javaqq邮箱发送附件

在Java中，可以通过JavaMail API来发送带附件的邮件。以下是一个简单的示例，展示了如何使用JavaMail API发送带附件的邮件：

1. 首先，需要在项目中引入JavaMail依赖。如果你使用的是Maven，可以在`pom.xml`中添加以下依赖：

    <dependency>
        <groupId>com.sun.mail</groupId>
        <artifactId>javax.mail</artifactId>
        <version>1.6.2</version>
    </dependency>

2. 然后，编写代码来发送带附件的邮件：

    import java.util.Properties;
    import javax.mail.*;
    import javax.mail.internet.*;
    import java.io.File;

    public class EmailWithAttachment {
        public static void main(String[] args) {
            // 邮件服务器的配置
            String host = "smtp.example.com";
            String from = "your_email@example.com";
            String to = "recipient@example.com";
            String subject = "Test Email with Attachment";
            String bodyText = "This is a test email with an attachment.";

            // 附件文件
            String filePath = "path/to/your/file.txt";

            // 设置邮件属性
            Properties properties = new Properties();
            properties.put("mail.smtp.host", host);
            properties.put("mail.smtp.port", "587");
            properties.put("mail.smtp.auth", "true");
            properties.put("mail.smtp.starttls.enable", "true");

            // 创建会话
            Session session = Session.getInstance(properties, new Authenticator() {
                protected PasswordAuthentication getPasswordAuthentication() {
                    return new PasswordAuthentication("your_email@example.com", "your_password");
                }
            });

            try {
                // 创建邮件消息
                Message message = new MimeMessage(session);
                message.setFrom(new InternetAddress(from));
                message.setRecipients(Message.RecipientType.TO, InternetAddress.parse(to));
                message.setSubject(subject);

                // 创建邮件正文和附件
                MimeBodyPart textPart = new MimeBodyPart();
                textPart.setText(bodyText);

                MimeBodyPart attachmentPart = new MimeBodyPart();
                File file = new File(filePath);
                attachmentPart.attachFile(file);

                // 组装邮件内容
                Multipart multipart = new MimeMultipart();
                multipart.addBodyPart(textPart);
                multipart.addBodyPart(attachmentPart);

                message.setContent(multipart);

                // 发送邮件
                Transport.send(message);

                System.out.println("Email sent successfully.");
            } catch (MessagingException e) {
                e.printStackTrace();
            } catch (java.io.IOException e) {
                e.printStackTrace();
            }
        }
    }

这个示例展示了如何发送一封带附件的邮件。你可以根据需要修改邮件服务器的配置、发件人、收件人、主题、正文和附件路径。