邮箱验证：spring boot发邮件

spring boot发邮件

注册一个邮箱,开启POP3/SMTP

jar包

maven仓库搜索：Spring Boot Starter Mail

maven

<!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-mail -->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-mail</artifactId>
    <version>2.3.5.RELEASE</version>
</dependency>

配置springmail连接信息

host：smtp服务器地址

qq，163，新浪的都可以

新浪SMTP服务器：smtp.sina.com

qqSMTP服务器：smtp.qq.com

163：smtp.163.com

port：端口

qq: 465 或587

新浪：465

163：我猜也是465

username : 邮箱地址

你的邮箱地址

password ： 客户端授权码

客户端授权码适用于任何通过IMAP/POP3/SMTP协议登录邮箱的客户端。用于替换在客户端设置中的“登录密码”。新浪邮箱官方手机客户端app，仍然使用邮箱登录密码登录。

所以spring boot配置文件属性：spring.mail.password 值要为客户端授权码，使用密码会报错：

org.springframework.mail.MailAuthenticationException: Authentication failed

步骤

获取JavaMailSender:

@Autowired
private JavaMailSender sender;

//获取空白的邮件体
MimeMessage createMimeMessage();
//信件内容输入流构成邮件体
MimeMessage createMimeMessage(InputStream var1) throws MailException;
//发送单个邮件
void send(MimeMessage var1) throws MailException;
//多个
void send(MimeMessage... var1) throws MailException;
//下面两个没用过
void send(MimeMessagePreparator var1) throws MailException;
void send(MimeMessagePreparator... var1) throws MailException;

获取MimeMessage

 MimeMessage mimeMessage =sender.createMimeMessage();

MimeMessage:邮件消息体

获取MimeMessageHelper

//封装消息体
MimeMessageHelper helper=new MimeMessageHelper(mimeMessage);

//取出消息体
helper.getMimeMessage();

设置消息体

 //你的邮件地址
 helper.setFrom(from);
 //目标邮件地址
 helper.setTo(to);
 //邮件主题
 helper.setSubject(submit);
 //邮件内容 重载方法，后面参数为是否支持html 
 helper.setText(compnent,true);

发送(参数类型为MimeMessage)
```
sender.send(helper.getMimeMessage());
```
代码及测试

@Component
public class SpringMail {
    @Autowired
    private JavaMailSender sender;
    private static final Logger loger= LoggerFactory.getLogger(SpringMail.class);
    @Value("${spring.mail.username}")
    private String from;
    public void setSender(String to,String submit,String compnent) {
        MimeMessage mimeMessage =sender.createMimeMessage();
        MimeMessageHelper helper=new MimeMessageHelper(mimeMessage);
        try {
            helper.setFrom(from);
            helper.setTo(to);
            helper.setSubject(submit);
            //支持html
            helper.setText(compnent,true);
            sender.send(helper.getMimeMessage());
        } catch (MessagingException e) {
            loger.error("发送失败"+e.getMessage());
        }
    }
}

测试部分：

@Autowired
 private SpringMail mail;
 @Test
  public void send(){
  mail.setSender("519155720@qq.com","helloWorld","hello my first mail!");
}

使用thymeleaf引擎发送含有特定值的页面

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>你好</title>
</head>
<body>
你好：<span th:bgcolor="yellow" th:text="${name}"></span>，打扰一下<br>
<pre>
    验证码是：9527
    请不要将此验证码给陌生人
</pre>
</body>
</html>

@Autowired
        private SpringMail mail;
        @Autowired
        TemplateEngine templateEngine;
        @Test
        public void send() throws MalformedURLException {
            Context context=new Context();
            context.setVariable("name", "憨批");
            String process = templateEngine.process("/mail/mail.html", context);
            mail.setSender("632593482@qq.com","helloWorld",process);

        }