我使用swing在java中制作骰子滚动程序。我有4节课：
死
public class Die{
private int faceValue;
public Die(){
System.out.println("Creating new Dice Object");
setValue(roll());
}
public int roll() {
int val = (int) (6 * Math.random() + 1);
setValue(val);
return val;
}
public int getValue() {
return faceValue;
}
public void setValue(int spots) {
faceValue = spots;
}
}
DieFace
public class DieFace {
private int spotDiam,wOffset,hOffset,w,h;
public int faceValue;
public DieFace(){
Die die = new Die();
this.faceValue = die.getValue();
}
public void draw(Graphics g, int paneWidth, int paneHeight){
//draw information
}
}
DieFaceComponent
public class DieFaceComponent extends JComponent{
private static final long serialVersionUID = 1L;
DieFace face;
public DieFaceComponent(){
face = new DieFace();
System.out.println("DIEFACE" + face.faceValue);
repaint();
}
public void paintComponent(Graphics g){
revalidate();
face.draw(g,super.getWidth(),super.getHeight());
}
}
DieFaceViewer
public class DieFaceViewer{
static DieFaceComponent component;
static JFrame frame = new JFrame(); // Create a new JFrame object
public static void main(String[] args){
final int FRAME_WIDTH = 500;
final int FRAME_HEIGHT = 500;
frame.setSize(FRAME_WIDTH, FRAME_HEIGHT); // Set initial size
frame.setTitle("Dice Simulator Version 1.0"); // Set title
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // Set default close operation
component = new DieFaceComponent(); // Create a new DieFaceComponent object
frame.setLayout(new BorderLayout());
JButton btnRoll = new JButton("Roll!");
btnRoll.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
component = new DieFaceComponent();
}
});
frame.add(component, BorderLayout.CENTER); // Add DieFaceComponent object to frame
frame.add(btnRoll, BorderLayout.SOUTH);
frame.setVisible(true); // Set frame to visible
}
}
我的问题是，即使每次按下我的btnRoll时都会创建一个新的Die，DieFace和DieFaceComponent对象，用于绘制组件的值与初始实例保持一致。我做错了吗？提前致谢
答案 0 :(得分：2)
您在DieFaceComponent中创建了ActionListener的新实例，但对其执行了任何操作，它从未添加到任何内容中，因此它永远不可见。一个更好的解决方案可以让您触发对DieFaceComponent的更改，从而触发对DieFace的更改，该更改触发了对Die的更改并让整个事情只有repaint本身，例如......
public class Die {
private int faceValue;
public Die() {
System.out.println("Creating new Dice Object");
//setValue(roll());
roll(); // Roll sets the value any way :P
}
public int roll() {
int val = (int) (6 * Math.random() + 1);
setValue(val);
return val;
}
public int getValue() {
return faceValue;
}
public void setValue(int spots) {
faceValue = spots;
}
}
public class DieFace {
private int spotDiam, wOffset, hOffset, w, h;
//public int faceValue;
private Die die;
public DieFace() {
die = new Die();
//Die die = new Die();
// This is pointless, as you should simply as die for it's value
// when ever you need it...
//this.faceValue = die.getValue();
}
public void roll() {
die.roll();
}
public void draw(Graphics g, int paneWidth, int paneHeight) {
//draw information
}
}
public class DieFaceComponent extends JComponent {
private static final long serialVersionUID = 1L;
DieFace face;
public DieFaceComponent() {
face = new DieFace();
//System.out.println("DIEFACE" + face.faceValue);
// Pointless, as you've probably not actually been added to anything
// that could actuallyt paint you anyway...
//repaint();
}
public void roll() {
face.roll();
repaint();
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
//revalidate();
face.draw(g, super.getWidth(), super.getHeight());
}
}
现在，您可以在roll上拨打DieFaceComponent，roll会在DieFace上拨打roll，Die会在DieFaceComponent上拨打repaint，将更新实际值。然后import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class DiceRoller {
public static void main(String[] args) {
new DiceRoller();
}
public DiceRoller() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
}
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new DiePane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class DiePane extends JPanel {
public DiePane() {
setLayout(new BorderLayout());
DieFaceComponent component = new DieFaceComponent();
JButton roll = new JButton("Roll");
roll.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
component.roll();
}
});
add(component);
add(roll, BorderLayout.SOUTH);
}
@Override
public Dimension getPreferredSize() {
return new Dimension(200, 200);
}
}
}
会安排Die以确保它在屏幕上更新。
然后你可以使用类似......
的东西import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class DiceRoller {
public static void main(String[] args) {
new DiceRoller();
}
public DiceRoller() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
}
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new DiePane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class DiePane extends JPanel {
public DiePane() {
setLayout(new BorderLayout());
Die die = new Die();
DieFaceComponent component = new DieFaceComponent(die);
JButton roll = new JButton("Roll");
roll.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
die.roll();
}
});
add(component);
add(roll, BorderLayout.SOUTH);
}
@Override
public Dimension getPreferredSize() {
return new Dimension(200, 200);
}
protected void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2d = (Graphics2D) g.create();
g2d.dispose();
}
}
public class Die {
private PropertyChangeSupport propertyChangeSupport;
private int faceValue;
public Die() {
propertyChangeSupport = new PropertyChangeSupport(this);
System.out.println("Creating new Dice Object");
//setValue(roll());
roll(); // Roll sets the value any way :P
}
public int roll() {
int val = (int) (6 * Math.random() + 1);
setValue(val);
return val;
}
public int getValue() {
return faceValue;
}
public void setValue(int spots) {
int old = faceValue;
faceValue = spots;
propertyChangeSupport.firePropertyChange("value", old, faceValue);
}
public void addPropertyChangeListener(PropertyChangeListener listener) {
propertyChangeSupport.addPropertyChangeListener(listener);
}
public void removePropertyChangeListener(PropertyChangeListener listener) {
propertyChangeSupport.addPropertyChangeListener(listener);
}
}
public class DieFace {
private int spotDiam, wOffset, hOffset, w, h;
private Die die;
public DieFace(Die die) {
this.die = die
}
public void draw(Graphics g, int paneWidth, int paneHeight) {
//draw information
}
}
public class DieFaceComponent extends JComponent {
private static final long serialVersionUID = 1L;
private DieFace face;
public DieFaceComponent(Die die) {
face = new DieFace(die);
die.addPropertyChangeListener(new PropertyChangeListener() {
@Override
public void propertyChange(PropertyChangeEvent evt) {
repaint();
}
});
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
//revalidate();
face.draw(g, super.getWidth(), super.getHeight());
}
}
}
现在，更好的解决方案是将Die作为主要入口点，允许它向感兴趣的各方生成通知并让他们自己更新
也许像......
<div>
<?php
echo nl2br(file_get_contents(path_to_your_file));
?>
</div>
这是一个Observer Pattern的简单示例，其中 <staticContent lockAttributes="isDocFooterFileName">
<mimeMap fileExtension=".323" mimeType="text/h323" />
<mimeMap fileExtension=".3g2" mimeType="video/3gpp2" />
<mimeMap fileExtension=".3gp2" mimeType="video/3gpp2" />
<mimeMap fileExtension=".3gp" mimeType="video/3gpp" />
<mimeMap fileExtension=".3gpp" mimeType="video/3gpp" />
<mimeMap fileExtension=".aaf" mimeType="application/octet-stream" />
<mimeMap fileExtension=".aac" mimeType="audio/aac" />
<mimeMap fileExtension=".aca" mimeType="application/octet-stream" />
<mimeMap fileExtension=".accdb" mimeType="application/msaccess" />
<mimeMap fileExtension=".accde" mimeType="application/msaccess" />
<mimeMap fileExtension=".accdt" mimeType="application/msaccess" />
<mimeMap fileExtension=".acx" mimeType="application/internet-property-stream" />
<mimeMap fileExtension=".adt" mimeType="audio/vnd.dlna.adts" />
<mimeMap fileExtension=".adts" mimeType="audio/vnd.dlna.adts" />
<mimeMap fileExtension=".afm" mimeType="application/octet-stream" />
<mimeMap fileExtension=".ai" mimeType="application/postscript" />
<mimeMap fileExtension=".aif" mimeType="audio/x-aiff" />
<mimeMap fileExtension=".aifc" mimeType="audio/aiff" />
