javamail的总结，欢迎收藏！！

Question

public  class  Email_Autherticator  extends  Authenticator  
   {//此段代码用来进行服务器对用户的认证  
             public  Email_Autherticator()  
                 {  
                       super();  
                 }  
             public  PasswordAuthentication  getPasswordAuthentication()  
                 {  
                         return  new  PasswordAuthentication(username,password);  
                 }  
   }  
 
   void  jButton2_actionPerformed(ActionEvent  e)  {  
       try  
         {//该程序为接收邮件  
             Properties  props  =  System.getProperties();  //获取系统变量  
             Authenticator  auth  =  new  Email_Autherticator();      
             props.put("mail.smtp.host",host);  
             props.put("mail.smtp.auth","true");  
             Session  session  =  Session.getDefaultInstance(props,auth);  //建立session  
             Store  store  =  session.getStore("pop3");  
             store.connect(host,username,password);  
 
       //After  connecting  to  the  Store,you  can  get  a  Folder,which  must  be  opened  before  you  can  read  messages  from  it:  
             Folder  folder  =  store.getFolder("INBOX");//连接到Store后，取得一个文件夹，一般默认的是INDEX  
             folder.open(Folder.READ_WRITE);//READ_ONLY为打开方式  
             Message  message[]  =  folder.getMessages();//从文件夹获取邮件信息  
 
       //可以用两种方式去获得邮件信息，getContent()用来获得邮件的主体信息。而WriteTo()可以用来获得邮件的全部信息，包括头部信息  
       //      System.out.println(((MimeMessage)message).getContent());  
             for  (int  i=0,n=message.length;i<n;i++)  
                 {  
                         
                       String  out_from_person  =  ((InternetAddress)message[i].getFrom()[0]).getPersonal();  
                       String  out_from_address  =  ((InternetAddress)message[i].getFrom()[0]).getAddress();  
                       System.out.println("From:"+out_from_person+"\t");  
                       System.out.println("Address:"+out_from_address+"\t");  
 
                       String  out_subject  =  message[i].getSubject();  
                       System.out.println("Subject:"+out_subject+"\t");  
 
                       //以下代码用来获得邮件的正文信息  
                       Part  messagePart  =  message[i];  
                       Object  out_content  =  messagePart.getContent();  
                       if  (out_content  instanceof  Multipart)  
                           {  
                                 messagePart  =  ((Multipart)out_content).getBodyPart(0);  
                                 System.out.println("[  Multipart  Message  ]");  
                           }  
                       String  out_content_type  =  messagePart.getContentType();  
                       System.out.println("CONTENT:"+out_content_type);  
 
                       if  (out_content_type.startsWith("text/plain")    &brvbar;  &brvbar;  out_content_type.startsWith("text/html"))  
                           {  
                                   InputStream  ipstm  =  messagePart.getInputStream();  
                                   BufferedReader  bufreader  =  new  BufferedReader(new  InputStreamReader(ipstm));  
                                   String  thisLine  =  bufreader.readLine();  
                                   while  (thisLine  !=  null)  
                                       {  
                                               System.out.println("thisLine:  "+thisLine);  
                                               thisLine  =  bufreader.readLine();  
                                       }  
                           }  
                       System.out.println("------------------------------------------------------------");  
                       message[i].setFlag(Flags.Flag.DELETED,true);//最后删除服务器端的邮件  
                 }  
                           //DELETED,ANSWERED,DRAFT,FLAGGED,RECENT,SEEN,USER  
             folder.close(true);//true的话，彻底删除已经标记为DELETE的邮件，如果为false的话，就不删除  
             store.close();//关闭  
         }  
       catch(Exception  ej2)  
         {  
               System.out.println(ej2);  
         }  
   }  
 
   void  jButton4_actionPerformed(ActionEvent  e)  {  
       try  
         {//该程序为回复邮件  
             Properties  props  =  System.getProperties();  //获取系统变量  
             Authenticator  auth  =  new  Email_Autherticator();    //取得穃uFFFD衿魅现?  
             props.put("mail.smtp.host",host);  
             props.put("mail.smtp.auth","true");  
             Session  session  =  Session.getDefaultInstance(props,auth);  //建立session  
             Store  store  =  session.getStore("pop3");  
             store.connect(host,username,password);  
 
             Folder  folder  =  store.getFolder("INBOX");  
             folder.open(Folder.READ_WRITE);  
             Message  message[]  =  folder.getMessages();  
 
             for  (int  i=0,n=message.length;i<n;i++)  
                 {  
   //                String  out_from_person  =  ((InternetAddress)message[i].getFrom()[0]).getPersonal();//获取邮件发信人的署名  
     
                       String  out_from_address  =  ((InternetAddress)message[i].getFrom()[0]).getAddress();  
                       System.out.println(out_from_address);  
 
