SSL方式获取邮箱收件箱

package emailUtil;

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.util.Properties;
import javax.mail.Address;
import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.NoSuchProviderException;
import javax.mail.Part;
import javax.mail.Session;
import javax.mail.Store;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeUtility;

public class GetMailBySSL {
public GetMailBySSL() {
try {
// 1. 设置连接信息, 生成一个 Session
String protocol = "pop3";
boolean isSSL = true;
String host = "pop.qq.com";
int port = 995;
String username = "邮箱用户名";
String password = "邮箱授权码";

Properties props = new Properties();
props.put("mail.pop3.ssl.enable", isSSL);
props.put("mail.pop3.host", host);
props.put("mail.pop3.port", port);

Session session = Session.getDefaultInstance(props);
// 2. 获取 Store 并连接到服务器
Store store = session.getStore(protocol);
store.connect(username, password);
Folder folder = store.getDefaultFolder();// 默认父目录
if (folder == null) {
System.out.println("服务器不可用");
return;
}
/*
* System.out.println("默认信箱名:" + folder.getName());
*
* Folder[] folders = folder.list();// 默认目录列表 for(int i = 0; i <
* folders.length; i++) { System.out.println(folders[0].getName());
* } System.out.println("默认目录下的子目录数: " + folders.length);
*/
Folder popFolder = folder.getFolder("INBOX");// 获取收件箱
popFolder.open(Folder.READ_WRITE);// 可读邮件,可以删邮件的模式打开目录
// 4. 列出来收件箱 下所有邮件
Message[] messages = popFolder.getMessages();
// 取出来邮件数
int msgCount = popFolder.getMessageCount();
System.out.println("共有邮件: " + msgCount + "封");
// FetchProfile fProfile = new FetchProfile();// 选择邮件的下载模式,
// 根据网速选择不同的模式
// fProfile.add(FetchProfile.Item.ENVELOPE);
// folder.fetch(messages, fProfile);// 选择性的下载邮件
// 5. 循环处理每个邮件并实现邮件转为新闻的功能
for (int i = 0; i < msgCount; i++) {
// 单个邮件
System.out.println("第" + i + "邮件开始");
mailReceiver(messages[i]);
System.out.println("第" + i + "邮件结束");
// 邮件读取用来校验
messages[i].writeTo(new FileOutputStream("D:/pop3MailReceiver"
+ i + ".eml"));
}
// 7. 关闭 Folder 会真正删除邮件, false 不删除
popFolder.close(true);
// 8. 关闭 store, 断开网络连接
store.close();
} catch (NoSuchProviderException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}

/**
* 解析邮件
*
* @param messages
*            邮件对象
* @param i
* @return
* @throws IOException
* @throws MessagingException
* @throws FileNotFoundException
* @throws UnsupportedEncodingException
*/
private void mailReceiver(Message msg) throws Exception {
// 发件人信息
Address[] froms = msg.getFrom();
if (froms != null) {
// System.out.println("发件人信息:" + froms[0]);
InternetAddress addr = (InternetAddress) froms[0];
System.out.println("发件人地址:" + addr.getAddress());
System.out.println("发件人显示名:" + addr.getPersonal());
}
System.out.println("邮件主题:" + msg.getSubject());
// getContent() 是获取包裹内容, Part相当于外包装
Object o = msg.getContent();
if (o instanceof Multipart) {
Multipart multipart = (Multipart) o;
reMultipart(multipart);
} else if (o instanceof Part) {
Part part = (Part) o;
rePart(part);
} else {
System.out.println("类型" + msg.getContentType());
System.out.println("内容" + msg.getContent());
}
}

/**
* @param part
*            解析内容
* @throws Exception
*/
private void rePart(Part part) throws MessagingException,
UnsupportedEncodingException, IOException, FileNotFoundException {
if (part.getDisposition() != null) {

String strFileNmae = MimeUtility.decodeText(part.getFileName()); // MimeUtility.decodeText解决附件名乱码问题
System.out.println("发现附件: "
+ MimeUtility.decodeText(part.getFileName()));
System.out.println("内容类型: "
+ MimeUtility.decodeText(part.getContentType()));
System.out.println("附件内容:" + part.getContent());
InputStream in = part.getInputStream();// 打开附件的输入流
// 读取附件字节并存储到文件中
java.io.FileOutputStream out = new FileOutputStream(strFileNmae);
int data;
while ((data = in.read()) != -1) {
out.write(data);
}
in.close();
out.close();
} else {
if (part.getContentType().startsWith("text/plain")) {
System.out.println("文本内容：" + part.getContent());
} else {
// System.out.println("HTML内容：" + part.getContent());
}
}
}