<mimeMap fileExtension=".aiff" mimeType="audio/aiff" />
<mimeMap fileExtension=".application" mimeType="application/x-ms-application" />
<mimeMap fileExtension=".art" mimeType="image/x-jg" />
<mimeMap fileExtension=".asd" mimeType="application/octet-stream" />
<mimeMap fileExtension=".asf" mimeType="video/x-ms-asf" />
<mimeMap fileExtension=".asi" mimeType="application/octet-stream" />
<mimeMap fileExtension=".asm" mimeType="text/plain" />
<mimeMap fileExtension=".asr" mimeType="video/x-ms-asf" />
<mimeMap fileExtension=".asx" mimeType="video/x-ms-asf" />
<mimeMap fileExtension=".atom" mimeType="application/atom+xml" />
<mimeMap fileExtension=".au" mimeType="audio/basic" />
<mimeMap fileExtension=".avi" mimeType="video/avi" />
<mimeMap fileExtension=".axs" mimeType="application/olescript" />
<mimeMap fileExtension=".bas" mimeType="text/plain" />
<mimeMap fileExtension=".bcpio" mimeType="application/x-bcpio" />
<mimeMap fileExtension=".bin" mimeType="application/octet-stream" />
<mimeMap fileExtension=".bmp" mimeType="image/bmp" />
<mimeMap fileExtension=".c" mimeType="text/plain" />
<mimeMap fileExtension=".cab" mimeType="application/vnd.ms-cab-compressed" />
<mimeMap fileExtension=".calx" mimeType="application/vnd.ms-office.calx" />
<mimeMap fileExtension=".cat" mimeType="application/vnd.ms-pki.seccat" />
<mimeMap fileExtension=".cdf" mimeType="application/x-cdf" />
<mimeMap fileExtension=".chm" mimeType="application/octet-stream" />
<mimeMap fileExtension=".class" mimeType="application/x-java-applet" />
<mimeMap fileExtension=".clp" mimeType="application/x-msclip" />
<mimeMap fileExtension=".cmx" mimeType="image/x-cmx" />
<mimeMap fileExtension=".cnf" mimeType="text/plain" />
<mimeMap fileExtension=".cod" mimeType="image/cis-cod" />
<mimeMap fileExtension=".cpio" mimeType="application/x-cpio" />
<mimeMap fileExtension=".cpp" mimeType="text/plain" />
<mimeMap fileExtension=".crd" mimeType="application/x-mscardfile" />
<mimeMap fileExtension=".crl" mimeType="application/pkix-crl" />
<mimeMap fileExtension=".crt" mimeType="application/x-x509-ca-cert" />
<mimeMap fileExtension=".csh" mimeType="application/x-csh" />
<mimeMap fileExtension=".css" mimeType="text/css" />
<mimeMap fileExtension=".csv" mimeType="application/octet-stream" />
<mimeMap fileExtension=".cur" mimeType="application/octet-stream" />
<mimeMap fileExtension=".dcr" mimeType="application/x-director" />
<mimeMap fileExtension=".deploy" mimeType="application/octet-stream" />
<mimeMap fileExtension=".der" mimeType="application/x-x509-ca-cert" />
<mimeMap fileExtension=".dib" mimeType="image/bmp" />
<mimeMap fileExtension=".dir" mimeType="application/x-director" />
<mimeMap fileExtension=".disco" mimeType="text/xml" />
<mimeMap fileExtension=".dll" mimeType="application/x-msdownload" />
<mimeMap fileExtension=".dll.config" mimeType="text/xml" />
<mimeMap fileExtension=".dlm" mimeType="text/dlm" />
<mimeMap fileExtension=".doc" mimeType="application/msword" />
<mimeMap fileExtension=".docm" mimeType="application/vnd.ms-word.document.macroEnabled.12" />
<mimeMap fileExtension=".docx" mimeType="application/vnd.openxmlformats-officedocument.wordprocessingml.document" />
<mimeMap fileExtension=".dot" mimeType="application/msword" />
<mimeMap fileExtension=".dotm" mimeType="application/vnd.ms-word.template.macroEnabled.12" />
<mimeMap fileExtension=".dotx" mimeType="application/vnd.openxmlformats-officedocument.wordprocessingml.template" />
<mimeMap fileExtension=".dsp" mimeType="application/octet-stream" />
<mimeMap fileExtension=".dtd" mimeType="text/xml" />
<mimeMap fileExtension=".dvi" mimeType="application/x-dvi" />
