Question

我想使用Java发送邮件但是使用我在这里http://www.tutorialspoint.com/java/java_sending_email.htm找到的本教程不起作用。

这是我的主要方法

public static void main(String[] args) {
        // Recipient's email ID needs to be mentioned.
      String to = "abcd@gmail.com";

      // Sender's email ID needs to be mentioned
      String from = "web@gmail.com";

      // Assuming you are sending email from localhost
      String host = "localhost";

      // Get system properties
      Properties properties = System.getProperties();

      // Setup mail server
      properties.setProperty("smtp.laposte.net", host);

      // Get the default Session object.
      Session session = Session.getDefaultInstance(properties);

      try{
         // Create a default MimeMessage object.
         MimeMessage message = new MimeMessage(session);

         // Set From: header field of the header.
         message.setFrom(new InternetAddress(from));

         // Set To: header field of the header.
         message.addRecipient(Message.RecipientType.TO, new InternetAddress(to));

         // Set Subject: header field
         message.setSubject("This is the Subject Line!");

         // Now set the actual message
         message.setText("This is actual message");

         // Send message
         Transport.send(message);
         System.out.println("Sent message successfully....");
      }catch (MessagingException mex) {
         mex.printStackTrace();
      }
    }

我有以下错误：

javax.mail.MessagingException：无法连接到SMTP主机：localhost，port：25; 嵌套异常是： java.net.ConnectException：连接被拒绝：连接在com.sun.mail.smtp.SMTPTransport.openServer（SMTPTransport.java:1972） at com.sun.mail.smtp.SMTPTransport.protocolConnect（SMTPTransport.java:642）在javax.mail.Service.connect（Service.java:295）在javax.mail.Service.connect（Service.java:176）在javax.mail.Service.connect（Service.java:125）在javax.mail.Transport.send0（Transport.java:194）在javax.mail.Transport.send（Transport.java:124）在javamail.JavaMail.main（JavaMail.java:58）引起：java.net.ConnectException：连接被拒绝：连接 at java.net.DualStackPlainSocketImpl.connect0（Native Method）在java.net.DualStackPlainSocketImpl.socketConnect（DualStackPlainSocketImpl.java:79）在java.net.AbstractPlainSocketImpl.doConnect（AbstractPlainSocketImpl.java:350） at java.net.AbstractPlainSocketImpl.connectToAddress（AbstractPlainSocketImpl.java:206）在java.net.AbstractPlainSocketImpl.connect（AbstractPlainSocketImpl.java:188）在java.net.PlainSocketImpl.connect（PlainSocketImpl.java:172）在java.net.SocksSocketImpl.connect（SocksSocketImpl.java:392）在java.net.Socket.connect（Socket.java:589）在java.net.Socket.connect（Socket.java:538）在com.sun.mail.util.SocketFetcher.createSocket（SocketFetcher.java:319）在com.sun.mail.util.SocketFetcher.getSocket（SocketFetcher.java:233）在com.sun.mail.smtp.SMTPTransport.openServer（SMTPTransport.java:1938） ......还有7个建立成功（总时间：1秒）

Answer 1

错误在主机使用中

host="smtp.gmail.com";

如果您使用gmail ID发送邮件。然后你需要打开gmail从extrnel应用程序发送邮件给用户。请点击以下链接https://support.google.com/a/answer/57919?hl=en 打开然后再试一次。

Answer 2

您也可以使用spring发送邮件。

bean.xml

<bean id="myMailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">
        <property name="host" value="smtp.gmail.com" />
        <property name="port" value="587" />
        <property name="username" value="<user_name>" />
        <property name="password" value="<password>" />

        <!-- The name of the property, following JavaBean naming conventions -->
        <property name="javaMailProperties">
            <props>
                <prop key="mail.transport.protocol">smtp</prop>
                <prop key="mail.smtp.auth">true</prop>
                <prop key="mail.smtp.starttls.enable">true</prop>
                <prop key="mail.debug">true</prop>
            </props>
        </property>
    </bean>

@Service("myMail")
    public class myMailApi {

        @Autowired
        private MailSender myMailSender;

        public void sendMail(String to,String from,String subject, String body){
            SimpleMailMessage simpleMailMessage = new SimpleMailMessage();
            simpleMailMessage.setTo(to);
            simpleMailMessage.setFrom(from);
            simpleMailMessage.setSubject(subject);
            simpleMailMessage.setText(body);
            myMailSender.send(simpleMailMessage);
        }
    }



private static void sendMailClient() {
        String mailXml = "mail-bean.xml";
        ApplicationContext context = new ClassPathXmlApplicationContext(mailXml);
        myMailApi mailBean = (mmyMailApi) context
                .getBean("myMail");
        mailBean.sendMail("<to>",
                "<from>", "<subject>", "<body>");
    }

Answer 3

我可以使用哪个服务器发送电子邮件而无需帐户并登录java mail api？ hotmail是否在不登录java邮件的情况下自动发送电子邮件？

无法使用JavaMail发送任何邮件

3 个答案: