java com.sun.mail.util.MailConnectException：无法连接到主机，端口：本地主机，25；超时 -1;
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com.sun.mail.util.MailConnectException: Couldn't connect to host, port: localhost, 25; timeout -1;
提问by ips
package jmail;
import java.util.Date; import java.util.Properties;
import javax.mail.Authenticator; import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
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 HtmlJavaSend {
public void sendHtmlEmail(String host, String port,
final String userName, final String password, String toAddress,
String subject, String message) throws AddressException,
MessagingException {
// sets SMTP server properties
Properties properties = new Properties();
properties.put("mail.man.com", host);
properties.put("mail.25", port);
properties.put("mail.smtp.auth", "true");
properties.put("mail.smtp.starttls.enable", "true");
properties.put("mail.smtp.ssl.trust","mail.man.com");
// creates a new session with an authenticator
Authenticator auth = new Authenticator() {
public PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(userName, password);
}
};
Session session = Session.getInstance(properties, auth);
// creates a new e-mail message
Message msg = new MimeMessage(session);
msg.setFrom(new InternetAddress(userName));
InternetAddress[] toAddresses = {new InternetAddress(toAddress)};
msg.setRecipients(Message.RecipientType.TO, toAddresses);
msg.setSubject(subject);
msg.setSentDate(new Date());
// set plain text message
msg.setContent(message, "text/html");
// sends the e-mail
Transport.send(msg);
}
public static void main(String[] args) {
// SMTP server information
String host = "mail.man.com";
String port = "25";
String mailFrom = "[email protected]";
String password = "Man";
// outgoing message information
String mailTo = "[email protected]";
String subject = "Hello my friend";
// message contains HTML markups
String message = "<i>Greetings!</i><br>";
message += "<b>Wish you a nice day!</b><br>";
message += "<font color=red>Duke</font>";
HtmlJavaSend mailer = new HtmlJavaSend();
try {
mailer.sendHtmlEmail(host, port, mailFrom, password, mailTo,
subject, message);
System.out.println("Email sent.");
} catch (Exception ex) {
System.out.println("Failed to sent email.");
ex.printStackTrace();
}
} }
The error is:
错误是：
eror run: Failed to sent email. com.sun.mail.util.MailConnectException: Couldn't connect to host, port: localhost, 25; timeout -1; nested exception is: java.net.ConnectException: Connection refused: connect at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:2100) at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:699) at javax.mail.Service.connect(Service.java:388) at javax.mail.Service.connect(Service.java:246) at javax.mail.Service.connect(Service.java:195) at javax.mail.Transport.send0(Transport.java:254) at javax.mail.Transport.send(Transport.java:124) at jmail.HtmlJavaSend.sendHtmlEmail(HtmlJavaSend.java:62) at jmail.HtmlJavaSend.main(HtmlJavaSend.java:85) Caused by: java.net.ConnectException: Connection refused: connect at java.net.DualStackPlainSocketImpl.connect0(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:79) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:579) at java.net.Socket.connect(Socket.java:528) at com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:331) at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:238) at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:2066) ... 8 more BUILD SUCCESSFUL (total time: 1 second)
错误运行：无法发送电子邮件。com.sun.mail.util.MailConnectException：无法连接到主机，端口：本地主机，25；超时 -1; 嵌套异常是：java.net.ConnectException：连接被拒绝：连接在 com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:2100) at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java: 699) 在 javax.mail.Service.connect(Service.java:388) 在 javax.mail.Service.connect(Service.java:246) 在 javax.mail.Service.connect(Service.java:195) 在 javax。 mail.Transport.send0(Transport.java:254) at javax.mail.Transport.send(Transport.java:124) at jmail.HtmlJavaSend.sendHtmlEmail(HtmlJavaSend.java:62) at jmail.HtmlJavaSend.main(HtmlJavaSend.java) :85) 引起：java.net.ConnectException：连接被拒绝：在 java.net 连接。
回答by porgo
You have error here:
你这里有错误：
properties.put("mail.man.com", host);
properties.put("25", port);
It should be:
它应该是：
properties.put("mail.smtp.host", host);
properties.put("mail.smtp.port", port);