<mimeMap fileExtension=".dvr-ms" mimeType="video/x-ms-dvr" />
<mimeMap fileExtension=".dwf" mimeType="drawing/x-dwf" />
<mimeMap fileExtension=".dwp" mimeType="application/octet-stream" />
<mimeMap fileExtension=".dxr" mimeType="application/x-director" />
<mimeMap fileExtension=".eml" mimeType="message/rfc822" />
<mimeMap fileExtension=".emz" mimeType="application/octet-stream" />
<mimeMap fileExtension=".eot" mimeType="application/vnd.ms-fontobject" />
<mimeMap fileExtension=".eps" mimeType="application/postscript" />
<mimeMap fileExtension=".etx" mimeType="text/x-setext" />
<mimeMap fileExtension=".evy" mimeType="application/envoy" />
<mimeMap fileExtension=".exe" mimeType="application/octet-stream" />
<mimeMap fileExtension=".exe.config" mimeType="text/xml" />
<mimeMap fileExtension=".fdf" mimeType="application/vnd.fdf" />
<mimeMap fileExtension=".fif" mimeType="application/fractals" />
<mimeMap fileExtension=".fla" mimeType="application/octet-stream" />
<mimeMap fileExtension=".flr" mimeType="x-world/x-vrml" />
<mimeMap fileExtension=".flv" mimeType="video/x-flv" />
<mimeMap fileExtension=".gif" mimeType="image/gif" />
<mimeMap fileExtension=".gtar" mimeType="application/x-gtar" />
<mimeMap fileExtension=".gz" mimeType="application/x-gzip" />
<mimeMap fileExtension=".h" mimeType="text/plain" />
<mimeMap fileExtension=".hdf" mimeType="application/x-hdf" />
<mimeMap fileExtension=".hdml" mimeType="text/x-hdml" />
<mimeMap fileExtension=".hhc" mimeType="application/x-oleobject" />
<mimeMap fileExtension=".hhk" mimeType="application/octet-stream" />
<mimeMap fileExtension=".hhp" mimeType="application/octet-stream" />
<mimeMap fileExtension=".hlp" mimeType="application/winhlp" />
<mimeMap fileExtension=".hqx" mimeType="application/mac-binhex40" />
<mimeMap fileExtension=".hta" mimeType="application/hta" />
<mimeMap fileExtension=".htc" mimeType="text/x-component" />
<mimeMap fileExtension=".htm" mimeType="text/html" />
<mimeMap fileExtension=".html" mimeType="text/html" />
<mimeMap fileExtension=".htt" mimeType="text/webviewhtml" />
<mimeMap fileExtension=".hxt" mimeType="text/html" />
<mimeMap fileExtension=".ico" mimeType="image/x-icon" />
<mimeMap fileExtension=".ics" mimeType="text/calendar" />
<mimeMap fileExtension=".ief" mimeType="image/ief" />
<mimeMap fileExtension=".iii" mimeType="application/x-iphone" />
<mimeMap fileExtension=".inf" mimeType="application/octet-stream" />
<mimeMap fileExtension=".ins" mimeType="application/x-internet-signup" />
<mimeMap fileExtension=".isp" mimeType="application/x-internet-signup" />
<mimeMap fileExtension=".IVF" mimeType="video/x-ivf" />
<mimeMap fileExtension=".jar" mimeType="application/java-archive" />
<mimeMap fileExtension=".java" mimeType="application/octet-stream" />
<mimeMap fileExtension=".jck" mimeType="application/liquidmotion" />
<mimeMap fileExtension=".jcz" mimeType="application/liquidmotion" />
<mimeMap fileExtension=".jfif" mimeType="image/pjpeg" />
<mimeMap fileExtension=".jpb" mimeType="application/octet-stream" />
<mimeMap fileExtension=".jpe" mimeType="image/jpeg" />
<mimeMap fileExtension=".jpeg" mimeType="image/jpeg" />
<mimeMap fileExtension=".jpg" mimeType="image/jpeg" />
<mimeMap fileExtension=".js" mimeType="application/javascript" />
<mimeMap fileExtension=".json" mimeType="application/json" />
<mimeMap fileExtension=".jsx" mimeType="text/jscript" />
<mimeMap fileExtension=".latex" mimeType="application/x-latex" />
<mimeMap fileExtension=".lit" mimeType="application/x-ms-reader" />
<mimeMap fileExtension=".lpk" mimeType="application/octet-stream" />
<mimeMap fileExtension=".lsf" mimeType="video/x-la-asf" />
<mimeMap fileExtension=".lsx" mimeType="video/x-la-asf" />
