邮件发送和接收已经全部实现，大家在转发市请注明出处(我这也是参考了N多大牛的作品)：
//附件接收实现代码：
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Properties;
import javax.mail.BodyPart;
import javax.mail.Flags;
import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.Part;
import javax.mail.Session;
import javax.mail.Store;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeUtility;
/**
* @author Administrator
*
*/
public class PraseMimeMessage {
private MimeMessage mimeMessage = null;
private String saveAttachPath = "d:\\";// 附件下载后的存放目录
private StringBuffer bodytext = new StringBuffer();
// 存放邮件内容的StringBuffer对象
private String dateformat = "yy-MM-dd HH:mm";// 默认的日前显示格式
/**
* 构造函数,初始化一个MimeMessage对象
*/
public PraseMimeMessage() {
}
public PraseMimeMessage(MimeMessage mimeMessage) {
this.mimeMessage = mimeMessage;
// System.out.println("create a PraseMimeMessage object........");
}
public void setMimeMessage(MimeMessage mimeMessage) {
this.mimeMessage = mimeMessage;
}
/**
*
* 获取发件人的姓名和密码
*
* @return
*/
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;
}
/**
* 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 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;
}
/**
*
* 获取邮件主题
*/
public String getSubject() throws MessagingException {
String subject = "";
try {
subject = MimeUtility.decodeText(mimeMessage.getSubject());
if (subject == null)
subject = "";
} catch (Exception exce) {
}
return subject;
}
/*
* 获取邮件发送日期
*
*/
public java.util.Date getSentDate() throws Exception {
Date sentdate = mimeMessage.getSentDate();
SimpleDateFormat format = new SimpleDateFormat(dateformat);
return sentdate;
}
/**
* 获取邮件正文
*
* @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
*
*
*/
public void getMailContent(Part part) 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());
} else if (part.isMimeType("text/html") && !conname) {
bodytext.append((String) part.getContent());
} 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 {
}
}
/**
*
* 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"
*
*/
public boolean getReplySign() throws MessagingException {
boolean replysign = false;
String needreply[] = mimeMessage
.getHeader("Disposition-Notification-To");
if (needreply != null) {
replysign = true;
}
return replysign;
}
/*
* 获得此邮件的Message-ID
*
*/
public String getMessageId() throws MessagingException {
return mimeMessage.getMessageID();
}
/*
* 【判断此邮件是否已读，如果未读返回返回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;
}
/**
*
* 判断此邮件是否包含附件
*
*/
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;
}
//base64解码
private static String base64Decoder(String s) throws Exception {
sun.misc.BASE64Decoder decoder = new sun.misc.BASE64Decoder();
byte[] b = decoder.decodeBuffer(s);
return (new String(b));
}
/*
* 保存附件
*
*/
public String saveAttachMent(Part part) 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();
/*System.out.println(fileName);
fileName=fileName.substring(fileName.indexOf("=?GBK?B?"));
System.out.println(fileName);
fileName=fileName.substring(0, fileName.length()-2);
System.out.println(fileName);*/
// .substring(fileName.lastIndexOf("=?GBK?B?"), fileName.indexOf("?="));
String s = fileName.substring(8, fileName.indexOf("?="));;
fileName = base64Decoder(s);
if (fileName.toLowerCase().indexOf("gb2312") != -1) {
fileName = MimeUtility.decodeText(fileName);
}
// saveFile(fileName,mpart.getInputStream());
saveFile(fileName, mpart.getInputStream());
} else if (mpart.isMimeType("multipart/*")) {
saveAttachMent(mpart);
} else {
fileName = mpart.getFileName();
if ((fileName != null)
&& (fileName.toLowerCase().indexOf("GB2312") != -1)) {
fileName = MimeUtility.decodeText(fileName);
saveFile(fileName, mpart.getInputStream());
}
}
}
} else if (part.isMimeType("message/rfc822")) {
saveAttachMent((Part) part.getContent());
}
return fileName;
}
/**
* 【设置附件存放路径】
*/
public void setAttachPath(String attachpath) {
this.saveAttachPath = attachpath;
}
/**
*
* 设置日期显示本格式
*/
public void setDateFormat(String format) throws Exception {
this.dateformat = format;
}
/**
* 【获得附件存放路径】
*/
public String getAttachPath() {
return saveAttachPath;
}
/**
* 【真正的保存附件到指定目录里】
*/
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 = "c:\\tmp";
} else {
separator = "/";
storedir = "/tmp";
}
File storefile = new File(storedir + separator + fileName);
// System.out.println("storefile's path: " + storefile.toString());
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("文件保存失败!");
} finally {
bos.close();
bis.close();
}
}
/**
* PraseMimeMessage类测试
*/
public static void main(String args[]) throws Exception {
String host = "POP3.163.com";// 【POP3.163.com】
String username = "li";// 【yuxia2217】
String password = "***";// 【........】
Properties props = new Properties();
Session session = Session.getDefaultInstance(props, null);
Store store = session.getStore("pop3");
store.connect(host, username, password);
Folder folder = store.getFolder("INBOX");
folder.open(Folder.READ_ONLY);
Message message[] = folder.getMessages();
System.out.println("Messages's length: " + message.length);
