工具類
package top.glory.admin.modules.mail;
/**
*/
import java.text.*;
import java.util.*;
import javax.mail.*;
import javax.mail.internet.*;
/**
* 有一封郵件就需要建立一個ReciveMail對象
*/
public class ReciveMail {
private MimeMessage mimeMessage = null;
private final String dateformat = "yy-MM-dd HH:mm"; //默認的日前顯示格式
private String saveAttachPath; //附件下載後的存放目錄
private String host; //smtp.126.com 的host
private int port; //收件服務器 端口
private String file;
private String username; //郵箱賬戶
private String password; //授權的密碼
private String popHost; //pop3的host pop.126.com
private StringBuffer bodytext = new StringBuffer();//存放郵件內容
public ReciveMail() {
}
public ReciveMail(MimeMessage mimeMessage) {
this.mimeMessage = mimeMessage;
}
/**
* 獲得發件人的地址和姓名
*/
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 = personal + "<" + from + ">";
return fromaddr;
}
/**
* 獲得郵件的收件人，抄送，和密送的地址和姓名，根據所傳遞的參數的不同 "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 email = address[i].getAddress();
if (email == null)
email = "";
else {
email = MimeUtility.decodeText(email);
}
String personal = address[i].getPersonal();
if (personal == null)
personal = "";
else {
personal = MimeUtility.decodeText(personal);
}
String compositeto = personal + "<" + email + ">";
mailaddr += "," + compositeto;
}
mailaddr = mailaddr.substring(1);
}
} else {
throw new Exception("Error emailaddr type!");
}
return mailaddr;
}
/**
* 獲得郵件主題
*/
public String getSubject() throws MessagingException {
String subject = "";
try {
subject = MimeUtility.decodeText(mimeMessage.getSubject());
if (subject == null)
subject = "";
} catch (Exception exce) {
}
return subject;
}
/**
* 判斷此郵件是否需要回執，如果需要回執返回"true",否則返回"false"
*/
public boolean getReplySign() throws MessagingException {
boolean replysign = false;
String needreply[] = mimeMessage
.getHeader("Disposition-Notification-To");
if (needreply != null) {
replysign = true;
}
return replysign;
}
/**
* 獲得此郵件的Message-ID
*/
public String getMessageId() throws MessagingException {
return mimeMessage.getMessageID();
}
/**
* 【判斷此郵件是否已讀，如果未讀返回返回false,反之返回true】
*/
public boolean isNew() throws MessagingException {
boolean isnew = false;
Flags flags = ((Message) mimeMessage).getFlags();
Flags.Flag[] flag = flags.getSystemFlags();
System.out.println("flags's length: " + flag.length);
for (int i = 0; i < flag.length; i++) {
if (flag[i] == Flags.Flag.SEEN) {
isnew = true;
System.out.println("seen Message.......");
break;
}
}
return isnew;
}
/**
* 獲得郵件發送日期
*/
public String getSentDate() throws Exception {
Date sentdate = mimeMessage.getSentDate();
SimpleDateFormat format = new SimpleDateFormat(dateformat);
return format.format(sentdate);
}
public MimeMessage getMimeMessage() {
return mimeMessage;
}
public void setMimeMessage(MimeMessage mimeMessage) {
this.mimeMessage = mimeMessage;
}
public StringBuffer getBodytext() {
return bodytext;
}
public void setBodytext(StringBuffer bodytext) {
this.bodytext = bodytext;
}
public String getPopHost() {
return popHost;
}
public void setPopHost(String popHost) {
this.popHost = popHost;
}
public String getHost() {
return host;
}
public void setHost(String host) {
this.host = host;
}
public int getPort() {
return port;
}
public void setPort(int port) {
this.port = port;
}
public String getFile() {
return file;
}
public void setFile(String file) {
this.file = file;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
/**
* 【設置附件存放路徑】
*/
public void setAttachPath(String attachpath) {
this.saveAttachPath = attachpath;
}
/**
* 獲得郵件正文內容
*/
public String getBodyText() {
return bodytext.toString();
}
/**
* 【獲得附件存放路徑】
*/
public String getAttachPath() {
return saveAttachPath;
}
}
實現代碼
package top.glory.admin.modules.mail;
import javax.mail.*;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeUtility;
import java.io.*;
import java.util.Calendar;
import java.util.Date;
import java.util.Properties;
/**
* Created by xxon 2017/4/6.