/**
* @param multipart
*            // 接卸包裹（含所有邮件内容(包裹+正文+附件)）
* @throws Exception
*/
private void reMultipart(Multipart multipart) throws Exception {
// System.out.println("邮件共有" + multipart.getCount() + "部分组成");
// 依次处理各个部分
for (int j = 0, n = multipart.getCount(); j < n; j++) {
// System.out.println("处理第" + j + "部分");
Part part = multipart.getBodyPart(j);// 解包, 取出 MultiPart的各个部分,
// 每部分可能是邮件内容,
// 也可能是另一个小包裹(MultipPart)
// 判断此包裹内容是不是一个小包裹, 一般这一部分是 正文 Content-Type: multipart/alternative
if (part.getContent() instanceof Multipart) {
Multipart p = (Multipart) part.getContent();// 转成小包裹
// 递归迭代
reMultipart(p);
} else {
rePart(part);
}
}
}

/**
* @param args
*/
public static void main(String[] args) {
new GetMailBySSL();
}
}

package com.diannuo.util.emailUtil;

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.Date;
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 yh
*
*/
public class GetBillByMail {

private MimeMessage mimeMessage = null;
private String saveAttachPath = ""; // 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 GetBillByMail() {
}

public GetBillByMail(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 　
*/
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);
}
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 {
//						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 　
*/
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 　
*/
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 　
*/
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();
// 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 {

}
}

/**
* 　　*　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;
}
if (replySign) {
System.out.println("该邮件需要回复");
} else {
System.out.println("该邮件不需要回复");
}
return replySign;
}

/**
*　获得此邮件的Message-ID 　　
*/
public String getMessageId() throws MessagingException {
String messageID = mimeMessage.getMessageID();
System.out.println("邮件ID: " + messageID);
return messageID;
}

/**
* 判断此邮件是否已读，如果未读返回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的长度:　" + flag.length);
for (int i = 0; i < flag.length; i++) {
if (flag[i] == Flags.Flag.SEEN) {
isNew = true;
System.out.println("seen email...");
// 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;
}

/**
* 　*　保存附件 　
*/

public void 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();
if (fileName.toLowerCase().indexOf("gb2312") != -1) {
fileName = MimeUtility.decodeText(fileName);
}
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());
}
}

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

/**
* 　*　设置日期显示格式 　
*/
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("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 {
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();
}
}

/**
*　ReceiveEmail类测试
*/
public static void main(String args[]) throws Exception {
String host = "pop.163.com";
String username = "xxxxxx@163.com";
String password = "邮箱授权码";

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();
GetBillByMail re = null;

for (int i = 0; i < message.length; i++) {
re = new GetBillByMail((MimeMessage) message[i]);
System.out.println("邮件　" + i + "　主题:　" + re.getSubject());
System.out.println("邮件　" + i + "　发送时间:　" + re.getSentDate());
System.out.println("邮件　" + i + "　是否需要回复:　" + re.getReplySign());
System.out.println("邮件　" + i + "　是否已读:　" + re.isNew());
System.out.println("邮件　" + i + "　是否包含附件:　"
+ re.isContainAttach((Part) message[i]));
System.out.println("邮件　" + i + "　发送人地址:　" + re.getFrom());
System.out
.println("邮件　" + i + "　收信人地址:　" + re.getMailAddress("to"));
System.out.println("邮件　" + i + "　抄送:　" + re.getMailAddress("cc"));
System.out.println("邮件　" + i + "　暗抄:　" + re.getMailAddress("bcc"));
re.setDateFormat("yy年MM月dd日　HH:mm");
System.out.println("邮件　" + i + "　发送时间:　" + re.getSentDate());
System.out.println("邮件　" + i + "　邮件ID:　" + re.getMessageId());
re.getMailContent((Part) message[i]);
System.out.println("邮件　" + i + "　正文内容:　\r\n" + re.getBodyText());
re.setAttachPath("e:\\");
re.saveAttachMent((Part) message[i]);
}
}
}