java实现简单发送邮件功能

魁首哥

作者

本文实例为大家分享了java实现简单发送邮件的具体代码，供大家参考，具体内容如下

添加依赖

<dependency> <groupId>javax.mail</groupId> <artifactId>javax.mail-api</artifactId> <version>1.6.2</version> </dependency>  <dependency> <groupId>com.sun.mail</groupId> <artifactId>javax.mail</artifactId> <version>1.6.2</version> </dependency>

自定义异常类

public class EmailException extends Exception { public EmailException(String message) { super(message); } public EmailException() { super(); } /** * */ private static final long serialVersionUID = 115631651651651651L; }

IMAP协议读取邮件

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; import com.sun.mail.util.MailSSLSocketFactory; public class IMAPReceiveMail { private String user = "";//账号 private String password = "";//密码 private String HOST = ""; // smtp服务器 // private Properties props = null; private Folder folder = null;//收件箱 private Store store = null;//实例对象 // final String pop3 = "IMAP"; final String imap = "imap"; public IMAPReceiveMail(String user,String password) { this.password = password;//密码 this.user = user;//账户 } /** * @param message 邮件对象 * @param to 收件人 * @throws MessagingException * @throws IOException */ // public void forwardMail(Message message,String to) throws MessagingException, IOException { // Message forward = new MimeMessage(session); // forward.setSubject(message.getSubject()); // forward.setFrom(new InternetAddress(to)); // forward.setRecipient(Message.RecipientType.TO, new InternetAddress(to)); // forward.setSentDate(new Date()); // forward.setContent(message.getContent(), message.getContentType()); // // Transport smtp = session.getTransport("smtp"); // smtp.connect(HOST, user, password);//连接服务器的邮箱 // smtp.sendMessage(forward, forward.getAllRecipients()); // smtp.close(); // } /** * 接收邮件 */ public Folder resceive() throws Exception { /** * 因为现在使用的是163邮箱而163的 pop地址是 pop3.163.com 端口是 110 比如使用好未来企业邮箱就需要换成好未来邮箱的 * pop服务器地址 pop.263.net 和端口 110 */ String duankou = ""; // 端口号 String servicePath = ""; // 服务器地址 if(user==null||user.length()==0) throw new EmailException("账户不能为空！！！！"); if(password==null||password.length()==0) throw new EmailException("密码不能为空！！！！"); if(user.contains("@163")) { duankou = "143"; // 端口号 servicePath = "imap.163.com"; // 服务器地址 }else if(user.contains("@qq")) { duankou = "993"; // 端口号 servicePath = "imap.qq.com"; // 服务器地址 }else { throw new EmailException("不支持该协议"); } // 准备连接服务器的会话信息 Properties props = new Properties(); props.setProperty("mail.store.protocol", imap); // 使用pop3协议 props.setProperty("mail.imap.socketFactory.fallback", "false"); props.setProperty("mail.imap.port", duankou); // 端口 props.setProperty("mail.imap.socketFactory.port", duankou); // 端口 props.setProperty("mail.transport.protocol", "smtp");// 发送邮件协议名称 props.setProperty("mail.smtp.auth", "true"); //需要经过授权，也就是有户名和密码的校验，这样才能通过验证（一定要有这一条 props.setProperty("mail.host", HOST); //关闭读取附件时分批获取 BASE64 输入流的配置 props.setProperty("mail.imap.partialfetch", "false"); props.setProperty("mail.imaps.partialfetch", "false"); // props.setProperty("mail.pop3.host", servicePath); // pop3服务器 // final String SSL_FACTORY = "javax.net.ssl.SSLSocketFactory"; // Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider()); // props.setProperty("mail.imap.socketFactory.class", SSL_FACTORY); MailSSLSocketFactory sf = new MailSSLSocketFactory();//ssl加密 sf.setTrustAllHosts(true); props.put("mail.imap.ssl.enable", "true"); props.put("mail.imap.ssl.socketFactory", sf); // 创建Session实例对象 Session session = Session.getInstance(props); session.setDebug(false); store = session.getStore(imap); store.connect(servicePath,user,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 = 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); // 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(); return folder; } public void Colsefolder() throws MessagingException {//关闭资源 if(folder!=null) { folder.close(); } if(store!=null) { store.close(); } } /** * 解析邮件 * * @param messages 要解析的邮件列表 */ public 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]; System.out.println("------------------解析第" + msg.getMessageNumber() + "封邮件-------------------- "); System.out.println("主题: " + getSubject(msg)); System.out.println("发件人: " + getFrom(msg)); System.out.println("收件人：" + getReceiveAddress(msg, null)); System.out.println("发送时间：" + getSentDate(msg, null)); System.out.println("是否已读：" + isSeen(msg)); System.out.println("邮件优先级：" + getPriority(msg)); System.out.println("是否需要回执：" + isReplySign(msg)); System.out.println("邮件大小：" + msg.getSize() * 1024 + "kb"); boolean isContainerAttachment = isContainAttachment(msg); System.out.println("是否包含附件：" + isContainerAttachment); if (isContainerAttachment) { saveAttachment(msg, "f:\\mailTest\\" + msg.getSubject() + "_" + i + "_"); // 保存附件 } StringBuffer content = new StringBuffer(30); getMailTextContent(msg, content); System.out.println("邮件正文：" + (content.length() > 100 ? content.substring(0, 100) + "..." : content)); System.out.println("------------------第" + msg.getMessageNumber() + "封邮件解析结束-------------------- "); System.out.println(); } } /** * 解析邮件 * * @param messages 要解析的邮件列表 */ public 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 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 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; } public String getFromAddress(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]; from = 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 * * Message.RecipientType.TO 收件人 * * * Message.RecipientType.CC 抄送 * * * Message.RecipientType.BCC 密送 * * * @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 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 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 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 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 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 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 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 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 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(); } public void SetSEEN(MimeMessage message) throws MessagingException {//设置文件已读 message.setFlag(Flags.Flag.SEEN,true); } /** * 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 String decodeText(String encodeText) throws UnsupportedEncodingException { if (encodeText == null || "".equals(encodeText)) { return ""; } else { return MimeUtility.decodeText(encodeText); } } }

