java发送邮件

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需要依赖的jar

<dependency>
<groupId>javax.mail</groupId>
<artifactId>mail</artifactId>
<version>1.4.7</version>
</dependency>

基本信息类需要继承 javax.mail.Authenticator

package data.test.my.email;

import javax.mail.Authenticator;
import javax.mail.PasswordAuthentication;

public class AuthEmail extends Authenticator {
private String passWord;
private String userName;

public String getPassWord() {
return passWord;
}

public void setPassWord(String passWord) {
this.passWord = passWord;
}

public String getUserName() {
return userName;
}

public void setUserName(String userName) {
this.userName = userName;
}

public AuthEmail(String passWord, String userName) {
this.passWord = passWord;
this.userName = userName;
}

// 该方法必须
public PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(this.userName, this.passWord);
}
}

实际发送类

package data.test.my.email;

import java.util.List;
import java.util.Properties;

import javax.mail.Message.RecipientType;
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;

public class SimpleMailSender {
/**
* 发送邮件的props文件
*/
private final transient Properties props = System.getProperties();
/**
* 邮件服务器登录验证
*/
private transient AuthEmail 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 SimpleMailSender(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 SimpleMailSender(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);

}

/**
* 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
*/
private void init(String username, String password, String smtpHostName) {
// 初始化props
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.host", smtpHostName);
// 验证
authenticator = new AuthEmail(username, password);
// 创建session
session = Session.getInstance(props, authenticator);
}

/**
* 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
*/
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(RecipientType.TO, new InternetAddress(recipient));
// 设置主题
message.setSubject(subject);
// 设置邮件内容
message.setContent(content.toString(), "text/html;charset=utf-8");
// 发送
Transport.send(message);
}

/**
* 群发邮件
*
* @param recipients 收件人们
* @param subject 主题
* @param content 内容
* @throws AddressException
* @throws MessagingException
*/
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(RecipientType.TO, addresses);
// 设置主题
message.setSubject(subject);
// 设置邮件内容
message.setContent(content.toString(), "text/html;charset=utf-8");
// 发送
Transport.send(message);
}

/**
* 发送邮件
*
* @param recipient 收件人邮箱地址
* @param mail 邮件对象
* @throws AddressException
* @throws MessagingException
*/
public void send(String recipient, SimpleMail mail)
throws AddressException, MessagingException {
send(recipient, mail.getSubject(), mail.getContent());
}

/**
* 群发邮件
*
* @param recipients 收件人们
* @param mail 邮件对象
* @throws AddressException
* @throws MessagingException
*/
public void send(List<String> recipients, SimpleMail mail)
throws AddressException, MessagingException {
send(recipients, mail.getSubject(), mail.getContent());
}

}

发送类的工厂该工厂可以没有但相关代码需要更改

package data.test.my.email;

public class MailSendFactory {
/**
* 服务邮箱
*/
private static SimpleMailSender serviceSms = null;

/**
* 获取邮箱
*
* @param type 邮箱类型
* @return 符合类型的邮箱
*/
public static SimpleMailSender getSender(String type) {
if (type.equals("my")) {
if (serviceSms == null) {
serviceSms = new SimpleMailSender("douniwan@166.com", "578945612");
}
return serviceSms;
}
return null;
}
}

主方法测试使用

package data.test.my.email;

import java.util.ArrayList;
import java.util.List;

import javax.mail.MessagingException;
import javax.mail.internet.AddressException;

public class MailEmail {
public static void main(String[] args) {
// 发送邮件
SimpleMailSender sms = MailSendFactory.getSender("my");
List<String> recipients = new ArrayList<String>();
recipients.add("douniwan@qq.com");
recipients.add("douniwan@gmail.com");
try {
for (String recipient : recipients) {
sms.send(recipient, "价格变动", "您关注的物品" + " 六神花露水降价了，由" + "12.3 元降到 13.2 元，降幅达"
+ " -10 元人民币。赶快购物吧。");
}
} catch (AddressException e) {
e.printStackTrace();
} catch (MessagingException e) {
e.printStackTrace();
}
}
}

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