下面是發送郵件SendMail.java（含附件）代碼：
//SendMail.java
import?javax.mail.*;
import?javax.mail.internet.*;
import?java.util.*;
import?javax.activation.*;
public?class?SendMail?
{
????
????public?static?void?send(String?customMailBoxAddress,String?username,String?password,String?serverMailBoxAddress,String?subject,String?attachmentPath,String?attachmentName)?{
????????//這里面使用新浪作為發送郵件的郵件服務器，其他的smtp服務器可以到相關網站上查到。
????????String?host?=?"smtp.sina.com.cn";
????????//發送方郵箱地址（如BlogJava2006@blog.com.cn.）
????????String?from?=?customMailBoxAddress;
????????//收件人郵箱地址
????????String?to?=?serverMailBoxAddress;
????????//發送者的郵箱用戶名
????????String?user?=?username;
????????//發送者的郵箱密碼
????????String?ps?=?password;
????????
????????Properties?props?=?new?Properties();
????????
????????//設置發送郵件的郵件服務器的屬性（這里使用新浪的smtp服務器）
????????props.put("mail.smtp.host",?host);
????????//需要經過授權，也就是有戶名和密碼的校驗，這樣才能通過驗證（一定要有//這一條）
????????props.put("mail.smtp.auth",?"true");
????????
????????//用剛剛設置好的props對象構建一個session
????????Session?session?=?Session.getDefaultInstance(props);
????????
????????//有了這句便可以在發送郵件的過程中在console處顯示過程信息，供調試使
????????//用（有的時候網絡連通性不夠好，發送郵件可能會有延遲，在這里面會有所//提示，所以最好是加上這句，避免盲目的等待）
????????session.setDebug(true);
????????
????????//定義消息對象
????????MimeMessage?message?=?new?MimeMessage(session);
????????try{
????????????message.setFrom(new?InternetAddress(from));
????????????message.addRecipient(Message.RecipientType.TO,new?InternetAddress(to));
????????????message.setSubject(subject);
????????????
????????????//?向multipart對象中添加郵件的各個部分內容，包括文本內容和附件
????????????Multipart?multipart?=?new?MimeMultipart();
????????????//設置郵件的文本內容
????????????BodyPart?contentPart?=?new?MimeBodyPart();
????????????contentPart.setText("郵件的具體內容在此");
????????????multipart.?addBodyPart(contentPart);
????????????//添加附件
????????????BodyPart?attachmentPart=?new?MimeBodyPart();
????????????DataSource?source?=?new?FileDataSource(attachmentPath);
????????????attachmentPart.setDataHandler(new?DataHandler(source));
????????????//注意：下面定義的enc對象用來處理中文附件名，否則名稱是中文的附//件在郵箱里面顯示的會是亂碼，
????????????sun.misc.BASE64Encoder?enc?=?new?sun.misc.BASE64Encoder();
????????????messageBodyPart.setFileName("=?GBK?B?"+enc.encode(attachmentName.getBytes())+"?=");
????????????multipart.addBodyPart(messageBodyPart);
????????????
