java解析邮件。
依赖包：
<dependency>
<groupId>javax.mail</groupId>
<artifactId>mail</artifactId>
<version>1.4.7</version>
</dependency>注意要获得授权码：
测试结果：
package com.wuxiaolong.springintegrationtest;
import com.sun.org.apache.xerces.internal.impl.dv.util.Base64;
import lombok.extern.slf4j.Slf4j;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import javax.mail.*;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
import javax.mail.internet.MimeUtility;
import javax.mail.search.AndTerm;
import javax.mail.search.SearchTerm;
import javax.mail.search.SentDateTerm;
import javax.mail.search.SubjectTerm;
import java.io.*;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Properties;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
//import com.ncxdkj.util.CharBase64;
/**
* 使用POP3协议解析邮件工具类 https://blog.csdn.net/byteArr/article/details/85625416 https://my.oschina.net/u/2242194/blog/711848
*
* @author bzs on 2018/6/28.
*/
@Slf4j
public class TestEmail {
private static Pattern encodeStringPattern = Pattern.compile(
"=\\?(.+)\\?(B|Q)\\?(.+)\\?=", 34);
private static Pattern subjectStringPattern = Pattern.compile(
"(?:.*?)(=\\?(?:.*?)\\?(?:B|Q)\\?(?:.*?)\\?=)(?:.*?)", 34);
private static Pattern subjectRepeatedStringPattern = Pattern
.compile(
"(?:.*?)(?:(=\\?(?:.*?)\\?(?:B|Q))\\?(?:.*?)(\\?=(?:.*?)(=\\?(?:.*?)\\?(?:B|Q))\\?)(?:.*?)\\?=)(?:.*?)",
34);
public static void main(String[] args) throws Exception{
resceive("[email protected]", "申请的授权码","吴晓龙测试");
}
/**
* 获取邮箱信息
*
* @param emailAdress 需要解析的邮箱地址
* @param password 邮箱的授权密码 不是登录密码
* @throws Exception
*/
public static void resceive(String emailAdress, String password,String projectName) throws Exception {
String port = "110"; // 端口号
String servicePath = "pop.163.com"; // 服务器地址
// 准备连接服务器的会话信息
Properties props = new Properties();
props.setProperty("mail.store.protocol", "pop3"); // 使用pop3协议
props.setProperty("mail.pop3.port", port); // 端口
props.setProperty("mail.pop3.host", servicePath); // pop3服务器
// 创建Session实例对象
Session session = Session.getInstance(props);
Store store = session.getStore("pop3");
store.connect(emailAdress, password); //163邮箱程序登录属于第三方登录所以这里的密码是163给的授权密码而并非普通的登录密码
// 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
log.warn("邮件总数: {}", folder.getMessageCount());
// 得到收件箱中的所有邮件,并解析
// Message[] messages = folder.getMessages();
//筛选邮件
// SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd 01:00:00");
// SearchTerm st=new AndTerm(new SubjectTerm("UpdateFromIESToCargo"),
// new SentDateTerm(6,sf.parse(sf.format(new Date()))) );//6 代表大于等于这时间之后
SearchTerm st=new SubjectTerm(projectName);
Message[] messages = folder.search(st);
//解析邮件
parseMessage(messages);
//得到收件箱中的所有邮件并且删除邮件
// deleteMessage(messages);
//释放资源
folder.close(true);
store.close();
}
/**
* 解析邮件
*
* @param messages 要解析的邮件列表
*/
public static void parseMessage(Message... messages) throws MessagingException, IOException {
if (messages == null || messages.length < 1)
throw new MessagingException("未找到要解析的邮件!");
// 解析所有邮件
for (int i = 0, count = messages.length; i < count; i++) {
MimeMessage msg = (MimeMessage) messages[i];
log.info("------------------解析第" + msg.getMessageNumber() + "封邮件-------------------- ");
log.warn("主题: {}" , getSubject(msg));
log.warn("发件人: {}" , getFrom(msg));
log.warn("收件人：{}" , getReceiveAddress(msg, null));
log.warn("发送时间：{}" , getSentDate(msg, null));
log.warn("是否已读：{}" , isSeen(msg));
log.warn("邮件优先级：{}" , getPriority(msg));
log.warn("是否需要回执：{}" , isReplySign(msg));
log.warn("邮件大小：{}" , msg.getSize() * 1024 + "kb");
boolean isContainerAttachment = isContainAttachment(msg);
log.warn("是否包含附件：{}" ,isContainerAttachment);
if (isContainerAttachment) {
saveAttachment(msg, "h:\\" + msg.getSubject() + "_" + i + "_"); //保存附件
}
StringBuffer content = new StringBuffer(30);
//解析邮件正文
getMailTextContent(msg, content);
log.warn("邮件正文：{}" , content);
log.info("------------------第" + msg.getMessageNumber() + "封邮件解析结束-------------------- ");
System.out.println();
}
}
/**
* 删除邮件
*
* @param messages 要删除邮件列表
*/
public static void deleteMessage(Message... messages) throws MessagingException, IOException {
if (messages == null || messages.length < 1)
throw new MessagingException("未找到要解析的邮件!");
// 解析所有邮件
for (int i = 0, count = messages.length; i < count; i++) {
/**
* 邮件删除
*/
Message message = messages[i];
String subject = message.getSubject();
// set the DELETE flag to true
message.setFlag(Flags.Flag.DELETED, true);
System.out.println("Marked DELETE for message: " + subject);
}
}
/**
* 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 part 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;
