多媒体网络通信技术实验报告

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1、多媒体网络通信邮件接收与发送实 验 报 告 学 院：计算机与电子信息学院班级名称：学生姓名：空白小龙学 号：指导教师：时 间：2011年1月一、实验题目：编写一个邮件客户端和邮件接收端，能够接收和发送邮件。二、实验过程：本次实验通过使用JavaMail以及Java的图形化界面来完成邮件接收与发送的功能。JavaMail是提供给开发者处理电子邮件相关的编程接口，它是Sun发布的用来处理Email的API。它可以方便地执行一些常用的邮件传输。我们可以基于JavaMail开发出类似于Microsoft Outlook或者Foxmail的应用程序。虽然JavaMail是Sun的API之一，但它目前还没

2、有被加在标准的java开发工具包中（Java Development Kit），这就意味着你在使用前必须另外下载JavaMail文件。所以在此次实验中，我在项目中添加了activation.jar和mail.jar这两个jar包。JavaMail包中用于处理电子邮件的核心类是：Session,Message,Address,Authenticator,Transport,Store,Folder等。Session定义了一个基本的邮件会话，它需要从Properties中读取类似于邮件服务器，用户名和密码等信息。下面简要介绍下我的设计思路与实现过程并简单地注释下代码。我的项目构造如下图：主要设计思

3、想是登录验证发送邮件或者接收邮件，通过校验用户输入的邮箱账号和密码来进行验证，输入不正确的话就弹出提示框给出错误提示并可继续重新输入，如果正确的话就进入发送邮件的界面，此时默认的发件人就是用户输入的账号，与此同时把用户在登录模块输入的密码也存起来，作为以后发送邮件和接收邮件的密码。成功登录之后，即进入了发送邮件的界面中，发件人已经默认设置为用户登录时输入的账号了，其他的比如说：收件人、邮件主题、内容、附件均可由用户输入与选择，可支持多附件传输。发送邮件成功后会弹出对话框提示邮件已经成功发送。在发送邮件的界面上还有一个按钮是“收信”按钮，可切换到接收邮件界面。进入接收邮件界面后，就默认接收第一封

4、邮件了，在界面上分别显示了邮箱中一共有几封邮件；邮件的主题、发件人、发送邮件的时间、邮件内容、邮件附件(默认保存在C盘根目录中)；并可通过“上一封”和“下一封”来查看其他邮件；在界面上还有一个“写信”按钮，用于切换到发送邮件界面。大概的功能设计就是这样了。为了更好的体现面向对象的设计思想，我把邮件抽象成了一个Mail类(mail包)，在接收和发送邮件的工程中很好的使用到了这个类，Mail类(自定义的邮件类)主要包含了发送者邮箱用户名userName、发送者邮箱密码password、发送邮件服务器hostName、发送邮件服务器端口port、邮件接收者toAddress、邮件主题subject、

5、邮件内容content、邮件发送者fromAddress、附件路径列表fileList、附件保存路径attachPath、邮件发送时间time、邮件数量number这些成员变量，并添加了相应的set和get方法。另外Check类(check包)用于检测用户输入的邮箱账号和密码是否正确，正确则返回true，否则返回false。recive包中的ReciveMyMail类为接收邮件类；send包中的SendMyMail类为发送邮件类，而MyAuthenticator类继承了Authenticator类用于记录用户名和密码。gui包中包含三个图形化界面的类，分别为：Login类(邮件登录界面)、Se

6、adMail类(邮件发送界面)、ReciveMail类(邮件接收界面)。三、实验代码：mail包中的Mail.javapackage mail;(import略)/* * 自定义的邮件类 * * author 空白小龙 * version ,2010-10-28 */public class Mail / 发送者邮箱用户名public static String userName;/ 发送者邮箱密码public static String password;/ 发送邮件服务器private String hostName;/ 发送邮件服务器端口private int port;/ 邮件接收者p

7、rivate String toAddress;/ 邮件主题private String subject;/ 邮件内容private String content;/ 邮件发送者private String fromAddress;/ 附件路径列表private List fileList = new ArrayList();/ 附件保存路径private String attachPath;/ 邮件发送时间private String time;/ 邮件数量private int number;/ get方法和set方法略check包中的Check.javapackage check;(im

