下面代码只要稍微修改几个地方就能直接使用， 亲们自取。 Tips: 不要用QQ邮箱发送

JavaEmailTest ：

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Serializable;
import java.util.Date;
import java.util.Properties;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.FutureTask;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;

import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.Address;
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;

/**
 * 
 * @ClassName: JavaEmailTest 
 * @Description: 发送邮件 
 * @author wenniuwuren
 * @date 2014-12-25 下午3:37:27 
 *
 */
public class JavaEmailTest implements Serializable {
	
	private static final long serialVersionUID = -1;
	private static JavaEmailTest bean = new JavaEmailTest();
	
	// 发件人信息：帐号、密码、发件所用SMTP服务器(请到相关邮箱开启SMTP支持)
	private String fromEmailAccount = "email@163.com";// 发件人账号
	private String fromEmailPassword = "123456";// 发件人密码
	private Long affixFileSize = 1048576L * 10l;// 允许发送的最大附件大小(字节)
	private String emailServerIP = "smtp.163.com";// 服务器的IP或域名
	
	
	public static JavaEmailTest getBean(){
		return bean;
	}

	/**
	 * @see 发邮件
	 * @param toEmail 收件人地址
	 * @param title 邮件标题
	 * @param templetPath 模板路径(物理路径)
	 * @param args 模板中需要替换的值
	 * @param affixPath 附件的路径(物理路径)
	 * @return boolean
	 * */
	public Boolean sendEmail(String toEmail, String title, String templetPath,
			String []args, String affixPath) {
		Boolean result = false;
		try {
			Properties properties = new Properties();
			Session session = Session.getInstance(properties, null);
			properties.put("mail.smtp.host", emailServerIP);
			properties.put("mail.smtp.auth", "true");// smtp校验 
			Transport transport = session.getTransport("smtp");
			transport.connect(emailServerIP, fromEmailAccount, fromEmailPassword);
			Message message = new MimeMessage(session);			
			message.setSubject(title);// 邮件主题
			Address address[] = { new InternetAddress(fromEmailAccount) };
			message.addFrom(address);
			message.setRecipient(Message.RecipientType.TO, new InternetAddress(toEmail));// 收件人地址			
			message.setSentDate(new Date());// 发送时间
			
			//start mail正文  
			String content = readTemplet(templetPath);// 读取邮件模板的内容
			for (int i = 0; i < args.length; i++) {
				content = content.replace("{" + i + "}", args[i]);// 替换模板中的占位符
			}
			MimeMultipart multipart = new MimeMultipart();
			MimeBodyPart contentPart = new MimeBodyPart();
			contentPart.setDataHandler(new DataHandler(content, "text/html;charset=gbk"));// 正文内容
			multipart.addBodyPart(contentPart);// 正文
			if (null != affixPath && !"".equals(affixPath)) {
				File file = new File(affixPath);
				if (file.exists() && !file.isDirectory() && file.length() <= affixFileSize) {// 附件存在且小于10M
					MimeBodyPart affixPart = new MimeBodyPart();
					affixPart.setDataHandler(new DataHandler(new FileDataSource(affixPath)));// 读取附件
					affixPart.setFileName(MimeUtility.encodeText(file.getName()));//设置附件标题
					multipart.addBodyPart(affixPart);// 设置附件
				}
			}
			message.setContent(multipart);
			//end mail正文
			
			message.saveChanges();// 保存发送信息
			transport.sendMessage(message, message.getRecipients(Message.RecipientType.TO));// 发送邮件
			transport.close();
			result = true;
		} catch (Exception e) {			
			e.printStackTrace();
		}
		return result;
	}
	
	// 读模板文件
	private String readTemplet(String templetPath) throws IOException {
		InputStream input = null;
		InputStreamReader read = null;
		BufferedReader reader = null;
		
		if (!new File(templetPath).exists()) {
			return "";
		}
		try {
			input = new FileInputStream(templetPath);
			read = new InputStreamReader(input, "UTF-8");
			reader = new BufferedReader(read);
			String line;
            String  result = "";
			while ((line = reader.readLine()) != null) {
				result += line + "\n";
			}
			return result.substring(result.indexOf("<html>"));
		} catch (Exception e) {
			e.printStackTrace();
			return "";
		} finally {
			reader.close();
			read.close();
			input.close();
		}
	}
	
	// 异步执行
	private Boolean asynchronizedExecutor(final String toEmail, final String title, final String templetPath, 
			final String[] emailModel) {
		Boolean flag = Boolean.FALSE;
		FutureTask<Boolean> futureTask = null;
		ExecutorService excutorService = Executors.newCachedThreadPool();
		
		// 执行任务
		futureTask = new FutureTask<Boolean>(new Callable<Boolean>() {
			@Override
			public Boolean call() throws Exception {
				return bean.sendEmail(toEmail, title, templetPath, emailModel, templetPath);// 发送邮件;
			}
			
		});
		excutorService.submit(futureTask);
		try {
			// 任务没超时说明发送成功
			flag = futureTask.get(5L, TimeUnit.SECONDS); 
		} catch (InterruptedException e) {
			futureTask.cancel(true);
			e.printStackTrace();
		} catch (ExecutionException e) {
			futureTask.cancel(true);
			e.printStackTrace();
		} catch (TimeoutException e) {
			futureTask.cancel(true);
			e.printStackTrace();
		} finally {
			excutorService.shutdown();
		}
		return flag;
	}
	
	public static void main(String[] args) {
		try {
			
			final String email = "email1@qq.com;email2@qq.com";// 收件人地址(用;隔开可以发多人邮件)
			final String title = "圣诞快乐";// 邮件标题
			final String url = "https://www.google.com";
			final String img = "http://www.0756jy.cn/uploads/allimg/101210/6_101210102543_1.jpg"; // 图片地址
			final String templetPath = "E:\\你的具体放置地址\\MerryChrismas.txt"; // 邮件正文文档兼附件
			final String[] toEmails = email.split(";");
			
			for (int i = 0; i < toEmails.length; i++) {
				String[] emailModel = new String[]{ "文牛武人", "wenniuwuren", toEmails[i], url, url, url, img};// 邮件模板的参数设置
				System.out.println("发送状态:" + bean.asynchronizedExecutor(toEmails[i], title, templetPath, emailModel));
			}
			
		} catch (Exception e) {
			e.printStackTrace();
		}
	}


}

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gbk" />
<title>圣诞快乐</title>
</head>
<body>
尊敬的 {0}：<br/>
  您好！<br/>
  您的账户出现了异常<br/>
  您的用户名是：{1}<br/>
  您的邮箱地址是：{2}<br/>
  请<a href=http://www.mamicode.com/"{3}">点击或复制这个网址去重新设置您的密码(24小时之内有效)：
>

所依赖的Jar包： mail-1.4.7.jar  

异步发送JavaMail