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package com.hoover.mail.mail; import javax.mail.*; import javax.mail.internet.InternetAddress; import javax.mail.internet.MimeMessage; import javax.mail.internet.MimeUtility; import java.io.*; import java.text.SimpleDateFormat; import java.util.Date; /** * <p>ShowMail 此类用于：日报添加控制器</p> * <p>@author：hujm</p> * <p>@date：2021年04月07日 8:45</p> * <p>@remark：</p> */ public class ShowMail { private MimeMessage mimeMessage = null; /** * 附件下载后的存放目录 */ private String saveAttachPath = ""; /** * 存放邮件内容的StringBuffer对象 */ private final StringBuffer bodyText = new StringBuffer(); /** * 默认的日前显示格式 */ private String dateFormat = "yy-MM-dd HH:mm"; /** * 构造函数,初始化一个MimeMessage对象 */ public ShowMail() { } public ShowMail(MimeMessage mimeMessage) { this.mimeMessage = mimeMessage; System.out.println("创建一个ReceiveEmail对象...."); } public void setMimeMessage(MimeMessage mimeMessage) { this.mimeMessage = mimeMessage; System.out.println("设置一个MimeMessage对象..."); } /** * 获得发件人的地址和姓名 * * @throws Exception */ public String getFrom() throws Exception { InternetAddress[] address = (InternetAddress[]) mimeMessage.getFrom(); String from = address[0].getAddress(); if (from == null) { from = ""; System.out.println("无法知道发送者."); } String personal = address[0].getPersonal(); if (personal == null) { personal = ""; System.out.println("无法知道发送者的姓名."); } String fromAddr = null; if (personal != null || from != null) { fromAddr = personal + "<" + from + ">"; System.out.println("发送者是：" + fromAddr); } else { System.out.println("无法获得发送者信息."); } return fromAddr; } /** * 获得邮件的收件人，抄送，和密送的地址和姓名，根据所传递的参数的不同 * "to"----收件人　"cc"---抄送人地址　"bcc"---密送人地址 * * @param type * @return * @throws Exception */ public String getMailAddress(String type) throws Exception { String mailAddr = ""; String addType = type.toUpperCase(); InternetAddress[] address = null; if (addType.equals("TO") || addType.equals("CC") || addType.equals("BCC")) { if (addType.equals("TO")) { address = (InternetAddress[]) mimeMessage.getRecipients(Message.RecipientType.TO); } else if (addType.equals("CC")) { address = (InternetAddress[]) mimeMessage.getRecipients(Message.RecipientType.CC); } else { address = (InternetAddress[]) mimeMessage.getRecipients(Message.RecipientType.BCC); } if (address != null) { for (int i = 0; i < address.length; i++) { String emailAddr = address[i].getAddress(); if (emailAddr == null) { emailAddr = ""; } else { System.out.println("转换之前的emailAddr:" + emailAddr); emailAddr = MimeUtility.decodeText(emailAddr); System.out.println("转换之后的emailAddr:" + emailAddr); } String personal = address[i].getPersonal(); if (personal == null) { personal = ""; } else { System.out.println("转换之前的personal:" + personal); personal = MimeUtility.decodeText(personal); System.out.println("转换之后的personal:" + personal); } String compositeto = personal + "<" + emailAddr + ">"; System.out.println("完整的邮件地址：" + compositeto); mailAddr += "," + compositeto; } mailAddr = mailAddr.substring(1); } } else { throw new Exception("错误的电子邮件类型!"); } return mailAddr; } /** * 获得邮件主题 * * @return * @throws MessagingException */ public String getSubject() throws MessagingException { String subject = ""; try { System.out.println("转换前的subject：" + mimeMessage.getSubject()); subject = MimeUtility.decodeText(mimeMessage.getSubject()); System.out.println("转换后的subject:" + mimeMessage.getSubject()); if (subject == null) { subject = ""; } } catch (Exception exce) { exce.printStackTrace(); } return subject; } /** * 获得邮件发送日期 * * @return * @throws Exception */ public String getSentDate() throws Exception { Date sentDate = mimeMessage.getSentDate(); System.out.println("发送日期原始类型:" + dateFormat); SimpleDateFormat format = new SimpleDateFormat(dateFormat); String strSentDate = format.format(sentDate); System.out.println("发送日期可读类型:" + strSentDate); return strSentDate; } /** * 获得邮件正文内容 * * @return */ public String getBodyText() { return bodyText.toString(); } /** * 解析邮件，把得到的邮件内容保存到一个StringBuffer对象中，解析邮件 * 主要是根据MimeType类型的不同执行不同的操作，一步一步的解析 * * @param part * @throws Exception */ public void getMailContent(Part part) throws Exception { String contentType = part.getContentType(); //获得邮件的MimeType类型 System.out.println("邮件的MimeType类型:" + contentType); int nameIndex = contentType.indexOf("name"); boolean conName = false; if (nameIndex != -1) { conName = true; } System.out.println("邮件内容的类型:　" + contentType); if (part.isMimeType("text/plain") && conName == false) { //text/plain类型 bodyText.append((String) part.getContent()); } else if (part.isMimeType("text/html") && conName == false) { //text/html类型 bodyText.append((String) part.getContent()); } else if (part.isMimeType("multipart/*")) { //multipart/* Multipart multipart = (Multipart) part.getContent(); int counts = multipart.getCount(); for (int i = 0; i < counts; i++) { getMailContent(multipart.getBodyPart(i)); } } else if (part.isMimeType("message/rfc822")) { //message/rfc822 getMailContent((Part) part.getContent()); } else { System.out.println(""); } } /** * 判断此邮件是否需要回执，如果需要回执返回"true",否则返回"false" * * @return * @throws MessagingException */ public boolean getReplySign() throws MessagingException { boolean replySign = false; String[] needReply = mimeMessage.getHeader("Disposition-Notification-To"); if (needReply != null) { replySign = true; } if (replySign) {