https://mail.163.com/
设置授权码
<!-- mail -->
<dependency>
<groupId>javax.mail</groupId>
<artifactId>mail</artifactId>
<version>1.4.7</version>
</dependency>
// (1)继承Authenticator并重写getPasswordAuthentication方法
public class MyAuthenticator extends Authenticator {
String userName = null;
String password = null;
public MyAuthenticator() {
}
public MyAuthenticator(String username, String password) {
this.userName = username;
this.password = password;
}
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(userName, password);
}
}
/**
* (2)发送邮件核心类工具类EmailUtils
*
* 使用javax.mail发送邮件
*
* <p>
* 参数列表:
* 1.邮件服务器
* 2.发件人邮箱
* 3.发件人的授权密码
* 4.邮件主题
* 5.收件人，多个收件人以半角逗号分隔
* 6.抄送，多个抄送以半角逗号分隔
* 7.正文，可以用html格式的哟
* </p>
*/
public class EmailUtils {
private String smtpHost; // 邮件服务器地址
private String sendUserName; // 发件人的用户名
private String sendUserPass; // 发件人密码
private MimeMessage mimeMsg; // 邮件对象
private Multipart mp;// 附件添加的组件
private void init() {
// 创建一个密码验证器
MyAuthenticator authenticator = null;
authenticator = new MyAuthenticator(sendUserName, sendUserPass);
// 实例化Properties对象
Properties props = System.getProperties();
props.put("mail.smtp.host", smtpHost);
props.put("mail.smtp.auth", "true"); // 需要身份验证
props.put("mail.smtp.starttls.enable", "true");
// 建立会话
Session session = Session.getDefaultInstance(props, authenticator);
// 置true可以在控制台（console)上看到发送邮件的过程
session.setDebug(true);
// 用session对象来创建并初始化邮件对象
mimeMsg = new MimeMessage(session);
// 生成附件组件的实例
mp = new MimeMultipart();
}
private EmailUtils(String smtpHost, String sendUserName, String sendUserPass, String to, String cc, String mailSubject,
String mailBody, List<String> attachments) {
this.smtpHost = smtpHost;
this.sendUserName = sendUserName;
this.sendUserPass = sendUserPass;
init();
setFrom(sendUserName);
setTo(to);
setCC(cc);
setBody(mailBody);
setSubject(mailSubject);
if (attachments != null) {
for (String attachment : attachments) {
addFileAffix(attachment);
}
}
}
/**
* 邮件实体
*
* @param smtpHost ????邮件服务器地址
* @param sendUserName 发件邮件地址
* @param sendUserPass 发件邮箱密码
* @param to ??????????收件人，多个邮箱地址以半角逗号分隔
* @param cc ??????????抄送，多个邮箱地址以半角逗号分隔
* @param mailSubject ?邮件主题
* @param mailBody ????邮件正文
* @param attachments ?附件路径
* @return
*/
public static EmailUtils entity(String smtpHost, String sendUserName, String sendUserPass, String to, String cc,
String mailSubject, String mailBody, List<String> attachments) {
return new EmailUtils(smtpHost, sendUserName, sendUserPass, to, cc, mailSubject, mailBody, attachments);
}
/**
* 设置邮件主题
*
* @param mailSubject
* @return
*/
private boolean setSubject(String mailSubject) {
try {
mimeMsg.setSubject(mailSubject);
} catch (Exception e) {
return false;
}
return true;
}
/**
* 设置邮件内容,并设置其为文本格式或HTML文件格式，编码方式为UTF-8
*
* @param mailBody
* @return
*/
private boolean setBody(String mailBody) {
try {
BodyPart bp = new MimeBodyPart();
bp.setContent("<meta http-equiv=Content-Type content=text/html; charset=UTF-8>" + mailBody,
"text/html;charset=UTF-8");
// 在组件上添加邮件文本
mp.addBodyPart(bp);