PraseMimeMessage pmm = null;
for (int i = 0; i < message.length; i++) {
pmm = new PraseMimeMessage((MimeMessage) message[i]);
System.out
.println("Message " + i + " subject: " + pmm.getSubject());
System.out.println("Message " + i + " sentdate: "
+ pmm.getSentDate());
System.out.println("Message " + i + " replysign: "
+ pmm.getReplySign());
System.out.println("Message 新的" + i + " hasRead: " + pmm.isNew());
System.out.println("Message 附件" + i + " containAttachment: "
+ pmm.isContainAttach((Part) message[i]));
System.out.println("Message " + i + " form: " + pmm.getFrom());
System.out.println("Message " + i + " to: "
+ pmm.getMailAddress("to"));
System.out.println("Message " + i + " cc: "
+ pmm.getMailAddress("cc"));
System.out.println("Message " + i + " bcc: "
+ pmm.getMailAddress("bcc"));
pmm.setDateFormat("yy年MM月dd日 HH:mm");
System.out.println("Message" + i + " sentdate: "
+ pmm.getSentDate());
System.out.println("Message " + i + " Message-ID: "
+ pmm.getMessageId());
pmm.getMailContent((Part) message[i]);
System.out.println("Message 正文" + i + " bodycontent: \r\n"
+ pmm.getBodyText());
pmm.setAttachPath("D:\\image");
pmm.saveAttachMent((Part) message[i]);
}
}
public List<MailInfo> receive(MailInfo mailInfo)throws Exception{
List<MailInfo> list=new ArrayList<MailInfo>();
Properties props = new Properties();
Session session = Session.getDefaultInstance(props, null);
Store store = session.getStore("pop3");
store.connect(mailInfo.getHost(), mailInfo.getUsername(), mailInfo.getPassword());
Folder folder = store.getFolder("INBOX");
folder.open(Folder.READ_ONLY);
Message message[] = folder.getMessages();
// System.out.println("Messages's length: " + message.length);
PraseMimeMessage pmm = null;
for (int i = 0; i < message.length; i++) {
MailInfo mail=new MailInfo();
mail.setMailnumber(message.length);
pmm = new PraseMimeMessage((MimeMessage) message[i]);
// System.out
// .println("Message " + i + " subject: " + pmm.getSubject());
mail.setSubject(message[i].getSubject());
// System.out.println("Message " + i + " sentdate: "
// + pmm.getSentDate());
mail.setSentdate(pmm.getSentDate());
// System.out.println("Message " + i + " replysign: "
// + pmm.getReplySign());
mail.setReplysign(pmm.getReplySign());
// System.out.println("Message 新的" + i + " hasRead: " + pmm.isNew());
// mail.setRead(pmm.isNew());
// System.out.println("Message 附件" + i + " containAttachment: "
// + pmm.isContainAttach((Part) message[i]));
mail.setExistsFile(pmm.isContainAttach((Part) message[i]));
// System.out.println("Message " + i + " form: " + pmm.getFrom());
mail.setFromAddress(pmm.getFrom().substring(1, pmm.getFrom().length()).replaceAll(">", ""));
// System.out.println("Message " + i + " to: "
// + pmm.getMailAddress("to"));
mail.setToAddress(pmm.getMailAddress("to").substring(1, pmm.getMailAddress("to").length()).replaceAll(">", ""));
// System.out.println("Message " + i + " cc: "
// + pmm.getMailAddress("cc"));
// mail.setMailauthor(pmm.getMailAddress("cc"));
// System.out.println("Message " + i + " bcc: "
// + pmm.getMailAddress("bcc"));
pmm.setDateFormat("yy年MM月dd日 HH:mm");
// System.out.println("Message" + i + " sentdate: "
// + pmm.getSentDate());
// System.out.println("Message " + i + " Message-ID: "
// + pmm.getMessageId());
mail.setMessageid(pmm.getMessageId());
pmm.getMailContent((Part) message[i]);
// System.out.println("Message 正文" + i + " bodycontent: \r\n"
// + pmm.getBodyText());
mail.setContent(pmm.getBodyText());
pmm.setAttachPath(mailInfo.getFilepath());
String fileName=pmm.saveAttachMent((Part) message[i]);
mail.setFilename(fileName);
String receivepath=mailInfo.getFilepath()+"\\"+fileName;
mail.setReceivepath(receivepath);
list.add(mail);
}
return list;
}
}
//接收邮件测试类
import java.util.List;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
public class ReceiveTest{
@Before
public void setUp() throws Exception {
}
@After
public void tearDown() throws Exception {
}
@Test
public void ReceiveMailTest()throws Exception{
MailInfo mailInfo=new MailInfo();
mailInfo.setHost("pop.163.com");
mailInfo.setUsername("liposter");
mailInfo.setPassword("**********");
mailInfo.setFilepath("D:\\image");
List<MailInfo> list=new PraseMimeMessage().receive(mailInfo);
for(int i=0;i<list.size();i++){
System.out.println("Mailnumber="+list.get(i).getMailnumber());
System.out.println("Subject="+list.get(i).getSubject());
System.out.println("Content="+list.get(i).getContent());
System.out.println("Filename="+list.get(i).getFilename());
System.out.println("SentDate="+list.get(i).getSentdate());
System.out.println("Messageid="+list.get(i).getMessageid());
System.out.println("ExistsFile="+list.get(i).isExistsFile());
System.out.println("Read="+list.get(i).isRead());
System.out.println("Replysign="+list.get(i).isReplysign());
System.out.println("Receivepath="+list.get(i).getReceivepath());
System.out.println("FromAddress="+list.get(i).getFromAddress());
System.out.println("ToAddress="+list.get(i).getToAddress());
}
}
}