原文链接 https://blog.csdn.net/sdaujsj1/article/details/79248469
pom
<!-- https://mvnrepository.com/artifact/javax.mail/mail -->
<!-- 发邮件 --> <dependency> <groupId>javax.mail</groupId> <artifactId>mail</artifactId> <version>1.4.7</version> </dependency>
bean:
package com.fighting.email;
import java.io.FileInputStream;
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.Address;
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.util.ByteArrayDataSource;
public class Mail {
private MimeMessage mimeMessage;//Mime邮件对象
private Session session;//邮件会话对象
private Properties properties;//系统属性
private boolean needAuth = false;//smtp是否需要认证
//smtp认证的用户名和密码
private String username;
private String password;
private Multipart multipart;//Multipart对象 邮件内容 标题 附件等内容添加到这里面 然后生成MimeMessage对象
/**
* 构造方法
* @param smtp
*/
public Mail(String smtp){
setSmtpHost(smtp);
createMimeMessage();
}
/**
* 创建MimeMessage邮件对象
* @return
*/
public boolean createMimeMessage() {
//获取邮件会话对象
session = Session.getDefaultInstance(properties, null);
//创建Mime邮件对象
mimeMessage = new MimeMessage(session);
multipart = new MimeMultipart();
return true;
}
/**
* 设置邮件发送服务器
* @param hostName
*/
public void setSmtpHost(String hostName) {
if (properties==null){
properties=System.getProperties();//获得系统属性对象
}
properties.put("mail.smtp.host",hostName);//设置smtp主机
}
/**
* 设置smtp是否需要认证
* @param need
*/
public void setNeedAuth(boolean need){
if (properties == null){
properties = System.getProperties();
}
if (need){
properties.put("mail.smtp.auth","true");
}else {
properties.put("mail.smtp.auth","false");
}
}
/**
* 发件人的用户名和密码 163的用户名就是邮箱的前缀
* @param username
* @param password
*/
public void setNamePassword(String username,String password){
this.username = username;
this.password = password;
}
/**
* 邮件主题
* @param subject
* @return
*/
public boolean setSubject(String subject){
try {
mimeMessage.setSubject(subject);
return true;
} catch (MessagingException e) {
e.printStackTrace();
return false;
}
}
/**
* 邮件正文
* @param mailBody
* @return
*/
public boolean setBody(String mailBody){
BodyPart bodyPart = new MimeBodyPart();
try {
bodyPart.setContent(""+mailBody,"text/html;charset=utf-8");
multipart.addBodyPart(bodyPart);
return true;
} catch (MessagingException e) {
e.printStackTrace();
return false;
}
}
/**
* 邮件正文（带图片的）
* @param mailBody
* @param imgFile
* @return
*/
public boolean setBodyWithImg(String mailBody,String imgFile){
BodyPart content = new MimeBodyPart();
BodyPart img = new MimeBodyPart();
try {
multipart.addBodyPart(content);
multipart.addBodyPart(img);
ByteArrayDataSource byteArrayDataSource = new ByteArrayDataSource(new FileInputStream(imgFile),"application/octet-stream");
// DataHandler imgDataHandler = new DataHandler(new FileDataSource(imgFile));
DataHandler imgDataHandler = new DataHandler(byteArrayDataSource);
img.setDataHandler(imgDataHandler);
// img.setContent
String imgFilename = imgFile.substring(imgFile.lastIndexOf("/")+1);//图片文件名
//注意：Content-ID的属性值一定要加上<>，不能直接写文件名
String headerValue = "<"+imgFilename+">";
img.setHeader("Content-ID",headerValue);
//为图片设置文件名，有的邮箱会把html内嵌的图片也当成附件
img.setFileName(imgFilename);
//在html代码中要想显示刚才的图片名 src里不能直接写Content-ID的值，要用cid:这种方式
mailBody+="<img src='cid:"+imgFilename+"' alt='picture' width='100px' height='100px' />,骚吗?";
content.setContent(""+mailBody,"text/html;charset=utf-8");
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* 邮件添加附件
* @param file
* @return
*/
public boolean addFileAffix(String file){
String[] fileArray = file.split(",");
for (int i = 0; i < fileArray.length; i++) {
FileDataSource fileDataSource = new FileDataSource(fileArray[i]);
try {
BodyPart bodyPart = new MimeBodyPart();
bodyPart.setDataHandler(new DataHandler(fileDataSource));
bodyPart.setFileName(fileDataSource.getName());
multipart.addBodyPart(bodyPart);
} catch (MessagingException e) {
