javamail

//要下载jar包javamail-1_3_1.jar,activation.jar
package mail;  
import java.util.Date;  
import java.util.Properties;  
import javax.mail.Address;  
import javax.mail.Authenticator;  
import javax.mail.Message;  
import javax.mail.PasswordAuthentication;  
import javax.mail.Session;  
import javax.mail.Transport;  
import javax.mail.internet.InternetAddress;  
import javax.mail.internet.MimeMessage;  
    
public class Test{  
    // 邮箱服务器  
    private String host = "smtp.163.com";  
    // 这个是你的邮箱用户名  
    private String username = "username";  
    // 你的邮箱密码  
    private String password = "password ";  
         
    private String mail_head_name = "this is head of this mail";  
    
    private String mail_head_value = "this is head of this mail";  
    
    private String mail_to = "[email protected]";  
    
    private String mail_from = "[email protected]";  
    
    private String mail_subject = "this is the subject of this test mail";  
    
    private String mail_body = "this is the mail_body of this test mail";  
    
    private String personalName = "personalName ";  
    
    public Test(){}  
    
    /** 
     * 此段代码用来发送普通电子邮件 
     */ 
    public void send() throws Exception{  
        try{  
            Properties props=new Properties();  
            Authenticator auth = new Email_Autherticator(); // 进行邮件服务器用户认证  
            props.put("mail.smtp.host", host);  
            props.put("mail.smtp.auth", "true");  
            Session session = Session.getDefaultInstance(props, auth);  
            //设置session,和邮件服务器进行通讯。  
            MimeMessage message = new MimeMessage(session);  
            //message.setContent("foobar, "application/x-foobar"); // 设置邮件格式  
            message.setSubject(mail_subject); // 设置邮件主题  
            message.setText(mail_body); // 设置邮件正文  
            message.setHeader(mail_head_name, mail_head_value); // 设置邮件标题  
                 
            message.setSentDate(new Date()); // 设置邮件发送日期  
            Address address = new InternetAddress(mail_from, personalName);  
            message.setFrom(address); // 设置邮件发送者的地址  
            Address toAddress = new InternetAddress(mail_to); // 设置邮件接收方的地址  
            message.addRecipient(Message.RecipientType.TO, toAddress);  
            Transport.send(message); // 发送邮件  
            System.out.println("send success!");  
        }catch (Exception ex){  
            ex.printStackTrace();  
            throw new Exception(ex.getMessage());  
        }  
    }  
    
    /** 
     * 用来进行服务器对用户的认证 
     */ 
    public class Email_Autherticator extends Authenticator{  
        public Email_Autherticator(){  
            super();  
        }  
    
        public Email_Autherticator(String user, String pwd){  
            super();  
            username = user;  
            password = pwd;  
        }  
    
        public PasswordAuthentication getPasswordAuthentication(){  
            return new PasswordAuthentication(username, password);  
        }  
    }  
    
    public static void main(String[] args){  
        Test sendmail = new Test();  
        try{  
            sendmail.send();  
        }catch (Exception ex){  
            ex.printStackTrace();  
        }  
    }  
    
}