获取163邮箱的邮件 并下载附件
Posted LTG01
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老师要求让获取邮箱邮件内容，发件人、收件人、发送时间等等，转存到excel里面，并下载邮件带的附件，通过网上搜集资料，整理出如下代码，只是实现功能，代码并未优化。
使用的时候只需要填写自己邮箱账号密码就可
下面贴出代码，
package ltg.defualt;
import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStream;
import ltg.helper.POP3ReceiveMailTest;
import ltg.helper.helpHandler;
public class test {
/**
* @param args
*/
public static void main(String[] args) {
try
{
//输出Excel
<strong><span style="color:#ff6666;">File fileWrite = new File("d:/testWrite.xls"); </span> </strong>
fileWrite.createNewFile();
OutputStream osq = new FileOutputStream(fileWrite);
//helpHandler.writeExcel(osq);
helpHandler handler=new helpHandler(osq);
handler.receive();
}
catch(Exception e)
{
e.printStackTrace();
}
}
}
获取的内容就会存在d盘的testWrite.xls两个类如下
package ltg.helper;
import java.io.IOException;
import java.io.OutputStream;
import jxl.*;
import jxl.write.*;
import jxl.write.biff.RowsExceededException;
import java.util.Properties;
import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Store;
import javax.mail.internet.MimeMessage;
public class helpHandler {
static OutputStream osq;
static WritableWorkbook wwb;
static WritableSheet ws;
<span style="font-size:18px;color:#ff6666;"><strong>static String array[] = { "主题", "发件人", "收件人", "发送时间", "是否已读", "邮件优先级",
"是否需要回执", "邮件大小", "是否包含附件", "邮件正文" };</strong></span>
public helpHandler(OutputStream os) throws IOException {
this.osq = os;
}
/**
* 接收邮件
*/
public static void receive() throws Exception {
// 准备连接服务器的会话信息
Properties props = new Properties();
props.setProperty("mail.store.protocol", "pop3"); // 协议
props.setProperty("mail.pop3.port", "110"); // 端口
props.setProperty("mail.pop3.host", "pop3.163.com"); // pop3服务器
// 创建Session实例对象
Session session = Session.getInstance(props);
Store store = session.getStore("pop3");
<span style="font-size:32px;"> <span style="color:#ff0000;">store.connect("163邮箱账号", "密码");</span></span>
// 获得收件箱
Folder folder = store.getFolder("INBOX");
/*
* Folder.READ_ONLY：只读权限 Folder.READ_WRITE：可读可写（可以修改邮件的状态）
*/
folder.open(Folder.READ_WRITE); // 打开收件箱
// 由于POP3协议无法获知邮件的状态,所以getUnreadMessageCount得到的是收件箱的邮件总数
System.out.println("未读邮件数: " + folder.getUnreadMessageCount());
// 由于POP3协议无法获知邮件的状态,所以下面得到的结果始终都是为0
System.out.println("删除邮件数: " + folder.getDeletedMessageCount());
System.out.println("新邮件: " + folder.getNewMessageCount());
// 获得收件箱中的邮件总数
System.out.println("邮件总数: " + folder.getMessageCount());
// 得到收件箱中的所有邮件,并解析
Message[] messages = folder.getMessages();
parseMessage(messages);
// 释放资源
folder.close(true);
store.close();
}
/**
* 解析邮件
*
* @param messages
* 要解析的邮件列表
* @throws WriteException
* @throws RowsExceededException
*/
public static void parseMessage(Message... messages)
throws MessagingException, IOException, RowsExceededException,
WriteException {
if (messages == null || messages.length < 1)
throw new MessagingException("未找到要解析的邮件!");
try {
wwb = Workbook.createWorkbook(osq);
// 创建Excel工作表 指定名称和位置
ws = wwb.createSheet("Test Sheet 1", 0);
// **************往工作表中添加数据*****************
// "未读邮件数", "删除邮件数", "新邮件", "邮件总数",
// 写入标题
for (int i = 0; i < array.length; i++) {
Label labe1 = new Label(i, 0, array[i]);
ws.addCell(labe1);
}
// 解析所有邮件
