java mail 发邮件，接邮件，发送邮件附件实现程序

时间：2012-09-26 编辑：简简单单来源：一聚教程网

送邮件：

Java代码

代码如下

复制代码

public class JavaMailTest {

    public static void main(String args[]) throws MessagingException {
        String smtpHost = "smtp.sohu.com";
        String from = "javamailfrom@sohu.com";
        String to = "javamailto@sohu.com";

        Properties properties = System.getProperties();
        Session session = Session.getInstance(properties);

        MimeMessage message = new MimeMessage(session);
        message.setFrom(new InternetAddress(from));
        message.addRecipient(Message.RecipientType.TO, new InternetAddress(to));
        message.setSubject("JavaMail Example");
        message.setText("Did it work?");
        Transport transport = session.getTransport("smtp");
        transport.connect(smtpHost, "", "");

        transport.sendMessage(message, message.getAllRecipients());
        transport.close();
    }
}

可能会出现如下错误

'550 5.1.1 : Recipient address rejected: User unknown in virtual mailbox table',

你发送的帐号在邮件系统内不存在,请检查你的邮件地址是否输入有误

'554 5.7.1 : Sender address rejected: Access denied',

你的邮箱是内部帐号，你所发送的地址不在授权域之内

'553 5.7.1 : Sender address rejected: not logged in',

发送邮件需要SMTP身份验证，你的帐号SMTP身份验证部分没有设置正确，请检查配置

'454 4.7.1 : Client host rejected: Access denied'

你的IP被管理员屏蔽，请检查你部的机器是否被感染病毒自动发送邮件

接收邮件：

Java代码

代码如下

复制代码

public class JavaMailReadMailTest {

    public static void main(String args[]) throws MessagingException,
            IOException {
        String pop3Host = "pop3.sohu.com";
        String user = "******@sohu.com";
        String pass = "******";
        Properties properties = System.getProperties();
        Session session = Session.getInstance(properties);
        Store store = session.getStore("pop3");
        store.connect(pop3Host, user, pass);

        Folder folder = store.getFolder("INBOX");
        folder.open(Folder.READ_ONLY);
        Message[] messages = folder.getMessages();

        for (int i = 0; i < messages.length; i++) {
            System.out.println("nFrom:" + messages[i].getFrom()[0]+ "n"
                    + "Subject:" + messages[i].getSubject());
            ContentType ct = new ContentType(messages[i].getContentType());
            if ("text/html".equalsIgnoreCase(ct.getBaseType())) {
                BufferedReader reader = new BufferedReader(
                        new InputStreamReader(messages[i].getInputStream()));
                String s;
                while ((s = reader.readLine()) != null) {
                    System.out.println(s);
                }
            } else {
                Object o = messages[i].getContent();
                if (o instanceof String) {
                    System.out.println(o);
                } else {
                    System.out.println(messages[i].getContentType());
                    if (o instanceof MimeMultipart) {
                        MimeMultipart mp = (MimeMultipart) o;
                        for (int j = 0; j < mp.getCount(); ++j) {
                            MimeBodyPart bp = (MimeBodyPart) mp.getBodyPart(j);
                            System.out.println(bp.getContentType());
                        }
                    }
                }
            }

        }
    }
}

发送附件：

Java代码

代码如下

复制代码

public class SendFile {
    public static void main(String args[]) throws Exception {
        String host = "smtp.sohu.com";
        String from = "*******";
        String to = "*******";
        String fileAttachment = "d:\FileName";

        Properties properties = System.getProperties();

        Session session = Session.getInstance(properties, null);

        MimeMessage message = new MimeMessage(session);
        message.setFrom(new InternetAddress(from));
        message.addRecipient(Message.RecipientType.TO, new InternetAddress(to));
        message.setSubject("SendFile");

        MimeBodyPart messageBodyPart = new MimeBodyPart();

        messageBodyPart.setText("Hi");

        Multipart multipart = new MimeMultipart();
        multipart.addBodyPart(messageBodyPart);

        messageBodyPart = new MimeBodyPart();
        DataSource source = new FileDataSource(fileAttachment);
        messageBodyPart.setDataHandler(new DataHandler(source));
        messageBodyPart.setFileName(fileAttachment);
        multipart.addBodyPart(messageBodyPart);

        message.setContent(multipart);

        Transport transport = session.getTransport("smtp");
        transport.connect(host, "", "");

        transport.sendMessage(message, message.getAllRecipients());

        transport.close();
    }
}

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