                       Message  forward  =  new  MimeMessage(session);  
                       forward.setSubject("Fwd:"+message[i].getSubject());  
                       forward.setFrom(new  InternetAddress(mail_to));  
                       forward.addRecipient(Message.RecipientType.TO,new  InternetAddress(out_from_address));  
 
                       BodyPart  messageBodyPart  =  new  MimeBodyPart();  
                       messageBodyPart.setText("Here  you  go  with  the  original  message:\n\n");  
 
                       Multipart  multipart  =  new  MimeMultipart();  
                       multipart.addBodyPart(messageBodyPart);  
 
                       messageBodyPart  =  new  MimeBodyPart();  
                       messageBodyPart.setDataHandler(message[i].getDataHandler());  
 
                       multipart.addBodyPart(messageBodyPart);  
                       forward.setContent(multipart);  
 
                       Transport.send(forward);  
                       message[i].setFlag(Flags.Flag.DELETED,true);//DELETED,ANSWERED,DRAFT,FLAGGED,RECENT,SEEN,USER  
                 }  
             folder.close(true);  
             store.close();//关闭  
         }  
       catch(Exception  ej2)  
         {  
               System.out.println(ej2);  
         }  
 
   }

Answer 1

void  jButton5_actionPerformed(ActionEvent  e)  {  
             try  
                 {//此段代码用来发送带有附件的邮件  
                       Properties  props  =  new  Properties();  
                       Authenticator  auth  =  new  Email_Autherticator();  
 
                       props.put("mail.smtp.host",host);  
                       props.put("mail.smtp.auth","true");  
                       Session  session  =  Session.getDefaultInstance(props,auth);  
                       MimeMessage  message  =  new  MimeMessage(session);  
                       message.setContent("Hello","text/plain");  
                       message.setSubject(mail_subject);  
                       message.setText(mail_body);  
                       message.setHeader(mail_head_name,mail_head_value);  
                       message.setSentDate(new  Date());  
                       message.setFrom(new  InternetAddress(mail_from,"sunxiaoming"));  //to  signal  man  
//原理：可以将邮件看成有多个部分组成的，如正文是一个部分，附件也是一个部分，所以用BodyPart来设置邮件的格式  
                       message.addRecipient(Message.RecipientType.TO,new  InternetAddress(mail_to));  
                       BodyPart  messageBodyPart  =  new  MimeBodyPart();  
                       messageBodyPart.setText("Pardon  Ideas");  
                       Multipart  multipart  =  new  MimeMultipart();  
                       multipart.addBodyPart(messageBodyPart);  
 
                       messageBodyPart  =  new  MimeBodyPart();  
                       DataSource  source  =  new  FileDataSource("./20020423/test.zip");//此处设置邮件的附件  
                       messageBodyPart.setDataHandler(new  DataHandler(source));  
                       messageBodyPart.setFileName("test.zip");  
                       multipart.addBodyPart(messageBodyPart);  
                       message.setContent(multipart);  
                       Transport.send(message);  
                       System.out.println("send  ok!");  
                 }  
             catch(Exception  ex)  
                 {  
                       System.out.println("faild"+ex);  
                 }  
 
   }  
 
   void  jButton6_actionPerformed(ActionEvent  e)  {  
       try  
         {//该程序为接受带有附件的邮件的代码  
             Properties  props  =  System.getProperties();    
             Authenticator  auth  =  new  Email_Autherticator();      
             props.put("mail.smtp.host",host);  
             props.put("mail.smtp.auth","true");  
             Session  session  =  Session.getDefaultInstance(props,auth);  //建立session  
             Store  store  =  session.getStore("pop3");  
             store.connect(host,username,password);  
 
       //After  connecting  to  the  Store,you  can  get  a  Folder,which  must  be  opened  before  you  can  read  messages  from  it:  
             Folder  folder  =  store.getFolder("INBOX");  
             folder.open(Folder.READ_WRITE);  
             Message  message[]  =  folder.getMessages();  
 
             for  (int  i=0,n=message.length;i<n;i++)//可能有多个邮件，所以用循环  
                 {  
                       //获得邮件的部分信息，如头部信息，送信人的署名，送信人的邮件地址  
                       String  out_from_person  =  ((InternetAddress)message[i].getFrom()[0]).getPersonal();  
                       String  out_from_address  =  ((InternetAddress)message[i].getFrom()[0]).getAddress();  
                       System.out.println("From:"+out_from_person+"\t");  
                       System.out.println("Address:"+out_from_address+"\t");  
                       String  out_subject  =  message[i].getSubject();  
                       System.out.println("Subject:"+out_subject+"\t");  
 
