java发送邮件

1.导入 activation.jar   mail.jar

SendEmail 类：

package mail2;

 
import java.util.Properties;

import javax.mail.Address;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
 
/** 
 * @author Sech 
 *  
 */ 
public class SendEmail {  
 
    /** 
     *  
     */ 
    public SendEmail() {  
        // TODO Auto-generated constructor stub  
    }  
 
    /** 
     * 发送Email 
     */ 
    public void Send(String content) {  
        try {  
            String host = "127.0.0.1";  
            String from = "[email protected]";// 发送的邮箱  
            String to = "[email protected]";// 接收的邮箱  
            String userName = "111";// 发送邮箱的用户名  
            String password = "123";// 发送邮箱的密码  
            Properties props = new Properties();  
 
            props.put("mail.smtp.host", host);  
            props.put("mail.smtp.auth", "true");  
            props.put("username", userName);  
        //    props.put("mail.smtp.port", "587");
        /**
         *     props.setProperty("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");   
                  props.setProperty("mail.smtp.socketFactory.fallback", "false");   
                        props.setProperty("mail.smtp.port", "465");   
                        props.setProperty("mail.smtp.socketFactory.port", "465");  
         */

            props.put("password", password);  
 
            SmtpAuth sa = new SmtpAuth();  
            sa.setUserinfo(userName, password);  
            Session session = Session.getDefaultInstance(props, sa);  
            // Session session = Session.getDefaultInstance(props, null);  
            session.setDebug(true);  
 
            MimeMessage message = new MimeMessage(session);  
 
            message.setSubject("网站回复");  
 
            message.setContent(content, "text/plain");  
 
            Address sendaddress = new InternetAddress(from);  
 
            Address toAddress = new InternetAddress(to);  
 
            message.setFrom(sendaddress);  
            message.setRecipient(Message.RecipientType.TO, toAddress);  
 
            message.saveChanges(); // implicit with send()  
 
            Transport.send(message);  
            // System.out.println("success!");  
        } catch (MessagingException e) {  
            System.out.println("send" + e.getMessage());  
        }  
    }  
   
} 

 

2.SmtpAuth类  验证的，装账号和密码的

package mail2;

 
import javax.mail.Authenticator;
 
/** 
 * @author Sech 
 *  
 */ 
public class SmtpAuth extends Authenticator {  
    private String user, password;  
 
    public void setUserinfo(String getuser, String getpassword) {  
        user = getuser;  
        password = getpassword;  
    }  
 
    protected javax.mail.PasswordAuthentication getPasswordAuthentication() {  
        return new javax.mail.PasswordAuthentication(user, password);  
    }  
   
   
}