mailreader.java~221~

Mail Of Java

/** 综合运用mail的各个东西，包括显示复合的附件和图片*/

package mailofjava;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;

import javax.mail.*;
import javax.mail.internet.*;
import javax.activation.*;

import java.io.*;
/** 本程序是JFrame，可以用上一个下一个翻看邮件。请和RemoteMailManagement合用，代码复用的*/

public class MailReader extends JFrame {
  private Stack attachementNameStack=new Stack();
  private Stack attachementLabelStack = new Stack();

  private BorderLayout borderLayout1 = new BorderLayout();
  private JPanel jp1=new JPanel(new BorderLayout());

  private JPanel jpup=new JPanel(new GridLayout(5,2));
  private JPanel jpdown=new JPanel(new BorderLayout());

  private JButton[] labelAttach=new JButton[20];


  private JPanel jp2=new JPanel(new FlowLayout());
  private JButton buttonExit= new JButton("退出");
  private JButton buttonAbout= new JButton("关于作者");
  private JButton buttonNext=new JButton("下一邮件");
  private JButton buttonPrevious=new JButton("上一邮件");

  private int totalMail;
  private int currentMail;
  private int attachCount;

  private JTextField textSubject=new JTextField("这里是mail subject");
  private JLabel labelSubject=new JLabel("邮件标题");

  private JTextField textFrom=new JTextField("这里是mail 来源");
  private JLabel labelFrom=new JLabel("发件人");

  private JTextField textTo=new JTextField("这里是mail 目的");
  private JLabel labelTo=new JLabel("收件人");

  private JTextField textDate=new JTextField("这里是mail 的日期");
  private JLabel labelDate=new JLabel("日期");

  private JEditorPane jta=new JEditorPane();
  private JScrollPane jsp;;
  private JScrollPane jsp_edit;
  private Message msg[];
  private String body;

 /** 构造。从服务器取得一堆的邮件，然后进行布局设定*/
  public MailReader() {
    try {

      jta.setSize(600,600);

      CreateMessage cm=new CreateMessage();
      msg=cm.getMessage() ;//取得邮件服务器消息
      this.totalMail = msg.length ;//总邮件数
      this.currentMail = 0; //第0封
      this.attachCount =0;//附件个数

      LayoutPrepare();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
/** main函数，直接new 一个JFrame */
  public static void main(String[] args) {
    MailReader mailReader = new MailReader();
    mailReader.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE );
    mailReader.setSize(1000,700);
    mailReader.setVisible(true);

    mailReader.show();

}

/** 准备进行布局设定和listener设定,之前先用setMailMessager取得邮件数据*/
  private void LayoutPrepare() throws Exception {
  try{
   this.setMailMessager(0) ;

  } catch(Exception e){System.err.println("err");};
/** 退出按钮*/
    buttonExit.addActionListener(
        new ActionListener(){
         public void actionPerformed (ActionEvent ae){
           System.exit(0);
         };
        }    );
     buttonAbout.addActionListener(
            new ActionListener(){
             public void actionPerformed (ActionEvent ae){
                  JOptionPane.showMessageDialog(null,"java高级教程mail篇 svc 曾海");
             };
      }    );
        buttonNext.addActionListener(
                  new ActionListener(){
                   public void actionPerformed (ActionEvent ae){
                  //下一个邮件
                     System.err.println("currentmail/total"+currentMail+"/"+totalMail);
                     if( (currentMail+1) < totalMail){
                       currentMail++;
                        setMailMessager(currentMail);
                        jp2.validate();
                     }
                     else
                      JOptionPane.showMessageDialog(null,"对不起，已经没得邮件也！");

                  };//func
        }    );

  buttonPrevious.addActionListener(
                  new ActionListener(){
                  public void actionPerformed (ActionEvent ae){
                       //上一个邮件
                      System.err.println("currentmail/total"+currentMail+"/"+totalMail);
                           if( (currentMail-1) >=0){
                              currentMail--;
                              setMailMessager(currentMail);
                              jp2.repaint() ;//强制
                              }
                               else
                            JOptionPane.showMessageDialog(null,"对不起，已经是头一个邮件！");

                            };//func
        }    );


// 最大是jp1:borderlayout
   //jpup: 是grid   --> jp1.north
   //jpdown: 是border-->jp1.center
    //jp2: flowlayout -->jp1.south
   jpup.add(labelSubject);
   jpup.add(textSubject);
   jpup.add(labelFrom);
   jpup.add(textFrom);
   jpup.add(labelTo);
   jpup.add(textTo);
   jpup.add(labelDate);
   jpup.add(textDate);

   jp1.add(jpup,BorderLayout.NORTH);//顶部的头

   jsp_edit=new JScrollPane(jta);
   //jsp_edit.setSize(500,400);
   jsp_edit.setHorizontalScrollBar(new JScrollBar(0));
   jsp_edit.setVerticalScrollBar(new JScrollBar(1));
   jsp_edit.setMaximumSize(new Dimension(600,400));
   jsp_edit.setMinimumSize(new Dimension(600,400));

   jp1.add(jsp_edit,BorderLayout.CENTER );

    jp1.setBackground(java.awt.Color.darkGray );
    jp2.setBackground(java.awt.Color.blue );

    jp2.add(buttonExit);
    jp2.add(buttonAbout);
    jp2.add(buttonNext);
    jp2.add(buttonPrevious);

    jp1.add(jp2,BorderLayout.SOUTH );

    this.setTitle("欢迎使用Mirthrandir的邮件阅读程序！");
    this.getContentPane().setLayout(borderLayout1) ;
    this.getContentPane().add(jp1,BorderLayout.NORTH );
}

