messagedialog1.java

使用JavaMail开发的具有发送、接收邮件的应用

/*
 * MessageDialog.java
 *
 * Created on 2008年8月4日, 上午9:54
 */
package hjx.recvmail;

import java.awt.Dimension;
import java.awt.Toolkit;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintStream;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.mail.BodyPart;
import javax.mail.Multipart;
import javax.mail.Part;
import javax.swing.DefaultListModel;
import javax.swing.JFileChooser;
import javax.swing.event.HyperlinkEvent;
import javax.swing.event.HyperlinkListener;

/**
 *
 * @author  hujx
 */
public class MessageDialog1 extends javax.swing.JDialog {

    private StringBuffer bodyText = new StringBuffer(); //存放邮件内容的StringBuffer对象 
    private DefaultListModel listModel = new DefaultListModel();
    private String path = new File("mail/").getAbsolutePath() + "/";

    /** Creates new form MessageDialog */
    public MessageDialog1(java.awt.Frame parent, boolean modal) {
        super(parent, modal);
        initComponents();
        
        // Center the dialog at the center of screen
        int nWndWidth = getWidth();
        int nWndHeight = getHeight();

        Toolkit kit = Toolkit.getDefaultToolkit();
        Dimension dim = kit.getScreenSize();
        setBounds((dim.width - nWndWidth) / 2, (dim.height - nWndHeight) / 2,
                nWndWidth, nWndHeight);
    }

    public void showMessage(InMessage message) {
//        delAllFile("mail");
        try {
            txtSend.setText(message.send);
            txtRecv.setText(message.to);
            txtSentDate.setText(message.sentDate);
            txtSubject.setText(message.subject);
            if (message.html == null)
                txtContent.setText(message.contentText);
            else {
                String str = "file:" + message.html;
                txtContent.setEditable(false);
                txtContent.setContentType("text/html");
                txtContent.addHyperlinkListener(new HyperlinkListener() {
                    public void hyperlinkUpdate(HyperlinkEvent e) {
                        if (e.getEventType() == HyperlinkEvent.EventType.ACTIVATED) {
                            try {
                                txtContent.setPage(e.getURL());
                            } catch (IOException ex) {
                                ex.printStackTrace();
                            }
                        }
                    }
                });
                txtContent.setPage(str);
            }
            if (message.attaches != null)
                for (String fileName :  message.attaches)
                    listModel.addElement(fileName);
            
            this.setTitle(txtSubject.getText());
            if (listModel.isEmpty())
                jPanel2.setPreferredSize(new Dimension(0,0));
        } catch (Exception ex) {
            Logger.getLogger(MessageDialog1.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    /**
    　　*　解析邮件，把得到的邮件内容保存到一个StringBuffer对象中，解析邮件
    　　*　主要是根据MimeType类型的不同执行不同的操作，一步一步的解析
    　　*/
    public void getMailContent(Part part) throws Exception {
        String contentType = part.getContentType();
        //获得邮件的MimeType类型
        System.out.println("邮件的MimeType类型: " + contentType);

        int nameIndex = contentType.indexOf("name");

        boolean conName = false;

        if (nameIndex != -1) {
            conName = true;
        }

        if (part.isMimeType("text/plain") && conName == false) {
            // text/plain 类型
            bodyText.append((String) part.getContent());
            txtContent.setText(bodyText.toString());
        } else if (part.isMimeType("text/html") && conName == false) {
            // text/html 类型
//            bodyText.append((String) part.getContent());
            handleHtml(part);

        } else if (part.isMimeType("multipart/*")) {
            // multipart/*
            Multipart multipart = (Multipart) part.getContent();
            int counts = multipart.getCount();
            for (int i = 0; i < counts; i++) {
                getMailContent(multipart.getBodyPart(i));
            }
        } else if (part.isMimeType("message/rfc822")) {
            // message/rfc822
            getMailContent((Part) part.getContent());
        } else if (conName) {
            String disposition = part.getDisposition();
            if ((disposition != null) && (disposition.equals(Part.ATTACHMENT) || disposition.equals(Part.INLINE))) {
                saveAttach((BodyPart)part);
            }
        }
    }

    //处理Html文件
    public void handleHtml(Part msg) throws Exception {
        String content = (String) msg.getContent();
        String filename = "mail/" + (int) (Math.random() * 100 + 1) + ".html";
        try {
            FileOutputStream out = new FileOutputStream(filename);
            PrintStream p = new PrintStream(out);
            p.println(content);
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
        File file = new File(filename);
        String str = file.getAbsolutePath();
        str = "file:" + str;
        txtContent.setEditable(false);
        txtContent.setContentType("text/html");
        txtContent.addHyperlinkListener(new HyperlinkListener() {

            public void hyperlinkUpdate(HyperlinkEvent e) {
                if (e.getEventType() == HyperlinkEvent.EventType.ACTIVATED) {
                    try {
                        txtContent.setPage(e.getURL());
                    } catch (IOException ex) {
                        ex.printStackTrace();
                    }
                }
            }
        });
        txtContent.setPage(str);

    }

    private void saveAttach(BodyPart part) throws Exception {

        //文件名一般都经过了base64编码,下面是解码
//        String fileName = MimeUtility.decodeText(part.getFileName());
        String fileName = JavaMailFrame.decodeHeader(part.getFileName());
        System.out.println("有附件:" + fileName);

        InputStream in = part.getInputStream();
        FileOutputStream writer = new FileOutputStream(new File("mail/" + fileName));
        byte[] content = new byte[255];
        int read;
        while ((read = in.read(content)) != -1) {
            writer.write(content);
        }
        writer.close();
        in.close();
        
        listModel.addElement(fileName);
    }

    public static void delFolder(String folderPath) {
        try {
            delAllFile(folderPath); // 删除完里面所有内容

            java.io.File myFilePath = new java.io.File(folderPath);
            myFilePath.delete(); // 删除空文件夹

        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * 删除指定文件夹下所有文件
     * @param path: 文件夹完整绝对路径
     * @return
     */
    public static boolean delAllFile(String path) {
        boolean flag = false;
        File file = new File(path);
        if (!file.exists()) {
            return flag;
        }
        if (!file.isDirectory()) {
            return flag;
        }
        String[] tempList = file.list();
        File temp = null;
        int i, nCount = tempList.length;
        for (i = nCount - 1; i >= 0; i--) {
            if (path.endsWith(File.separator)) {
                temp = new File(path + tempList[i]);
            } else {
                temp = new File(path + File.separator + tempList[i]);
            }
            if (temp.isFile()) {