package com.thinkgem.jeesite.common.utils; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.util.Date; import java.util.Enumeration; import java.util.Properties; import java.util.Vector; import javax.activation.*; import javax.mail.Authenticator; import javax.mail.Message; import javax.mail.Multipart; import javax.mail.PasswordAuthentication; 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; /** * <p> * Title: 使用javamail发送邮件 * </p> */ public class MailUtils { private static Logger logger = LoggerFactory.getLogger(MailUtils.class); String to = "";// 收件人 String toCC = "";//抄送 String toBcc = "";//密送 String from = "";// 发件人 String host = "";// smtp主机 String port = ""; String username = ""; String password = ""; String filename = "";// 附件文件名 String subject = "";// 邮件主题 String content = "";// 邮件正文 String imagepath = "";// 图片路径 Vector file = new Vector();// 附件文件集合 public String getImagepath() { return imagepath; } public void setImagepath(String imagepath) { this.imagepath = imagepath; } /** * <br> * 方法说明：默认构造器 <br> * 输入参数： <br> * 返回类型： */ public MailUtils() { } /** * <br> * 方法说明：构造器，提供直接的参数传入 <br> * 输入参数： <br> * 返回类型： */ public MailUtils(String to, String from, String smtpServer, String username, String password, String subject, String content) { this.to = to; this.from = from; this.host = smtpServer; this.username = username; this.password = password; this.subject = subject; this.content = content; } public void setPort(String port){ this.port = port; } /** * <br> * 方法说明：设置邮件服务器地址 <br> * 输入参数：String host 邮件服务器地址名称 <br> * 返回类型： */ public void setHost(String host) { this.host = host; } /** * <br> * 方法说明：设置登录服务器校验密码 <br> * 输入参数： <br> * 返回类型： */ public void setPassWord(String pwd) { this.password = pwd; } /** * <br> * 方法说明：设置登录服务器校验用户 <br> * 输入参数： <br> * 返回类型： */ public void setUserName(String usn) { this.username = usn; } /** * <br> * 方法说明：设置邮件发送目的邮箱 <br> * 输入参数： <br> * 返回类型： */ public void setTo(String to) { this.to = to; } /** * 设置抄送者 * * */ public void setToCC(String to){ this.toCC = to; } public void setToBcc(String to){ this.toBcc = to; } /** * <br> * 方法说明：设置邮件发送源邮箱 <br> * 输入参数： <br> * 返回类型： */ public void setFrom(String from) { this.from = from; } /** * <br> * 方法说明：设置邮件主题 <br> * 输入参数： <br> * 返回类型： */ public void setSubject(String subject) { this.subject = subject; } /** * <br> * 方法说明：设置邮件内容 <br> * 输入参数： <br> * 返回类型： */ public void setContent(String content) { this.content = content; } /** * <br> * 方法说明：把主题转换为中文 <br> * 输入参数：String strText <br> * 返回类型： */ public String transferChinese(String strText) { try { strText = MimeUtility.encodeText(new String(strText.getBytes("UTF-8"), "UTF-8"), "UTF-8", "B"); } catch (Exception e) { e.printStackTrace(); } return strText; } /** * <br> * 方法说明：往附件组合中添加附件 <br> * 输入参数： <br> * 返回类型： */ public void attachfile(String fname) { file.addElement(fname); } /** * <br> * 方法说明：发送邮件 <br> * 输入参数： <br> * 返回类型：boolean 成功为true，反之为false */ public boolean sendMail() { logger.info("------开始发邮件------"); // 构造mail session Properties props = new Properties() ; props.put("mail.smtp.host", host); props.put("mail.smtp.auth", "true"); if(port != "") props.put("mail.smtp.port", port); Session session = Session.getDefaultInstance(props, new Authenticator() { public PasswordAuthentication getPasswordAuthentication() { return new PasswordAuthentication(username, password); } }); //Session session = Session.getDefaultInstance(props); // Session session = Session.getDefaultInstance(props, null); try { // 构造MimeMessage 并设定基本的值 MimeMessage msg = new MimeMessage(session); //MimeMessage msg = new MimeMessage(); msg.setFrom(new InternetAddress(from)); //msg.addRecipients(Message.RecipientType.TO, address); //这个只能是给一个人发送email //设置接收者 if(!Empty2String(to)) msg.setRecipients(Message.RecipientType.TO, InternetAddress.parse(to)) ; //设置抄送者 if(!Empty2String(toCC)) msg.setRecipients(Message.RecipientType.CC, InternetAddress.parse(toCC)) ; //设置密送者 if(!Empty2String(toBcc)) msg.setRecipients(Message.RecipientType.BCC, InternetAddress.parse(toBcc)) ; subject = transferChinese(subject); msg.setSubject(subject); // 构造Multipart Multipart mp = new MimeMultipart(); // 向Multipart添加正文 MimeBodyPart mbpContent = new MimeBodyPart(); mbpContent.setContent(content, "text/html;charset=gb2312"); // 向MimeMessage添加（Multipart代表正文） mp.addBodyPart(mbpContent); // 向Multipart添加附件 Enumeration efile = file.elements(); while (efile.hasMoreElements()) { MimeBodyPart mbpFile = new MimeBodyPart(); filename = efile.nextElement().toString(); FileDataSource fds = new FileDataSource(filename); mbpFile.setDataHandler(new DataHandler(fds)); //<SPAN style="COLOR: #ff0000">//这个方法可以解决附件乱码问题。