郵件發送和接收已經全部實現，大家在轉發市請注明出處(我這也是參考了N多大牛的作品)：
//發送郵件類：
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.Multipart;
import javax.mail.Session;
import javax.mail.Transport;
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;
public class SendMail {
public boolean Send(MailInfo mailInfo)throws Exception{
Properties props=new Properties();
//設置發送郵件的郵件服務器的屬性（這里使用網易的smtp服務器）
props.put("mail.smtp.host", mailInfo.getHost());
//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", mailInfo.getValidate());
Session session=Session.getDefaultInstance(props);// 用剛剛設置好的props對象構建一個session
session.setDebug(true);
MimeMessage message=new MimeMessage(session);
try{
message.setFrom(new InternetAddress(mailInfo.getFromAddress()));
message.addRecipient(Message.RecipientType.TO, new InternetAddress(mailInfo.getToAddress()));
message.setSubject(mailInfo.getSubject());
message.setSentDate(mailInfo.getSentdate());
//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();
BodyPart contentPart=new MimeBodyPart();
contentPart.setText(mailInfo.getContent());
multipart.addBodyPart(contentPart);
//添加附件
if(mailInfo.getFilepath()!=null){
BodyPart messageBodyPart=new MimeBodyPart();
DataSource source=new FileDataSource(mailInfo.getFilepath());
messageBodyPart.setDataHandler(new DataHandler(source));
sun.misc.BASE64Encoder enc=new sun.misc.BASE64Encoder();
String fname=mailInfo.getFilename();
if(fname!=null){
messageBodyPart.setFileName("=?GBK?B?"+enc.encode(fname.getBytes())+"?=");
// messageBodyPart.setFileName(MimeUtility.encodeText(fname));
multipart.addBodyPart(messageBodyPart);
}else{
String lname=mailInfo.getFilepath().substring(mailInfo.getFilepath().lastIndexOf("\\")+1, mailInfo.getFilepath().length());
System.out.println(lname);
messageBodyPart.setFileName("=?GBK?B?"+enc.encode(lname.getBytes())+"?=");
// messageBodyPart.setFileName(MimeUtility.encodeText(lname));
multipart.addBodyPart(messageBodyPart);
}
}
message.setContent(multipart);//text/plain表示純文本內容
message.saveChanges();
Transport transport=session.getTransport("smtp");
transport.connect(mailInfo.getHost(),mailInfo.getUsername(),mailInfo.getPassword());
transport.sendMessage(message,message.getAllRecipients());
transport.close();
return true;
}catch(Exception e){
e.printStackTrace();
}
return false;
}
}