java NIO推送实例

package com.message; import java.awt.BorderLayout; import java.awt.Color; import java.awt.Cursor; import java.awt.Dimension; import java.awt.FlowLayout; import java.awt.Font; import java.awt.Point; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.awt.event.MouseMotionAdapter; import java.net.URL; import java.text.SimpleDateFormat; import java.util.Date; import javax.swing.BorderFactory; import javax.swing.ImageIcon; import javax.swing.JButton; import javax.swing.JLabel; import javax.swing.JOptionPane; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JTextArea; import javax.swing.SwingConstants; import java.awt.Insets; import java.awt.Toolkit; import javax.swing.JDialog; /** * @author Administrator 此工具类用法：实例化出对象，调用 void show("标题","内容") 方法. InfoUtil tool * = new InfoUtil(); tool.show("标题","内容") */ public class InfoUtil { private Point oldP; // 上一次坐标,拖动窗口时用 private TipWindow tw = null; // 提示框 private ImageIcon img = null; // 图像组件 private JLabel imgLabel = null; // 背景图片标签 private JPanel headPan = null; private JPanel feaPan = null; private JPanel btnPan = null; private JLabel title = null; // 栏目名称 private JLabel head = null; // 蓝色标题 private JLabel close = null; // 关闭按钮 private JTextArea feature = null; // 内容 private JLabel releaseLabel = null; // 发布时间 private JButton sure = null; private String titleT = null; private String word = null; private String time = null; // private SimpleDateFormat sdf = new // SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); public void init() { // 新建300x220的消息提示框 tw = new TipWindow(300, 180); img = new ImageIcon("/images/tip-background.gif");//最好写相对路径 imgLabel = new JLabel(img); // 设置各个面板的布局以及面板中控件的边界 headPan = new JPanel(new FlowLayout(FlowLayout.CENTER, 0, 0)); feaPan = new JPanel(new FlowLayout(FlowLayout.CENTER, 0, 0)); btnPan = new JPanel(new FlowLayout(FlowLayout.CENTER, 0, 0)); title = new JLabel("欢迎使用本系统"); head = new JLabel(titleT); close = new JLabel("x"); feature = new JTextArea(word); // releaseLabel = new JLabel("发布于 " + time); sure = new JButton("确认"); sure.setHorizontalAlignment(SwingConstants.CENTER); // sure.setOpaque(true); // sure.setBackground(Color.ORANGE); // 将各个面板设置为透明，否则看不到背景图片 ((JPanel) tw.getContentPane()).setOpaque(false); headPan.setOpaque(false); feaPan.setOpaque(false); btnPan.setOpaque(false); // 设置JDialog的整个背景图片 tw.getLayeredPane().add(imgLabel, new Integer(Integer.MIN_VALUE)); imgLabel.setBounds(0, 0, img.getIconWidth(), img.getIconHeight()); headPan.setPreferredSize(new Dimension(300, 60)); // 设置提示框的边框,宽度和颜色 tw.setBackground(Color.LIGHT_GRAY); tw.getRootPane().setBorder( BorderFactory.createMatteBorder(1, 1, 1, 1, Color.gray)); title.setPreferredSize(new Dimension(260, 26)); title.setVerticalTextPosition(JLabel.CENTER); title.setHorizontalTextPosition(JLabel.CENTER); title.setFont(new Font("宋体", Font.PLAIN, 12)); title.setForeground(Color.black); close.setFont(new Font("Arial", Font.BOLD, 15)); close.setPreferredSize(new Dimension(20, 20)); close.setVerticalTextPosition(JLabel.CENTER); close.setHorizontalTextPosition(JLabel.CENTER); close.setCursor(new Cursor(12)); close.setToolTipText("关闭"); head.setPreferredSize(new Dimension(250, 35)); head.setVerticalTextPosition(JLabel.CENTER); head.setHorizontalTextPosition(JLabel.CENTER); head.setFont(new Font("宋体", Font.PLAIN, 14)); head.setForeground(Color.black); feature.setEditable(false); feature.setPreferredSize(new Dimension(260, 500)); feature.setForeground(Color.RED); feature.setFont(new Font("宋体", Font.PLAIN, 14)); feature.setBackground(Color.orange); // 设置文本域自动换行 feature.setLineWrap(true); // releaseLabel.setForeground(Color.DARK_GRAY); // releaseLabel.setFont(new Font("宋体", Font.PLAIN, 12)); sure.setPreferredSize(new Dimension(60, 30)); // 设置标签鼠标手形 sure.setCursor(new Cursor(12)); // headPan.add(title); headPan.add(head); headPan.add(close); feaPan.add(feature); // feaPan.add(releaseLabel); btnPan.add(sure); tw.add(headPan, BorderLayout.NORTH); tw.add(feaPan, BorderLayout.CENTER); tw.add(btnPan, BorderLayout.SOUTH); } public void handle() { // 为更新按钮增加相应的事件 sure.addMouseListener(new MouseAdapter() { public void mouseClicked(MouseEvent e) { // JOptionPane.showMessageDialog(tw, "谢谢，再见"); tw.close(); } public void mouseEntered(MouseEvent e) { sure.setBorder(BorderFactory.createLineBorder(Color.gray)); } public void mouseExited(MouseEvent e) { sure.setBorder(null); } }); // 增加鼠标拖动事件 title.addMouseMotionListener(new MouseMotionAdapter() { public void mouseDragged(MouseEvent e) { // TODO Auto-generated method stub Point newP = new Point(e.getXOnScreen(), e.getYOnScreen()); int x = tw.getX() + (newP.x - oldP.x); int y = tw.getY() + (newP.y - oldP.y); tw.setLocation(x, y); oldP = newP; } }); // 鼠标按下时初始坐标,供拖动时计算用 title.addMouseListener(new MouseAdapter() { public void mousePressed(MouseEvent e) { oldP = new Point(e.getXOnScreen(), e.getYOnScreen()); } }); // 右上角关闭按钮事件 close.addMouseListener(new MouseAdapter() { public void mouseClicked(MouseEvent e) { tw.close(); } public void mouseEntered(MouseEvent e) { close.setBorder(BorderFactory.createLineBorder(Color.gray)); } public void mouseExited(MouseEvent e) { close.setBorder(null); } }); } public void show(String titleT, String word) { this.titleT = titleT; this.word = word; // time = sdf.format(new Date()); init(); handle(); tw.setAlwaysOnTop(true); tw.setUndecorated(true); tw.setResizable(false); tw.setVisible(true); tw.run(); } public void close() { tw.close(); } } class TipWindow extends JDialog { private static final long serialVersionUID = 8541659783234673950L; private static Dimension dim; private int x, y; private int width, height; private static Insets screenInsets; public TipWindow(int width, int height) { this.width = width; this.height = height; dim = Toolkit.getDefaultToolkit().getScreenSize(); screenInsets = Toolkit.getDefaultToolkit().getScreenInsets( this.getGraphicsConfiguration()); x = (int) (dim.getWidth() - width - 3); y = (int) (dim.getHeight() - screenInsets.bottom - 3); initComponents(); } public void run() { for (int i = 0; i <= height; i += 10) { try { this.setLo