我目前正在处理一个涉及创建.jar文件的项目。要实现以下目标,我应该导出/读取朋友注册表的路径,一旦完成,我应该通过电子邮件返回结果。整个概念是创建jar文件,一旦点击它,我就会通过电子邮件获得结果,因为我实际上是通过电子邮件发送的。
(我希望这有道理)
因此,首先,我结合了以下代码来实际读取注册表并显示注册表项(我是从关于读/写注册表堆栈溢出的流行帖子中得到的),因此读取过程运行良好,现在我的问题是电子邮件代码
(我不太确定这个代码的原始所有者是谁,但完全归功于他)我正在努力让这个电子邮件代码的基本概念发挥作用,这样我就可以继续将我的jar文件作为附件发送,并将其链接到我的代码,当用户点击jar文件时,注册表结果将通过电子邮件返回给我。
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.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
public class MailCode {
public static void main(String[] args) throws Exception {
final String smtp_host = "smtp.gmail.com";
final String smtp_username = "user@gmail.com";
final String smtp_password = "password";
final String smtp_connection = "TLS"; // Use 'TLS' or 'SSL' connection
final String toEmail="tomail@hotmail.com";
final String fromEmail="**@gmail.com";
Properties props = new Properties();
props.put("mail.smtp.auth", "true");
if (smtp_connection.equals("TLS")) {
props.put("mail.smtp.starttls.enable", "true");
props.put("mail.smtp.port", "587");
} else{
props.put("mail.smtp.socketFactory.port", "465");
props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
props.put("mail.smtp.port", "465");
}
Session session = Session.getInstance(props,
new javax.mail.Authenticator() {
@Override
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(smtp_username, smtp_password);
}
});
try {
Message msg = new MimeMessage(session);
msg.setFrom(new InternetAddress(fromEmail, "NoReply"));
msg.addRecipient(Message.RecipientType.TO,
new InternetAddress(toEmail, "Mr. Recipient"));
msg.setSubject("Welcome To JavaMail API");
msg.setText("JavaMail API Test - Sending email example through remote smtp server");
Transport.send(msg);
System.out.println("Email sent successfully...");
} catch (AddressException e) {
throw new RuntimeException(e);
} catch (MessagingException e) {
throw new RuntimeException(e);
}
}
}
这是我收到的错误消息:
Exception in thread "main" java.lang.RuntimeException: javax.mail.MessagingException: Could not connect to SMTP host: localhost, port: 587;
nested exception is:
java.net.SocketException: Permission denied: connect
下面的代码可以帮助您解决问题,它正在工作。。。。。。。。
import java.util.*;
import javax.mail.*;
import javax.mail.internet.*;
public class Email {
private static String USER_NAME = "username"; // GMail user name (just the part before "@gmail.com")
private static String PASSWORD = "password"; // GMail password
private static String RECIPIENT = "xxxxx@gmail.com";
public static void main(String[] args) {
String from = USER_NAME;
String pass = PASSWORD;
String[] to = { RECIPIENT }; // list of recipient email addresses
String subject = "Java send mail example";
String body = "hi ....,!";
sendFromGMail(from, pass, to, subject, body);
}
private static void sendFromGMail(String from, String pass, String[] to, String subject, String body) {
Properties props = System.getProperties();
String host = "smtp.gmail.com";
props.put("mail.smtp.starttls.enable", "true");
props.put("mail.smtp.ssl.trust", host);
props.put("mail.smtp.user", from);
props.put("mail.smtp.password", pass);
props.put("mail.smtp.port", "587");
props.put("mail.smtp.auth", "true");
Session session = Session.getDefaultInstance(props);
MimeMessage message = new MimeMessage(session);
try {
message.setFrom(new InternetAddress(from));
InternetAddress[] toAddress = new InternetAddress[to.length];
// To get the array of addresses
for( int i = 0; i < to.length; i++ ) {
toAddress[i] = new InternetAddress(to[i]);
}
for( int i = 0; i < toAddress.length; i++) {
message.addRecipient(Message.RecipientType.TO, toAddress[i]);
}
message.setSubject(subject);
message.setText(body);
Transport transport = session.getTransport("smtp");
transport.connect(host, from, pass);
transport.sendMessage(message, message.getAllRecipients());
transport.close();
}
catch (AddressException ae) {
ae.printStackTrace();
}
catch (MessagingException me) {
me.printStackTrace();
}
}
}
您正在设置smtp_host
,但从未使用过它。
javax.mail.MessagingException: Could not connect to SMTP host: localhost, port: 587;
你试图连接到"localhost"而不是gmail.com。这是因为你没有在任何地方设置mail.smtp.host
。
为什么要在非-TLS情况下设置SSL套接字工厂?
请检查您的防病毒/恶意软件。
如果您正在使用公司开发人员计算机,请与管理员联系以删除该访问保护规则。
我也遇到了同样的问题,我的McAfee阻止了所有的请求。
被端口阻止规则C:\PROGRAM FILES\JAVA\JDK1.80.74\BIN\JAVAW.EXE阻止防病毒标准保护:防止群发邮件蠕虫发送邮件0:0:0:0:ffff:4a7d:7e6d:587
在访问保护日志中发现此规则,并请求我的管理员删除该规则。
试试这个可能会对你有所帮助。