Java mail应用实例

最终成品度娘盘链接：https://pan.baidu.com/s/1HkjbrFCej7Q28fZOY10L0A
//带附件的邮件发送器，废话少说，直接上源码；本来有加载图片功能，但是不同分辨率的图片不好处理，预览的时候容易把界面挡住，所以就删掉了。WindowBuilder可运行。
//发送QQ邮箱邮件时附件文件名过长会导致乱码，在main函数中加上这句就行
System.setProperty("mail.mime.splitlongparameters","false"); 
原因是QQ邮箱会把名字分段重新编码，导致后缀名也被改了，变成一个.bin文件

public class APP {

	 private JFrame frame;
	 JTextField txtqqcom;
	 JTextField textField;
	 JTextField textField_2;
	 JTextField txtSmtpqqcom;
     TextArea textArea;
     JTextField textField_4;
     JTextField textField_5;
     JTextField textField_6;
     JTextField textField_7;
     JTextField textField_1;
	

	public static void main(String[] args) {
		System.setProperty("mail.mime.splitlongparameters", "false");
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					APP window = new APP();
					window.frame.setVisible(true);		      
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	public APP() {
		initialize();
	}

	
	public void initialize() {
		frame = new JFrame();
		frame.setTitle("\u7B80\u6613\u90AE\u4EF6\u53D1\u9001\u5668");
		frame.setBounds(100, 100, 881, 608);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.getContentPane().setLayout(null);
		frame.setResizable(false);
		
		
		textField_1 = new JTextField();
		textField_1.setBounds(92, 521, 520, 37);
		frame.getContentPane().add(textField_1);
		textField_1.setColumns(10);
		
		txtqqcom = new JTextField();
		txtqqcom.setText("@qq.com");
		txtqqcom.setCaretPosition(0);
		txtqqcom.setBounds(128, 11, 727, 30);
		frame.getContentPane().add(txtqqcom);
		txtqqcom.setColumns(10);
		
		JLabel lblNewLabel = new JLabel("\u53D1\u4EF6\u4EBA\u90AE\u7BB1:");
		lblNewLabel.setFont(new Font("宋体", Font.BOLD, 15));
		lblNewLabel.setBounds(29, 10, 89, 30);
		frame.getContentPane().add(lblNewLabel);
		
		JLabel label = new JLabel("\u53D1\u4EF6\u4EBA\u90AE\u7BB1\u5BC6\u7801:");
		label.setFont(new Font("宋体", Font.BOLD, 15));
		label.setBounds(29, 48, 132, 30);
		frame.getContentPane().add(label);
		
		textField = new JTextField();
		textField.setText("邮箱密码不是QQ密码,开启STMP邮箱服务后会有单独的密码");
		textField.setBounds(154, 51, 701, 27);
		frame.getContentPane().add(textField);
		textField.setColumns(10);
		
		JLabel label_1 = new JLabel("\u6536\u4EF6\u4EBA\u90AE\u7BB1:");
		label_1.setFont(new Font("宋体", Font.BOLD, 15));
		label_1.setBounds(29, 132, 112, 30);
		frame.getContentPane().add(label_1);
		
		textField_2 = new JTextField();
		textField_2.setBounds(128, 134, 727, 27);
		frame.getContentPane().add(textField_2);
		textField_2.setColumns(10);
		
		JLabel lblstmp = new JLabel("\u53D1\u4EF6\u4EBA\u90AE\u7BB1SMTP\u5730\u5740:");
		lblstmp.setForeground(Color.RED);
		lblstmp.setBackground(Color.RED);
		lblstmp.setFont(new Font("宋体", Font.BOLD, 15));
		lblstmp.setBounds(29, 90, 157, 32);
		frame.getContentPane().add(lblstmp);
		
		txtSmtpqqcom = new JTextField();
		txtSmtpqqcom.setText("smtp.qq.com");
		txtSmtpqqcom.setBounds(196, 88, 163, 29);
		frame.getContentPane().add(txtSmtpqqcom);
		txtSmtpqqcom.setColumns(10);
		
		textField_4 = new JTextField();
		textField_4.setText("465");
		textField_4.setBounds(447, 88, 147, 30);
		frame.getContentPane().add(textField_4);
		textField_4.setColumns(10);
		
