java发送email

package com.assess.util;

import java.io.File;
import java.util.ArrayList;
import java.util.List;
import java.util.Properties;

import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.Message;
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;
import javax.mail.internet.MimeUtility;

public class SendmailUtil {
    /*
     * 参考此文章
     * http://www.cnblogs.com/xdp-gacl/p/4216311.html
     * 
     * 
     * smtp.sohu.com 搜狐邮箱主机
     * smtp.163.com 163邮箱主机,默认端口25
     * smtp.qq.com qq邮箱主机
     * */
    
    /**
     * from 发件人邮箱
     * passwd 发件人邮箱密码
     * to 收件人邮箱
     * subject 主题
     * txt 内容
     * files 附件
     * host 服务主机 
     * protocol 协议 (smtp)
     * auth 身份验证(true)
     * */
     public static boolean send(String from,String passwd,String to,
                                 String subject, String txt,List<File> files,
                                 String host,String protocol,String auth) {
            
         try { 
            Properties prop = new Properties();
            prop.setProperty("mail.host", host);
            prop.setProperty("mail.transport.protocol", protocol);
            prop.setProperty("mail.smtp.auth", auth);
            //使用JavaMail发送邮件的5个步骤
            //1、创建session
            Session session = Session.getInstance(prop);
            //开启Session的debug模式，这样就可以查看到程序发送Email的运行状态
            session.setDebug(true);
            //2、通过session得到transport对象
            Transport ts = session.getTransport();
            //3、使用邮箱的用户名和密码连上邮件服务器，
            //    发送邮件时，发件人需要提交邮箱的用户名和密码给smtp服务器，
            //    用户名和密码都通过验证之后才能够正常发送邮件给收件人。
            ts.connect(host, from, passwd);
            //4、创建邮件
           Message message = createMixedMail(session, from, to, subject, txt, files);
            //5、发送邮件
            ts.sendMessage(message, message.getAllRecipients());
            ts.close();
            
         }catch(Exception e) {
             return false;
         }
            return true;
        }
        
        /**
         * 发送文字、附件的邮件
         * */
        public static MimeMessage createMixedMail(Session session,String from,String to,String subject,String txt,List<File> files) throws Exception {
            //创建邮件
            MimeMessage message = new MimeMessage(session);
            
            //设置邮件的基本信息
            message.setFrom(new InternetAddress(from));
            message.setRecipient(Message.RecipientType.TO, new InternetAddress(to));
            message.setSubject(subject);
            
            //正文
            MimeBodyPart text = new MimeBodyPart();
            text.setContent(txt,"text/html;charset=UTF-8");
            
            //图片
//            MimeBodyPart image = new MimeBodyPart();
//            image.setDataHandler(new DataHandler(new FileDataSource("src\check.png")));
//            image.setContentID("aaa.jpg");
            
            //附件
            List<MimeBodyPart> mimeBodyParts = new ArrayList<MimeBodyPart>();
            for(int i=0;i<files.size();i++) {
                MimeBodyPart attach = new MimeBodyPart();
                DataHandler dh = new DataHandler(new FileDataSource(files.get(i)));
                attach.setDataHandler(dh);
                attach.setFileName(MimeUtility.encodeWord(dh.getName()));
                mimeBodyParts.add(attach);
            }
            
            //描述关系:正文和图片
            MimeMultipart mp1 = new MimeMultipart();
            mp1.addBodyPart(text);
           // mp1.addBodyPart(image);
            mp1.setSubType("related");
            
            //描述关系:正文和附件
            MimeMultipart mp2 = new MimeMultipart();
            for(int i=0;i<mimeBodyParts.size();i++) {
                mp2.addBodyPart(mimeBodyParts.get(i));
            }
          //  mp2.addBodyPart(attach2);
            
            //代表正文的bodypart
            MimeBodyPart content = new MimeBodyPart();
            content.setContent(mp1);
            mp2.addBodyPart(content);
            mp2.setSubType("mixed");
            
            message.setContent(mp2);
            message.saveChanges();
            
           // message.writeTo(new FileOutputStream("D:\MixedMail.eml"));
            //返回创建好的的邮件
            return message;
        }
}

package com.assess.util;

import java.io.File;
import java.util.ArrayList;
import java.util.List;

public class Main {
    
    private static final String HOST = "smtp.163.com";
    private static final String PROTOCOL = "smtp";
    private static final String AUTH = "true";
    
    private static final String USER_NAME = "135****920@163.com";//发件人邮箱
    private static final String PASSWORD = "1234";//密码
    private static final String RECRIVER ="139****893@qq.com";//接收人邮箱
    
    public static void main(String[] args) {
        List<File> files = new ArrayList<File>();
        File f = new File("src\备忘.rar");
        File f2 = new File("src\check.png");
        files.add(f);
        files.add(f2);
        if(SendmailUtil.send(USER_NAME, PASSWORD, RECRIVER, "主题信息", "内容信息", files, HOST, PROTOCOL, AUTH)) {
            
            System.out.println("success");
        }
    }

}