Hutool发送邮件_cn.hutool.extra.mail.mailexception: messagingexcep

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1 依赖

	 	<!--我使用的SpringBoot版本是2.2.5.RELEASE-->
   		<dependency>
            <groupId>cn.hutool</groupId>
            <artifactId>hutool-all</artifactId>
            <version>5.3.4</version>
        </dependency>
         <dependency>
            <groupId>com.sun.mail</groupId>
            <artifactId>javax.mail</artifactId>
            <version>1.6.2</version>
        </dependency>
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2 配置

放在classpath下，我的是springBoot，所以直接放在resources下即可

2.1、内容如下：

# 邮件服务器的SMTP地址
host = smtp.163.com
# 邮件服务器的SMTP的端口
port = 25
# 发件人（必须正确，否则发送失败）
from = xxx@163.com<xxx@163.com>
# 用户名（注意：如果使用foxmail邮箱，此处user为qq号）
user =xxx@163.com
# 密码
pass = xxx
# 使用STARTTLS安全链接
startttlsEnable = true
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3 发送

/**
 * @Author: oldlu
 * @Description:
 **/
public class MailUtilsTest {
    public static void main(String[] args) {
        String text = MailUtil.send("test@163.com", "title.test", "mail.send.test", false, null);
        System.out.println(text);
    }
}
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4 总结

使用hutool的发送邮件还是很简单的，它都封装好了，我上面只是发送个文本，当然发送文件，多人发送、抄送、密文都支持，发送速度还可以的。

5 线上遇到的问题

遇到错误：

cn.hutool.extra.mail.MailException: MessagingException: Could not connect to SMTP host: smtp.qq.com, port: 25

Caused by: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
Copy to clipboardErrorCopied
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这个错误可能是需要SSL验证造成的也有可能是线上服务器因为阿里云屏蔽了非SSL链接的25发送邮件端口，我们可以手动跳过这个验证：

MailAccount mailAccount = new MailAccount();
mailAccount.setAuth(true);
mailAccount.setSslEnable(true);
...
MailSSLSocketFactory sf = new MailSSLSocketFactory();
sf.setTrustAllHosts(true);
mailAccount.setCustomProperty("mail.smtp.ssl.socketFactory", sf);

Mail mail = Mail.create(mailAccount)
    .setTos("xx@xx.com")
    .setTitle("邮箱验证")
    .setContent("您的验证码是：<h3>2333</h3>")
    .setHtml(true)
    .send();
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或者更改短信发送端口为:465

6 实例代码:

 if (StringUtils.isBlank(filePath) && StringUtils.isBlank(fileId)) {
                                MailAccount mailAccount = new MailAccount();
                                mailAccountConfig(mailAccount);
                                sendEmail(email, subject, content, mailAccount, false);
                            }
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    private void mailAccountConfig(MailAccount mailAccount) throws GeneralSecurityException {
        mailAccount.setAuth(true);
        mailAccount.setSslEnable(true);
        mailAccount.setHost("smtp.163.com");
        mailAccount.setPort(465);
        mailAccount.setFrom("sdfayuan@163.com");
        mailAccount.setUser("sdfayuan");
        mailAccount.setPass("*******");
        MailSSLSocketFactory sf = new MailSSLSocketFactory();
        sf.setTrustAllHosts(true);
        mailAccount.setCustomProperty("mail.smtp.ssl.socketFactory", sf);
    }
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