package com;

import java.util.Properties;

import javax.mail.Address;
import javax.mail.BodyPart;
import javax.mail.Message;
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;

/*
 * 发送邮件的类
 * 引入mail.jar包
 */
public class Mail {

	private MimeMessage mimeMsg;// 邮件对象
	private Session session; // 邮件会话对象
	private Properties props; // 系统属性,即SMTP服务器
	private String username; // 用户名
	private String password; // 密码
	private Multipart mp; // 对象用于封装邮件内容

	// 构造方法
	public Mail(String smtp) {
		setSmtpHost(smtp);
		createMimeMessage();
	}

	// 设置邮件发送服务器
	public void setSmtpHost(String hostName) {
		System.out.println("设置系统属性：mail.smtp.host=" + hostName);
		if (props == null) {
			props = System.getProperties();// 获得系统属性对象
		}
		props.put("mail.smtp.host", hostName);// 设置SMTP主机
	}

	// 创建MIME邮件对象
	public boolean createMimeMessage() {
		try {
			System.out.println("准备获取邮件会话对象！");
			session = Session.getDefaultInstance(props, null);
		} catch (Exception e) {
			System.out.println("获取邮件会话对象时发生错误！" + e);
			return false;
		}
		System.out.println("准备创建MIME邮件对象！");
		try {
			mimeMsg = new MimeMessage(session);
			mp = new MimeMultipart();

			return true;
		} catch (Exception e) {
			System.out.println("创建MIME邮件对象失败！" + e);
			return false;
		}
	}

	/*
	 * 设置SMTP是否需要验证
	 */
	public void setNeedAuth(boolean need) {
		System.out.println("设置smtp身份认证：mail.smtp.auth = " + need);
		if (props == null)
			props = System.getProperties();
		if (need) {
			props.put("mail.smtp.auth", "true");
		} else {
			props.put("mail.smtp.auth", "false");
		}
	}

	public void setNamePass(String name, String pass) {
		username = name;
		password = pass;
	}

	/*
	 * 设置邮件主题
	 */
	public boolean setSubject(String mailSubject) {
		System.out.println("设置邮件主题！");
		try {
			mimeMsg.setSubject(mailSubject);
			return true;
		} catch (Exception e) {
			System.err.println("设置邮件主题发生错误！");
			return false;
		}
	}

	/*
	 * 设置邮件正文
	 */
	public boolean setBody(String mailBody) {
		try {
			BodyPart bp = new MimeBodyPart();
			bp.setContent("" + mailBody, "text/html;charset=UTF-8");
			mp.addBodyPart(bp);

			return true;
		} catch (Exception e) {
			System.err.println("设置邮件正文时发生错误！" + e);
			return false;
		}
	}

	/*
	 * 设置发信人
	 */
	public boolean setFrom(String from) {
		System.out.println("设置发信人！");
		try {
			mimeMsg.setFrom(new InternetAddress(from)); // 设置发信人
			return true;
		} catch (Exception e) {
			return false;
		}
	}

	/*
	 * 设置收信人
	 */
	public boolean setTo(String to) {
		if (to == null)
			return false;
		System.out.println("设置收信人！");
		try {
			mimeMsg.setRecipients(Message.RecipientType.TO,
					InternetAddress.parse(to));
			return true;
		} catch (Exception e) {
			return false;
		}
	}

	/*
	 * 设置抄送人
	 */
	public boolean setCopyTo(String copyto) {
		if (copyto == null)
			return false;
		try {
			mimeMsg.setRecipients(Message.RecipientType.CC,
					(Address[]) InternetAddress.parse(copyto));
			return true;
		} catch (Exception e) {
			return false;
		}
	}

	/*
	 * 发送邮件
	 */
	public boolean sendOut() {
		try {
			mimeMsg.setContent(mp);
			mimeMsg.saveChanges();
			System.out.println("正在发送邮件....");

			Session mailSession = Session.getInstance(props, null);
			Transport transport = mailSession.getTransport("smtp");
			transport.connect((String) props.get("mail.smtp.host"), username,
					password);
			transport.sendMessage(mimeMsg,
					mimeMsg.getRecipients(Message.RecipientType.TO));

			System.out.println("发送邮件成功！");
			transport.close();

			return true;
		} catch (Exception e) {
			System.err.println("邮件发送失败！" + e);
			return false;
		}
	}

	/*
	 * 调用sendOut方法完成邮件发送
	 */
	public static boolean sendAndCc(String smtp, String from, String to,
			String copyto, String subject, String content, String username,
			String password) {
		Mail theMail = new Mail(smtp);
		theMail.setNeedAuth(true); // 需要验证

		if (!theMail.setSubject(subject))
			return false;
		if (!theMail.setBody(content))
			return false;
		if (!theMail.setTo(to))
			return false;
		if (!theMail.setCopyTo(copyto))
			return false;
		if (!theMail.setFrom(from))
			return false;
		theMail.setNamePass(username, password);

		if (!theMail.sendOut())
			return false;
		return true;
	}
}