} catch (Exception e) {
System.err.println("设置邮件正文时发生错误！" + e);
return false;
}
return true;
}
/**
* 添加一个附件
*
* @param filename 邮件附件的地址，只能是本机地址而不能是网络地址，否则抛出异常
* @return
*/
public boolean addFileAffix(String filename) {
try {
if (filename != null && filename.length() > 0) {
BodyPart bp = new MimeBodyPart();
FileDataSource fileds = new FileDataSource(filename);
bp.setDataHandler(new DataHandler(fileds));
bp.setFileName(MimeUtility.encodeText(fileds.getName(), "utf-8", null)); // 解决附件名称乱码
mp.addBodyPart(bp);// 添加附件
}
} catch (Exception e) {
System.err.println("增加邮件附件：" + filename + "发生错误！" + e);
return false;
}
return true;
}
/**
* 设置发件人地址
*
* @param from 发件人地址
* @return
*/
private boolean setFrom(String from) {
try {
mimeMsg.setFrom(new InternetAddress(from));
} catch (Exception e) {
return false;
}
return true;
}
/**
* 设置收件人地址
*
* @param to 收件人的地址
* @return
*/
private boolean setTo(String to) {
if (to == null)
return false;
try {
mimeMsg.setRecipients(Message.RecipientType.TO, InternetAddress.parse(to));
} catch (Exception e) {
return false;
}
return true;
}
/**
* 设置抄送
*
* @param cc
* @return
*/
private boolean setCC(String cc) {
if (cc == null) {
return false;
}
try {
mimeMsg.setRecipients(Message.RecipientType.CC, InternetAddress.parse(cc));
} catch (Exception e) {
return false;
}
return true;
}
/**
* no object DCH for MIME type multipart/mixed报错解决
*/
private void solveError() {
MailcapCommandMap mc = (MailcapCommandMap) CommandMap.getDefaultCommandMap();
mc.addMailcap("text/html;; x-java-content-handler=com.sun.mail.handlers.text_html");
mc.addMailcap("text/xml;; x-java-content-handler=com.sun.mail.handlers.text_xml");
mc.addMailcap("text/plain;; x-java-content-handler=com.sun.mail.handlers.text_plain");
mc.addMailcap(
"multipart/*;; x-java-content-handler=com.sun.mail.handlers.multipart_mixed; x-java-fallback-entry=true");
mc.addMailcap("message/rfc822;; x-java-content-handler=com.sun.mail.handlers.message_rfc822");
CommandMap.setDefaultCommandMap(mc);
Thread.currentThread().setContextClassLoader(EmailUtils.class.getClassLoader());
}
/**
* 发送邮件
*
* @return
*/
public boolean send() throws Exception {
mimeMsg.setContent(mp);
mimeMsg.saveChanges();
System.out.println("正在发送邮件....");
solveError();
Transport.send(mimeMsg);
System.out.println("发送邮件成功！");
return true;
}
}
// (3) 测试
public class MailApplicationTests {
public static void main(String[] args) throws Exception {
//163邮箱测试
String userName = "yulin_zhaoyang@163.com"; // 发件人邮箱
String password = "XXXXXXXXXXXX"; // 发件人密码，其实不一定是邮箱的登录密码，对于QQ邮箱来说是SMTP服务的授权文本
String smtpHost = "smtp.163.com"; // 邮件服务器
String to = "931701567@qq.com"; // 收件人，多个收件人以半角逗号分隔
String cc = "112834164@qq.com"; // 抄送，多个抄送以半角逗号分隔
String subject = "这是邮件的主题 163"; // 主题
String body = "这是邮件的正文163"; // 正文，可以用html格式的哟
List<String> attachments = Arrays.asList("D:/a.txt", "D:/b.txt"); // 附件的路径，多个附件也不怕
EmailUtils emailUtils = EmailUtils.entity(smtpHost, userName, password, to, cc, subject, body, attachments);
emailUtils.send(); // 发送！
}
}