8、port略)/* * 检测邮箱账号和密码是否正确 * * author空白小龙 * version ,2010-10-28 */public class Check /* * 验证登录是否成功,成功返回true,否则返回false * * param mail * return true or false */public boolean MyCheck(Mail mail) try / 设置JavaMail属性Properties props = new Properties();/ 设置邮件服务器端口props.put(mail.smtp.port, mail.getPort();/ SM

9、TP邮件服务器IP地址或主机名props.put(mail.smtp.host, mail.getHostName();props.put(mail.smtp.auth, true);/ 需要经过授权，也就是有户名和密码的校验，这样才能通过验证（一定要有这一条）MyAuthenticator auth = new MyAuthenticator(mail.getUserName(), mail.getPassword();/ 根据已配置的JavaMail属性创建Session实例Session mailSession = Session.getInstance(props,(Authentic

10、ator) auth);/ 创建Transport对象Transport tran = mailSession.getTransport(smtp);/ 连接邮件服务器try tran.connect(mail.getHostName(), mail.getUserName(), mail.getPassword(); catch (javax.mail.AuthenticationFailedException e) return false;tran.close(); catch (AddressException e) catch (MessagingException e) retur

11、n true;recive包中的ReciveMyMail.javapackage recive;(import略)/* * 接收邮件类 * * author空白小龙 * version ,2010-10-28 */public class ReciveMyMail / Mail实例化对象static Mail mail;/ 附件路径列表static List fileList = new ArrayList();/ 构造方法public ReciveMyMail() / 重写构造方法SuppressWarnings(static-access)public ReciveMyMail(Mail

12、mail) this.mail = mail;/ 接收邮件的方法public Mail reveiveMail(int num) try Properties props = new Properties();Session session = Session.getDefaultInstance(props, null);Store store = session.getStore(pop3);store.connect(mail.getHostName(), mail.getUserName(), mail.getPassword();Folder folder = store.getFo

13、lder(INBOX);folder.open(Folder.READ_ONLY);Message message = folder.getMessages();mail.setNumber(message.length);if (message.length 0) fileList.clear();handleMultipart(messagenum); else return null;if (folder != null) folder.close(true);if (store != null) store.close(); catch (NoSuchProviderException

14、 e) e.printStackTrace(); catch (MessagingException e) e.printStackTrace(); catch (Exception e) e.printStackTrace();return mail;private void handleMultipart(Message msg) throws Exception handle(msg);String disposition;Multipart mp = (Multipart) msg.getContent();int mpCount = mp.getCount();for (int m

15、= 0; m mpCount; m+) BodyPart part = mp.getBodyPart(m);disposition = part.getDisposition();if (disposition != null & disposition.equals(Part.ATTACHMENT) saveAttach(part, mail.getAttachPath();/ 邮件附件mail.setFileList(fileList);/ 填充邮件SuppressWarnings(deprecation)private static void handle(Message msg) th

16、rows Exception / 邮件主题mail.setSubject(msg.getSubject();/ 邮件发件人mail.setToAddress(msg.getFrom()0.toString();/ 邮件发送时间mail.setTime(msg.getSentDate().toLocaleString();String contentStr = ;/ 获取信息对象Part messagePart = msg;Object content = messagePart.getContent();/ 附件if (content instanceof Multipart) message

17、Part = (Multipart) content).getBodyPart(0);/ 获取content类型String contentType = messagePart.getContentType();/ 如果邮件内容是纯文本或者是HTML，那么打印出信息if (contentType.startsWith(text/plain)| contentType.startsWith(text/html) InputStream is = messagePart.getInputStream();BufferedReader reader = new BufferedReader(new

18、InputStreamReader(is);String thisLine = reader.readLine();while (thisLine != null) contentStr = contentStr + thisLine;thisLine = reader.readLine();/ 邮件内容mail.setContent(contentStr);/ 保存附件private static void saveAttach(BodyPart part, String filePath)throws Exception String fileName = part.getFileName

19、();fileList.add(fileName);InputStream in = part.getInputStream();FileOutputStream writer = new FileOutputStream(new File(filePath + + fileName);byte content = new byte255;while (in.read(content) != -1) writer.write(content);writer.close();in.close();send包中的MyAuthenticator.javapackage send;(import略)/

20、* * Authenticator类的实现:记录用户名和密码 * * author 空白小龙 * version ,2010-10-28 */public class MyAuthenticator extends Authenticator / 发送邮箱的账号String userName;/ 发送邮箱的密码String userPass;/ 构造方法public MyAuthenticator() / 重写构造方法public MyAuthenticator(String userName, String userPass) this.userName = userName;this.us