*/
public class ReciveMailUtil {
private StringBuffer bodytext = new StringBuffer();//存放郵件內容
public ReciveMailUtil() {
}
private static ReciveMailUtil reciveMailUtil;
/**
*
* @return
*/
public static ReciveMailUtil getInstance() {
if (reciveMailUtil == null) {
synchronized (ReciveMailUtil.class) {
if (reciveMailUtil == null) {
reciveMailUtil = new ReciveMailUtil();
}
}
}
return reciveMailUtil;
}
/**
* 解析郵件，把得到的郵件內容保存到一個StringBuffer對象中，解析郵件 主要是根據MimeType類型的不同執行不同的操作，一步一步的解析
*/
public void getMailContent(Part part, ReciveMail reciveMail) throws Exception {
String contenttype = part.getContentType();
int nameindex = contenttype.indexOf("name");
boolean conname = false;
if (nameindex != -1)
conname = true;
System.out.println("CONTENTTYPE: " + contenttype);
if (part.isMimeType("text/plain") && !conname) {
bodytext.append((String) part.getContent());
reciveMail.setBodytext(bodytext);
} else if (part.isMimeType("text/html") && !conname) {
bodytext.append((String) part.getContent());
reciveMail.setBodytext(bodytext);
} 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), reciveMail);
}
} else if (part.isMimeType("message/rfc822")) {
getMailContent((Part) part.getContent(), reciveMail);
} else {
}
}
/**
* 判斷此郵件是否包含附件
*/
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((Part) 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】
*/
public void saveAttachMent(Part part, ReciveMail reciveMail) throws Exception {
String fileName = "";
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();
fileName = MimeUtility.decodeText(fileName); //修改後
/*if (fileName.toLowerCase().indexOf("gb2312") != -1) {
fileName = MimeUtility.decodeText(fileName);
}*/
saveFile(fileName, mpart.getInputStream(), reciveMail);
} else if (mpart.isMimeType("multipart/*")) {
saveAttachMent(mpart, reciveMail);
} else {
fileName = mpart.getFileName();
/*if ((fileName != null)
&& (fileName.toLowerCase().indexOf("GB2312") != -1)) {
fileName = MimeUtility.decodeText(fileName);
saveFile(fileName, mpart.getInputStream(), reciveMail);
}*/
if (fileName != null) {
fileName = MimeUtility.decodeText(fileName);
saveFile(fileName, mpart.getInputStream(), reciveMail);
}
}
}
} else if (part.isMimeType("message/rfc822")) {
saveAttachMent((Part) part.getContent(), reciveMail);
}
}
/**
* 【真正的保存附件到指定目錄裏】
*/
private void saveFile(String fileName, InputStream in, ReciveMail reciveMail) throws Exception {
String osName = System.getProperty("os.name");
String storedir = reciveMail.getAttachPath();
String separator = "";
if (osName == null)
osName = "";
if (osName.toLowerCase().indexOf("win") != -1) {
separator = "\\";
if (storedir == null || storedir.equals(""))
storedir = "c:\\tmp";
} else {
separator = "/";
storedir = "/tmp";
}
/*Calendar calendar = Calendar.getInstance();
long millis = calendar.getTimeInMillis();
fileName = "簡歷"+millis +".docx";
*/
File storefile = new File(storedir + separator + fileName);
System.out.println("storefile's path: " + storefile.toString());
for (int i = 0; storefile.exists(); i++) {
storefile = new File(storedir + separator + fileName + i);
}
BufferedOutputStream bos = null;
BufferedInputStream bis = null;
try {
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();
throw new Exception("文件保存失敗!");
} finally {
bos.close();
bis.close();
}
}
public static void reciveMail(ReciveMail pmm,String fileSavePath) throws Exception {
Properties props = System.getProperties();
/*
props.put("mail.smtp.host", pmm.getHost());//收件不需要這個
*/
// props.put("mail.smtp.auth", "true");
props.put("mail.imap.auth.login.disable", "true");
Session session = Session.getDefaultInstance(props, null);
URLName urln = new URLName("imap", pmm.getPopHost(), pmm.getPort(), pmm.getFile(), pmm.getUsername(), pmm.getPassword());
Store store = session.getStore(urln);
store.connect();
Folder folder = store.getFolder("INBOX");
folder.open(Folder.READ_WRITE);
Message message[] = folder.getMessages();
System.out.println("Messages's length: " + message.length);
for (int i = 0; i < message.length; i++) {
System.out.println("==========第" + (i + 1) + "份郵件============");
pmm = new ReciveMail((MimeMessage) message[i]);
if (pmm.isNew()) {
System.out.println("已讀--------不處理--------");
continue;
}else {
System.out.println("未讀----------------");
System.out.println(" 主題: " + pmm.getSubject());
System.out.println(" 發送日期: " + pmm.getSentDate());
System.out.println(" 是否需要回執: " + pmm.getReplySign());
System.out.println(" 是否已讀: " + pmm.isNew());
System.out.println(" 是否包含文件: " + getInstance().isContainAttach((Part) message[i]));
System.out.println(" 誰發送的: " + pmm.getFrom());
System.out.println(" 發送給誰的: " + pmm.getMailAddress("to"));
System.out.println(" 抄送: " + pmm.getMailAddress("cc"));
System.out.println(" 密件抄送: " + pmm.getMailAddress("bcc"));
System.out.println("ID: " + pmm.getMessageId());
// 獲得郵件內容===============
getInstance().getMailContent((Part) message[i], pmm);
String content = pmm.getBodyText().substring(pmm.getBodyText().indexOf("<"), pmm.getBodyText().lastIndexOf(">") + 1);
System.out.println(" 內容: \r\n" + content);
pmm.setAttachPath(fileSavePath);
getInstance().saveAttachMent((Part) message[i], pmm);
message[i].setFlag(Flags.Flag.SEEN, true);//設置爲已讀，不能使用。。。。
// message[i].saveChanges();
}
}
}
/**
* PraseMimeMessage類測試
*/
public static void main(String args[]) throws Exception {
ReciveMail pmm = new ReciveMail();
// String popHost = "pop.163.com";
String popHost = "imap.163.com";
int port = 143;//端口
String file = null;
String username = "**********";
String password = "**************";
pmm.setPopHost(popHost);
pmm.setPort(port);
pmm.setFile(file);
pmm.setUsername(username);
pmm.setPassword(password);
reciveMail(pmm,"C:\\");//記得設置文件保存路徑
}
}