这是 SendMailTLS.java。 这项工作。
Properties props = new Properties();
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.host", "smtp.gmail.com");
props.put("mail.smtp.port", "587");
props.put("mail.smtp.starttls.enable", "true");
//props.put("mail.smtp.ssl.trust", "smtp.gmail.com"); //if avast is enabled
Session session = Session.getInstance(props,
new javax.mail.Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(username, password);
}
});
try {
Message message = new MimeMessage(session);
message.setFrom(new InternetAddress(username));
message.setRecipients(Message.RecipientType.TO,
InternetAddress.parse(recipient));
message.setSubject("TLS");
message.setText("TLS");
Transport.send(message);
System.out.println("Done");
} catch (MessagingException e) {
throw new RuntimeException(e);
}
这是 SendMailSSL.java。 这行不通。
Properties props = new Properties();
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.host", "smtp.gmail.com");
props.put("mail.smtp.port", "465");
props.put("mail.smtp.socketFactory.port", "465");
props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
Session session = Session.getInstance(props,
new javax.mail.Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(username, password);
}
});
try {
Message message = new MimeMessage(session);
message.setFrom(new InternetAddress(username));
message.setRecipients(Message.RecipientType.TO,
InternetAddress.parse(recipient));
message.setSubject("SSL");
message.setText("SSL");
Transport.send(message);
System.out.println("Done");
} catch (MessagingException e) {
throw new RuntimeException(e);
}
两个类都导入:
import java.util.Properties;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
我不明白代码的作用,如果有人能帮我解释一下。我在 SSL 文件中做错了什么吗?如果我使用的是 java 邮件 API,我是否需要担心 TLS 版本?
最佳答案
首先修复这些 common mistakes .然后解释“不起作用”是什么意思,也许包括 JavaMail debug output .
由于您无法弄清楚如何修复 common mistakes你自己,尝试将代码更改为:
Properties props = new Properties();
props.put("mail.smtp.ssl.enable", "true");
props.put("mail.smtp.host", "smtp.gmail.com");
Session session = Session.getInstance(props, null);
session.setDebug(true);
try {
Message message = new MimeMessage(session);
message.setFrom(new InternetAddress(username));
message.setRecipients(Message.RecipientType.TO,
InternetAddress.parse(recipient));
message.setSubject("SSL");
message.setText("SSL");
Transport.send(message, username, password);
System.out.println("Done");
} catch (MessagingException e) {
System.out.println(e);
throw new RuntimeException(e);
}
如果这不起作用,请发布 debug output (在上面启用)并尝试 connection debugging tips并报告结果。
关于java - 使用 SSL 发送电子邮件在我的 Java 应用程序中不起作用,TLS 起作用,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/29725873/