</SPAN> String filename= new String(fds.getName().getBytes(),"ISO-8859-1"); mbpFile.setFileName(filename); // 向MimeMessage添加（Multipart代表附件） mp.addBodyPart(mbpFile); } file.removeAllElements(); // 向Multipart添加MimeMessage msg.setContent(mp); msg.setSentDate(new Date()); msg.saveChanges() ; // 发送邮件 Transport transport = session.getTransport("smtp"); transport.connect(host, username, password); transport.sendMessage(msg, msg.getAllRecipients()); transport.close(); } catch (Exception mex) { mex.printStackTrace(); logger.info("---发邮件报错信息----"+mex.getMessage()); // Exception ex = null; // if ((ex = mex.getNextException()) != null) { // ex.printStackTrace(); // } return false; } return true; } /*** * 发送带有图片的邮件 * @return */ public boolean sendPicMail() { logger.info("------开始发邮件------"); // 构造mail session Properties props = new Properties() ; props.put("mail.smtp.host", host); props.put("mail.smtp.auth", "true"); if(port != "") props.put("mail.smtp.port", port); Session session = Session.getDefaultInstance(props, new Authenticator() { public PasswordAuthentication getPasswordAuthentication() { return new PasswordAuthentication(username, password); } }); //Session session = Session.getDefaultInstance(props); // Session session = Session.getDefaultInstance(props, null); try { // 构造MimeMessage 并设定基本的值 MimeMessage msg = new MimeMessage(session); //MimeMessage msg = new MimeMessage(); msg.setFrom(new InternetAddress(from)); //msg.addRecipients(Message.RecipientType.TO, address); //这个只能是给一个人发送email //设置接收者 if(!Empty2String(to)) msg.setRecipients(Message.RecipientType.TO, InternetAddress.parse(to)) ; //设置抄送者 if(!Empty2String(toCC)) msg.setRecipients(Message.RecipientType.CC, InternetAddress.parse(toCC)) ; //设置密送者 if(!Empty2String(toBcc)) msg.setRecipients(Message.RecipientType.BCC, InternetAddress.parse(toBcc)) ; subject = transferChinese(subject); msg.setSubject(subject); // 构造Multipart MimeMultipart mp = new MimeMultipart("related"); // 向Multipart添加正文 MimeBodyPart mbpContent = new MimeBodyPart(); mbpContent.setContent(content, "text/html;charset=gb2312"); // 向MimeMessage添加（Multipart代表正文） mp.addBodyPart(mbpContent); // second part (the image) MimeBodyPart imageBodyPart = new MimeBodyPart(); DataSource imageds = new FileDataSource(imagepath); imageBodyPart.setDataHandler(new DataHandler(imageds)); imageBodyPart.setHeader("Content-ID","<attach>"); imageBodyPart.setHeader("Content-Type", "image/png"); imageBodyPart.setDisposition(MimeBodyPart.INLINE); imageBodyPart.setFileName("attach.png"); // add it mp.addBodyPart(imageBodyPart); // 向Multipart添加附件 Enumeration efile = file.elements(); while (efile.hasMoreElements()) { MimeBodyPart mbpFile = new MimeBodyPart(); filename = efile.nextElement().toString(); FileDataSource fds = new FileDataSource(filename); mbpFile.setDataHandler(new DataHandler(fds)); //<SPAN style="COLOR: #ff0000">//这个方法可以解决附件乱码问题。</SPAN> String filename= new String(fds.getName().getBytes(),"ISO-8859-1"); mbpFile.setFileName(filename); // 向MimeMessage添加（Multipart代表附件） mp.addBodyPart(mbpFile); } file.removeAllElements(); // 向Multipart添加MimeMessage msg.setContent(mp); msg.setSentDate(new Date()); msg.saveChanges() ; // 发送邮件 Transport transport = session.getTransport("smtp"); transport.connect(host, username, password); transport.sendMessage(msg, msg.getAllRecipients()); transport.close(); } catch (Exception mex) { mex.printStackTrace(); logger.info("---发邮件报错信息----"+mex.getMessage()); // Exception ex = null; // if ((ex = mex.getNextException()) != null) { // ex.printStackTrace(); // } return false; } return true; } public static boolean Empty2String(String str){ return str == null || "".equals(str) || "null".equals(str) || "NULL".equals(str); } /** * <br> * 方法说明：主方法，用于测试 <br> * 输入参数： <br> * 返回类型： */ public static void main(String[] args) { MailUtils sendmail = new MailUtils(); sendmail.setHost("smtp.cmge.com"); sendmail.setUserName("system.omss@cmge.com"); sendmail.setFrom("system.omss@cmge.com"); sendmail.setPassWord("XXXXX"); sendmail.setTo("lu.shiqin@cmge.com,system.omss@cmge.com"); //sendmail.setToCC(""); sendmail.setSubject("你好22，这是测ddddd试！"); sendmail.setContent("<h1>你好这是一个带多附件多人发送的的测试！~~~~~~~~~~~~~~~~~~~~~~~~~</h1>"+"<img src=\"cid:attach\">");
sendmail.setImagepath(picpath);
sendmail.sendPicMail()
//sendmail.attachfile("F:\\mac共享\\受害用户名单20150119.csv"); //sendmail.attachfile("F:\\mac共享\\接听转接验证号码20150119.csv"); // logger.info(sendmail.sendMail()); } }
防止图裂：
要想正确显示邮件的图片内容，必须做到如下几点：
1. MimeMultipart的类型必须是“related”（new MimeMultipart(“related”)）；
2. 图片的显示方式必须为“INLINE”（Disposition=MimeBodyPart.INLINE）；
3. 必须明确指定“Content-Type”头信息（Content-Type=image/png）；
4. 图片名称与“Content-ID”绝不能为“image”（可能为关键字）；
参考帖子：