<mimeMap fileExtension=".lzh" mimeType="application/octet-stream" />
<mimeMap fileExtension=".m13" mimeType="application/x-msmediaview" />
<mimeMap fileExtension=".m14" mimeType="application/x-msmediaview" />
<mimeMap fileExtension=".m1v" mimeType="video/mpeg" />
<mimeMap fileExtension=".m2ts" mimeType="video/vnd.dlna.mpeg-tts" />
<mimeMap fileExtension=".m3u" mimeType="audio/x-mpegurl" />
<mimeMap fileExtension=".m4a" mimeType="audio/mp4" />
<mimeMap fileExtension=".m4v" mimeType="video/mp4" />
<mimeMap fileExtension=".man" mimeType="application/x-troff-man" />
<mimeMap fileExtension=".manifest" mimeType="application/x-ms-manifest" />
<mimeMap fileExtension=".map" mimeType="text/plain" />
<mimeMap fileExtension=".mdb" mimeType="application/x-msaccess" />
<mimeMap fileExtension=".mdp" mimeType="application/octet-stream" />
<mimeMap fileExtension=".me" mimeType="application/x-troff-me" />
<mimeMap fileExtension=".mht" mimeType="message/rfc822" />
<mimeMap fileExtension=".mhtml" mimeType="message/rfc822" />
<mimeMap fileExtension=".mid" mimeType="audio/mid" />
<mimeMap fileExtension=".midi" mimeType="audio/mid" />
<mimeMap fileExtension=".mix" mimeType="application/octet-stream" />
<mimeMap fileExtension=".mmf" mimeType="application/x-smaf" />
<mimeMap fileExtension=".mno" mimeType="text/xml" />
<mimeMap fileExtension=".mny" mimeType="application/x-msmoney" />
<mimeMap fileExtension=".mov" mimeType="video/quicktime" />
<mimeMap fileExtension=".movie" mimeType="video/x-sgi-movie" />
<mimeMap fileExtension=".mp2" mimeType="video/mpeg" />
<mimeMap fileExtension=".mp3" mimeType="audio/mpeg" />
<mimeMap fileExtension=".mp4" mimeType="video/mp4" />
<mimeMap fileExtension=".mp4v" mimeType="video/mp4" />
<mimeMap fileExtension=".mpa" mimeType="video/mpeg" />
<mimeMap fileExtension=".mpe" mimeType="video/mpeg" />
<mimeMap fileExtension=".mpeg" mimeType="video/mpeg" />
<mimeMap fileExtension=".mpg" mimeType="video/mpeg" />
<mimeMap fileExtension=".mpp" mimeType="application/vnd.ms-project" />
<mimeMap fileExtension=".mpv2" mimeType="video/mpeg" />
<mimeMap fileExtension=".ms" mimeType="application/x-troff-ms" />
<mimeMap fileExtension=".msi" mimeType="application/octet-stream" />
<mimeMap fileExtension=".mso" mimeType="application/octet-stream" />
<mimeMap fileExtension=".mvb" mimeType="application/x-msmediaview" />
<mimeMap fileExtension=".mvc" mimeType="application/x-miva-compiled" />
<mimeMap fileExtension=".nc" mimeType="application/x-netcdf" />
<mimeMap fileExtension=".nsc" mimeType="video/x-ms-asf" />
<mimeMap fileExtension=".nws" mimeType="message/rfc822" />
<mimeMap fileExtension=".ocx" mimeType="application/octet-stream" />
<mimeMap fileExtension=".oda" mimeType="application/oda" />
<mimeMap fileExtension=".odc" mimeType="text/x-ms-odc" />
<mimeMap fileExtension=".ods" mimeType="application/oleobject" />
<mimeMap fileExtension=".oga" mimeType="audio/ogg" />
<mimeMap fileExtension=".ogg" mimeType="video/ogg" />
<mimeMap fileExtension=".ogv" mimeType="video/ogg" />
<mimeMap fileExtension=".one" mimeType="application/onenote" />
<mimeMap fileExtension=".onea" mimeType="application/onenote" />
<mimeMap fileExtension=".onetoc" mimeType="application/onenote" />
<mimeMap fileExtension=".onetoc2" mimeType="application/onenote" />
<mimeMap fileExtension=".onetmp" mimeType="application/onenote" />
<mimeMap fileExtension=".onepkg" mimeType="application/onenote" />
<mimeMap fileExtension=".osdx" mimeType="application/opensearchdescription+xml" />
<mimeMap fileExtension=".otf" mimeType="font/otf" />
<mimeMap fileExtension=".p10" mimeType="application/pkcs10" />
<mimeMap fileExtension=".p12" mimeType="application/x-pkcs12" />
