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Java使用javax.mail.jar发送邮件
由于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然，网络安全一再安全我们需要把账号的安全级别提到更高！因此这些对于开发人员也就成了必须掌握的技能！我一直都觉得作为开发人员，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，成为了一个程序猿发展的重中之重！好啦，闲话就说到这里，来点实际的！
当一个开发人员工作到一定程度后，面向对象的思维就会一直在他的老子里围绕！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必不可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);
}
}
这时候我们需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.joyce.mail.main;
import java.util.Date;
import java.util.List;
import java.util.Properties;
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.MimeMessage;
import com.joyce.mail.bean.MailConstant;
import com.joyce.mail.bean.Mail;
import com.joyce.mail.bean.MailAuthenticator;
/**
* @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();
/**
* 邮件服务器登录验证
*/
private transient MailAuthenticator authenticator;
/**
* 邮箱session
*/
private transient Session session;
/**
* 初始化邮件发送器
*
* @param smtpHostName
* SMTP邮件服务器地址
* @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SMTP服务器地址
* @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smtp服务器，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 AddressException, MessagingException {
// 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
message.setContent(content.toString(), MailConstant.MAIL_CONTENT_CHARSET);
// 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: 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 AddressException, MessagingException {
// 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
message.setContent(content.toString(), MailConstant.MAIL_CONTENT_CHARSET);
// 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 AddressException
* @throws MessagingException
*
* @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 AddressException, MessagingException {
send(recipient, mail.getSubject(), mail.getContent());
}
/**
* @Description: 群发邮件
*
* @param recipients
* 收件人们
* @param mail
* 邮件对象
* @throws AddressException
* @throws MessagingException
*
* @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 AddressException, MessagingException {
send(recipients, mail.getSubject(), mail.getContent());
}
}
发送邮件的就在这里了！所有关键代码已完成，开始测试类
/**
* @Description:
*
* @Title: MailTest.java
* @Package com.joyce.test
* @Copyright: Copyright (c) 2014
*
* @author Comsys-LZP
* @date 2014-5-28 上午09:07:52
* @version V2.0
*/
package com.joyce.mail.test;
import com.joyce.mail.bean.Mail;
import com.joyce.mail.bean.MailConstant;
import com.joyce.mail.main.MailSender;
import com.joyce.mail.util.RandomCodeUtil;
/**
* @Description: 发送邮件测试类
*
* @ClassName: MailTest
* @Copyright: Copyright (c) 2014
*
* @author Comsys-LZP
* @date 2014-5-28 上午09:07:52
* @version V2.0
*/
public class MailTest {
public static void main(String[] args) {
try {
MailSender mail = new MailSender(MailConstant.MAIL_USER, MailConstant.MAIL_PWD);
Mail content = new Mail();
content.setSubject(MailConstant.MAIL_TITLE);
content.setContent(MailConstant.getMailContent("欢迎使用******产品，您的激活码为：<span style='color:green;'>"+RandomCodeUtil.randomCode(6)+"</span>，仅本次生效！"));
mail.send("luo201227@163.com", content);
} catch (Exception e) {
e.printStackTrace();
}
}
}
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！是不是很easy呢！完整的demo资源;下载地址： http://download.csdn.net/download/luo201227/7446279
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