Java使用javax.mail.jar发送邮件并同意发送附件

2022-09-27 09:51:02

因为Java在开发网页上占有绝大优势。所以作为web端的领军人物，譬如发送短信和发送邮件这些就成了必定，网络安全一再安全我们须要把账号的安全级别提到更高。因此这些对于开发者也就成了必须掌握的技能！我一直都认为作为开发者，不怕在开发的过程中遇到多少难题，而是有没有去解决它的勇气和决心，这里多学习就成为了关键，成为了一个程序员发展的重中之重！好啦。闲话就讲到这里。来点实际的。

当一个开发者工作到一定程度后，面向对象的思维就会一直在他的老子里环绕。所以我们先把邮件的常量类、实体类以及工具类等等先该封装的封装，该继承的继承！代码来了。睁大眼睛：

/**

 * @Description:

 *

 * @Title: SimpleMail.java

 * @Package com.joyce.bean

 * @Copyright: Copyright (c) 2014

 *

 * @author Comsys-LZP

 * @date 2014-5-28 上午09:06:51

 * @version V2.0

 */

package com.joyce.mail.bean;

/**

 * @Description:邮件信息类

 *

 * @ClassName: SimpleMail

 * @Copyright: Copyright (c) 2014

 *

 * @author Comsys-LZP

 * @date 2014-5-28 上午09:06:51

 * @version V2.0

 */

public class Mail {

	/**

	 * 主题

	 */

	private String subject;

	/**

	 * 内容

	 */

	private String content;

	/**

	 * @return the subject

	 */

	public String getSubject() {

		return subject;

	}

	/**

	 * @param subject

	 *            the subject to set

	 */

	public void setSubject(String subject) {

		this.subject = subject;

	}

	/**

	 * @return the content

	 */

	public String getContent() {

		return content;

	}

	/**

	 * @param content

	 *            the content to set

	 */

	public void setContent(String content) {

		this.content = content;

	}

}

上面大家看到的就是发送邮件一般不可缺少的邮件标题和邮件内容，作为在邮件使用广泛的那就免不了封装起来了，好啦。接下来咱们看邮箱的登录类： 

/**

 * @Description:

 *

 * @Title: MailAuthenticator.java

 * @Package com.joyce.bean

 * @Copyright: Copyright (c) 2014

 *

 * @author Comsys-LZP

 * @date 2014-5-28 上午08:59:11

 * @version V2.0

 */

package com.joyce.mail.bean;

import javax.mail.Authenticator;

import javax.mail.PasswordAuthentication;

/**

 * @Description: 邮箱登录类

 *

 * @ClassName: MailAuthenticator

 * @Copyright: Copyright (c) 2014

 *

 * @author Comsys-LZP

 * @date 2014-5-28 上午08:59:11

 * @version V2.0

 */

public class MailAuthenticator extends Authenticator {

	/**

     * 用户名（登录邮箱）

     */

    private String username;

    /**

     * 密码

     */

    private String password;

	/**

	 * @return the username

	 */

	public String getUsername() {

		return username;

	}

	/**

	 * @param username the username to set

	 */

	public void setUsername(String username) {

		this.username = username;

	}

	/**

	 * @return the password

	 */

	public String getPassword() {

		return password;

	}

	/**

	 * @param password the password to set

	 */

	public void setPassword(String password) {

		this.password = password;

	}

	/**

	 * @param username

	 * @param password

	 */

	public MailAuthenticator(String username, String password) {

		this.username = username;

		this.password = password;

	}

	@Override

	protected PasswordAuthentication getPasswordAuthentication() {

	    return new PasswordAuthentication(username, password);

    }

}

这时候我们须要的常量类就应该进来了 

package com.joyce.mail.bean;

import java.text.SimpleDateFormat;

import java.util.Date;

/**

 * @Description: 邮件发送常量类

 *

 * @ClassName: MailConstant

 * @Copyright: Copyright (c) 2014

 *

 * @author Comsys-LZP

 * @date 2014-5-28 上午11:01:16

 * @version V2.0

 */

public class MailConstant {

	public static final String MAIL_USER = "luo201227@163.com";

	public static final String MAIL_PWD = "*****";

	public static final boolean MAIL_IFDEBUG = true;

	public static final String MAIL_CONTENT_CHARSET = "text/html;charset=utf-8";

	public static final SimpleDateFormat sdf = new SimpleDateFormat("yyyy年MM月dd日 HH时mm分ss秒 E");

	public static final String MAIL_TITLE = "*********账号激活码" + sdf.format(new Date());//邮件标题

	public static String getMailContent(String content){

		StringBuffer sb = new StringBuffer();

		sb.append("<div style='width:1024px;height:auto;margin:0px auto;background-color:#66CCFF;font-size:14px;font-family:微软雅黑;border-radius:5px;padding:5px;'><center><h1>");

		sb.append("</h1></center><div style='margin-left:20px;margin-bottom:10px;'><b>尊敬的用户。您好！