<mimeMap fileExtension=".p7b" mimeType="application/x-pkcs7-certificates" />
<mimeMap fileExtension=".p7c" mimeType="application/pkcs7-mime" />
<mimeMap fileExtension=".p7m" mimeType="application/pkcs7-mime" />
<mimeMap fileExtension=".p7r" mimeType="application/x-pkcs7-certreqresp" />
<mimeMap fileExtension=".p7s" mimeType="application/pkcs7-signature" />
<mimeMap fileExtension=".pbm" mimeType="image/x-portable-bitmap" />
<mimeMap fileExtension=".pcx" mimeType="application/octet-stream" />
<mimeMap fileExtension=".pcz" mimeType="application/octet-stream" />
<mimeMap fileExtension=".pdf" mimeType="application/pdf" />
<mimeMap fileExtension=".pfb" mimeType="application/octet-stream" />
<mimeMap fileExtension=".pfm" mimeType="application/octet-stream" />
<mimeMap fileExtension=".pfx" mimeType="application/x-pkcs12" />
<mimeMap fileExtension=".pgm" mimeType="image/x-portable-graymap" />
<mimeMap fileExtension=".pko" mimeType="application/vnd.ms-pki.pko" />
<mimeMap fileExtension=".pma" mimeType="application/x-perfmon" />
<mimeMap fileExtension=".pmc" mimeType="application/x-perfmon" />
<mimeMap fileExtension=".pml" mimeType="application/x-perfmon" />
<mimeMap fileExtension=".pmr" mimeType="application/x-perfmon" />
<mimeMap fileExtension=".pmw" mimeType="application/x-perfmon" />
<mimeMap fileExtension=".png" mimeType="image/png" />
<mimeMap fileExtension=".pnm" mimeType="image/x-portable-anymap" />
<mimeMap fileExtension=".pnz" mimeType="image/png" />
<mimeMap fileExtension=".pot" mimeType="application/vnd.ms-powerpoint" />
<mimeMap fileExtension=".potm" mimeType="application/vnd.ms-powerpoint.template.macroEnabled.12" />
<mimeMap fileExtension=".potx" mimeType="application/vnd.openxmlformats-officedocument.presentationml.template" />
<mimeMap fileExtension=".ppam" mimeType="application/vnd.ms-powerpoint.addin.macroEnabled.12" />
<mimeMap fileExtension=".ppm" mimeType="image/x-portable-pixmap" />
<mimeMap fileExtension=".pps" mimeType="application/vnd.ms-powerpoint" />
<mimeMap fileExtension=".ppsm" mimeType="application/vnd.ms-powerpoint.slideshow.macroEnabled.12" />
<mimeMap fileExtension=".ppsx" mimeType="application/vnd.openxmlformats-officedocument.presentationml.slideshow" />
<mimeMap fileExtension=".ppt" mimeType="application/vnd.ms-powerpoint" />
<mimeMap fileExtension=".pptm" mimeType="application/vnd.ms-powerpoint.presentation.macroEnabled.12" />
<mimeMap fileExtension=".pptx" mimeType="application/vnd.openxmlformats-officedocument.presentationml.presentation" />
<mimeMap fileExtension=".prf" mimeType="application/pics-rules" />
<mimeMap fileExtension=".prm" mimeType="application/octet-stream" />
<mimeMap fileExtension=".prx" mimeType="application/octet-stream" />
<mimeMap fileExtension=".ps" mimeType="application/postscript" />
<mimeMap fileExtension=".psd" mimeType="application/octet-stream" />
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<mimeMap fileExtension=".psp" mimeType="application/octet-stream" />
<mimeMap fileExtension=".pub" mimeType="application/x-mspublisher" />
<mimeMap fileExtension=".qt" mimeType="video/quicktime" />
<mimeMap fileExtension=".qtl" mimeType="application/x-quicktimeplayer" />
<mimeMap fileExtension=".qxd" mimeType="application/octet-stream" />
<mimeMap fileExtension=".ra" mimeType="audio/x-pn-realaudio" />
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<mimeMap fileExtension=".rar" mimeType="application/octet-stream" />
<mimeMap fileExtension=".ras" mimeType="image/x-cmu-raster" />
<mimeMap fileExtension=".rf" mimeType="image/vnd.rn-realflash" />
<mimeMap fileExtension=".rgb" mimeType="image/x-rgb" />
