Java发送邮件

package email;import java.awt.BorderLayout;import java.awt.EventQueue;import java.awt.FlowLayout;import java.awt.GridLayout;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JOptionPane;import javax.swing.JPanel;import javax.swing.JTextArea;import javax.swing.JTextField;import javax.swing.UIManager;import javax.swing.border.EmptyBorder;import org.apache.commons.mail.EmailException;import org.apache.commons.mail.SimpleEmail;public class EmailSender extends JFrame {/** *  */private static final long serialVersionUID = -649057193496634534L;private JPanel contentPane;private JTextField hostTextField;private JTextField toEmailTextField;private JTextField fromEmailTextField;private JTextField usernameTextField;private JTextField passwordTextField;private JTextField titleTextField;private JTextArea contentTextArea;/** * Launch the application. */public static void main(String[] args) {try {UIManager.setLookAndFeel("com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel");} catch (Throwable e) {e.printStackTrace();}EventQueue.invokeLater(new Runnable() {public void run() {try {EmailSender frame = new EmailSender();frame.setVisible(true);} catch (Exception e) {e.printStackTrace();}}});}/** * Create the frame. */public EmailSender() {setTitle("\u90AE\u4EF6\u53D1\u9001\u5DE5\u5177");setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);setBounds(100, 100, 400, 400);contentPane = new JPanel();contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));setContentPane(contentPane);contentPane.setLayout(new GridLayout(2, 1, 5, 5));JPanel messagePanel = new JPanel();contentPane.add(messagePanel);messagePanel.setLayout(new GridLayout(5, 1, 5, 5));JPanel hostPanel = new JPanel();FlowLayout flowLayout = (FlowLayout) hostPanel.getLayout();flowLayout.setAlignment(FlowLayout.LEFT);messagePanel.add(hostPanel);JLabel hostLabel = new JLabel("\u670D\u52A1\u5668\u5730\u5740\uFF1A");hostPanel.add(hostLabel);hostTextField = new JTextField();hostPanel.add(hostTextField);hostTextField.setColumns(24);JPanel toEmailPanel = new JPanel();FlowLayout flowLayout_1 = (FlowLayout) toEmailPanel.getLayout();flowLayout_1.setAlignment(FlowLayout.LEFT);messagePanel.add(toEmailPanel);JLabel toEmailLabel = new JLabel("\u6536\u4EF6\u4EBA\u90AE\u7BB1\uFF1A");toEmailPanel.add(toEmailLabel);toEmailTextField = new JTextField();toEmailPanel.add(toEmailTextField);toEmailTextField.setColumns(24);JPanel fromEmailPanel = new JPanel();FlowLayout flowLayout_2 = (FlowLayout) fromEmailPanel.getLayout();flowLayout_2.setAlignment(FlowLayout.LEFT);messagePanel.add(fromEmailPanel);JLabel fromEmailLabel = new JLabel("\u53D1\u4EF6\u4EBA\u90AE\u7BB1\uFF1A");fromEmailPanel.add(fromEmailLabel);fromEmailTextField = new JTextField();fromEmailPanel.add(fromEmailTextField);fromEmailTextField.setColumns(24);JPanel authPanel = new JPanel();FlowLayout flowLayout_3 = (FlowLayout) authPanel.getLayout();flowLayout_3.setAlignment(FlowLayout.LEFT);messagePanel.add(authPanel);JLabel usernameLabel = new JLabel("\u7528\u6237\u540D\uFF1A");authPanel.add(usernameLabel);usernameTextField = new JTextField();authPanel.add(usernameTextField);usernameTextField.setColumns(10);JLabel passwordLabel = new JLabel("\u5BC6   \u7801\uFF1A");authPanel.add(passwordLabel);passwordTextField = new JTextField();authPanel.add(passwordTextField);passwordTextField.setColumns(10);JPanel titlePanel = new JPanel();FlowLayout flowLayout_4 = (FlowLayout) titlePanel.getLayout();flowLayout_4.setAlignment(FlowLayout.LEFT);messagePanel.add(titlePanel);JLabel titleLabel = new JLabel("\u90AE\u4EF6\u7684\u4E3B\u9898\uFF1A");titlePanel.add(titleLabel);titleTextField = new JTextField();titlePanel.add(titleTextField);titleTextField.setColumns(24);JPanel contentPanel = new JPanel();contentPane.add(contentPanel);contentPanel.setLayout(new BorderLayout(0, 0));JLabel contentLabel = new JLabel("\u5185\u5BB9\uFF1A");contentPanel.add(contentLabel, BorderLayout.WEST);JPanel buttonPanel = new JPanel();contentPanel.add(buttonPanel, BorderLayout.SOUTH);JButton button = new JButton("\u53D1\u9001\u90AE\u4EF6");button.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent arg0) {do_button_actionPerformed(arg0);}});buttonPanel.add(button);contentTextArea = new JTextArea();contentPanel.add(contentTextArea, BorderLayout.CENTER);}protected void do_button_actionPerformed(ActionEvent arg0) {String hostName = hostTextField.getText();String toEmail = toEmailTextField.getText();String fromEmail = fromEmailTextField.getText();String username = usernameTextField.getText();String password = passwordTextField.getText();String title = titleTextField.getText();String content = contentTextArea.getText();if (hostName.length() == 0) {JOptionPane.showMessageDialog(this, "请输入服务器地址", "", JOptionPane.WARNING_MESSAGE);}if (toEmail.length() == 0) {JOptionPane.showMessageDialog(this, "请输入收件人邮箱", "", JOptionPane.WARNING_MESSAGE);}if (fromEmail.length() == 0) {JOptionPane.showMessageDialog(this, "请输入发件人邮箱", "", JOptionPane.WARNING_MESSAGE);}if (username.length() == 0) {JOptionPane.showMessageDialog(this, "请输入用户名", "", JOptionPane.WARNING_MESSAGE);}if (password.length() == 0) {JOptionPane.showMessageDialog(this, "请输入密    码", "", JOptionPane.WARNING_MESSAGE);}if (title.length() == 0) {JOptionPane.showMessageDialog(this, "请输入主题", "", JOptionPane.WARNING_MESSAGE);}if (content.length() == 0) {JOptionPane.showMessageDialog(this, "请输入内容", "", JOptionPane.WARNING_MESSAGE);}SimpleEmail email = new SimpleEmail();email.setHostName(hostName);try {email.addTo(toEmail);email.setFrom(fromEmail);} catch (EmailException e) {e.printStackTrace();}email.setAuthentication(username, password);email.setSubject(title);try {email.setMsg(content);email.send();} catch (EmailException e) {e.printStackTrace();}}}

效果图：

发送之后，QQ邮箱会接收到一份提醒：

点击上图中的 开启相关服务  连接  开启 SMTP 服务 

再次发送邮件

就可以收到了

jar 包 下载：

http://download.csdn.net/detail/sir_jun/5591003