java解析郵箱中的郵件資訊

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import lombok.extern.slf4j.Slf4j;import org.springframework.beans.factory.annotation.Value;import javax.mail.*;import javax.mail.internet.InternetAddress;import javax.mail.internet.MimeMessage;import javax.mail.internet.MimeMultipart;import javax.mail.internet.MimeUtility;import java.io.*;import java.text.SimpleDateFormat;import java.util.Date;import java.util.Properties;/** * 使用POP3協議解析郵件協助類 * * @author bzs on 2018/6/28. */@Slf4jpublic class ParsingEmailUtil {    public static void main(String[] args) throws Exception{        resceive("**********@163.com", "*****");    }    /**     * 擷取郵箱資訊     *     * @param emailAdress 需要解析的郵箱地址     * @param password    郵箱的授權密碼     * @throws Exception     */    public static void resceive(String emailAdress, String password) throws Exception {        String port = "110";   // 連接埠號碼        String servicePath = "pop.163.com";   // 伺服器位址        // 準備串連伺服器的會話資訊        Properties props = new Properties();        props.setProperty("mail.store.protocol", "pop3");       // 使用pop3協議        props.setProperty("mail.pop3.port", port);           // 連接埠        props.setProperty("mail.pop3.host", servicePath);       // pop3伺服器        // 建立Session執行個體對象        Session session = Session.getInstance(props);        Store store = session.getStore("pop3");        store.connect(emailAdress, password); //163郵箱程式登入屬於第三方登入所以這裡的密碼是163給的授權密碼而並非普通的登入密碼        // 獲得收件匣        Folder folder = store.getFolder("INBOX");        /* Folder.READ_ONLY：唯讀許可權         * Folder.READ_WRITE：可讀可寫（可以修改郵件的狀態）         */        folder.open(Folder.READ_WRITE); //開啟收件匣//        // 由於POP3協議無法獲知郵件的狀態,所以getUnreadMessageCount得到的是收件匣的郵件總數//        System.out.println("未讀郵件數: " + folder.getUnreadMessageCount());////        // 由於POP3協議無法獲知郵件的狀態,所以下面得到的結果始終都是為0//        System.out.println("刪除郵件數: " + folder.getDeletedMessageCount());//        System.out.println("新郵件: " + folder.getNewMessageCount());        // 獲得收件匣中的郵件總數        log.warn("郵件總數: {}", folder.getMessageCount());        // 得到收件匣中的所有郵件,並解析        Message[] messages = folder.getMessages();        //解析郵件        parseMessage(messages);        //得到收件匣中的所有郵件並且刪除郵件//        deleteMessage(messages);        //釋放資源        folder.close(true);        store.close();    }    /**     * 解析郵件     *     * @param messages 要解析的郵件清單     */    public static void parseMessage(Message... messages) throws MessagingException, IOException {        if (messages == null || messages.length < 1)            throw new MessagingException("未找到要解析的郵件!");        // 解析所有郵件        for (int i = 0, count = messages.length; i < count; i++) {            MimeMessage msg = (MimeMessage) messages[i];            log.info("------------------解析第" + msg.getMessageNumber() + "封郵件-------------------- ");            log.warn("主題: {}" , getSubject(msg));            log.warn("寄件者: {}" , getFrom(msg));            log.warn("收件者：{}" , getReceiveAddress(msg, null));            log.warn("發送時間：{}" , getSentDate(msg, null));            log.warn("是否已讀：{}" , isSeen(msg));            log.warn("郵件優先順序：{}" , getPriority(msg));            log.warn("是否需要回執：{}" , isReplySign(msg));            log.warn("郵件大小：{}" , msg.getSize() * 1024 + "kb");            boolean isContainerAttachment = isContainAttachment(msg);            log.warn("是否包含附件：{}" ,isContainerAttachment);            if (isContainerAttachment) {                saveAttachment(msg, "d:\\log\\" + msg.getSubject() + "_" + i + "_"); //儲存附件            }            StringBuffer content = new StringBuffer(30);            //解析郵件內文            getMailTextContent(msg, content);            log.warn("郵件內文：{}" , content);            log.info("------------------第" + msg.getMessageNumber() + "封郵件解析結束-------------------- ");            System.out.println();        }    }    /**     * 刪除郵件     *     * @param messages 要刪除郵件清單     */    public static void deleteMessage(Message... messages) throws MessagingException, IOException {        if (messages == null || messages.length < 1)            throw new MessagingException("未找到要解析的郵件!");        // 解析所有郵件        for (int i = 0, count = messages.length; i < count; i++) {            /**             *   郵件刪除             */            Message message = messages[i];            String subject = message.getSubject();            // set the DELETE flag to true            message.setFlag(Flags.Flag.DELETED, true);            System.out.println("Marked DELETE for message: " + subject);        }    }    /**     * 獲得郵件主題     *     * @param msg 郵件內容     * @return 解碼後的郵件主題     */    public static String getSubject(MimeMessage msg) throws UnsupportedEncodingException, MessagingException {        return MimeUtility.decodeText(msg.getSubject());    }    /**     * 獲得郵件寄件者     *     * @param msg 郵件內容     * @return 姓名 <Email地址>     * @throws MessagingException     * @throws UnsupportedEncodingException     */    public static String getFrom(MimeMessage msg) throws MessagingException, UnsupportedEncodingException {        String from = "";        Address[] froms = msg.getFrom();        if (froms.length < 1)            throw new MessagingException("沒有寄件者!");        InternetAddress address = (InternetAddress) froms[0];        String person = address.getPersonal();        if (person != null) {            person = MimeUtility.decodeText(person) + " ";        } else {            person = "";        }        from = person + "<" + address.getAddress() + ">";        return from;    }    /**     * 根據收件者類型，擷取郵件收件者、抄送和密送地址。如果收件者類型為空白，則獲得所有的收件者     * <p>Message.RecipientType.TO  收件者</p>     * <p>Message.RecipientType.CC  抄送</p>     * <p>Message.RecipientType.BCC 密送</p>     *     * @param msg  郵件內容     * @param type 收件者類型     * @return 收件者1 <郵件地址1>, 收件者2 <郵件地址2>, ...     * @throws MessagingException     */    public static String getReceiveAddress(MimeMessage msg, Message.RecipientType type) throws MessagingException {        StringBuffer receiveAddress = new StringBuffer();        Address[] addresss = null;        if (type == null) {            addresss = msg.getAllRecipients();        } else {            addresss = msg.getRecipients(type);        }        if (addresss == null || addresss.length < 1)            throw new MessagingException("沒有收件者!");        for (Address address : addresss) {            InternetAddress internetAddress = (InternetAddress) address;            receiveAddress.append(internetAddress.toUnicodeString()).append(",");        }        receiveAddress.deleteCharAt(receiveAddress.length() - 1); //刪除最後一個逗號        return receiveAddress.toString();    }    /**     * 獲得郵件發送時間     *     * @param msg 郵件內容     * @return yyyy年mm月dd日 星期X HH:mm     * @throws MessagingException     */    public static String getSentDate(MimeMessage msg, String pattern) throws MessagingException {        Date receivedDate = msg.getSentDate();        if (receivedDate == null)            return "";        if (pattern == null || "".equals(pattern))            pattern = "yyyy年MM月dd日 E HH:mm ";        return new SimpleDateFormat(pattern).format(receivedDate);    }    /**     * 判斷郵件中是否包含附件     *     * @param part 郵件內容     * @return 郵件中存在附件返回true，不存在返回false     * @throws MessagingException     * @throws IOException     */    public static boolean isContainAttachment(Part part) throws MessagingException, IOException {        boolean flag = false;        if (part.isMimeType("multipart/*")) {            MimeMultipart multipart = (MimeMultipart) part.getContent();            int partCount = multipart.getCount();            for (int i = 0; i < partCount; i++) {                BodyPart bodyPart = multipart.getBodyPart(i);                String disp = bodyPart.getDisposition();                if (disp != null && (disp.equalsIgnoreCase(Part.ATTACHMENT) || disp.equalsIgnoreCase(Part.INLINE))) {                    flag = true;                } else if (bodyPart.isMimeType("multipart/*")) {                    flag = isContainAttachment(bodyPart);                } else {                    String contentType = bodyPart.getContentType();                    if (contentType.indexOf("application") != -1) {                        flag = true;                    }                    if (contentType.indexOf("name") != -1) {                        flag = true;                    }                }                if (flag) break;            }        } else if (part.isMimeType("message/rfc822")) {            flag = isContainAttachment((Part) part.getContent());        }        return flag;    }    /**     * 判斷郵件是否已讀     *     * @param msg 郵件內容     * @return 如果郵件已讀返回true, 否則返回false     * @throws MessagingException     */    public static boolean isSeen(MimeMessage msg) throws MessagingException {        return msg.getFlags().contains(Flags.Flag.SEEN);    }    /**     * 判斷郵件是否需要閱讀回執     *     * @param msg 郵件內容     * @return 需要回執返回true, 否則返回false     * @throws MessagingException     */    public static boolean isReplySign(MimeMessage msg) throws MessagingException {        boolean replySign = false;        String[] headers = msg.getHeader("Disposition-Notification-To");        if (headers != null)            replySign = true;        return replySign;    }    /**     * 獲得郵件的優先順序     *     * @param msg 郵件內容     * @return 1(High):緊急  3:普通(Normal)  5:低(Low)     * @throws MessagingException     */    public static String getPriority(MimeMessage msg) throws MessagingException {        String priority = "普通";        String[] headers = msg.getHeader("X-Priority");        if (headers != null) {            String headerPriority = headers[0];            if (headerPriority.indexOf("1") != -1 || headerPriority.indexOf("High") != -1)                priority = "緊急";            else if (headerPriority.indexOf("5") != -1 || headerPriority.indexOf("Low") != -1)                priority = "低";            else                priority = "普通";        }        return priority;    }    /**     * 獲得郵件常值內容     *     * @param part    郵件體     * @param content 儲存郵件常值內容的字串     * @throws MessagingException     * @throws IOException     */    public static void getMailTextContent(Part part, StringBuffer content) throws MessagingException, IOException {        //如果是文本類型的附件，通過getContent方法可以取到常值內容，但這不是我們需要的結果，所以在這裡要做判斷        boolean isContainTextAttach = part.getContentType().indexOf("name") > 0;        if (part.isMimeType("text/*") && !isContainTextAttach) {            content.append(part.getContent().toString());        } else if (part.isMimeType("message/rfc822")) {            getMailTextContent((Part) part.getContent(), content);        } else if (part.isMimeType("multipart/*")) {            Multipart multipart = (Multipart) part.getContent();            int partCount = multipart.getCount();            for (int i = 0; i < partCount; i++) {                BodyPart bodyPart = multipart.getBodyPart(i);                getMailTextContent(bodyPart, content);            }        }    }    /**     * 儲存附件     *     * @param part    郵件中多個組合體中的其中一個組合體     * @param destDir 附件儲存目錄     * @throws UnsupportedEncodingException     * @throws MessagingException     * @throws FileNotFoundException     * @throws IOException     */    public static void saveAttachment(Part part, String destDir) throws MessagingException, IOException {        if (part.isMimeType("multipart/*")) {            Multipart multipart = (Multipart) part.getContent();    //複雜體郵件            //複雜體郵件包含多個郵件體            int partCount = multipart.getCount();            for (int i = 0; i < partCount; i++) {                //獲得複雜體郵件中其中一個郵件體                BodyPart bodyPart = multipart.getBodyPart(i);                //某一個郵件體也有可能是由多個郵件體組成的複雜體                String disp = bodyPart.getDisposition();                if (disp != null && (disp.equalsIgnoreCase(Part.ATTACHMENT) || disp.equalsIgnoreCase(Part.INLINE))) {                    InputStream is = bodyPart.getInputStream();                    saveFile(is, destDir, decodeText(bodyPart.getFileName()));                } else if (bodyPart.isMimeType("multipart/*")) {                    saveAttachment(bodyPart, destDir);                } else {                    String contentType = bodyPart.getContentType();                    if (contentType.indexOf("name") != -1 || contentType.indexOf("application") != -1) {                        saveFile(bodyPart.getInputStream(), destDir, decodeText(bodyPart.getFileName()));                    }                }            }        } else if (part.isMimeType("message/rfc822")) {            saveAttachment((Part) part.getContent(), destDir);        }    }    /**     * 讀取輸入資料流中的資料儲存至指定目錄     *     * @param is       輸入資料流     * @param fileName 檔案名稱     * @param destDir  檔案儲存體目錄     * @throws FileNotFoundException     * @throws IOException     */    private static void saveFile(InputStream is, String destDir, String fileName) throws FileNotFoundException, IOException {        BufferedInputStream bis = new BufferedInputStream(is);        BufferedOutputStream bos = new BufferedOutputStream(                new FileOutputStream(new File(destDir + fileName)));        int len = -1;        while ((len = bis.read()) != -1) {            bos.write(len);            bos.flush();        }        bos.close();        bis.close();    }    /**     * 文本解碼     *     * @param encodeText 解碼MimeUtility.encodeText(String text)方法編碼後的文本     * @return 解碼後的文本     * @throws UnsupportedEncodingException     */    public static String decodeText(String encodeText) throws UnsupportedEncodingException {        if (encodeText == null || "".equals(encodeText)) {            return "";        } else {            return MimeUtility.decodeText(encodeText);        }    }}

　　通過此方法可以解析出郵箱中郵件的詳細資料。

java解析郵箱中的郵件資訊