<mimeMap fileExtension=".rm" mimeType="application/vnd.rn-realmedia" />
<mimeMap fileExtension=".rmi" mimeType="audio/mid" />
<mimeMap fileExtension=".roff" mimeType="application/x-troff" />
<mimeMap fileExtension=".rpm" mimeType="audio/x-pn-realaudio-plugin" />
<mimeMap fileExtension=".rtf" mimeType="application/rtf" />
<mimeMap fileExtension=".rtx" mimeType="text/richtext" />
<mimeMap fileExtension=".scd" mimeType="application/x-msschedule" />
<mimeMap fileExtension=".sct" mimeType="text/scriptlet" />
<mimeMap fileExtension=".sea" mimeType="application/octet-stream" />
<mimeMap fileExtension=".setpay" mimeType="application/set-payment-initiation" />
<mimeMap fileExtension=".setreg" mimeType="application/set-registration-initiation" />
<mimeMap fileExtension=".sgml" mimeType="text/sgml" />
<mimeMap fileExtension=".sh" mimeType="application/x-sh" />
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<mimeMap fileExtension=".sit" mimeType="application/x-stuffit" />
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<mimeMap fileExtension=".smx" mimeType="audio/x-smd" />
<mimeMap fileExtension=".smz" mimeType="audio/x-smd" />
<mimeMap fileExtension=".snd" mimeType="audio/basic" />
<mimeMap fileExtension=".snp" mimeType="application/octet-stream" />
<mimeMap fileExtension=".spc" mimeType="application/x-pkcs7-certificates" />
<mimeMap fileExtension=".spl" mimeType="application/futuresplash" />
<mimeMap fileExtension=".spx" mimeType="audio/ogg" />
<mimeMap fileExtension=".src" mimeType="application/x-wais-source" />
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<mimeMap fileExtension=".sst" mimeType="application/vnd.ms-pki.certstore" />
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<mimeMap fileExtension=".sv4cpio" mimeType="application/x-sv4cpio" />
<mimeMap fileExtension=".sv4crc" mimeType="application/x-sv4crc" />
<mimeMap fileExtension=".svg" mimeType="image/svg+xml" />
<mimeMap fileExtension=".svgz" mimeType="image/svg+xml" />
<mimeMap fileExtension=".swf" mimeType="application/x-shockwave-flash" />
<mimeMap fileExtension=".t" mimeType="application/x-troff" />
<mimeMap fileExtension=".tar" mimeType="application/x-tar" />
<mimeMap fileExtension=".tcl" mimeType="application/x-tcl" />
<mimeMap fileExtension=".tex" mimeType="application/x-tex" />
<mimeMap fileExtension=".texi" mimeType="application/x-texinfo" />
<mimeMap fileExtension=".texinfo" mimeType="application/x-texinfo" />
<mimeMap fileExtension=".tgz" mimeType="application/x-compressed" />
<mimeMap fileExtension=".thmx" mimeType="application/vnd.ms-officetheme" />
<mimeMap fileExtension=".thn" mimeType="application/octet-stream" />
<mimeMap fileExtension=".tif" mimeType="image/tiff" />
<mimeMap fileExtension=".tiff" mimeType="image/tiff" />
<mimeMap fileExtension=".toc" mimeType="application/octet-stream" />
<mimeMap fileExtension=".tr" mimeType="application/x-troff" />
<mimeMap fileExtension=".trm" mimeType="application/x-msterminal" />
<mimeMap fileExtension=".ts" mimeType="video/vnd.dlna.mpeg-tts" />
<mimeMap fileExtension=".tsv" mimeType="text/tab-separated-values" />
<mimeMap fileExtension=".ttf" mimeType="application/octet-stream" />
<mimeMap fileExtension=".tts" mimeType="video/vnd.dlna.mpeg-tts" />
<mimeMap fileExtension=".txt" mimeType="text/plain" />
<mimeMap fileExtension=".u32" mimeType="application/octet-stream" />
<mimeMap fileExtension=".uls" mimeType="text/iuls" />
<mimeMap fileExtension=".ustar" mimeType="application/x-ustar" />
<mimeMap fileExtension=".vbs" mimeType="text/vbscript" />
<mimeMap fileExtension=".vcf" mimeType="text/x-vcard" />
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<mimeMap fileExtension=".vdx" mimeType="application/vnd.ms-visio.viewer" />
