使用javaxmail发送邮件（带/不带附件，文本邮件/html邮件）

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1.  先定义发送邮件所需要的一些基本信息MailSenderInfo.java

package com.unj.mail_send2;import java.io.File;
import java.util.List;
import java.util.Properties;public class MailSenderInfo {// 发送邮件的服务器的地址和端口，其实端口号可以不用指定private String mailServerHost="smtp.qq.com";private String mailServerPort = "25";// 邮件发送者的地址private String fromAddress="123456789@qq.com";// 邮件接收者的地址private String toAddress="987654321@qq.com";// 登陆邮件发送服务器的用户名和密码private String userName="987654321@qq.com";private String password="wahaha";// 是否需要身份验证private boolean validate = true;// 邮件主题private String subject="subject";// 邮件的文本内容private String content="hehe";// 邮件附件的文件名private String[] attachFileNames;private List<File> fileList;/*** 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 void addFile(File file){fileList.add(file);}//然后是一些get/set方法
}

2. 然后编写验证模块

package com.unj.mail_send2;import javax.mail.Authenticator;
import javax.mail.PasswordAuthentication;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;}@Overrideprotected PasswordAuthentication getPasswordAuthentication() {return new PasswordAuthentication(userName, password);}
}

3.  最后是发送方法的编写，注意看加没加附件的差别

package com.unj.mail_send2;import java.io.File;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
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;public class SimpleMailSender {/*** 以文本格式发送邮件** @param mailInfo*            待发送的邮件的信息*/public boolean sendTextMail(MailSenderInfo mailInfo) {// 判断是否需要身份认证MyAuthenticator authenticator = null;Properties pro = 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sessionSession 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());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 (MessagingException ex) {ex.printStackTrace();}return false;}/*** 以HTML格式发送邮件** @param mailInfo*            待发送的邮件信息*/public 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sessionSession 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TOmailMessage.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 multPart = new MimeMultipart();// 创建一个包含HTML内容的MimeBodyPartBodyPart html = new MimeBodyPart();// 设置HTML内容html.setContent(mailInfo.getContent(), "text/html; charset=utf-8");multPart.addBodyPart(html);// ============添加附件操作=============/List<File> list = mailInfo.getFileList();if (list != null && list.size() > 0) {// 有附件for (File f : list) {MimeBodyPart mbp = new MimeBodyPart();FileDataSource fds = new FileDataSource(f.getAbsolutePath()); // 得到数据源mbp.setDataHandler(new DataHandler(fds));mbp.setFileName(f.getName());multPart.addBodyPart(mbp);}list.clear();}// ============添加附件操作=============/// 将MiniMultipart对象设置为邮件内容mailMessage.setContent(multPart);// 发送邮件Transport.send(mailMessage);return true;} catch (MessagingException ex) {ex.printStackTrace();}return false;}public static void main(String[] args) {SimpleMailSender mailSender = new SimpleMailSender();MailSenderInfo mailInfo = new MailSenderInfo();List<File> fileList = new ArrayList<File>();fileList.add(new File("E:/devTools/webService_cxf/apache-cxf-2.7.0/bin/idl2wsdl.bat"));fileList.add(new File("E:/devTools/webService_cxf/apache-cxf-2.7.0/bin/wsdl2java.bat"));fileList.add(new File("E:/devTools/webService_cxf/apache-cxf-2.7.0/bin/wsdl2js.bat"));fileList.add(new File("E:/devTools/webService_cxf/apache-cxf-2.7.0/bin/wsdl2soap.bat"));mailInfo.setFileList(fileList);if (mailSender.sendTextMail(mailInfo)) {System.out.println("ok!");}if (mailSender.sendHtmlMail(mailInfo)) {System.out.println("ok too!");}}}

其实，发送文本邮件和html格式的邮件区别就在于

mailMessage.setText(mailContent); 

mailMessage.setContent(a); 

 Multipart a = new MimeMultipart();

a.addBodyPart(b);

MimeBodyPart b = new MimeBodyPart();

b.setContent("xxx", "text/html; charset=utf-8");

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