</b><br/><br/>");

		sb.append("    <b></b>"+content);

		sb.append("</div></div>");

		return sb.toString();

	}

}

关键来了，看看发送邮件的关键部分吧 

/**

 * @Description:

 *

 * @Title: MailSender.java

 * @Package com.joyce.service.impl

 * @Copyright: Copyright (c) 2014

 *

 * @author Comsys-LZP

 * @date 2014-5-28 上午09:03:08

 * @version V2.0

 */

package com.hupu.nac.mail.sender;

import java.io.File;

import java.text.SimpleDateFormat;

import java.util.ArrayList;

import java.util.Date;

import java.util.List;

import java.util.Properties;

import java.util.Vector;

import javax.activation.DataHandler;

import javax.activation.FileDataSource;

import javax.mail.BodyPart;

import javax.mail.Message;

import javax.mail.MessagingException;

import javax.mail.Session;

import javax.mail.Transport;

import javax.mail.internet.AddressException;

import javax.mail.internet.InternetAddress;

import javax.mail.internet.MimeBodyPart;

import javax.mail.internet.MimeMessage;

import javax.mail.internet.MimeMultipart;

import com.hupu.nac.mail.bean.Mail;

import com.hupu.nac.mail.bean.MailAuthenticator;

import com.hupu.nac.mail.bean.MailConstant;

/**

 * @Description:邮件发送类

 *

 * @ClassName: MailSender

 * @Copyright: Copyright (c) 2014

 *

 * @author Comsys-LZP

 * @date 2014-5-28 上午09:03:08

 * @version V2.0

 */

public class MailSender {

	/**

	 * 发送邮件的props文件

	 */

	private final transient Properties props = new Properties();

	/**

	 * 邮件server登录验证

	 */

	private transient MailAuthenticator authenticator;

	/**

	 * 邮箱session

	 */

	private transient Session session;

	/**

	 * 初始化邮件发送器

	 *

	 * @param smtpHostName

	 *            SMTP邮件server地址

	 * @param username

	 *            发送邮件的用户名(地址)

	 * @param password

	 *            发送邮件的密码

	 */

	public MailSender(final String smtpHostName, final String username,

			final String password) {

		init(username, password, smtpHostName);

	}

	/**

	 * 初始化邮件发送器

	 *

	 * @param username

	 *            发送邮件的用户名(地址)，并以此解析SMTPserver地址

	 * @param password

	 *            发送邮件的密码

	 */

	public MailSender(final String username, final String password) {

		// 通过邮箱地址解析出smtpserver。对大多数邮箱都管用

		final String smtpHostName = "smtp." + username.split("@")[1];

		init(username, password, smtpHostName);

	}

	/**

	 * @Description: 初始化

	 *

	 * @param username

	 *            发送邮件的用户名(地址)

	 * @param password

	 *            密码

	 * @param smtpHostName

	 *            SMTP主机地址

	 *

	 * @Title: MailSender.java

	 * @Copyright: Copyright (c) 2014

	 *

	 * @author Comsys-LZP

	 * @date 2014-5-28 上午09:18:31

	 * @version V2.0

	 */

	private void init(String username, String password, String smtpHostName) {

		// 初始化props

		props.put("mail.smtp.host", smtpHostName);

		props.put("mail.smtp.auth", "true");

		// 验证

		authenticator = new MailAuthenticator(username, password);

		// 创建session

		session = Session.getInstance(props, authenticator);

		// 打印一些调试信息

		session.setDebug(MailConstant.MAIL_IFDEBUG);

	}

	/**

	 * @Description: 发送邮件

	 *

	 * @param recipient

	 *            收件人邮箱地址

	 * @param subject

	 *            邮件主题

	 * @param content

	 *            邮件内容

	 * @throws AddressException

	 * @throws MessagingException

	 *

	 * @Title: MailSender.java

	 * @Copyright: Copyright (c) 2014

	 *

	 * @author Comsys-LZP

	 * @date 2014-5-28 上午09:19:16

	 * @version V2.0

	 */

	public void send(String recipient, String subject, Object content) throws Exception {

		send(recipient, subject, content, null);

