MyEmail

import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;

import javax.mail.Address;
import javax.mail.MessagingException;
import javax.mail.NoSuchProviderException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class MyEmail
{
    private static Session session; //邮件会话
    private static String host_properties = "mail_host.properties";
    private static Logger logger = LoggerFactory.getLogger(MyEmail.class);
   
    static
    {
        Properties properties = null;
        InputStream in = Thread.currentThread().getContextClassLoader().getResourceAsStream(host_properties);
        try
        {
            properties.load(in);
        } catch(IOException e)
        {
            logger.error("加载邮件服务器信息失败", e.getMessage());
        }
        session = Session.getDefaultInstance(properties, null);//null表示无邮件授权
    }

    public MimeMessage createMimeMessage(String addr)
    {
        MimeMessage message = new MimeMessage(session);
        //在建立了MimeMessage对象，需设置它的各个part，对于MimeMessage类而言，part == 接口
        try
        {
            message.setSubject("It‘s my test - email!");//设置邮件主题
            message.setText("Hello, are u suprized?");
            Address address  = new InternetAddress(addr);//收件人
            message.setFrom(address);
            message.addRecipient(javax.mail.Message.RecipientType.TO, address);
            message.saveChanges();
        } catch(MessagingException e)
        {
            e.printStackTrace();
        }
        
        return message;
    }
    
    public void sendEmail(String addr)
    {
        MimeMessage message = createMimeMessage(addr);
        Transport transport;
        try
        {
            transport = session.getTransport("smtp");
            transport.connect();
            transport.sendMessage(message, message.getAllRecipients());
            transport.close();
        } catch(NoSuchProviderException e)
        {
            e.printStackTrace();
        } catch(MessagingException e)
        {
            e.printStackTrace();
        }
    }
}