		
		
		JButton button = new JButton("\u8BE6\u60C5");
		button.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				
				 JOptionPane.showMessageDialog(null, "QQ邮箱的SMTP服务器地址为:smtp.qq.com;网易163邮箱的SMTP服务器地址为:smtp.163.com;\nQQ邮箱的SMTP(SLL)端口为465或587,非 SSL连接的端口一般默认为 25,可以不添加;\n如果开启了SSL连接,QQ邮箱的SMTP(SLL)端口为465或587,其他邮箱自行去查看..."); 
				
			}
		});
		button.setFont(new Font("宋体", Font.PLAIN, 15));
		button.setBounds(614, 88, 89, 30);
		frame.getContentPane().add(button);
		
		TextArea textArea = new TextArea();
		textArea.setBounds(10, 224, 845, 291);
		frame.getContentPane().add(textArea);
		
		JLabel lblSmtp = new JLabel("SMTP\u7AEF\u53E3:");
		lblSmtp.setFont(new Font("宋体", Font.BOLD, 15));
		lblSmtp.setForeground(Color.RED);
		lblSmtp.setBounds(369, 88, 81, 26);
		frame.getContentPane().add(lblSmtp);
		
		JLabel label_2 = new JLabel("\u90AE\u4EF6\u4E3B\u9898:");
		label_2.setFont(new Font("宋体", Font.BOLD, 15));
		label_2.setBounds(39, 172, 76, 27);
		frame.getContentPane().add(label_2);
		
		textField_5 = new JTextField();
		textField_5.setBounds(128, 172, 165, 27);
		frame.getContentPane().add(textField_5);
		textField_5.setColumns(10);
		
		textField_7 = new JTextField();
		textField_7.setBounds(661, 171, 194, 25);
		frame.getContentPane().add(textField_7);
		textField_7.setColumns(10);
		
		JLabel label_3 = new JLabel("\u53D1\u4EF6\u4EBA\u6635\u79F0:");
		label_3.setFont(new Font("宋体", Font.BOLD, 15));
		label_3.setBounds(300, 171, 89, 28);
		frame.getContentPane().add(label_3);
		
		textField_6 = new JTextField();
		textField_6.setBounds(397, 171, 155, 28);
		frame.getContentPane().add(textField_6);
		textField_6.setColumns(10);
		
		JLabel label_4 = new JLabel("\u6536\u4EF6\u4EBA\u6635\u79F0:");
		label_4.setFont(new Font("宋体", Font.BOLD, 15));
		label_4.setBounds(562, 171, 89, 28);
		frame.getContentPane().add(label_4);
		
	
		Button button_2 = new Button("\u6DFB\u52A0\u9644\u4EF6");
		button_2.setFont(new Font("华文新魏", Font.BOLD, 15));
		button_2.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				
				
				 JFileChooser jfc=new JFileChooser();  
			        jfc.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES );  
			        jfc.showDialog(new JLabel(), "选择");  
			        File file=jfc.getSelectedFile();  
			        if(file.isDirectory()){  
			        	JOptionPane.showMessageDialog(null,"请选择文件！");  
			        }else if(file.isFile()){  
			        	JOptionPane.showMessageDialog(null,"选择成功！");  
			        	  String path=file.getPath();
					      textField_1.setText(path);
			        }  
			    
			}
		});
		button_2.setBounds(10, 521, 76, 37);
		frame.getContentPane().add(button_2);
			