/**核心程序，处理邮件内容和附件*/
  public void setMailMessager(int thisMail){
    //先清除上次的附件按钮
  jta.setContentType("text/plain");//default
    if(this.attachCount !=0){
   for(int i=0;i<attachCount;i++){
        jp2.remove(labelAttach[i]);
        labelAttach[i]=null;
      }//for
        jp2.repaint();
        jp2.validate();//key
    }
    attachCount=0;
   if(msg.length ==0){
       System.err.println("没有新邮件");
       System.exit(0);
    }

   try{
    textSubject.setText(  msg[thisMail].getSubject()) ;
    textDate.setText(msg[thisMail].getSentDate().toString()  );
    textFrom.setText(msg[thisMail].getFrom()[0].toString() ) ;//取第一个邮件地址
    textTo.setText(msg[thisMail].getRecipients(Message.RecipientType.TO)[0].toString()  ) ;

    Object obj = msg[thisMail].getContent() ;

   System.err.println("邮件总类型"+msg[thisMail].getContentType() );
   System.err.println("===========================================");
   if(msg[thisMail].isMimeType("multipart/*") ){//可能是mixed/alternative
     System.err.println("附件处理开始");
     Multipart mp= (Multipart) msg[thisMail].getContent() ;
     body="";
       for(int i=0;i<mp.getCount() ;i++){
         Part part= mp.getBodyPart(i) ;
         System.err.println("FirstLevel:第"+i+"分部类型" +part.getContentType());

          if(part.isMimeType("text/plain") )
             body=body+(String) part.getContent() ;
          else if(part.isMimeType("text/html") ){
              body=(String) part.getContent() ;
              jta.setContentType("text/plain");
          }//html则冲掉原来的，试验html里有 !doctype,meta就统统显示不出来，痛苦啊！
          else   if(part.isMimeType("multipart/alternative") )//20日修改       //part:取得第i部份的附件
          {
            System.err.println("开始输出alternative的内容");
            //其实它是由text/plain+ text/html构成
            Multipart mp1 =(Multipart )  part.getContent() ;
             for(int k=0;k<mp1.getCount() ;k++){
                 BodyPart bp1 = mp1.getBodyPart(k);//第k分部的
                 System.err.println("alternavtive:"+k+"****");
                //bp1.writeTo(System.err);
                System.err.println("********************************");
                 System.err.println("bp"+k+"类型"+ bp1.getContentType() );
                if( bp1.isMimeType("text/plain") )
                  body=body+  (String) (bp1.getContent()) ;
                if(bp1.isMimeType("text/html") )
                body+=(String) (bp1.getContent());
                 }//for
               System.err.println("alternative部份的内容是");
//              System.err.println(body);

            }
        /*是附件部份才会执行。*/
        String disposition= part.getDisposition() ;
        if(disposition!=null  &&
           (disposition.equals(Part.ATTACHMENT) || disposition.equals(Part.INLINE )))
        {
          System.err.println("       成功取出一个附件,正在处理。。");
          labelAttach[this.attachCount]= new JButton("本文的附件:"+part.getFileName() );
          labelAttach[this.attachCount].setForeground(java.awt.Color.yellow);
          labelAttach[this.attachCount].setBackground(java.awt.Color.blue);
          labelAttach[this.attachCount].setFont(new Font("宋体",Font.BOLD|Font.ITALIC,12 ));
          labelAttach[this.attachCount].addActionListener(
                    new ActionListener(){
                     public void actionPerformed (ActionEvent ae){
                              JOptionPane.showMessageDialog(null,"按了啊,可以存盘也！");
                              //saveThisAttachment();

                    };//func
          }    );
         String name= part.getFileName();
         this.attachementNameStack.push(name);//压入



         FileOutputStream fos=new FileOutputStream( name);//新建文件存在documentbase上
         BufferedInputStream in = new BufferedInputStream(part.getInputStream() );
         int c;
          while((c=in.read() )!=-1)//直接用writeto什么东西也没有
                     fos.write(c);
           in.close() ;
           fos.close() ;
           fos=null;

           Icon iic= new ImageIcon(name);//取文件
           JLabel jla=new JLabel(name,iic,SwingConstants.CENTER );
           this.attachementLabelStack.add(jla);//压入

//           jp2.add(labelAttach[this.attachCount]);
           jp2.repaint() ;
          jp2.validate() ;
          this.attachCount ++;

        };//if

 }//for


   }//如果是多部份的就。。multipart
   //这两个else 是对付单部份文件的
   else if   (msg[thisMail].isMimeType("text/plain") ){

     body=(String)(msg[thisMail].getContent() );
          jta.setContentType("text/html");

   }//else
   else   if   (msg[thisMail].isMimeType("text/html") ){
          body=(String)(msg[thisMail].getContent() );
          jta.setContentType("text/html");

   }//else


    jta.setText(body) ;

   }catch(Exception e){ e.printStackTrace() ;};
  this.showAttachedImages() ;//所有附件显示一下

  }//method


public void showAttachedImages(){
  while(!(attachementNameStack.isEmpty()) )
  {
    String name=(String )  this.attachementNameStack.pop();
    JLabel jla=(JLabel) this.attachementLabelStack.pop() ;
    jp2.add(jla);

  }//while
}

}//class