21、erPass = userPass;/ 设置邮箱账号和密码protected PasswordAuthentication getPasswordAuthentication() return new PasswordAuthentication(userName, userPass);send包中的SendMyMail.javapackage send;(import略)/* * 发送邮件类 * * author 空白小龙 * version ,2010-10-28 */public class SendMyMail SuppressWarnings(static-access)/ 发送邮件

22、方法public void setMail(Mail mail) try / 设置JavaMail属性Properties props = new Properties();/ 设置邮件服务器端口props.put(mail.smtp.port, mail.getPort();/ SMTP邮件服务器IP地址或主机名props.put(mail.smtp.host, mail.getHostName();props.put(mail.smtp.auth, true);/ 需要经过授权，也就是有户名和密码的校验，这样才能通过验证（一定要有这一条）MyAuthenticator auth = new

23、 MyAuthenticator(mail.getUserName(), mail.getPassword();/ 根据已配置的JavaMail属性创建Session实例Session mailSession = Session.getInstance(props,(Authenticator) auth);/ 你可以在控制台（console)上看到发送邮件的过程mailSession.setDebug(false);MimeMessage msg = new MimeMessage(mailSession);InternetAddress address = InternetAddress.

24、parse(mail.getToAddress(), false);/ 设置邮件接收者msg.setRecipients(Message.RecipientType.TO, address);/ 设置邮件主题msg.setSubject(mail.getSubject();/ 设置邮件时间msg.setSentDate(new Date();/ 设置邮件发送者msg.setFrom(new InternetAddress(mail.getFromAddress();Multipart multipart = new MimeMultipart();/ 加入文本内容MimeBodyPart mi

25、meBodyPart = new MimeBodyPart();mimeBodyPart.setText(mail.getContent();multipart.addBodyPart(mimeBodyPart);List fileList = mail.getFileList();/ 加入附件for (String filePath : fileList) MimeBodyPart bodyPart = new MimeBodyPart();/ 得到数据源FileDataSource fileDataSource = new FileDataSource(filePath);bodyPart

26、.setDataHandler(new DataHandler(fileDataSource);bodyPart.setDisposition(Part.ATTACHMENT);/ 设置文件名bodyPart.setFileName(fileDataSource.getName();multipart.addBodyPart(bodyPart);msg.setContent(multipart);/ 创建Transport对象Transport tran = mailSession.getTransport(smtp);/ 连接邮件服务器tran.connect(mail.getHostNam

27、e(), mail.getUserName(), mail.getPassword();/ 发送邮件tran.send(msg);/ 关闭Transport对象tran.close(); catch (AddressException e) e.printStackTrace(); catch (MessagingException e) e.printStackTrace();gui包中的Login.javapackage gui;(import略)/* * 邮件登录界面 * * author 空白小龙 * version ,2010-10-28 */public class Login e

28、xtends Frame private static final long serialVersionUID = 1L;/ 密码输入框private JPasswordField jPasswordField = null;/ 账号输入框private TextField textField = null;/ 标签private Label label1 = null;/ 标签private Label label2 = null;/ 登录按钮private Button button = null;/ 退出按钮private Button quit = null;/* * 初始化密码输入框

29、 * */private JPasswordField getJPasswordField() if (jPasswordField = null) jPasswordField = new JPasswordField();jPasswordField.setBounds(new Rectangle(155, 91, 207, 36);jPasswordField.setFont(new Font(Dialog, Font.PLAIN, 18);jPasswordField.setText(070707);return jPasswordField;/* * 初始化账号输入框 * */pri

30、vate TextField getTextField() if (textField = null) textField = new TextField();textField.setBounds(new Rectangle(155, 45, 207, 36);textField.setFont(new Font(Dialog, Font.PLAIN, 23);textField.setText(dongshil);return textField;/* * 初始化登录按钮,并添加按钮动作 * */private Button getButton() if (button = null) b

31、utton = new Button();button.setBounds(new Rectangle(233, 141, 71, 36);button.setFont(new Font(Dialog, Font.PLAIN, 18);button.setLabel(登录);/ 添加登录按钮的事件处理button.addActionListener(new java.awt.event.ActionListener() public void actionPerformed(java.awt.event.ActionEvent e) / 获得用户输入的账号String usename = te

