.sendHtmlMail(from, to, null, null, subject, templateName, content);
} catch (MessagingException e) {
e.printStackTrace();
System.out.println("邮件发送出错");
}
}
}

说明:注意cc和bcc的区别:

cc方式接收到的用户可以看到其他接收用户

bcc方式接收用户看不到其他接收用户

3,html内容邮件的模板:

regmail.html

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<h1>您好,注册成功! 以下是您在本网站的注册信息:</h1>
<table border="1">
<tr>
<td>用户名</td>
<td th:text="${username}">${username}</td>
</tr>
<tr>
<td>昵称</td>
<td th:text="${nickname}">${nickname}</td>
</tr>
<tr>
<td>ID</td>
<td th:text="${id}">${id}</td>
</tr>
</table>
<div style="color: #ff1a0e">本站网址:http://springio.com</div>
</body>
</html>

五,测试效果:

1,测试带附件的邮件效果:

访问:

http://127.0.0.1:8080/home/authmail

收到的邮件如图:

spring boot:发送带附件的邮件和html内容的邮件(以163.com邮箱为例/spring boot 2.3.2)

2,测试发送html内容的邮件:

访问:

http://127.0.0.1:8080/home/regmail

收到邮件如图:

spring boot:发送带附件的邮件和html内容的邮件(以163.com邮箱为例/spring boot 2.3.2)

六,查看spring boot版本

  .   ____          _            __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.3.2.RELEASE)