e.printStackTrace();
return false;
}
}
return true;
}
/**
* 发件人邮箱
* @param from
* @return
*/
public boolean setFrom(String from){
try {
mimeMessage.setFrom(new InternetAddress(from));
return true;
} catch (MessagingException e) {
e.printStackTrace();
return false;
}
}
/**
* 收件人邮箱
* @param to
* @return
*/
public boolean setTo(String to){
if (to==null)
return false;
try {
//电子邮件可以有三种类型的收件人，分别to、cc（carbon copy）和bcc（blind carbon copy），分别是收件人、抄送、密送
mimeMessage.setRecipients(Message.RecipientType.TO,InternetAddress.parse(to));
return true;
} catch (MessagingException e) {
e.printStackTrace();
return false;
}
}
/**
* 抄送人邮箱 字符串中逗号分开
* @param copyto
* @return
*/
public boolean setCopyTo(String copyto){
if (copyto == null)
return false;
try {
mimeMessage.setRecipients(Message.RecipientType.CC,(Address[]) InternetAddress.parse(copyto));
return true;
} catch (MessagingException e) {
e.printStackTrace();
return false;
}
}
/**
* 发送
* @param copyto
* @return
*/
public boolean sendOut(String copyto){
try {
//multipart放入message
mimeMessage.setContent(multipart);
mimeMessage.saveChanges();
Session mailSession = Session.getInstance(properties, null);
Transport transport = mailSession.getTransport("smtp");
transport.connect(properties.getProperty("mail.smtp.host"),username,password);
transport.sendMessage(mimeMessage,mimeMessage.getRecipients(Message.RecipientType.TO));
if (copyto!=null){
transport.sendMessage(mimeMessage,mimeMessage.getRecipients(Message.RecipientType.CC));
}
System.out.println("邮件发送成功");
transport.close();
return true;
} catch (MessagingException e) {
System.out.println("邮件发送失败");
e.printStackTrace();
return false;
}
}
/**
* 该方法调用上边定义的方法 选择性的组合 完成邮件发送
* 普普通通的一对一发送
* @param smtp
* @param from
* @param to
* @param subject
* @param content
* @param username
* @param password
* @return
*/
public static boolean send(String smtp,String from,String to,String subject,
String content,String username,String password){
Mail mail = new Mail(smtp);
mail.setNeedAuth(true);//需要认证
if (!mail.setSubject(subject))
return false;
if (!mail.setBody(content))
return false;
if (!mail.setFrom(from))
return false;
if (!mail.setTo(to)){
return false;
}
mail.setNamePassword(username,password);
if (!mail.sendOut(null))
return false;
return true;
}
/**
* 带附件的正文有图片的带有抄送的邮件
* @return
*/
public static boolean sendAndCcWithFile(String smtp,String from,String to,String subject,
String content,String imageFile,String username,String password,String copyto,String filename){
Mail mail = new Mail(smtp);
mail.setNeedAuth(true);//需要认证
if (!mail.setSubject(subject)) {
return false;
}
if (!mail.setBodyWithImg(content,imageFile)) {
return false;
}
if (!mail.addFileAffix(filename))
return false;
if (!mail.setFrom(from)) {
return false;
}
if (!mail.setTo(to)){
return false;
}
if (!mail.setCopyTo(copyto)) {
return false;
}
mail.setNamePassword(username,password);
if (!mail.sendOut(copyto))
return false;
return true;
}
}
Test类
package com.fighting.email;
import javax.mail.internet.MimeBodyPart;
public class MailTest {
public static void main(String[] args) {
String smtp ="smtp.qq.com";//SMTP服务器地址
String from = "[email protected]";
String to = "[email protected]";
String copyto="[email protected],[email protected]";
String subject = " 狗年大吉";
// String content ="<h1>狗年大吉吧</h1>";
MimeBodyPart img = new MimeBodyPart();
String content ="<div style='color:red;font-size:18px;'>从QQ发来的邮件</div>我这里有一张自拍";
//正文中的图片
String imgFile="E:\\picture\\study\\401.PNG";
//附件
String filename = "E:\\picture\\study\\401.PNG,E:\\picture\\study\\401.PNG";
//163邮箱用户名就是去掉@163.com
String username = "helloworld6379";
String password = "jexbhirasjwifqpx";
// Mail.send(smtp,from,to,subject,content,username,password);
Mail.sendAndCcWithFile(smtp,from,to,subject,content,imgFile,username,password,copyto,filename);
}
}
password是你开启IMAP/SMTP服务时发来的密码
效果：