}
// /**
// * 判断邮件中是否包含附件
// *
// * @param part 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;
// log.info("有附件1");
// String filename = bodyPart.getFileName();
// if ((filename.toLowerCase().indexOf("gb") != -1)|| (filename.toLowerCase().indexOf("utf") != -1)){
// filename = getDecodeText(filename);
// }else{
// filename = new String(filename.getBytes("iso-8859-1"),"GBK");
// }
// log.info("附件名称1{}",filename);
// saveFile(bodyPart.getInputStream(),"H:/",filename);
//
// } else if (bodyPart.isMimeType("multipart/*")) {
//
// flag = isContainAttachment(bodyPart);
// log.info("继续1");
// } else {
//
// String contentType = bodyPart.getContentType();
//
// if (contentType.indexOf("application") != -1) {
//
// flag = true;
// log.info("有附件2");
// String filename = bodyPart.getFileName();
//
// if ((filename.toLowerCase().indexOf("gb") != -1)|| (filename.toLowerCase().indexOf("utf") != -1)){
// filename = getDecodeText(filename);
// }else{
// filename = new String(filename.getBytes("iso-8859-1"),"GBK");
// }
//
// log.info("附件名称2{}",filename);
// saveFile(bodyPart.getInputStream(),"H:\\",filename);
// }
//
// if (contentType.indexOf("name") != -1) {
// log.info("有附件3");
// String filename = bodyPart.getFileName();
//
// if (filename.toLowerCase().indexOf("GBK") != -1) {
// filename = MimeUtility.decodeText(filename);
// }
//
// log.info("附件名称3{}",filename);
// saveFile(bodyPart.getInputStream(),"H:\\",filename);
// flag = true;
// }
// }
//
// //if (flag) break;
// }
// } else if (part.isMimeType("message/rfc822")) {
// log.info("继续2");
// 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; 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 MessagingException, 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);
}
}
// public String[] saveAttachMent(Part part) throws Exception {
// String fileNames[] = null;
// if (part.isMimeType("multipart/*")) {
// Multipart mp = (Multipart) part.getContent();
// fileNames=new String[mp.getCount()];
// 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)))) {
// fileNames[i] = mpart.getFileName();
// if(fileNames[i]!=null ){
// if ((fileNames[i].toLowerCase().indexOf("gb") != -1)|| (fileNames[i].toLowerCase().indexOf("utf") != -1)){
// fileNames[i] = getDecodeText(fileNames[i]);
// }else{
// fileNames[i] = new String(fileNames[i].getBytes("iso-8859-1"),"GBK");
// }
// fileNames[i]=saveFile(fileNames[i], mpart.getInputStream());
// }
// } else if (mpart.isMimeType("multipart/*")) {
// saveAttachMent(mpart);
// } else {
// fileNames[i] = mpart.getFileName();
// if ((fileNames[i] != null)
// && (fileNames[i].toLowerCase().indexOf("GBK") != -1)) {
// fileNames[i] = MimeUtility.decodeText(fileNames[i]);
// fileNames[i]=saveFile(fileNames[i], mpart.getInputStream());
// }
// }
// }
// } else if (part.isMimeType("message/rfc822")) {
// saveAttachMent((Part) part.getContent());
// }
// return fileNames;
// }
public static String getDecodeText(String temp) {
try {
StringBuffer subject = new StringBuffer();
subject.append(temp);
Matcher m = subjectRepeatedStringPattern.matcher(subject);
while (m.find()) {
if (m.group(1).equals(m.group(3)))
subject.replace(m.start(2), m.end(2), "");
m.reset();
}
m = subjectStringPattern.matcher(subject);
int end = 0;
int end2 = 0;
if (m.matches()) {
while (m.find(end)) {
Matcher m2 = encodeStringPattern.matcher(m.group(1)
.replaceAll("\\s", ""));
while (m2.find())
if (m2.group(1).toLowerCase().indexOf("gb") > -1) {
if (m2.group(2).toLowerCase().equals("b"))
temp = new String(//CharBase64
Base64.decode(m2.group(3)), "GBK");
else
temp = MimeUtility.decodeText(m.group(1)
.replaceAll("\\s", ""));
} else if (m2.group(1).toLowerCase().indexOf("utf") > -1) {
temp = MimeUtility.decodeText(m.group(1)
.replaceAll("\\s", ""));
} else {
if (m2.group(1).toLowerCase().indexOf("x-unknown") > -1)
return getDecodeText(temp.replace("x-unknown",
"gbk"));
temp = MimeUtility.decodeText(m.group(1)
.replaceAll("\\s", ""));
}
subject.replace(m.start(1), m.end(1), temp);
if (m.start(1) > end) {
end2 = temp.length();
temp = new String(subject.substring(end, m.start(1))
.getBytes("iso-8859-1"), "GBK");
subject.replace(end, m.start(1), temp);
end += temp.length() + end2;
} else {
end += temp.length();
}
}
if (subject.length() > end)
subject.replace(end, subject.length(), new String(subject
.substring(end, subject.length()).getBytes(
"iso-8859-1"), "GBK"));
return subject.toString().replaceAll("\\t|\\n|\\x0B|\\f|\\r",
"");
}
return new String(temp.getBytes("iso-8859-1"), "GBK");
} catch (Exception e) {
e.printStackTrace();
}
return "";
}
}