从Kotlin服务发送电子邮件的问题

dependencies {
    implementation("com.sun.mail:javax.mail:1.6.2")
}

import javax.mail.*
import javax.mail.internet.InternetAddress
import javax.mail.internet.MimeMessage

fun sendEmail() {
    val properties = Properties()
    properties["mail.smtp.host"] = "smtp.example.com" // 设置SMTP服务器地址
    properties["mail.smtp.port"] = "587" // 设置SMTP服务器端口号
    properties["mail.smtp.auth"] = "true" // 启用身份验证
    properties["mail.smtp.starttls.enable"] = "true" // 启用TLS加密

    val session = Session.getInstance(properties, object : Authenticator() {
        override fun getPasswordAuthentication(): PasswordAuthentication {
            return PasswordAuthentication("your-email@example.com", "your-password") // 设置发件人邮箱和密码
        }
    })

    val message = MimeMessage(session)
    message.setFrom(InternetAddress("your-email@example.com")) // 设置发件人邮箱
    message.setRecipients(Message.RecipientType.TO, InternetAddress.parse("recipient@example.com")) // 设置收件人邮箱
    message.subject = "Hello, World!" // 设置邮件主题
    message.setText("This is a test email.") // 设置邮件内容

    Transport.send(message) // 发送邮件
}