Java可视化编程---SendMail工具的开发

介绍：

SendMail是一款简便的163邮箱发件工具

利用了163的SMTP接口来发送邮件

版本号：SendMail v1.0

在编写发送邮件工具之前，还需要安装 JavaMail API 和Java Activation Framework (JAF) 两个jar包

下载链接：https://files.cnblogs.com/files/wh4am1/mailAPI.zip

整体程序的逻辑构造如下

思路出来后，我们就利用eclipse IDE集成开发工具定制一个程序大概的框架

关于eclipse的可视化编程，可以使用windowbuilder插件:https://blog.****.net/jason0539/article/details/21219043

首先做出一个登陆窗口，是由一个账号编辑框、一个密码编辑框和按钮组成

import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import java.util.Properties;
import javax.mail.*;
import com.sun.mail.util.MailSSLSocketFactory;
import java.awt.Button;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.security.GeneralSecurityException;
import javax.swing.JLabel;

public class mailSend extends JFrame {

    /**
     *
     */
    private static final long serialVersionUID = 1L;
    private JPanel contentPane;
    private JTextField Username;
    private JPasswordField Password;
    private JLabel lblUsername;
    private JLabel lblPassword;
    private JLabel lblwham;

    /**
     * Launch the application.
     */
    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    mailSend frame = new mailSend();
                    frame.setVisible(true);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }

    class SimpleAuthenticator extends Authenticator {
        private String user;
        private String pwd;
        public SimpleAuthenticator(String user, String pwd) {
            this.user = user;
            this.pwd = pwd;
            }
        protected PasswordAuthentication getPasswordAuthentication() {
            return new PasswordAuthentication(user, pwd);
        }
    }

    /**
     * Create the frame.
     * @throws GeneralSecurityException
     * @throws NoSuchProviderException
     */
    public mailSend() throws Exception {
        Properties prop = new Properties();
        prop.setProperty("mail.host", "smtp.163.com");
        prop.setProperty("mail.transport.protocol","smtp");
        prop.setProperty("mail.smtp.auth","true");

        //开启SSL加密，不然会失败
        MailSSLSocketFactory sf = new MailSSLSocketFactory();
        sf.setTrustAllHosts(true);
        prop.put("mail.smtp.ssl.enable", "true");
        prop.put("mail.smtp.ssl.socketFactory", sf);

        setTitle("SendMila v1.0");
        setResizable(false);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setBounds(100, 100, 415, 300);
        contentPane = new JPanel();
        contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
        setContentPane(contentPane);
        contentPane.setLayout(null);

        Button button = new Button("\u767B\u5F55");
        button.addMouseListener(new MouseAdapter() {
            @Override
            public void mouseClicked(MouseEvent e) {
                try {
                    Session session = Session.getInstance(prop,new SimpleAuthenticator(Username.getText(),new String(Password.getPassword())));//测试邮件登陆
                    Transport ts = session.getTransport();
                    ts.connect();
                        EventQueue.invokeLater(new Runnable() {
                        public void run() {
                            try {
                                SendText frame = new SendText(session,Username.getText());
                                frame.setVisible(true);
                            } catch (Exception e) {
                                e.printStackTrace();
                            }
                        }
                    });
                }catch(AuthenticationFailedException e1) {
                    JOptionPane.showMessageDialog(null, "用户名或者密码错误！", "ERROR", JOptionPane.ERROR_MESSAGE);
                } catch (NoSuchProviderException e1) {
                    // TODO Auto-generated catch block
                    e1.printStackTrace();
                } catch (MessagingException e1) {
                    // TODO Auto-generated catch block
                    e1.printStackTrace();
                }

                //frame1.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

            }
        });
        button.setBounds(169, 156, 87, 25);
        contentPane.add(button);

        Username = new JTextField();
        Username.setBounds(131, 41, 212, 25);
        contentPane.add(Username);
        Username.setColumns(10);

        Password = new JPasswordField();
        Password.setBounds(131, 96, 212, 24);
        contentPane.add(Password);

        lblUsername = new JLabel("Username");
        lblUsername.setBounds(34, 44, 72, 18);
        contentPane.add(lblUsername);

        lblPassword = new JLabel("Password");
        lblPassword.setBounds(34, 99, 72, 18);
        contentPane.add(lblPassword);

        lblwham = new JLabel("\u4F5C\u8005:wh4am1 QQ:1976604307");
        lblwham.setBounds(232, 247, 198, 18);
        contentPane.add(lblwham);
    }
}

mailSend.java

源代码如上

其中，账号密码通过PasswordAuthentication类型返回

再传入session中去

再new一个Transpor对象来装入session

接下来就是链接SMTP来判断账号密码的正确

利用Transport对象的connect去链接

若验证失败，则会返回一个AuthenticationFailedException异常

这时候我们可以用try-catch来捕获这个异常

看完我们的代码就可以发现，我们在connect后面，还有一个新的对象建立

学过Jframe的人就知道，这是新建了一个窗口

而这个窗口类就是SendText

而新建的窗口，就是我们登陆成功后，编写邮件正文的窗口

代码如下

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.JTextArea;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JPopupMenu;
import java.awt.Component;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.JScrollPane;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.NoSuchProviderException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.JButton;

public class SendText extends JFrame {

    /**
     *
     */
    private static final long serialVersionUID = 1L;
    private JPanel contentPane;
    private JTextField textField;
    private Session session;
    private Transport ts;
    private String Forme;
    private JTextField textField_1;