			        
		Button button_1 = new Button("\u53D1\u9001");
		button_1.setBackground(Color.LIGHT_GRAY);
		button_1.addActionListener(
				new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				JOptionPane.showMessageDialog(null,"发送中，请稍后...");
				  String myEmailAccount = txtqqcom.getText().toString();
				   String myEmailPassword = textField.getText().toString();
				 	 String myEmailSMTPHost = txtSmtpqqcom.getText().toString();
				  String receiveMailAccount = textField_2.getText().toString();
				  String smtpPort = textField_4.getText().toString();

				   Properties props = new Properties();                 
			       props.setProperty("mail.transport.protocol", "smtp");  
			       props.setProperty("mail.smtp.host", myEmailSMTPHost);   
			       props.setProperty("mail.smtp.auth", "true");		    
			       props.setProperty("mail.smtp.port", smtpPort);
			       props.setProperty("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
			       props.setProperty("mail.smtp.socketFactory.fallback", "false");
			       props.setProperty("mail.smtp.socketFactory.port",smtpPort);		
			       Session session= Session.getInstance(props); 
					try {   
					     MimeMessage 	message = createMimeMessage(session, myEmailAccount, receiveMailAccount);
				        Transport transport = session.getTransport();
				        transport.connect(myEmailAccount, myEmailPassword);
				        transport.sendMessage(message, message.getAllRecipients());
				        transport.close();
				    	JOptionPane.showMessageDialog(null,"发送成功！");
					} catch (Exception e) {
						e.printStackTrace();
						JOptionPane.showMessageDialog(null,"发送失败！");
					}
				
			 }	
			MimeMessage createMimeMessage(Session session, String myEmailAccount, String receiveMailAccount) throws Exception {
			    MimeMessage message = new MimeMessage(session);
			    MimeBodyPart text = new MimeBodyPart();   
		        text.setContent(textArea.getText().toString(), "text/html;charset=UTF-8");
		        MimeBodyPart attachment = new MimeBodyPart();
				DataHandler dh2 = new DataHandler(new FileDataSource(textField_1.getText().toString()));
		        attachment.setDataHandler(dh2);                                           
		        attachment.setFileName(MimeUtility.encodeText(dh2.getName()));      
		        MimeMultipart mm = new MimeMultipart();
		        mm.addBodyPart(text);
		        mm.addBodyPart(attachment);    
		        mm.setSubType("mixed");   		        		        
			    message.setFrom(new InternetAddress(myEmailAccount, textField_6.getText().toString(), "UTF-8"));
			    message.setRecipient(MimeMessage.RecipientType.TO, new InternetAddress(receiveMailAccount,textField_7.getText().toString(),"UTF-8"));
			    message.setSubject(textField_5.getText().toString(), "UTF-8");
			    message.setContent( mm , "text/html;charset=UTF-8");
			    message.setSentDate(new Date());
			    message.saveChanges();
			    return message;
			} 
					  
		});
		button_1.setFont(new Font("Dialog", Font.BOLD, 15));
		button_1.setBounds(649, 521, 108, 48);
		frame.getContentPane().add(button_1);
		
		JButton btnNewButton = new JButton("\u53D1\u9001\u5931\u8D25?!");
		btnNewButton.setForeground(Color.RED);
		btnNewButton.setBackground(Color.LIGHT_GRAY);
		btnNewButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				 JOptionPane.showMessageDialog(null,"邮箱账号必须要开启SMTP服务，在浏览器网页登录邮箱后一般在邮箱的“设置--账户”中可以开启");
			}
		});
		btnNewButton.setFont(new Font("宋体", Font.PLAIN, 13));
		btnNewButton.setBounds(735, 88, 120, 30);
		frame.getContentPane().add(btnNewButton);
		
		JLabel label_5 = new JLabel("\u6B63\u6587\uFF1A");
		label_5.setBounds(10, 209, 54, 15);
		frame.getContentPane().add(label_5);
		
		JLabel lblNewLabel_1 = new JLabel("BY \u4FE1\u5B891701 \u8BB8\u4EAE");
		lblNewLabel_1.setBounds(763, 564, 112, 15);
		frame.getContentPane().add(lblNewLabel_1);


	
		} 
	}