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>
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
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); } }
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
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();
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); }
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); }