                       //以下代码用来获取邮件的主体信息  
                       Part  messagePart  =  message[i];  
                       Object  out_content  =  messagePart.getContent();  
                       if  (out_content  instanceof  Multipart)  
                           {  
                                 messagePart  =  ((Multipart)out_content).getBodyPart(0);  
                                 System.out.println("[  Multipart  Message  ]");  
                           }  
                       String  out_content_type  =  messagePart.getContentType();  
                       System.out.println("CONTENT:"+out_content_type);  
 
                       if  (out_content_type.startsWith("text/plain")    &brvbar;  &brvbar;  out_content_type.startsWith("text/html"))  
                           {  
                                   InputStream  ipstm  =  messagePart.getInputStream();  
                                   BufferedReader  bufreader  =  new  BufferedReader(new  InputStreamReader(ipstm));  
                                   String  thisLine  =  bufreader.readLine();  
                                   while  (thisLine  !=  null)  
                                       {  
                                               System.out.println("thisLine:  "+thisLine);  
                                               thisLine  =  bufreader.readLine();  
                                       }  
                           }  
                       //获取附件  
                       Multipart  mp  =  (Multipart)message[i].getContent();  
                       for  (int  j=0,m=mp.getCount();j<m;j++)  
                           {  
                                 System.out.println("***"+m+"***");  
                                 Part  part  =  mp.getBodyPart(j);  
                                 String  disposition  =  part.getDisposition();  
                                 if  ((disposition  !=  null)  &&  ((disposition.equals(part.ATTACHMENT))    &brvbar;  &brvbar;  (disposition.equals(part.INLINE))))  
                                     {  
 
                                     //以下代码将获得的附件保存到当前目录下，以part.getFileName()为文件名，也既是附件的名称。  
                                             File  filename  =  new  File(part.getFileName());  
                                             for  (int  k=0;filename.exists();k++)  
                                                 {  
                                                           filename  =  new  File(part.getFileName()+k);  
                                                 }  
                                             FileOutputStream  myFileoutputstream  =  new  FileOutputStream(filename);  
                                             int  chunk  =  part.getSize();//获得附件的大小，不一定很准确。  
 
                                             byte  []  buffer  =  new  byte[chunk];  
                                             InputStream  instream  =  part.getInputStream();  
                                             instream.read(buffer,0,chunk);  
                                             myFileoutputstream.write(buffer,0,chunk);  
                                             instream.close();  
                                             myFileoutputstream.close();  
                                     }  
                           }  
                       System.out.println("------------------------------------------------------------");  
                       message[i].setFlag(Flags.Flag.DELETED,true)；  
                 }  
             folder.close(true);  
             store.close();//关闭  
         }  
       catch(Exception  ej2)  
         {  
               System.out.println(ej2);  
         }  
   }  

Answer 2

void  jButton8_actionPerformed(ActionEvent  e)  {  
             try  
                 {//此段代码用来发送带有html信息的邮件  
                       Properties  props  =  new  Properties();  
                       Authenticator  auth  =  new  Email_Autherticator();  
                       props.put("mail.smtp.host",host);  
                       props.put("mail.smtp.auth","true");  
                       Session  session  =  Session.getDefaultInstance(props,auth);  
                       MimeMessage  message  =  new  MimeMessage(session);  
                   //设置邮件正文  
                       String  htmltext="<h1>hello</h1>"+"<a  href=\"http://www.sina.com.cn\"  target=\"_blank\">click  me  please!</a>";  
                       message.setContent(htmltext,"text/html");//text/plain设置邮件的格式因为是带有html文档的，所以用text/html格式  
 
                       message.setSubject(mail_subject);  
                 //      message.setText(mail_body);在使用message.setContent()时候，好象不能用message.setText()  
                       message.setHeader(mail_head_name,mail_head_value);  
                       message.setSentDate(new  Date());  
                       Address  address  =  new  InternetAddress(mail_from,"sunxiaoming");  
                       message.setFrom(address);    
                       Address  toAddress  =  new  InternetAddress(mail_to);  
                       message.addRecipient(Message.RecipientType.TO,toAddress);  
                       Transport.send(message);  
                       System.out.println("send  ok!");  
                 }  
             catch(Exception  ex)  
                 {  
                       System.out.println("faild"+ex);  
                 }  
 
   }  
 
   void  jButton9_actionPerformed(ActionEvent  e)  {  
             try  
                 {//此段代码用来发送带有图片的邮件  
                       String  file  =  "./20020423/test.gif";  
                       Properties  props  =  new  Properties();  
                       Authenticator  auth  =  new  Email_Autherticator();  
 
                       props.put("mail.smtp.host",host);  
                       props.put("mail.smtp.auth","true");  
                       Session  session  =  Session.getDefaultInstance(props,auth);  
                       MimeMessage  message  =  new  MimeMessage(session);  
 
                       message.setSubject("Embedded  Image");  
                       Address  address  =  new  InternetAddress(mail_from,"sunxiaoming");  
                       message.setFrom(address);    
                       Address  toAddress  =  new  InternetAddress(mail_to);  
                       message.addRecipient(Message.RecipientType.TO,toAddress);  
                       message.setHeader(mail_head_name,mail_head_value);  
                       message.setSentDate(new  Date());  
 