32、xtField.getText();/ 获得用户输入的密码String password = String.valueOf(jPasswordField.getPassword();/ 判断账号和密码是否正确boolean flag = false;Check c = new Check();Mail mail = new Mail();mail.setHostName();mail.setPort(25);mail.setUserName(usename);mail.setPassword(password);flag = c.MyCheck(mail);/ 账号和密码如果正确则跳转到邮件接

33、收界面,否则弹出一个对话框if (flag) Mail.userName = usename;Mail.password = password;Login.this.setVisible(false);SeadMail send = new SeadMail();send.setVisible(true); else JOptionPane.showMessageDialog(null, 邮箱或密码输入不正确,请重新输入。););return button;/* * 初始化退出按钮 * */private Button getQuit() if (quit = null) quit = new

34、 Button();quit.setBounds(new Rectangle(100, 141, 71, 36);quit.setFont(new Font(Dialog, Font.PLAIN, 18);quit.setLabel(退出);quit.addActionListener(new java.awt.event.ActionListener() public void actionPerformed(java.awt.event.ActionEvent e) System.exit(0););return quit;/* * main方法 * * param args */publ

35、ic static void main(String args) Login login = new Login();login.setVisible(true);/* * 构造方法 */public Login() super();initialize();/* * 初始化方法 * * return void */private void initialize() Dimension d;label2 = new Label();label2.setBounds(new Rectangle(24, 91, 120, 36);label2.setText(密码：);label2.setAlig

36、nment(Label.CENTER);label2.setFont(new Font(Dialog, Font.PLAIN, 18);label1 = new Label();label1.setBounds(new Rectangle(24, 45, 120, 36);label1.setText(邮箱：);label1.setAlignment(Label.CENTER);label1.setFont(new Font(Dialog, Font.PLAIN, 18);d = Toolkit.getDefaultToolkit().getScreenSize();this.setLocat

37、ion(d.width / 3, d.height / 3);this.setLayout(null);this.setSize(407, 209);this.setTitle(登录-空白小龙(0707100101)邮件接收与发送程序);this.add(getJPasswordField(), null);this.add(getTextField(), null);this.add(label1, null);this.add(label2, null);this.add(getButton(), null);this.add(getQuit(), null);this.addWindow

38、Listener(new java.awt.event.WindowAdapter() public void windowClosing(java.awt.event.WindowEvent e) System.exit(0););gui包中的ReciveMail.javapackage gui;(import略)/* * 邮件接收界面 * * author 空白小龙 * version ,2010-10-28 */public class ReciveMail extends Frame private static final long serialVersionUID = 1L;/ 标

39、签private Label label = null;/ 标签private Label subject = null;/ 标签private Label fromto = null;/ 标签private Label time = null;/ 标签private Label content = null;/ 标签private Label file = null;/ 标签private Label subjectContent = null;/ 标签private Label fromtoContent = null;/ 标签private Label timeContent = nul

40、l;/ 标签private Label fileContent = null;/ 标签private Label notice = null;/ 标签private Label count = null;/ 邮件内容显示框private TextArea textAreaContent = null;/ 写信按钮private Button button = null;/ 上一封邮件按钮private Button before = null;/ 下一封邮件按钮private Button after = null;static int length = 0;static int coun =

41、 0;/* * 构造方法 */public ReciveMail() super();initialize();recive();/ 自定义的接收邮件方法recive()public void recive() Mail mail = new Mail();mail.setHostName();mail.setUserName(Mail.userName);mail.setPassword(Mail.password);mail.setAttachPath(C:);ReciveMyMail receiver = new ReciveMyMail(mail);try mail = receive

42、r.reveiveMail(coun);length = mail.getNumber();count.setText(一共 + mail.getNumber() + 封邮件);subjectContent.setText(mail.getSubject();fromtoContent.setText(mail.getToAddress();timeContent.setText(mail.getTime();textAreaContent.setText(mail.getContent();String str = ;for (int i = 0; i (mail.getFileList()

43、.size(); i+) str = str + mail.getFileList().get(i) + ;fileContent.setText(str); catch (Exception e) e.printStackTrace();if (coun = 0) before.setEnabled(false); else before.setEnabled(true);if (coun = (length - 1) after.setEnabled(false); else after.setEnabled(true);/* * 初始化方法 * * return void */priva

