email附件发送、多人发送、抄送

package email_;

import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.ByteArrayOutputStream; import java.io.File; import java.io.FileWriter; import java.io.IOException; import java.io.InputStreamReader; import java.io.Reader; import java.io.StringReader; import java.io.UnsupportedEncodingException; import java.util.Date; 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.NoSuchProviderException; 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; public class MailReceiver { //收邮件的参数配置 private MailReceiverInfo receiverInfo ; //与邮件服务器连接后得到的邮箱 private Store store; //收件箱 private Folder folder; //收件箱中的邮件信息 private Message[] messages; //当前正在处理的邮件信息 private Message currentMessage; private String currentEmailFileName; public MailReceiver(MailReceiverInfo receiverInfo){ this.receiverInfo = receiverInfo; } public void receiveAllMail()throws Exception{ if(this.receiverInfo == null){ throw new Exception("必须提供接收邮件的参数"); } //链接到服务器 if(this.connectToServer()){ // if(this.openInBoxFolder()){ //获取邮件 this.getAllMail(); this.closeConnection(); }else{ throw new Exception("收件箱打开失败"); } }else{ throw new Exception("邮箱链接失败"); } } //登录邮件服务器 private boolean connectToServer() { //判断是否需要身份认证 MyAuthenticator authenticator = null; if(this.receiverInfo.isValidate()){ //需要身份认证，创建一个密码验证器 authenticator= new MyAuthenticator( this.receiverInfo.getUserName(), this.receiverInfo.getPassword()); } //创建session Session session = Session.getInstance(this.receiverInfo.getProperties(),authenticator); //创建store,建立连接 try { this.store = session.getStore(this.receiverInfo.getProtocal()); } catch (NoSuchProviderException e) { // TODO Auto-generated catch block System.out.println("连接服务器失败"); return false; } System.out.println("连接中..."); try { this.store.connect(); } catch (MessagingException e) { System.out.println("连接服务器失败"); return false; } System.out.println("连接服务器成功"); return true; } //打开收件箱 private boolean openInBoxFolder() { try { this.folder = store.getFolder("INBOX"); //readonly folder.open(Folder.READ_ONLY); return true ; } catch (MessagingException e) { // TODO Auto-generated catch block System.out.println("打开收件箱失败"); } return false; } //断开与邮件服务器的链接 private boolean closeConnection() { try { if(this.folder.isOpen()){ this.folder.close(true); } this.store.close(); System.out.println("成功关闭与服务器的链接"); return true; } catch (MessagingException e) { System.out.println("关闭与服务器的链接出错"); } return false; } //获取所有邮件 private void getAllMail() throws MessagingException{ this.messages = this.folder.getMessages(); System.out.println("总的邮件数目："+messages.length); System.out.println("新邮件数目："+this.getNewMessageCount()); System.out.println("未读邮件数目："+this.getUnreadMessageCount()); //将要下载的邮件的数量。 int mailArrayLength = this.getMessageCount(); System.out.println("一共有邮件" + mailArrayLength + "封"); int errorCounter = 0; //邮件下载出错计数器 int successCounter = 0; for (int index = 0; index < mailArrayLength; index++) { try { this.currentMessage = (messages[index]); //设置当前message System.out.println("正在获取第" + index + "封邮件"); this.showMailBasicInfo(); getMail(); //获取当前message System.out.println("成功获取第" + index + "封邮件"); successCounter++; } catch (Throwable e) { errorCounter++; System.err.println("下载第" + index + "封邮件时出错"); } } System.out.println("------------------"); System.out.println("成功下载了" + successCounter + "封邮件"); System.out.println("失败下载了" + errorCounter + "封邮件"); System.out.println("------------------"); } private void showMailBasicInfo() throws Exception{ showMailBasicInfo(this.currentMessage); } private void showMailBasicInfo(Message message) throws Exception { System.out.println("-------- 邮件ID：" + this.getMessageId() + " ---------"); System.out.println("From：" + this.getFrom()); System.out.println("To：" + this.getTOAddress()); System.out.println("CC：" + this.getCCAddress()); System.out.println("BCC：" + this.getBCCAddress()); System.out.println("Subject：" + this.getSubject()); System.out.println("发送时间：：" + this.getSentDate()); System.out.println("是新邮件？" + this.isNew()); System.out.println("要求回执？" + this.getReplySign()); System.out.println("包含附件？" + this.isContainAttach()); System.out.println("------------------------------"); } private String getTOAddress() throws Exception { return getMailAddress("TO", this.currentMessage); } private String getCCAddress() throws Exception { return getMailAddress("CC", this.currentMessage); } private String getBCCAddress() throws Exception { return getMailAddress("BCC", this.currentMessage); } private String getMailAddress(String type, Message mimeMessage) 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++) { // 先获取邮件地址 String email = address[i].getAddress(); if (email == null){ email = ""; }else { email = MimeUtility.decodeText(email); } // 再取得个人描述信息 String personal = address[i].getPersonal(); if (personal == null){ personal = "";