Question

由于Stack Overflow不允许我回答我的问题，我将在此处发布解决方案：Google SMTP Server在某些国家/地区不起作用，请尝试使用类似TunelBear的VPN，然后重试。它对我有用。

我正在尝试从我的应用程序向用户电子邮件发送验证码。

问题在于，除了不发送电子邮件之外，应用程序还会继续运行而不会抛出任何错误或给出任何响应。

PS。我在我的Google帐户上启用了“安全性较低的应用”。

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 * https://www.google.com/settings/security/lesssecureapps
 */
package SendEmail;

/**
 *
 * @author Naveen
 */
import java.util.*;
import javax.mail.*;
import javax.mail.internet.*;
import javax.mail.internet.MimeMessage;
public class EmailSend {

    public static void main(String args[]){
        try{
            String host ="smtp.gmail.com" ;
            String user = "myemail@gmail.com";
            String pass = "mypassword";
            String to = "emailToSend@gmail.com";
            String from = "myemail@gmail.com";
            String subject = "This is confirmation number for your expertprogramming account. Please insert this number to activate your account.";
            String messageText = "Your Is Test Email :";
            boolean sessionDebug = false;

            Properties props = System.getProperties();

            props.put("mail.smtp.starttls.enable", "true");
            props.put("mail.smtp.host", host);
            props.put("mail.smtp.port", "587");
            props.put("mail.smtp.auth", "true");
            props.put("mail.smtp.starttls.required", "true");

            java.security.Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());
            Session mailSession = Session.getDefaultInstance(props, 
                    new javax.mail.Authenticator() {
                        protected PasswordAuthentication getPasswordAuthentication(){
                            return new PasswordAuthentication("myEmail@gmail.com",
                                    "myPassword");
                        } } );



            mailSession.setDebug(sessionDebug);
            Message msg = new MimeMessage(mailSession);
            msg.setFrom(new InternetAddress(from));
            InternetAddress[] address = {new InternetAddress(to)};
            msg.setRecipients(Message.RecipientType.TO, address);
            msg.setSubject(subject); msg.setSentDate(new Date());
            msg.setText(messageText);

           Transport transport=mailSession.getTransport("smtp");
           transport.connect(host, user, pass);
           transport.sendMessage(msg, msg.getAllRecipients());
           transport.close();
           System.out.println("message send successfully");
        }catch(Exception ex)
        {
            ex.printStackTrace();
        }

    }
}

Answer 1

转到您的Google帐户安全设置，然后执行以下操作：允许安全级别较低的应用程序：启用

JavaMail API无法正常工作

1 个答案: