Java Mail 邮件 定时收件

直接上代码:

解码收取的邮件

package com.springbootemaildemo.decode;

import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

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;

/**
 * @Description 解码收取的邮件
 */
public class DecodeMail {
    private Logger logger = LoggerFactory.getLogger(this.getClass());
    private MimeMessage mimeMessage = null;

    // 附件下载后的存放目录
    private String saveAttachPath = "E:\mail\";

    /**
     * 存放邮件内容的StringBuffer对象
     */
    private StringBuffer bodyText = new StringBuffer();

    private String dateFormat = "yy-MM-dd HH:mm:ss";

    public DecodeMail() {
    }

    public DecodeMail(MimeMessage mimeMessage) {
        this.mimeMessage = mimeMessage;
    }

    public void setMimeMessage(MimeMessage mimeMessage) {
        this.mimeMessage = mimeMessage;
    }

    /**
     * 设置附件存放路径
     *
     * @param attachPath
     */
    public void setAttachPath(String attachPath) {
        this.saveAttachPath = attachPath;
    }

    /**
     * 设置日期显示格式
     *
     * @param format
     * @throws Exception
     */
    public void setDateFormat(String format) throws Exception {
        this.dateFormat = format;
    }

    /**
     * 获得附件存放路径
     *
     * @return
     */
    public String getAttachPath() {
        return saveAttachPath;
    }

    /**
     * * 获得发件人的地址和姓名
     */
    public String getFrom() throws Exception {
        InternetAddress address[] = (InternetAddress[]) mimeMessage.getFrom();
        String from = address[0].getAddress();
        if (from == null) {
            from = "";
        }
        String personal = address[0].getPersonal();
        if (personal == null) {
            personal = "";
        }
        String fromAddr = null;
        if (personal != null || from != null) {
            fromAddr = personal + "<" + from + ">";
        }
        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
     */
    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 {
                        emailAddr = MimeUtility.decodeText(emailAddr);
                    }
                    String personal = address[i].getPersonal();
                    if (personal == null) {
                        personal = "";
                    } else {
                        personal = MimeUtility.decodeText(personal);
                    }
                    String compositeto = personal + "<" + emailAddr + ">";
                    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
     */
    public String getSubject() {
        String subject = "";
        try {
            if (StringUtils.isNotEmpty(mimeMessage.getSubject())) {
                subject = MimeUtility.decodeText(mimeMessage.getSubject());
            } else {
                subject = "";
            }
        } catch (Exception exce) {
            logger.error("获取邮件出错..");
            exce.printStackTrace();
        }
        return subject;
    }

    /**
     * 获得邮件发送日期
     *
     * @return
     * @throws Exception
     */
    public String getSentDate() throws Exception {
        Date sentDate = mimeMessage.getSentDate();
        SimpleDateFormat format = new SimpleDateFormat(dateFormat);
        String strSentDate = format.format(sentDate);
        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 {
        try {
            String contentType = part.getContentType();
            // 获得邮件的MimeType类型
            int nameIndex = contentType.indexOf("name");
            boolean conName = false;
            if (nameIndex != -1) {
                conName = true;
            }
            if (part.isMimeType("text/plain") && conName == false) {
                bodyText.append((String) part.getContent());
            } else if (part.isMimeType("text/html") && conName == false) {
                String content = (String) part.getContent();
                bodyText.append(content);
            } else if (part.isMimeType("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")) {
                getMailContent((Part) part.getContent());
            } else {
            }
        } catch (Exception e) {
            logger.error("获取邮件内容出错...：NO Content");
        }

    }

    /**
     * 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) {
        } else {
        }
        return replySign;
    }

    /**
     * 获得此邮件的Message-ID
     *
     * @return
     * @throws MessagingException
     */
    public String getMessageId() throws MessagingException {
        String messageID = mimeMessage.getMessageID();
        return messageID;
    }

    /**
     * 判断此邮件是否已读，如果未读返回false,反之返回true
     *
     * @return
     * @throws MessagingException
     */
    public boolean isNew() throws MessagingException {
        boolean isNew = false;
        Flags flags = ((Message) mimeMessage).getFlags();
        Flags.Flag[] flag = flags.getSystemFlags();
        for (int i = 0; i < flag.length; i++) {
            if (flag[i] == Flags.Flag.SEEN) {
                isNew = true;
                // break;
            }
        }
        return isNew;
    }

    /**
     * 判断此邮件是否包含附件
     *
     * @param part
     * @return
     * @throws Exception
     */
    public boolean isContainAttach(Part part) throws Exception {
        boolean attachFlag = false;
        // String contentType = part.getContentType();
        if (part.isMimeType("multipart/*")) {
            Multipart mp = (Multipart) part.getContent();
            for (int i = 0; i < mp.getCount(); i++) {
                BodyPart mPart = mp.getBodyPart(i);
                String disposition = mPart.getDisposition();
                if ((disposition != null) && ((disposition.equals(Part.ATTACHMENT)) || (disposition.equals(Part.INLINE))))
                    attachFlag = true;
                else if (mPart.isMimeType("multipart/*")) {
                    attachFlag = isContainAttach(mPart);
                } else {
                    String conType = mPart.getContentType();
                    if (conType.toLowerCase().indexOf("application") != -1)
                        attachFlag = true;
                    if (conType.toLowerCase().indexOf("name") != -1)
                        attachFlag = true;
                }
            }
        } else if (part.isMimeType("message/rfc822")) {
            attachFlag = isContainAttach((Part) part.getContent());
        }
        return attachFlag;
    }

    /**
     * 保存附件
     *
     * @param part
     * @throws Exception
     */
    public void saveAttachMent(Part part) throws Exception {
        String fileName;
        logger.info(part.isMimeType("multipart/*") + "");
        if (part.isMimeType("multipart/*")) {
            Multipart mp = (Multipart) part.getContent();
            for (int i = 0; i < mp.getCount(); i++) {
                BodyPart mPart = mp.getBodyPart(i);
                String disposition = mPart.getDisposition();
                if ((disposition != null) && ((disposition.equals(Part.ATTACHMENT)) || (disposition.equals(Part.INLINE)))) {
                    fileName = mPart.getFileName();
                    if (null != fileName) {
                        fileName = MimeUtility.decodeText(fileName);
                        saveFile(fileName, mPart.getInputStream());
                    }
                } else if (mPart.isMimeType("multipart/*")) {
                    saveAttachMent(mPart);
                } else {
                    fileName = mPart.getFileName();
                    if (null != fileName) {
                        fileName = MimeUtility.decodeText(fileName);
                        saveFile(fileName, mPart.getInputStream());
                    }
                }
            }
        } else if (part.isMimeType("message/rfc822")) {
            saveAttachMent((Part) part.getContent());
        }
    }

    /**
     * 获取附件信息
     *
     * @param part
     * @throws Exception
     */
    public String getAttachMent(Part part) throws Exception {
        String fileName = null;
        logger.info(part.isMimeType("multipart/*") + "");
        if (part.isMimeType("multipart/*")) {
            Multipart mp = (Multipart) part.getContent();
            for (int i = 0; i < mp.getCount(); i++) {
                BodyPart mPart = mp.getBodyPart(i);
                String disposition = mPart.getDisposition();
                if ((disposition != null) && ((disposition.equals(Part.ATTACHMENT)) || (disposition.equals(Part.INLINE)))) {
                    fileName = mPart.getFileName();
                    if (null != fileName) {
                        fileName = MimeUtility.decodeText(fileName);
                        saveFile(fileName, mPart.getInputStream());
                    }
                } else if (mPart.isMimeType("multipart/*")) {
                    saveAttachMent(mPart);
                } else {
                    fileName = mPart.getFileName();
                    if (null != fileName) {
                        fileName = MimeUtility.decodeText(fileName);
                        saveFile(fileName, mPart.getInputStream());
                    }
                }
            }
        } else if (part.isMimeType("message/rfc822")) {
            saveAttachMent((Part) part.getContent());
        }
        return fileName;
    }

    /**
     * 真正的保存附件到指定目录里
     *
     * @param fileName
     * @param in
     * @throws Exception
     */
    private void saveFile(String fileName, InputStream in) throws Exception {
        String osName = System.getProperty("os.name");
        String storeDir = getAttachPath();
        String separator = "";
        if (osName == null) {
            osName = "";
        }
        if (osName.toLowerCase().indexOf("win") != -1) {
            separator = "\";
            if (storeDir == null || storeDir.equals(""))
                storeDir = "E:\mail";
        } else {
            separator = "/";
            storeDir = "/mail";
        }
        File storeFile = new File(storeDir + separator + fileName);
        logger.info("附件的保存地址:　" + storeFile.toString());
        // for(int　i=0;storefile.exists();i++){
        // storefile　=　new　File(storedir+separator+fileName+i);
        // }
        BufferedOutputStream bos = null;
        BufferedInputStream bis = null;
        try {
            // 注：写入本地文件很慢，待解决
            bos = new BufferedOutputStream(new FileOutputStream(storeFile));
            bis = new BufferedInputStream(in);
            int c;
            while ((c = bis.read()) != -1) {
                bos.write(c);
                bos.flush();
            }
        } catch (Exception exception) {
            exception.printStackTrace();
            logger.error("保存附件失败...");
        } finally {
            bos.close();
            bis.close();
        }
    }
}

获取邮箱中邮件信息

package com.springbootemaildemo.decode;

import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;

import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.internet.MimeMessage;

/**
 * @Description 用于获取邮箱中邮件信息
 */
@Component
public class MailThread {
    private Logger logger = LoggerFactory.getLogger(this.getClass());

    DecodeMail re = null;

    public void run(Message message[]) {
        if (null != message) {
            for (int i = 0; i < message.length; i++) {
                try {
                    re = new DecodeMail((MimeMessage) message[i]);
                    logger.info("邮件　" + i + "　主题:　" + re.getSubject());
                    logger.info("邮件　" + i + "　是否需要回复:　" + re.getReplySign());
                    logger.info("邮件　" + i + "　是否已读:　" + re.isNew());
                    logger.info("邮件　" + i + "　是否包含附件:　" + re.isContainAttach(message[i]));
                    logger.info("邮件" + i + "附件信息:" + re.getAttachMent(message[i]));
                    logger.info("邮件　" + i + "　发送时间:　" + re.getSentDate());
                    logger.info("邮件　" + i + "　发送人地址:　" + re.getFrom());
                    logger.info("邮件　" + i + "　收信人地址:　" + re.getMailAddress("to"));
                    logger.info("邮件　" + i + "　抄送:　" + re.getMailAddress("cc"));
                    logger.info("邮件　" + i + "　暗抄:　" + re.getMailAddress("bcc"));
                    re.setDateFormat("yyyy年MM月dd日");
                    logger.info("邮件　" + i + "　发送时间:　" + re.getSentDate());
                    logger.info("邮件　" + i + "　邮件ID:　" + re.getMessageId());
                    re.getMailContent(message[i]);
                    String bodyText = re.getBodyText();
                    logger.info("邮件　" + i + "　正文内容:　
" + bodyText);
                    Document doc = Jsoup.parse(bodyText);

                    String text = doc.text();
                    logger.info("邮件　" + i + "　处理后正文内容:　
" + text);

                    logger.info("保存附件...");
                    re.saveAttachMent(message[i]);
                } catch (MessagingException e) {
                    logger.error("获取邮件内容出错...");
                    e.printStackTrace();
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }
    }
}

链接邮件服务器，过滤邮件，读取邮件

package com.springbootemaildemo.decode;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import javax.mail.*;
import javax.mail.search.FlagTerm;
import javax.mail.search.IntegerComparisonTerm;
import javax.mail.search.SearchTerm;
import javax.mail.search.SizeTerm;
import java.util.Properties;

/**
 * @Description 链接邮件服务器，过滤邮件，读取邮件
 */
@Component
public class MailMain {
    private static Logger logger = LoggerFactory.getLogger(MailMain.class);

    @Autowired
    MailThread mailThread;

    public void run() {
        try {
            String imapServer = "imap.qq.com";
            String protocol = "imap";
             //读取qq邮箱收到的邮件,这里是你自己的qq邮箱账号
            String username = "xxxxx@qq.com";

            //如果你用qq或163邮箱，这里授权码不是你登录的密码
            //如果你是企业邮箱，就看你们的公司了
            String password = "ipeiquufachheefg";

            Properties p = new Properties();
            p.setProperty("mail.transport.protocol", protocol);
            p.setProperty("mail.smtp.host", imapServer);
            Session session = Session.getDefaultInstance(p, null);
            Store store = session.getStore(protocol);
            store.connect(imapServer, username, password);
            Folder folder = store.getFolder("INBOX");
            FlagTerm ft = new FlagTerm(new Flags(Flags.Flag.SEEN), true);
            //如果需要在取得邮件数后将邮件置为已读则这里需要使用READ_WRITE,否则READ_ONLY就可以
            folder.open(Folder.READ_ONLY);
            Message message[] = folder.search(ft);
            logger.info("邮件数量:　" + message.length);
            mailThread.run(message);
        } catch (NoSuchProviderException e) {
            e.printStackTrace();
        } catch (MessagingException e) {
            e.printStackTrace();
        }
    }
}

定时任务

package com.springbootemaildemo.decode;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.EnableScheduling;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;

@Component
@EnableScheduling
public class MailTask {
    private static final Logger logger = LoggerFactory.getLogger(MailTask.class);

    @Autowired
    MailMain mailMain;

    //直接指定时间间隔，例如：100秒
    @Scheduled(fixedRate = 100000)
    public void sendJob() {
        logger.info("定时任务开始..........................");
        mailMain.run();
        logger.info("定时任务结束..........................");
    }
}

Main方法：

package com.springbootemaildemo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.scheduling.annotation.EnableScheduling;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

/**
 * 引入了一个注解@EnableSwagger2来启动swagger注解。
 * （启动该注解使得用在controller中的swagger注解生效，覆盖的范围由@ComponentScan的配置来指定，
 * 这里默认指定为根路径”com.springboot”下的所有controller）
 * 也可以单独写swaggerConfigura
 */
@EnableScheduling //启动定时任务
@EnableSwagger2             //启动swagger注解
@SpringBootApplication
public class MailApplication {
    public static void main(String[] args) {
        SpringApplication.run(MailApplication.class, args);
    }
}