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<mimeMap fileExtension=".vsto" mimeType="application/x-ms-vsto" />
<mimeMap fileExtension=".vsw" mimeType="application/vnd.visio" />
<mimeMap fileExtension=".vsx" mimeType="application/vnd.visio" />
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<mimeMap fileExtension=".wav" mimeType="audio/wav" />
<mimeMap fileExtension=".wax" mimeType="audio/x-ms-wax" />
<mimeMap fileExtension=".wbmp" mimeType="image/vnd.wap.wbmp" />
<mimeMap fileExtension=".wcm" mimeType="application/vnd.ms-works" />
<mimeMap fileExtension=".wdb" mimeType="application/vnd.ms-works" />
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<mimeMap fileExtension=".wm" mimeType="video/x-ms-wm" />
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<mimeMap fileExtension=".wmf" mimeType="application/x-msmetafile" />
<mimeMap fileExtension=".wml" mimeType="text/vnd.wap.wml" />
<mimeMap fileExtension=".wmlc" mimeType="application/vnd.wap.wmlc" />
<mimeMap fileExtension=".wmls" mimeType="text/vnd.wap.wmlscript" />
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<mimeMap fileExtension=".wmz" mimeType="application/x-ms-wmz" />
<mimeMap fileExtension=".woff" mimeType="font/x-woff" />
<mimeMap fileExtension=".wps" mimeType="application/vnd.ms-works" />
<mimeMap fileExtension=".wri" mimeType="application/x-mswrite" />
<mimeMap fileExtension=".wrl" mimeType="x-world/x-vrml" />
<mimeMap fileExtension=".wrz" mimeType="x-world/x-vrml" />
<mimeMap fileExtension=".wsdl" mimeType="text/xml" />
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<mimeMap fileExtension=".wvx" mimeType="video/x-ms-wvx" />
<mimeMap fileExtension=".x" mimeType="application/directx" />
<mimeMap fileExtension=".xaf" mimeType="x-world/x-vrml" />
<mimeMap fileExtension=".xaml" mimeType="application/xaml+xml" />
<mimeMap fileExtension=".xap" mimeType="application/x-silverlight-app" />
<mimeMap fileExtension=".xbap" mimeType="application/x-ms-xbap" />
<mimeMap fileExtension=".xbm" mimeType="image/x-xbitmap" />
<mimeMap fileExtension=".xdr" mimeType="text/plain" />
<mimeMap fileExtension=".xht" mimeType="application/xhtml+xml" />
<mimeMap fileExtension=".xhtml" mimeType="application/xhtml+xml" />
<mimeMap fileExtension=".xla" mimeType="application/vnd.ms-excel" />
<mimeMap fileExtension=".xlam" mimeType="application/vnd.ms-excel.addin.macroEnabled.12" />
<mimeMap fileExtension=".xlc" mimeType="application/vnd.ms-excel" />
<mimeMap fileExtension=".xlm" mimeType="application/vnd.ms-excel" />
<mimeMap fileExtension=".xls" mimeType="application/vnd.ms-excel" />
<mimeMap fileExtension=".xlsb" mimeType="application/vnd.ms-excel.sheet.binary.macroEnabled.12" />
<mimeMap fileExtension=".xlsm" mimeType="application/vnd.ms-excel.sheet.macroEnabled.12" />
<mimeMap fileExtension=".xlsx" mimeType="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet" />
<mimeMap fileExtension=".xlt" mimeType="application/vnd.ms-excel" />
<mimeMap fileExtension=".xltm" mimeType="application/vnd.ms-excel.template.macroEnabled.12" />
<mimeMap fileExtension=".xltx" mimeType="application/vnd.openxmlformats-officedocument.spreadsheetml.template" />
<mimeMap fileExtension=".xlw" mimeType="application/vnd.ms-excel" />
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<mimeMap fileExtension=".xof" mimeType="x-world/x-vrml" />
<mimeMap fileExtension=".xpm" mimeType="image/x-xpixmap" />
<mimeMap fileExtension=".xps" mimeType="application/vnd.ms-xpsdocument" />
<mimeMap fileExtension=".xsd" mimeType="text/xml" />
<mimeMap fileExtension=".xsf" mimeType="text/xml" />
是信息的生成者，其他每个人都有兴趣知道它何时发生变化。它也是模型 - 视图 - 控制器范例的变体