本文介绍了一个Java项目中用于发送带附件邮件的工具类实现，包括邮件身份验证、文本、HTML及附件邮件的发送方法。
做了个小项目需要发送mail, 而且是带有附件的mail, 整理来个工具类, 希望能帮助大家
首先定义mail 账号常量, 也可以不定义, 在代码中写入或者是从配置文件中读取, 怎么高兴怎么来
public class MailConstants {
public static final String MAIL_SERVER_HOST = "smtp.163.com";
public static final String MAIL_SERVER_PORT = "25";
public static final String MAIL_USERNAME = "username";
public static final String MAIL_PASSWORD = "password";
public static final Boolean MAIL_IS_VALIDATE = true;
public static final String MAIL_FROM_ADDRESS = "mail";
public static final String MAIL_TO_ADDRESS = "mail";
}然后是一个实体类
public class MailSenderInfo {
// 发送邮件的服务器的IP和端口
private String mailServerHost;
private String mailServerPort = "25";
// 邮件发送者的地址
private String fromAddress;
// 邮件接收者的地址
private String toAddress;
// 登陆邮件发送服务器的用户名和密码
private String userName;
private String password;
// 是否需要身份验证
private boolean validate = false;
// 邮件主题
private String subject;
// 邮件的文本内容
private String content;
// 邮件附件的文件名
private String[] attachFileNames;
// 邮件发送表的别名
private String otherName;
// 邮件附件的文件名以及文件
private Map<String, File> attachFile;
/**
* 获得邮件会话属性
*/
public Properties getProperties(){
Properties p = new Properties();
p.put("mail.smtp.host", this.mailServerHost);
p.put("mail.smtp.port", this.mailServerPort);
p.put("mail.smtp.auth", validate ? "true" : "false");
return p;
}
public String getMailServerHost() {
return mailServerHost;
}
public void setMailServerHost(String mailServerHost) {
this.mailServerHost = mailServerHost;
}
public String getMailServerPort() {
return mailServerPort;
}
public void setMailServerPort(String mailServerPort) {
this.mailServerPort = mailServerPort;
}
public String getFromAddress() {
return fromAddress;
}
public void setFromAddress(String fromAddress) {
this.fromAddress = fromAddress;
}
public String getToAddress() {
return toAddress;
}
public void setToAddress(String toAddress) {
this.toAddress = toAddress;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public boolean isValidate() {
return validate;
}
public void setValidate(boolean validate) {
this.validate = validate;
}
public String getSubject() {
return subject;
}
public void setSubject(String subject) {
this.subject = subject;
}
public String getContent() {
return content;
}
public void setContent(String content) {
this.content = content;
}
public String[] getAttachFileNames() {
return attachFileNames;
}
public void setAttachFileNames(String[] attachFileNames) {
this.attachFileNames = attachFileNames;
}
public String getOtherName() {
return otherName;
}
public void setOtherName(String otherName) {
this.otherName = otherName;
}
public Map<String, File> getAttachFile() {
return attachFile;
}
public void setAttachFile(Map<String, File> attachFile) {
this.attachFile = attachFile;
}
}
mail身份验证类
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);
}
}
public class SimpleMailSenderUtils {
/**
* 去发送附件邮件
* @param subject
* @param content
* @param fileMap
* @return
*/
public static Boolean toSendMail(String subject, String content, Map<String, File> fileMap){
MailSenderInfo mailInfo = new MailSenderInfo();
mailInfo.setMailServerHost(MailConstants.MAIL_SERVER_HOST);
mailInfo.setMailServerPort(MailConstants.MAIL_SERVER_PORT);
mailInfo.setValidate(MailConstants.MAIL_IS_VALIDATE);
mailInfo.setUserName(MailConstants.MAIL_USERNAME);
//您的邮箱密码
mailInfo.setPassword(MailConstants.MAIL_PASSWORD);
mailInfo.setFromAddress(MailConstants.MAIL_FROM_ADDRESS);
mailInfo.setToAddress(MailConstants.MAIL_TO_ADDRESS);
mailInfo.setSubject(subject);
mailInfo.setContent(content);
mailInfo.setAttachFile(fileMap);
//发送文体格式
boolean result = SimpleMailSenderUtils.sendAttachMail(mailInfo);
return result;
}
/**
* 以文本格式发送邮件
* @param mailInfo 待发送的邮件的信息
*/
public static boolean sendTextMail(MailSenderInfo mailInfo) {
// 判断是否需要身份认证
MyAuthenticator authenticator = null;
Properties prop = mailInfo.getProperties();
if (mailInfo.isValidate()) {
// 如果需要身份认证，则创建一个密码验证器
authenticator = new MyAuthenticator(mailInfo.getUserName(), mailInfo.getPassword());
}
// 根据邮件会话属性和密码验证器构造一个发送邮件的session
Session sendMailSession = Session.getDefaultInstance(prop,authenticator);
try {
// 根据session创建一个邮件消息
Message mailMessage = new MimeMessage(sendMailSession);
// 创建邮件发送者地址
// Address from = new InternetAddress(mailInfo.getFromAddress());
