1. 配置文件MailServer.properties
#----------------这两个是构建session必须的字段----------
#smtp服务器
mail.smtp.host=smtp.qq.com
#身份验证
mail.smtp.auth=true
#--------------------------------------------------------------
#发送者的邮箱用户名
#发送者的邮箱密码
mail.sender.password=xxxxxxxxxx
2. 不带附件
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeUtility;
public class JavaMail {
/**
* Message对象将存储我们实际发送的电子邮件信息，
* Message对象被作为一个MimeMessage对象来创建并且需要知道应当选择哪一个JavaMail session。
*/
private MimeMessage message;
/**
* Session类代表JavaMail中的一个邮件会话。
* 每一个基于JavaMail的应用程序至少有一个Session（可以有任意多的Session）。
*
* JavaMail需要Properties来创建一个session对象。
* 寻找"mail.smtp.host" 属性值就是发送邮件的主机
* 寻找"mail.smtp.auth" 身份验证，目前免费邮件服务器都需要这一项
*/
private Session session;
/***
* 邮件是既可以被发送也可以被受到。JavaMail使用了两个不同的类来完成这两个功能：Transport 和 Store。
* Transport 是用来发送信息的，而Store用来收信。对于这的教程我们只需要用到Transport对象。
*/
private Transport transport;
private String mailHost="";
private String sender_username="";
private String sender_password="";
private Properties properties = new Properties();
/*
* 初始化方法
*/
public JavaMail(boolean debug) {
InputStream in = JavaMail.class.getResourceAsStream("MailServer.properties");
try {
properties.load(in);
this.mailHost = properties.getProperty("mail.smtp.host");
this.sender_username = properties.getProperty("mail.sender.username");
this.sender_password = properties.getProperty("mail.sender.password");
} catch (IOException e) {
e.printStackTrace();
}
session = Session.getInstance(properties);
session.setDebug(debug);//开启后有调试信息
message = new MimeMessage(session);
}
/**
* 发送邮件
*
* @param subject
* 邮件主题
* @param sendHtml
* 邮件内容
* @param receiveUser
* 收件人地址
*/
public void doSendHtmlEmail(String subject, String sendHtml,
String receiveUser) {
try {
// 发件人
//InternetAddress from = new InternetAddress(sender_username);
// 下面这个是设置发送人的Nick name
InternetAddress from = new InternetAddress(MimeUtility.encodeWord("幻影")+" <"+sender_username+">");
message.setFrom(from);
// 收件人
InternetAddress to = new InternetAddress(receiveUser);
message.setRecipient(Message.RecipientType.TO, to);//还可以有CC、BCC
// 邮件主题
message.setSubject(subject);
String content = sendHtml.toString();
// 邮件内容,也可以使纯文本"text/plain"
message.setContent(content, "text/html;charset=UTF-8");
// 保存邮件
message.saveChanges();
transport = session.getTransport("smtp");
// smtp验证，就是你用来发邮件的邮箱用户名密码
transport.connect(mailHost, sender_username, sender_password);
// 发送
transport.sendMessage(message, message.getAllRecipients());
//System.out.println("send success!");
} catch (Exception e) {
e.printStackTrace();
}finally {
if(transport!=null){
try {
transport.close();
} catch (MessagingException e) {
e.printStackTrace();
}
}
}
}
public static void main(String[] args) {
JavaMail se = new JavaMail(false);
se.doSendHtmlEmail("邮件主题", "邮件内容", "[email protected]");
}
}
3. 带附件
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.MessagingException;
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;
import javax.mail.internet.MimeUtility;
public class JavaMailWithAttachment {
private MimeMessage message;
private Session session;
private Transport transport;
private String mailHost = "";
private String sender_username = "";
private String sender_password = "";
private Properties properties = new Properties();
/*
* 初始化方法
*/
public JavaMailWithAttachment(boolean debug) {
InputStream in = JavaMailWithAttachment.class.getResourceAsStream("MailServer.properties");
try {
properties.load(in);
this.mailHost = properties.getProperty("mail.smtp.host");
this.sender_username = properties.getProperty("mail.sender.username");
this.sender_password = properties.getProperty("mail.sender.password");
} catch (IOException e) {
e.printStackTrace();
}
session = Session.getInstance(properties);
session.setDebug(debug);// 开启后有调试信息
message = new MimeMessage(session);
}
/**
* 发送邮件
*
* @param subject
* 邮件主题
* @param sendHtml
* 邮件内容
* @param receiveUser
* 收件人地址
* @param attachment
* 附件
*/
public void doSendHtmlEmail(String subject, String sendHtml, String receiveUser, File attachment) {
try {
// 发件人
InternetAddress from = new InternetAddress(sender_username);
message.setFrom(from);
// 收件人
InternetAddress to = new InternetAddress(receiveUser);
message.setRecipient(Message.RecipientType.TO, to);
// 邮件主题
message.setSubject(subject);
// 向multipart对象中添加邮件的各个部分内容，包括文本内容和附件
Multipart multipart = new MimeMultipart();
// 添加邮件正文
BodyPart contentPart = new MimeBodyPart();
contentPart.setContent(sendHtml, "text/html;charset=UTF-8");
multipart.addBodyPart(contentPart);
// 添加附件的内容
if (attachment != null) {
BodyPart attachmentBodyPart = new MimeBodyPart();
DataSource source = new FileDataSource(attachment);
attachmentBodyPart.setDataHandler(new DataHandler(source));
// 网上流传的解决文件名乱码的方法，其实用MimeUtility.encodeWord就可以很方便的搞定
// 这里很重要，通过下面的Base64编码的转换可以保证你的中文附件标题名在发送时不会变成乱码
//sun.misc.BASE64Encoder enc = new sun.misc.BASE64Encoder();
//messageBodyPart.setFileName("=?GBK?B?" + enc.encode(attachment.getName().getBytes()) + "?=");
//MimeUtility.encodeWord可以避免文件名乱码
attachmentBodyPart.setFileName(MimeUtility.encodeWord(attachment.getName()));
multipart.addBodyPart(attachmentBodyPart);
}
// 将multipart对象放到message中
message.setContent(multipart);
// 保存邮件
message.saveChanges();
transport = session.getTransport("smtp");
// smtp验证，就是你用来发邮件的邮箱用户名密码
transport.connect(mailHost, sender_username, sender_password);
// 发送
transport.sendMessage(message, message.getAllRecipients());
System.out.println("send success!");
} catch (Exception e) {
e.printStackTrace();
} finally {
if (transport != null) {
try {
transport.close();
} catch (MessagingException e) {
e.printStackTrace();
}
}
}
}
public static void main(String[] args) {
JavaMailWithAttachment se = new JavaMailWithAttachment(true);
File affix = new File("c:\\测试-test.txt");
se.doSendHtmlEmail("邮件主题", "邮件内容", "[email protected]", affix);//
}
}