44、te void initialize() Dimension d;count = new Label();count.setBounds(new Rectangle(357, 67, 97, 26);count.setText();count.setFont(new Font(Dialog, Font.PLAIN, 16);notice = new Label();notice.setBounds(new Rectangle(329, 300, 128, 24);notice.setText(附件已存入C盘根目录);fileContent = new Label();fileContent.s

45、etBounds(new Rectangle(110, 297, 212, 26);fileContent.setText();fileContent.setFont(new Font(Dialog, Font.PLAIN, 18);timeContent = new Label();timeContent.setBounds(new Rectangle(110, 155, 212, 26);timeContent.setText();timeContent.setFont(new Font(Dialog, Font.PLAIN, 18);fromtoContent = new Label()

46、;fromtoContent.setBounds(new Rectangle(110, 121, 212, 26);fromtoContent.setText();fromtoContent.setFont(new Font(Dialog, Font.PLAIN, 18);subjectContent = new Label();subjectContent.setBounds(new Rectangle(110, 90, 212, 26);subjectContent.setText();subjectContent.setFont(new Font(Dialog, Font.PLAIN,

47、18);file = new Label();file.setBounds(new Rectangle(28, 297, 66, 23);file.setText(附件：);file.setFont(new Font(Dialog, Font.PLAIN, 18);content = new Label();content.setBounds(new Rectangle(28, 190, 66, 23);content.setText(内容：);content.setFont(new Font(Dialog, Font.PLAIN, 18);time = new Label();time.se

48、tBounds(new Rectangle(29, 155, 66, 23);time.setText(时间：);time.setFont(new Font(Dialog, Font.PLAIN, 18);fromto = new Label();fromto.setBounds(new Rectangle(29, 121, 66, 23);fromto.setText(发件人：);fromto.setFont(new Font(Dialog, Font.PLAIN, 18);subject = new Label();subject.setBounds(new Rectangle(29, 9

49、0, 66, 23);subject.setText(主题：);subject.setFont(new Font(Dialog, Font.PLAIN, 18);label = new Label();label.setBounds(new Rectangle(87, 41, 256, 41);label.setAlignment(Label.CENTER);label.setFont(new Font(Dialog, Font.PLAIN, 18);label.setText(您好, + Mail.userName + ,欢迎您);d = Toolkit.getDefaultToolkit(

50、).getScreenSize();this.setLocation(d.width / 3, d.height / 5);this.setLayout(null);this.setSize(472, 339);this.setTitle(空白小龙(0707100101)邮件接收);this.add(label, null);this.add(subject, null);this.add(fromto, null);this.add(time, null);this.add(content, null);this.add(file, null);this.add(subjectContent

51、, null);this.add(fromtoContent, null);this.add(timeContent, null);this.add(getTextAreaContent(), null);this.add(fileContent, null);this.add(getButton(), null);this.add(notice, null);this.add(count, null);this.add(getBefore(), null);this.add(getAfter(), null);this.addWindowListener(new java.awt.event

52、.WindowAdapter() public void windowClosing(java.awt.event.WindowEvent e) System.exit(0););/* * 初始化邮件内容显示框 * */private TextArea getTextAreaContent() if (textAreaContent = null) textAreaContent = new TextArea();textAreaContent.setBounds(new Rectangle(110, 190, 328, 101);textAreaContent.setFont(new Fon

53、t(Dialog, Font.PLAIN, 18);textAreaContent.setEditable(false);return textAreaContent;/* * 初始化写信按钮 * */private Button getButton() if (button = null) button = new Button();button.setBounds(new Rectangle(370, 155, 68, 28);button.setLabel(写信);button.setFont(new Font(Dialog, Font.PLAIN, 18);/ 添加写信按钮的事件处理b

54、utton.addActionListener(new java.awt.event.ActionListener() public void actionPerformed(java.awt.event.ActionEvent e) ReciveMail.this.setVisible(false);SeadMail send = new SeadMail();send.setVisible(true););return button;/* * 初始化上一封邮件按钮 * */private Button getBefore() if (before = null) before = new Button();before.setBounds(new Rectangle(338, 106, 52, 30);before.setLabel(上一封);before.setFont(new Font(Dialog, Font.PLAIN, 16);/ 添加上一封按钮的事件处理before.addActionListener(new java.awt.event.ActionListener() public void actionPerformed(java.awt.event.ActionEven