String otherName = mailInfo.getOtherName();
Address from = new InternetAddress(mailInfo.getFromAddress(), mailInfo.getOtherName());
// 设置邮件消息的发送者
mailMessage.setFrom(from);
// 创建邮件的接收者地址，并设置到邮件消息中
Address to = new InternetAddress(mailInfo.getToAddress());
mailMessage.setRecipient(Message.RecipientType.TO,to);
// 设置邮件消息的主题
mailMessage.setSubject(mailInfo.getSubject());
// 设置邮件消息发送的时间
mailMessage.setSentDate(new Date());
// 设置邮件消息的主要内容
String mailContent = mailInfo.getContent();
mailMessage.setText(mailContent);
// 发送邮件
Transport.send(mailMessage);
return true;
} catch (Exception ex) {
ex.printStackTrace();
}
return false;
}
/**
* 发送附件mail
* @param mailInfo
* @return
*/
public static boolean sendAttachMail(MailSenderInfo mailInfo){
// 判断是否需要身份认证
MyAuthenticator authenticator = null;
Properties prop = mailInfo.getProperties();
if (mailInfo.isValidate()) {
// 如果需要身份认证，则创建一个密码验证器
authenticator = new MyAuthenticator(mailInfo.getUserName(), mailInfo.getPassword());
}
// 根据邮件会话属性和密码验证器构造一个发送邮件的session
Session sendMailSession = Session.getDefaultInstance(prop,authenticator);
try {
// 根据session创建一个邮件消息
Message mailMessage = new MimeMessage(sendMailSession);
// 创建邮件发送者地址
// Address from = new InternetAddress(mailInfo.getFromAddress());
String otherName = mailInfo.getOtherName();
Address from = new InternetAddress(mailInfo.getFromAddress(), mailInfo.getOtherName());
// 设置邮件消息的发送者
mailMessage.setFrom(from);
// 创建邮件的接收者地址，并设置到邮件消息中
Address to = new InternetAddress(mailInfo.getToAddress());
mailMessage.setRecipient(Message.RecipientType.TO,to);
// 设置邮件消息的主题
mailMessage.setSubject(mailInfo.getSubject());
// 设置邮件消息发送的时间
mailMessage.setSentDate(new Date());
// 设置邮件消息的主要内容
MimeBodyPart text = new MimeBodyPart();
text.setContent(mailInfo.getContent(), "text/html;charset=UTF-8");
// 创建容器描述数据关系
MimeMultipart mp = new MimeMultipart();
mp.addBodyPart(text);
// 遍历添加附件
Map<String, File> attachFiles = mailInfo.getAttachFile();
if(attachFiles != null && attachFiles.size() > 0){
attachFiles.forEach((name, file) -> {
MimeBodyPart attach = new MimeBodyPart();
DataHandler dh = new DataHandler(new FileDataSource(file));
try {
attach.setDataHandler(dh);
//解决附件中文名称乱码
String attachName = MimeUtility.encodeText(name);
attach.setFileName(attachName);
mp.addBodyPart(attach);
} catch (MessagingException e) {
e.printStackTrace();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
});
}
mp.setSubType("mixed");
// 将multipart对象放到message中
mailMessage.setContent(mp);
//保存邮件
mailMessage.saveChanges();
// 发送邮件
Transport.send(mailMessage);
return true;
} catch (Exception ex) {
ex.printStackTrace();
}
return false;
}
/**
* 以HTML格式发送邮件
* @param mailInfo 待发送的邮件信息
*/
public static boolean sendHtmlMail(MailSenderInfo mailInfo){
// 判断是否需要身份认证
MyAuthenticator authenticator = null;
Properties pro = mailInfo.getProperties();
//如果需要身份认证，则创建一个密码验证器
if (mailInfo.isValidate()) {
authenticator = new MyAuthenticator(mailInfo.getUserName(), mailInfo.getPassword());
}
// 根据邮件会话属性和密码验证器构造一个发送邮件的session
Session sendMailSession = Session.getDefaultInstance(pro,authenticator);
try {
// 根据session创建一个邮件消息
Message mailMessage = new MimeMessage(sendMailSession);
// 创建邮件发送者地址
Address from = new InternetAddress(mailInfo.getFromAddress());
// 设置邮件消息的发送者
mailMessage.setFrom(from);
// 创建邮件的接收者地址，并设置到邮件消息中
Address to = new InternetAddress(mailInfo.getToAddress());
// Message.RecipientType.TO属性表示接收者的类型为TO
mailMessage.setRecipient(Message.RecipientType.TO,to);
// 设置邮件消息的主题
mailMessage.setSubject(mailInfo.getSubject());
// 设置邮件消息发送的时间
mailMessage.setSentDate(new Date());
// MiniMultipart类是一个容器类，包含MimeBodyPart类型的对象
Multipart mainPart = new MimeMultipart();
// 创建一个包含HTML内容的MimeBodyPart
BodyPart html = new MimeBodyPart();
// 设置HTML内容
html.setContent(mailInfo.getContent(), "text/html; charset=utf-8");
mainPart.addBodyPart(html);
// 将MiniMultipart对象设置为邮件内容
mailMessage.setContent(mainPart);
// 发送邮件
Transport.send(mailMessage);
return true;
} catch (MessagingException ex) {
ex.printStackTrace();
}
return false;
}
public static void main(String[] args){
String subject = "主题";
String content = "内容";
Map<String, File> fileMap = new HashMap<>();
fileMap.put("附件名", new File("d://abc.txt"));
SimpleMailSenderUtils.toSendMail(subject, content, fileMap);
}
}
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