    /**
     * Launch the application.
     */
//    public static void main(String[] args) {
//        EventQueue.invokeLater(new Runnable() {
//            public void run() {
//                try {
//                    SendText frame = new SendText();
//                    frame.setVisible(true);
//                } catch (Exception e) {
//                    e.printStackTrace();
//                }
//            }
//        });
//    }

    public static MimeMessage creatMail(Session session,String Forme,String toe,String title,String text) throws Exception {
        MimeMessage message = new MimeMessage(session);
        message.setFrom(new InternetAddress(Forme));
        message.setRecipient(Message.RecipientType.TO, new InternetAddress(toe));
        message.setSubject(title);
        message.setText(text);
        //message.setContent("<h1>Hello,World!</h1>","text/html");
        return message;
    }

    /**
     * Create the frame.
     * @throws NoSuchProviderException
     */
    public SendText(Session s,String forme) throws Exception {
        this.session = s;
        this.Forme = forme;
        this.ts = session.getTransport();

        addWindowListener(new WindowAdapter() {
            @Override
            public void windowClosed(WindowEvent e) {
                dispose();
            }
        });

        setTitle("SendText");
        setResizable(false);
        //setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setBounds(200, 300, 510, 450);
        contentPane = new JPanel();
        contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
        setContentPane(contentPane);
        contentPane.setLayout(null);

        JTextArea textArea = new JTextArea();
        textArea.setLineWrap(true);

        JPopupMenu popupMenu = new JPopupMenu();
        addPopup(textArea, popupMenu);

        JMenuItem mntmCopy = new JMenuItem("\u590D\u5236");
        mntmCopy.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                textArea.copy();
            }
        });
        popupMenu.add(mntmCopy);

        JMenuItem menuItem = new JMenuItem("\u7C98\u8D34");
        menuItem.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                textArea.paste();
            }
        });
        popupMenu.add(menuItem);

        JScrollPane scrollPane = new JScrollPane(textArea);
        scrollPane.setBounds(0, 13, 492, 227);
        contentPane.add(scrollPane);

        JLabel lblSendTo = new JLabel("Send to");
        lblSendTo.setBounds(83, 301, 72, 18);
        contentPane.add(lblSendTo);

        textField = new JTextField();
        textField.setBounds(159, 298, 198, 24);
        contentPane.add(textField);
        textField.setColumns(10);

        JPopupMenu popupMenu_1 = new JPopupMenu();
        addPopup(textField, popupMenu_1);

        JMenuItem menuItem_1 = new JMenuItem("\u590D\u5236");
        menuItem_1.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                textField.copy();
            }
        });
        popupMenu_1.add(menuItem_1);

        JMenuItem menuItem_2 = new JMenuItem("\u7C98\u8D34");
        menuItem_2.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                textField.paste();
            }
        });
        popupMenu_1.add(menuItem_2);

        JButton btnSend = new JButton("Send");
        btnSend.addMouseListener(new MouseAdapter() {
            @Override
            public void mouseClicked(MouseEvent e) {
                try {
                    ts.connect();
                    JOptionPane.showMessageDialog(null, "邮件已成功发送！", "Message", JOptionPane.INFORMATION_MESSAGE);
                    Message message = creatMail(session,Forme,textField.getText(),textField_1.getText(),textArea.getText());
                    ts.sendMessage(message, message.getAllRecipients());
                } catch (MessagingException e1) {
                    // TODO Auto-generated catch block
                    e1.printStackTrace();
                } catch (Exception e1) {
                    // TODO Auto-generated catch block
                    e1.printStackTrace();
                }
                try {
                    ts.close();
                } catch (MessagingException e1) {
                    // TODO Auto-generated catch block
                    e1.printStackTrace();
                }
            }
        });
        btnSend.setBounds(169, 351, 113, 27);
        contentPane.add(btnSend);

        JLabel lblMailTitle = new JLabel(" Mail title ");
        lblMailTitle.setBounds(61, 270, 96, 18);
        contentPane.add(lblMailTitle);

        textField_1 = new JTextField();
        textField_1.setColumns(10);
        textField_1.setBounds(159, 267, 198, 24);
        contentPane.add(textField_1);

        JPopupMenu popupMenu_2 = new JPopupMenu();
        addPopup(textField_1, popupMenu_2);

        JMenuItem menuItem_3 = new JMenuItem("\u590D\u5236");
        menuItem_3.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                textField_1.copy();
            }
        });
        popupMenu_2.add(menuItem_3);

        JMenuItem menuItem_4 = new JMenuItem("\u7C98\u8D34");
        menuItem_4.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                textField_1.paste();
            }
        });
        popupMenu_2.add(menuItem_4);
    }
    private static void addPopup(Component component, final JPopupMenu popup) {
        component.addMouseListener(new MouseAdapter() {
            public void mousePressed(MouseEvent e) {
                if (e.isPopupTrigger()) {
                    showMenu(e);
                }
            }
            public void mouseReleased(MouseEvent e) {
                if (e.isPopupTrigger()) {
                    showMenu(e);
                }
            }
            private void showMenu(MouseEvent e) {
                popup.show(e.getComponent(), e.getX(), e.getY());
            }
        });
    }
}

SendText.java

竟然前面的窗口我们能登陆成功，那么我们接下来要做的就是发送邮件

聪明的人就知道，我在创建窗口的时候传入了两个参数

这样做的好处就是不需要在这个窗口又建一遍session，而后面的String，是为了不让发件者再输入一遍自己的邮箱

万事俱备，我们就准备发件

跳过去看看

可以看到这又是一个链接，但这次链接不一样，后面建立了一个Message类，并调用了creatMail方法

转过去看之后发现，这时设置邮件正文和标题的方法

并最后用sendMessage方法发送邮件

下面就将整个工程打包jar

首先打开工程-〉鼠标右键选中Export

然后再选择

Next

至此，程序整体逻辑已完结。

下面附上测试效果。

如果邮件里面没有看到邮件，可以看看是不是SMTP协议没开，获知是在垃圾箱里。