????????????//將multipart對象放到message中
????????????message.setContent(multipart);
????????????//發送郵件
????????????message.saveChanges();
????????????Transport?transport?=?session.getTransport("smtp");
????????????transport.connect(host,?username,?password);
????????????transport.sendMessage(message,?message.getAllRecipients());
????????????transport.close();
????????}catch(Exception?e){
????????????e.printStackTrace();
????????}
????}
}import?javax.mail.*;
import?java.util.*;
import?java.io.*;
public?class?ReceiveMail?{
????//處理任何一種郵件都需要的方法
????private?void?handle(Message?msg)?throws?Exception?{
????????System.out.println("郵件主題:"?+?msg.getSubject());
????????System.out.println("郵件作者:"?+?msg.getFrom()[0].toString());
????????System.out.println("發送日期:"?+?msg.getSentDate());
????}
????//處理文本郵件
????private?void?handleText(Message?msg)?throws?Exception?{
????????this.handle(msg);
????????System.out.println("郵件內容:"+msg.getContent());
????}
????//處理Multipart郵件，包括了保存附件的功能
????private?static?void?handleMultipart(Message?msg)?throws?Exception?{
????????String?disposition;
????????BodyPart?part;
????????Multipart?mp?=?(Multipart)?msg.getContent();
????????//Miltipart的數量,用于除了多個part,比如多個附件
????????int?mpCount?=?mp.getCount();
????????for?(int?m?=?0;?m?<?mpCount;?m++)?{
????????????this.handle(msg);
????????????part?=?mp.getBodyPart(m);
????????????disposition?=?part.getDisposition();
????????????//判斷是否有附件
????????????if?(disposition?!=?null?&&?disposition.equals(Part.ATTACHMENT))
????????????{
????????????????//這個方法負責保存附件
????????????????saveAttach(part);
????????????}?else?{
????????????????//不是附件，就只顯示文本內容
????????????????System.out.println(part.getContent());
????????????}
????????}
????}
????private?static?void?saveAttach(BodyPart?part)?throws?Exception?{
????????//得到未經處理的附件名字
????????String?temp?=?part.getFileName();
????????//除去發送郵件時，對中文附件名編碼的頭和尾，得到正確的附件名
????????//（請參考發送郵件程序SendMail的附件名編碼部分）
????????String?s?=?temp.substring(8,?temp.indexOf("?="));
????????//文件名經過了base64編碼,下面是解碼
????????String?fileName?=?base64Decoder(s);
????????System.out.println("有附件:"?+?fileName);
????????InputStream?in?=?part.getInputStream();
????????FileOutputStream?writer?=?new?FileOutputStream(new?File(
????????????????"保存附件的本地路徑"+?"\\"+fileName));
????????byte[]?content?=?new?byte[255];
????????int?read?=?0;
????????while?((read?=?in.read(content))?!=?-1)?{
????????????writer.write(content);
????????}
????????writer.close();
????????in.close();
????}
????//base64解碼
????private?static?String?base64Decoder(String?s)?throws?Exception?{
????????sun.misc.BASE64Decoder?decoder?=?new?sun.misc.BASE64Decoder();
????????byte[]?b?=?decoder.decodeBuffer(s);
????????return?(new?String(b));
????}
????public?static?void?receive(String?receiverMailBoxAddress,?String?username,String?password)?{
????????//本人用的是yahoo郵箱，故接受郵件使用yahoo的pop3郵件服務器
????????String?host?=?"pop.mail.yahoo.com.cn";
????????try?{
????????????//連接到郵件服務器并獲得郵件
????????????Properties?prop?=?new?Properties();
????????????prop.put("mail.pop3.host",?host);
????????????Session?session?=?Session.getDefaultInstance(prop);
????????????Store?store?=?session.getStore("pop3");
????????????store.connect(host,?username,?password);
????????????Folder?inbox?=?store.getDefaultFolder().getFolder("INBOX");
????????????//設置inbox對象屬性為可讀寫，這樣可以控制在讀完郵件后直接刪除該附件
????????????inbox.open(Folder.READ_WRITE);
????????????Message[]?msg?=?inbox.getMessages();
????????????FetchProfile?profile?=?new?FetchProfile();
????????????profile.add(FetchProfile.Item.ENVELOPE);
????????????inbox.fetch(msg,?profile);
????????????for?(int?i?=?0;?i?<?msg.length;?i++)?{
????????????????//標記此郵件的flag標志對象的DELETED位為true,可以在讀完郵件后直接刪除該附件，具體執行時間是在調用
????????????????//inbox.close()方法的時候
????????????????msg[i].setFlag(Flags.Flag.DELETED,?true);
????????????????handleMultipart(msg[i]);
????????????????System.out.println("****************************");
????????????}
????????????if?(inbox?!=?null)?{
????????????????//參數為true表明閱讀完此郵件后將其刪除，更多的屬性請參考mail.jar的API
????????????????inbox.close(true);
????????????}
????????????if?(store?!=?null)?{
????????????????store.close();
????????????}
????????}?catch?(Exception?e)?{
????????????e.printStackTrace();
????????}
????}
}
posted on 2006-04-24 13:21
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