                       BodyPart  messageBodyPart  =  new  MimeBodyPart();  
                       String  htmlText  =  "<h1><hello></h1>"+"<img  src=\"cid:memememe\">";//加入图片  
                       messageBodyPart.setContent(htmlText,"text/html");  
                 //原理同发送附件一样，将邮件看成有多个部分组成的，先设置每一个部分，然后再全部将它们合起来即可。  
                       //Create  a  related  multi-part  to  combine  the  parts  
                       MimeMultipart  multipart  =  new  MimeMultipart("related");  
                       multipart.addBodyPart(messageBodyPart);  
 
                       //Create  part  for  the  image  
                       messageBodyPart  =  new  MimeBodyPart();  
 
                       //Fetch  the  image  and  associate  to  part  
                       DataSource  fds  =  new  FileDataSource(file);  
                       messageBodyPart.setDataHandler(new  DataHandler(fds));  
                       messageBodyPart.setHeader("Content-ID","memememe");  
 
                       //Add  part  to  multi-part  
                       multipart.addBodyPart(messageBodyPart);  
 
                       //Associate  multi-part  with  message  
                       message.setContent(multipart);  
 
                       Transport.send(message);  
                       System.out.println("send  ok!");  
                 }  
             catch(Exception  ex)  
                 {  
                       System.out.println("faild"+ex);  
                 }  
 
   }  

Answer 3

谢谢楼主和 Anubis(为朋友两肋插刀,为MM插朋友两刀!!) 
偶已经收藏了

Answer 4

   void  jButton7_actionPerformed(ActionEvent  e)  {  
       try  
         {//该程序用来接受带有html信息的邮件  
             Properties  props  =  System.getProperties();    
             Authenticator  auth  =  new  Email_Autherticator();  
             props.put("mail.smtp.host",host);  
             props.put("mail.smtp.auth","true");  
             Session  session  =  Session.getDefaultInstance(props,auth);  
             Store  store  =  session.getStore("pop3");  
             store.connect(host,username,password);  
 
       //After  connecting  to  the  Store,you  can  get  a  Folder,which  must  be  opened  before  you  can  read  messages  from  it:  
             Folder  folder  =  store.getFolder("INBOX");  
             folder.open(Folder.READ_WRITE);  
             Message  message[]  =  folder.getMessages();  
 
             for  (int  i=0,n=message.length;i<n;i++)  
//                  for  (int  i=0,n=1;i<n;i++)//only  one  letter  received  from  inbox  //for  debug  
                 {  
                       String  out_from_person  =  ((InternetAddress)message[i].getFrom()[0]).getPersonal();  
                       String  out_from_address  =  ((InternetAddress)message[i].getFrom()[0]).getAddress();  
                       System.out.println("From:"+out_from_person+"\t");  
                       System.out.println("Address:"+out_from_address+"\t");  
 
                       String  out_subject  =  message[i].getSubject();  
                       System.out.println("Subject:"+out_subject+"\t");  
 
                       //获取邮件的信息，并且对其每一部分进行操作  
                       Part  messagePart  =  message[i];  
                       Object  out_content  =  messagePart.getContent();  
                       if  (out_content  instanceof  Multipart)  
                           {  
                                 messagePart  =  ((Multipart)out_content).getBodyPart(0);  
                                 System.out.println("[  Multipart  Message  ]");  
                           }  
                       String  out_content_type  =  messagePart.getContentType();  
                       System.out.println("CONTENT:"+out_content_type);  
 
                       jEditorPane1.setText("");//将其显示在jEditorPanel上  
                       jEditorPane1.setContentType("text/html");  
                       jEditorPane1.setText((String)out_content);  
                       jEditorPane1.setEditable(false);  
 
/*  
                       if  (out_content_type.startsWith("text/plain")    &brvbar;  &brvbar;  out_content_type.startsWith("text/html"))  
                           {  
                                   InputStream  ipstm  =  messagePart.getInputStream();  
                                   BufferedReader  bufreader  =  new  BufferedReader(new  InputStreamReader(ipstm));  
                                   String  thisLine  =  bufreader.readLine();  
                                   while  (thisLine  !=  null)  
                                       {  
                                               System.out.println("thisLine:  "+thisLine);  
                                               thisLine  =  bufreader.readLine();  
                                       }  
                           }  
*/  
                       System.out.println("------------------------------------------------------------");  
                       message[i].setFlag(Flags.Flag.DELETED,true);  
                 }  
             folder.close(true);  
             store.close();  
         }  
       catch(Exception  ej2)  
         {  
               System.out.println(ej2);  
         }  
 
   }