POP3协议接收邮件

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; import com.sun.mail.util.MailSSLSocketFactory; /** * 使用POP3协议接收邮件 */ public class POP3ReceiveMail { private String user = "";//账号 private String password = "";//密码 // private Properties props = null; private Folder folder = null;//收件箱 private Store store = null;//实例对象 final String pop3 = "pop3"; // final String imap = "imap"; public POP3ReceiveMail(String user,String password) { this.password = password;//密码 this.user = user;//账户 } /** * 接收邮件 */ public Folder resceive() throws Exception { /** * 因为现在使用的是163邮箱而163的 pop地址是 pop3.163.com 端口是 110 比如使用好未来企业邮箱就需要换成好未来邮箱的 * pop服务器地址 pop.263.net 和端口 110 */ String duankou = ""; // 端口号 String servicePath = ""; // 服务器地址 if(user==null||user.length()==0) throw new EmailException("账户不能为空！！！！"); if(password==null||password.length()==0) throw new EmailException("密码不能为空！！！！"); if(user.contains("@163")) { duankou = "110"; // 端口号 servicePath = "pop3.163.com"; // 服务器地址 }else if(user.contains("@qq")) { duankou = "995"; // 端口号 servicePath = "pop.qq.com"; // 服务器地址 }else { throw new EmailException("不支持该协议"); } // 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.transport.protocol", pop3); // 使用pop3协议 props.setProperty("mail.pop3.port", duankou); // 端口 props.setProperty("mail.pop3.host", servicePath); // pop3服务器 props.setProperty("mail.pop3.socketFactory.fallback", "true"); MailSSLSocketFactory sf = new MailSSLSocketFactory();//ssl加密 sf.setTrustAllHosts(true); props.put("mail.pop3.ssl.enable", "true"); props.put("mail.pop3.ssl.socketFactory", sf); // final String SSL_FACTORY = "javax.net.ssl.SSLSocketFactory"; // Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider()); // props.setProperty("mail.pop3.socketFactory.class", SSL_FACTORY); // 创建Session实例对象 Session session = Session.getInstance(props); store = session.getStore(pop3); store.connect(servicePath,user,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 = 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 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); // 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(); return folder; } public void Colsefolder() throws MessagingException {//关闭资源 if(folder!=null) { folder.close(); } if(store!=null) { store.close(); } } /** * 解析邮件 * * @param messages 要解析的邮件列表 */ public 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]; System.out.println("------------------解析第" + msg.getMessageNumber() + "封邮件-------------------- "); System.out.println("主题: " + getSubject(msg)); System.out.println("发件人: " + getFrom(msg)); System.out.println("收件人：" + getReceiveAddress(msg, null)); System.out.println("发送时间：" + getSentDate(msg, null)); System.out.println("是否已读：" + isSeen(msg)); System.out.println("邮件优先级：" + getPriority(msg)); System.out.println("是否需要回执：" + isReplySign(msg)); System.out.println("邮件大小：" + msg.getSize() * 1024 + "kb"); boolean isContainerAttachment = isContainAttachment(msg); System.out.println("是否包含附件：" + isContainerAttachment); if (isContainerAttachment) { saveAttachment(msg, "f:\\mailTest\\" + msg.getSubject() + "_" + i + "_"); // 保存附件 } StringBuffer content = new StringBuffer(30); getMailTextContent(msg, content); System.out.println("邮件正文：" + (content.length() > 100 ? content.substring(0, 100) + "..." : content)); System.out.println("------------------第" + msg.getMessageNumber() + "封邮件解析结束-------------------- "); System.out.println(); } } /** * 解析邮件 * * @param messages 要解析的邮件列表 */ public 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 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 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; } public String getFromAddress(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]; from = address.getAddress(); return from; } /** * 根据收件人类型，获取邮件收www.cppcns.com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 * * Message.RecipientType.TO 收件人 * * * Message.RecipientType.CC 抄送 * * * Message.RecipientType.BCC 密送 * * * @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 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) adhttp://www.cppcns.comdress; 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 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 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 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 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 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 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 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 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 String decodeText(String encodeText) throws UnsupportedEncodingException { if (encodeText == null || "".equals(encodeText)) { return ""; } else { return MimeUtility.decodeText(encodeText); } } }