for (int i = 0, count = messages.length; i < count; i++) {
MimeMessage msg = (MimeMessage) messages[i];
System.out.println("------------------解析第"
+ msg.getMessageNumber() + "封邮件-------------------- ");
boolean b1 = POP3ReceiveMailTest.isSeen(msg);
boolean isContainerAttachment = POP3ReceiveMailTest
.isContainAttachment(msg);
boolean b2=POP3ReceiveMailTest.isReplySign(msg);
String str1 = "";
String str2 = "";
String str3 = "";
if (b1)
str1 = "是";
else
str1 = "否";
if (isContainerAttachment)
str3 = "是";
else
str3 = "否";
if (b2)
str2 = "是";
else
str2 = "否";
StringBuffer content = new StringBuffer(30);
POP3ReceiveMailTest.getMailTextContent(msg, content);
String array1[] = { POP3ReceiveMailTest.getSubject(msg),
POP3ReceiveMailTest.getFrom(msg),
POP3ReceiveMailTest.getReceiveAddress(msg, null),
POP3ReceiveMailTest.getSentDate(msg, null), str1,
POP3ReceiveMailTest.getPriority(msg), str2,
msg.getSize() * 1024 + "kb", str3, content.toString() };
str1 = "";
str2 = "";
str3 = "";
for (int j = 0; j < array1.length; j++) {
Label labe2 = new Label(j, i + 1, array1[j]);
ws.addCell(labe2);
}
System.out
.println("主题: " + POP3ReceiveMailTest.getSubject(msg));
System.out.println("发件人: " + POP3ReceiveMailTest.getFrom(msg));
System.out.println("收件人："
+ POP3ReceiveMailTest.getReceiveAddress(msg, null));
System.out.println("发送时间："
+ POP3ReceiveMailTest.getSentDate(msg, null));
System.out.println("是否已读：" + POP3ReceiveMailTest.isSeen(msg));
System.out.println("邮件优先级："
+ POP3ReceiveMailTest.getPriority(msg));
System.out.println("是否需要回执："
+ POP3ReceiveMailTest.isReplySign(msg));
System.out.println("邮件大小：" + msg.getSize() * 1024 + "kb");
System.out.println("是否包含附件：" + isContainerAttachment);
if (isContainerAttachment) {
<span style="font-size:24px;"><strong>POP3ReceiveMailTest.saveAttachment(msg, "d:\\mailtmp\\"
+ msg.getSubject() + "_"); // 保存附件</strong></span>
}
// StringBuffer content = new StringBuffer(30);
// POP3ReceiveMailTest.getMailTextContent(msg, content);
// System.out.println("邮件正文：" + (content.length() > 100 ?
// content.substring(0,100) + "..." : content));
System.out.println("邮件正文：" + content);
System.out.println("------------------第"
+ msg.getMessageNumber()
+ "封邮件解析结束-------------------- ");
System.out.println();
}
// 写入工作表
wwb.write();
wwb.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
String array[] = { "主题", "发件人", "收件人", "发送时间", "是否已读", "邮件优先级", "是否需要回执", "邮件大小", "是否包含附件", "邮件正文" };这是excel表的字段 顺序不可变 要和下面的顺序一致。下载的相关文档和图片在D盘的mailtmp文件夹下
package ltg.helper;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Properties;
import javax.mail.Address;
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.MimeMultipart;
import javax.mail.internet.MimeUtility;
/**
* 使用POP3协议接收邮件
*/
public class POP3ReceiveMailTest {
/**
* 获得邮件主题
*
* @param msg
* 邮件内容
* @return 解码后的邮件主题
*/
public static String getSubject(MimeMessage msg)
throws UnsupportedEncodingException, MessagingException {
return MimeUtility.decodeText(msg.getSubject());
}
/**
* 获得邮件发件人
*
* @param msg
* 邮件内容
* @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("没有发件人!");
InternetAddress address = (InternetAddress) froms[0];
String person = address.getPersonal();
if (person != null) {
person = MimeUtility.decodeText(person) + " ";
