Smtp 必须首先发出STARTTLS命令
我正在使用JavaMail和smtp(gmail),以下是我的代码:Smtp 必须首先发出STARTTLS命令,smtp,gmail,jakarta-mail,Smtp,Gmail,Jakarta Mail,我正在使用JavaMail和smtp(gmail),以下是我的代码: import java.util.Properties; import javax.mail.Message; import javax.mail.MessagingException; import javax.mail.Session; import javax.mail.Transport; import javax.mail.internet.AddressException; import javax.mai
import java.util.Properties;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
public class Email {
Properties emailProperties;
Session mailSession;
MimeMessage emailMessage;
public static void main(String args[]) throws AddressException,
MessagingException {
Email javaEmail = new Email();
javaEmail.setMailServerProperties();
javaEmail.createEmailMessage();
javaEmail.sendEmail();
}
public void setMailServerProperties() {
String emailPort = "587";//gmail's smtp port
emailProperties = System.getProperties();
emailProperties.put("mail.smtp.port", emailPort);
emailProperties.put("mail.smtp.auth", "true");
emailProperties.put("mail.smtp.starttls.enable", "true");
}
public void createEmailMessage() throws AddressException,
MessagingException {
String[] toEmails = { "to@gmail.com" };
String emailSubject = "Java Email";
String emailBody = "This is an email sent by JavaMail api.";
mailSession = Session.getDefaultInstance(emailProperties, null);
emailMessage = new MimeMessage(mailSession);
for (int i = 0; i < toEmails.length; i++) {
emailMessage.addRecipient(Message.RecipientType.TO, new InternetAddress(toEmails[i]));
}
emailMessage.setSubject(emailSubject);
emailMessage.setContent(emailBody, "text/html");//for a html email
//emailMessage.setText(emailBody);// for a text email
}
public void sendEmail() throws AddressException, MessagingException {
String emailHost = "smtp.gmail.com";
String fromUser = "yourusername";//just the id alone without @gmail.com
String fromUserEmailPassword = "your_password";
Transport transport = mailSession.getTransport("smtp");
transport.connect(emailHost, fromUser, fromUserEmailPassword);
transport.sendMessage(emailMessage, emailMessage.getAllRecipients());
transport.close();
System.out.println("Email sent successfully.");
}
}
你能试着换一下这行吗
Transport t = session.getTransport("smtps");
您必须提供所需的适当用户名和密码
你的邮件服务器。请注意,您可以将协议更改为“smtps”以
通过SSL建立安全连接
此处的完整信息:能否尝试更改此行:
Transport t = session.getTransport("smtps");
您必须提供所需的适当用户名和密码
你的邮件服务器。请注意,您可以将协议更改为“smtps”以
通过SSL建立安全连接
此处的完整信息:在我的例子中,上述问题发生在我使用ibm was-*.jar时。当我将jar切换到Javax.mail-version.jar(版本是一个类似于1.5.5的数字)时,它得到了解决。在我的例子中,上述问题发生在我使用ibm was-*.jar时。当我将jar切换到Javax.mail-version.jar(版本是一个类似于1.5.5的数字)时,它得到了解决。是的,我提供了一个有效的用户名和密码。更改该行后,我收到以下错误:线程“main”javax.mail.NoSuchProviderException中的异常:javax.mail.Session.getProvider(Session.java:436)处javax.mail.Session.getTransport(Session.java:631)处javax.mail.Session.getTransport(Session.java:612)处没有smtps的提供程序在com.mail.Email.sendmail(Email.java:65)和com.mail.Email.main(Email.java:26)上,听起来像这样的问题:支持jar:mail.jar和activation.jar在我的类路径中。是的,我提供了一个有效的用户名和密码。更改该行后,我收到以下错误:线程“main”javax.mail.NoSuchProviderException中的异常:javax.mail.Session.getProvider(Session.java:436)处javax.mail.Session.getTransport(Session.java:631)处javax.mail.Session.getTransport(Session.java:612)处没有smtps的提供程序在com.mail.Email.sendmail(Email.java:65)和com.mail.Email.main(Email.java:26)上,听起来像是这样的问题:支持jar:mail.jar和activation.jar在我的类路径中。