第三方-发送邮件工具类

package 

import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Date;
import java.util.Properties;

import javax.mail.Address;
import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.Multipart;
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 org.apache.log4j.Logger;

public class EmailUtil {
	private Logger log = Logger.getLogger(EmailUtil.class);
	private String host;
	private String username;
	private String password;
	private String fromEmail;

	public EmailUtil(String host, String username, String password,
			String fromEmail) {
		this.host = host;
		this.username = username;
		this.password = password;
		this.fromEmail = fromEmail;
	}

	public EmailUtil() {
	}

	/**
	 * 发送邮件
	 * 
	 * @param receiverEmail
	 * @param subject
	 * @param mailContent
	 */
	public boolean sendMail(String[] receiverEmail, String subject,
			String mailContent,String host,String fromEmail,String username,String password) {
		try {
			Properties props = new Properties();// 创建属性对象
			props.put("mail.smtp.host", host);// 设置smtp服务器地址
			props.put("mail.smtp.auth", "true");// 设置服务器smtp需要验证
			props.put("mail.from", fromEmail);
			javax.mail.Session session = javax.mail.Session.getInstance(props,
					null);// 创建新邮件并群发
			// Session session = Session.getDefaultInstance(props);
			// session.setDebug(true);
			MimeMessage message = new MimeMessage(session);// 创建过程对象
			message.setSentDate(new Date());// 设置时间
			InternetAddress[] address = new InternetAddress[receiverEmail.length]; // 群发地址
			for (int i = 0; i < receiverEmail.length; i++) { // 循环发送
				address[i] = new InternetAddress(receiverEmail[i]);
			}
			message.setRecipients(Message.RecipientType.TO, address);
			message.setSubject(subject);// 设置主题
			Multipart multipart = new MimeMultipart();
			BodyPart contentPart = new MimeBodyPart();
			contentPart.setContent(mailContent, "text/html;charset=utf-8");// 设置信件内容
			multipart.addBodyPart(contentPart);
			message.setContent(multipart);
			message.saveChanges();
			Transport transport = session.getTransport("smtp");
			transport.connect(host, username, password);
			transport.sendMessage(message, message.getAllRecipients());
			transport.close();
			return true;
		} catch (Exception e) {
//			log.error(e.getMessage(), e);
			e.printStackTrace();
			return false;
		} 
	}
	/*
	 * 
	 * 
	 */
	public static  boolean nowSendMail(String email ,String content) {
	
//		boolean b = false;
		try {
		
			Properties prop = new Properties();
			String base =Thread.currentThread().getContextClassLoader().getResource("").getPath(); 
//			System.out.println(base);
//			base = base.substring(1, base.length());
//			System.out.println(base);
			InputStream in = new BufferedInputStream (new FileInputStream(base + "email.properties"));
			prop.load(in);
			String host = prop.getProperty("host");
			String username = prop.getProperty("username");
			String password = prop.getProperty("password");
			String fromEmail = prop.getProperty("fromemail");
			String title =new String(prop.getProperty("title").getBytes("ISO8859-1"),"UTF-8"); 
			
			EmailUtil eh = new EmailUtil();
			boolean sendFlag = eh.sendMail(new String[] { email }, title,content,host,fromEmail,username,password);
			if(!sendFlag){
				return false;
			}

		} catch (IOException e) {
			e.printStackTrace();
		}
		return true;
	}

	public static void main(String[] args) {
		EmailUtil.nowSendMail("xx@163.com", "测试内容");
	}
}

email.properties:

host=smtp.163.com
username=xxxx
password=xxxx
fromemail=xxx@163.com