} else {
person = "";
}
from = person + "<" + address.getAddress() + ">";
return from;
}
/**
* 根据收件人类型，获取邮件收件人、抄送和密送地址。如果收件人类型为空，则获得所有的收件人
* <p>
* Message.RecipientType.TO 收件人
* </p>
* <p>
* Message.RecipientType.CC 抄送
* </p>
* <p>
* Message.RecipientType.BCC 密送
* </p>
*
* @param msg
* 邮件内容
* @param type
* 收件人类型
* @return 收件人1 <邮件地址1>, 收件人2 <邮件地址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("没有收件人!");
for (Address address : addresss) {
InternetAddress internetAddress = (InternetAddress) address;
receiveAddress.append(internetAddress.toUnicodeString())
.append(",");
}
receiveAddress.deleteCharAt(receiveAddress.length() - 1); // 删除最后一个逗号
return receiveAddress.toString();
}
/**
* 获得邮件发送时间
*
* @param msg
* 邮件内容
* @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);
}
/**
* 判断邮件中是否包含附件
*
* @param msg
* 邮件内容
* @return 邮件中存在附件返回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;
}
/**
* 判断邮件是否已读
*
* @param msg
* 邮件内容
* @return 如果邮件已读返回true,否则返回false
* @throws MessagingException
*/
public static boolean isSeen(MimeMessage msg) throws MessagingException {
return msg.getFlags().contains(Flags.Flag.SEEN);
}
/**
* 判断邮件是否需要阅读回执
*
* @param msg
* 邮件内容
* @return 需要回执返回true,否则返回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;
}
/**
* 获得邮件的优先级
*
* @param msg
* 邮件内容
* @return 1(High):紧急 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 = "紧急";
else if (headerPriority.indexOf("5") != -1
|| headerPriority.indexOf("Low") != -1)
priority = "低";
else
priority = "普通";
}
return priority;
}
/**
* 获得邮件文本内容
*
* @param part
* 邮件体
* @param content
* 存储邮件文本内容的字符串
* @throws MessagingException
* @throws IOException
*/
public static void getMailTextContent(Part part, StringBuffer content)
throws MessagingException, IOException {
// 如果是文本类型的附件，通过getContent方法可以取到文本内容，但这不是我们需要的结果，所以在这里要做判断
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 - 1; i++) {
BodyPart bodyPart = multipart.getBodyPart(i);
getMailTextContent(bodyPart, content);
}
}
}
/**
* 保存附件
*
* @param part
* 邮件中多个组合体中的其中一个组合体
* @param destDir
* 附件保存目录
* @throws UnsupportedEncodingException
* @throws MessagingException
* @throws FileNotFoundException
* @throws IOException
*/
public static void saveAttachment(Part part, String destDir)
throws UnsupportedEncodingException, MessagingException,
FileNotFoundException, IOException {
if (part.isMimeType("multipart/*")) {
Multipart multipart = (Multipart) part.getContent(); // 复杂体邮件
// 复杂体邮件包含多个邮件体
int partCount = multipart.getCount();
for (int i = 0; i < partCount; i++) {
// 获得复杂体邮件中其中一个邮件体
BodyPart bodyPart = multipart.getBodyPart(i);
// 某一个邮件体也有可能是由多个邮件体组成的复杂体
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);
}
}
/**
* 读取输入流中的数据保存至指定目录
*
* @param is
* 输入流
* @param fileName
* 文件名
* @param destDir
* 文件存储目录
* @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();
}
/**
* 文本解码
*
* @param encodeText
* 解码MimeUtility.encodeText(String text)方法编码后的文本
* @return 解码后的文本
* @throws UnsupportedEncodingException
*/
public static String decodeText(String encodeText)
throws UnsupportedEncodingException {
if (encodeText == null || "".equals(encodeText)) {
return "";
} else {
return MimeUtility.decodeText(encodeText);
}
}
}
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