	}

	/**

	 * 发送邮件

	 *

	 * @param recipient

	 *            收件人邮箱地址

	 * @param subject

	 *            邮件主题

	 * @param content

	 *            邮件内容

	 * @param files

	 *            附件

	 * @throws Exception

	 * @author Joyce.Luo

	 * @date 2014-10-15 上午10:23:09

	 * @version V3.0

	 * @since Tomcat6.0,Jdk1.6

	 * @copyright: Copyright (c) 2014

	 */

	public void send(String recipient, String subject, Object content, Vector<File> files) throws Exception {

		// 创建mime类型邮件

		final MimeMessage message = new MimeMessage(session);

		// 设置发信人

		message.setFrom(new InternetAddress(authenticator.getUsername()));

		// 设置收件人

		message.setRecipient(Message.RecipientType.TO, new InternetAddress(

				recipient));

		// 设置主题

		message.setSubject(subject);

		// 设置邮件内容

		if (null == files || files.size() == 0) {

			message.setContent(content.toString(), MailConstant.MAIL_CONTENT_CHARSET);

		} else {

			//创建 Mimemultipart加入内容(可包括多个附件)

			MimeMultipart multipart = new MimeMultipart();

			//MimeBodyPart(用于信件内容/附件)

			BodyPart bodyPart = new MimeBodyPart();

			bodyPart.setContent(content.toString(), MailConstant.MAIL_CONTENT_CHARSET);

			//加入到MimeMultipart对象中

			multipart.addBodyPart(bodyPart);

			for (int i = 0; i < files.size(); i++) {

				File file = (File) files.elementAt(i);

				String fname = file.getName();

				//创建FileDAtaSource(用于加入附件)

				FileDataSource fds = new FileDataSource(file);

				BodyPart fileBodyPart = new MimeBodyPart();

				// 字符流形式装入文件

				fileBodyPart.setDataHandler(new DataHandler(fds));

				// 设置附件文件名称

				fileBodyPart.setFileName(fname);

				multipart.addBodyPart(fileBodyPart);

				message.setContent(multipart);

			}

		}

		// 设置发信时间

		message.setSentDate(new Date());

		// 存储邮件信息

		message.saveChanges();

//		message.setFileName(filename)

		// 发送邮件

		Transport.send(message);

	}

	/**

	 * @Description: 群发邮件

	 *

	 * @param recipients

	 *            收件人们

	 * @param subject

	 *            主题

	 * @param content

	 *            内容

	 * @throws AddressException

	 * @throws MessagingException

	 *

	 * @Title: MailSender.java

	 * @Copyright: Copyright (c) 2014

	 *

	 * @author Comsys-LZP

	 * @date 2014-5-28 上午09:20:24

	 * @version V2.0

	 */

	public void send(List<String> recipients, String subject, Object content) throws Exception {

		send(recipients, subject, content, null);

	}

	/**

	 * 群发邮件

	 *

	 * @param recipients

	 *            收件人们

	 * @param subject

	 *            主题

	 * @param content

	 *            内容

	 * @param files

	 *            附件

	 * @throws Exception

	 * @author Joyce.Luo

	 * @date 2014-10-15 上午10:26:35

	 * @version V3.0

	 * @since Tomcat6.0,Jdk1.6

	 * @copyright: Copyright (c) 2014

	 */

	public void send(List<String> recipients, String subject, Object content, Vector<File> files) throws Exception {

		// 创建mime类型邮件

		final MimeMessage message = new MimeMessage(session);

		// 设置发信人

		message.setFrom(new InternetAddress(authenticator.getUsername()));

		// 设置收件人们

		final int num = recipients.size();

		InternetAddress[] addresses = new InternetAddress[num];

		for (int i = 0; i < num; i++) {

			addresses[i] = new InternetAddress(recipients.get(i));

		}

		message.setRecipients(Message.RecipientType.TO, addresses);

		// 设置主题

		message.setSubject(subject);

		// 设置邮件内容

		if (null == files || files.size() == 0) {

			message.setContent(content.toString(), MailConstant.MAIL_CONTENT_CHARSET);

		} else {

			 //创建 Mimemultipart加入内容(可包括多个附件)

			MimeMultipart multipart = new MimeMultipart();

			  //MimeBodyPart(用于信件内容/附件)

			BodyPart bodyPart = new MimeBodyPart();

			bodyPart.setContent(content.toString(), MailConstant.MAIL_CONTENT_CHARSET);

			 //加入到MimeMultipart对象中

			multipart.addBodyPart(bodyPart);

			for (int i = 0; i < files.size(); i++) {

				File file = (File) files.elementAt(i);

				String fname = file.getName();

				//创建FileDAtaSource(用于加入附件)

				FileDataSource fds = new FileDataSource(file);

				BodyPart fileBodyPart = new MimeBodyPart();

				// 字符流形式装入文件

				fileBodyPart.setDataHandler(new DataHandler(fds));