发送邮件

import java.io.File; import java.io.IOException; import java.io.UnsupportedEncodingException; import java.security.GeneralSecurityException; import java.util.Date; import java.util.Properties; import java.util.UUID; import java.util.regex.Matcher; import java.util.regex.Pattern; import javax.activation.DataHandler; import javax.activation.FileDataSource; import javax.mail.BodyPart; import javax.mail.Message; import javax.mail.MessagingException; import javax.mail.Multipart; import javax.mail.Session; import javax.mail.Transport; import javax.mail.internet.AddressException; import javax.mail.internet.InternetAddress; import javax.mail.internet.MimeBodyPart; import javax.mail.internet.MimeMessage; import javax.mail.internet.MimeMultipart; import javax.mail.internet.MimeUtility; import com.sun.mail.util.MailSSLSocketFactory; /* * 发送邮件 */ public class SendMailUtil { private String HOST = ""; // smtp服务器 private String FROM = ""; // 发件人地址 // private String TO = ""; // 收件人地址 private String[] AFFIX = null; // 附件地址 // private String AFFIXNAME = ""; // 附件名称 private String USER = ""; // 用户名 private String PWD = ""; // 163的授权码 // private String SUBJECT = ""; // 邮件标题 private String[] TOS = null; private Properties props = null;// /** * @param USER 账户名 * @param PWD 密码 * @param FROM 发件人地址 * @throws EmailException * @throws GeneralSecurityException */ public SendMailUtil(String USER,String PWD,String FROM) throws EmailException, GeneralSecurityException { this.USER = USER;//账户 this.PWD = PWD;//密码 this.FROM = FROM;//发件人地址 stratProperties(); } private void stratProperties() throws EmailException, GeneralSecurityException { props = new Properties(); if(USER==null||USER.length()==0) { throw new EmailException("邮箱账号不能为空"); }else { if(USER.contains("@qq")) { HOST = "smtp.qq.com"; }else if(USER.contains("@163")) { HOST = "smtp.163.com"; }else if(USER.contains("@sina")) { HOST = "smtp.sina.com.cn"; }else { throw new EmailException("不支持该协议"); } // props.setProperty("mail.smtp.host", HOST);//设置发送邮件的邮件服务器的属性（这里使用网易的smtp服务器） // 设置邮件服务器主机名 props.setProperty("mail.host", HOST); } if(PWD==null||PWD.length()==0)throw new EmailException("邮箱密码不能为空"); props.setProperty("mail.transport.protocol", "smtp");// 发送邮件协议名称 props.setProperty("mail.smtp.auth", "true"); //需要经过授权，也就是有户名和密码的校验，这样才能通过验证（一定要有这一条） // props.put("mail.debug", "true");//设置debug模式后台输出邮件发送的过程 MailSSLSocketFactory sf = new MailSSLSocketFactory();//ssl加密 sf.setTrustAllHosts(true); props.put("mail.smtp.ssl.enable", "true"); props.put("mail.smtp.ssl.socketFactory", sf); } public void forwardMail(Message message) throws AddressException, MessagingException, EmailException, IOException { if(TOS.length==0)throw new EmailException("收件人不能为空"); Session session = Session.getInstance(props);//用props对象构建一个session // session.setDebug(true);//关闭控制台输出 MimeMessage newmessage = new MimeMessage(session);//用session为参数定义消息对象 newmessage.setSubject(message.getSubject()); newmessage.setFrom(new InternetAddress(FROM)); newmessage.setSentDate(new Date()); newmessage.setContent(message.getContent(), message.getContentType()); InternetAddress[] sendTo = new InternetAddress[TOS.length]; // 加载收件人地址 for (int i = 0; i < TOS.length; i++) { sendTo[i] = new InternetAddress(TOS[i]); } newmessage.addRecipients(Message.RecipientType.TO,sendTo); newmessage.addRecipients(MimeMessage.RecipientType.CC, InternetAddress.parse(FROM));//设置在发送给收信人之前给自己（发送方）抄送一份，不然会被当成垃圾邮件，报554错 