				// 设置附件文件名称

				fname = new String(fname.getBytes("UTF-8"), "ISO-8859-1");

				fileBodyPart.setFileName(fname);

				multipart.addBodyPart(fileBodyPart);

				message.setContent(multipart);

			}

		}

		// 设置发信时间

		message.setSentDate(new Date());

		// 存储邮件信息

		message.saveChanges();

		// 发送邮件

		Transport.send(message);

	}

	/**

	 * @Description: 发送邮件

	 *

	 * @param recipient

	 *            收件人邮箱地址

	 * @param mail

	 *            邮件对象

	 * @throws Exception

	 *

	 * @Title: MailSender.java

	 * @Copyright: Copyright (c) 2014

	 *

	 * @author Comsys-LZP

	 * @date 2014-5-28 上午09:20:54

	 * @version V2.0

	 */

	public void send(String recipient, Mail mail) throws Exception {

		send(recipient, mail.getSubject(), mail.getContent());

	}

	/**

	 * @Description: 群发邮件

	 *

	 * @param recipients

	 *            收件人们

	 * @param mail

	 *            邮件对象

	 * @throws Exception

	 *

	 * @Title: MailSender.java

	 * @Copyright: Copyright (c) 2014

	 *

	 * @author Comsys-LZP

	 * @date 2014-5-28 上午09:21:19

	 * @version V2.0

	 */

	public void send(List<String> recipients, Mail mail) throws Exception {

		send(recipients, mail.getSubject(), mail.getContent());

	}

	/**

	 * 群发邮件

	 *

	 * @param recipients

	 *            收件人们

	 * @param mail

	 *            邮件对象

	 * @param files

	 *            附件

	 * @throws Exception

	 * @author Joyce.Luo

	 * @date 2014-10-15 上午10:28:38

	 * @version V3.0

	 * @since Tomcat6.0,Jdk1.6

	 * @copyright: Copyright (c) 2014

	 */

	public void send(List<String> recipients, Mail mail, Vector<File> files) throws Exception {

		send(recipients, mail.getSubject(), mail.getContent(), files);

	}

}

在网页上的激活码或者验证码这类的就不用多说了吧 

/**

 * @Description:

 *

 * @Title: RandomCodeUtil.java

 * @Package com.joyce.mail.util

 * @Copyright: Copyright (c) 2014

 *

 * @author Comsys-LZP

 * @date 2014-5-28 上午11:07:34

 * @version V2.0

 */

package com.joyce.mail.util;

/**

 * @Description: 随机码工具类

 *

 * @ClassName: RandomCodeUtil

 * @Copyright: Copyright (c) 2014

 *

 * @author Comsys-LZP

 * @date 2014-5-28 上午11:07:34

 * @version V2.0

 */

public class RandomCodeUtil {

	/**

	 * 随机码集合

	 */

	private static final String[] randCode = { "0", "1", "2", "3", "4", "5", "6",

			"7", "8", "9", "q", "w", "e", "r", "t", "y", "u", "i", "o", "p",

			"a", "s", "d", "f", "g", "h", "j", "k", "l", "z", "x", "c", "v",

			"b", "n", "m" };

	/**

	 * @Description: 产生指定长度的随机码

	 *

	 * @param codeLength

	 * @return

	 *

	 * @Title: RandomCodeUtil.java

	 * @Copyright: Copyright (c) 2014

	 *

	 * @author Comsys-LZP

	 * @date 2014-5-28 上午11:11:55

	 * @version V2.0

	 */

	public static String randomCode(Integer codeLength) throws Exception {

		try {

			StringBuffer code = new StringBuffer();

			if(null == codeLength || 0 == codeLength){

				codeLength = 4;

			}

			for (int i = 0; i < codeLength; i++) {

				code.append(randCode[(int)Math.floor(Math.random() * 36)]);

			}

			return code.toString();

		} catch (Exception e) {

			throw new RuntimeException("Random Code Error");

		}

	}

	/**

	 * @Description: 生成长度为4的随机码

	 *

	 * @return

	 * @throws Exception

	 *

	 * @Title: RandomCodeUtil.java

	 * @Copyright: Copyright (c) 2014

	 *

	 * @author Comsys-LZP

	 * @date 2014-5-28 下午01:19:33

	 * @version V2.0

	 */

	public static String randomCode() throws Exception{

		return randomCode(null);

	}

}

Ok。利用javax.mail.jar发送邮件就大功告成了！是不是非常easy呢。完整的demo资源;下载地址：http://download.csdn.net/download/luo201227/7446279

有段时间了。来更新一下。事实上也没有什么非常多要说的，仅仅是跟大家提一下。假设有兴趣的，能够去了解一下James邮件server的搭建！

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