Transport smtp = session.getTransport("smtp"); smtp.connect(HOST, USER, PWD); smtp.sendMessage(newmessage, newmessage.getAllRecipients()); smtp.close(); } /** * @param path 需要添加附件的文件路径 * @throws EmailException */ public void addFile(String...path) throws EmailException { if(path==null||path.length==0)throw new EmailException("附件路径不能为空"); this.AFFIX = path; } public void setTo(String...to) throws EmailException { if(toString().length()>0) { for(String t : to) { boolean emailFormat = emailFormat(t); if(!emailFormat) { throw new EmailException(t+"邮箱格式不正确"); } } TOS = to; }else { throw new EmailException("收件人不能为空"); } } /** ** 验证输入的邮箱格式是否符合 * @param email * @return 是否合法 */ private boolean emailFormat(String email) { boolean tag = true; final String pattern1 = "^([a-z0-9A-Z]+[-|\\.]?)+[a-z0-9A-Z]@([a-z0-9A-Z]+(-[a-z0-9A-Z]+)?\\.)+[a-zA-Z]{2,}$"; final Pattern pattern = Pattern.compile(pattern1); final Matcher mat = pattern.matcher(email); if (!mat.find()) { tag = false; } return tag; } /** * @param SUBJECT 标题 * @param context 文本信息 * @throws EmailException * @throws MessagingException * @throws AddressException * @throws GeneralSecurityException * @throws UnsupportedEncodingException */ public void send(String SUBJECT,String context) throws EmailException, AddressException, MessagingException, GeneralSecurityException, UnsupportedEncodingException { if(SUBJECT==null||SUBJECT.length()==0)SUBJECT=UUID.randomUUID().toString(); // this.SUBJECT = SUBJECT;//标题 if(TOS.length==0)throw new EmailException("收件人不能为空"); Session session = Session.getInstance(props);//用props对象构建一个session // session.setDebug(true);//关闭控制台输出 MimeMessage message = new MimeMessage(session);//用session为参数定义消息对象 message.setFrom(new InternetAddress(FROM));// 加载发件人地址 InternetAddress[] sendTo = new InternetAddress[TOS.length]; // 加载收件人地址 for (int i = 0; i < TOS.length; i++) { sendTo[i] = new InternetAddress(TOS[i]); } message.addRecipients(Message.RecipientType.TO,sendTo); message.addRecipients(MimeMessage.RecipientType.CC, InternetAddress.parse(FROM));//设置在发送给收信人之前给自己（发送方）抄送一份，不然会被当成垃圾邮件，报554错 message.setSubject(SUBJECT);//加载标题 Multipart multipart = new MimeMultipart();//向multipart对象中添加邮件的各个部分内容，包括文本内容和附件 BodyPart contentPart = new MimeBodyPart();//设置邮件的文本内容 contentPart.setText(context); multipart.addBodyPart(contentPart); if(AFFIX!=null&&AFFIX.length>0){//添加附件 for(int i = 0 ; i <AFFIX.length ; i++) { File file = new File(AFFIX[i]); if(file.exists()) { BodyPart messageBodyPart = new MimeBodyPart(); FileDataSource source = new FileDataSource(file); // String AFFIXNAME = file.getName(); // System.out.println(AFFIXNAME); messageBodyPart.setDataHandler(new DataHandler(source));//添加附件的内容 messageBodyPart.setFileName(MimeUtility.encodeWord(file.getName(), "GBK", null)); multipart.addBodyPart(messageBodyPart); }else { throw new EmailException("文件"+AFFIX[i]+"不存在"); } } } message.setContent(multipart);//将multipart对象放到message中 message.saveChanges(); //保存邮件 Transport transport = session.getTransport();//发送邮件 transport.connect(HOST, USER, PWD);//连接服务器的邮箱 transport.sendMessage(message, message.getAllRecipients());//把邮件发送出去 transport.close();//关闭连接 } }

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发布于 2022-04-22 18:33:50

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