用Java做一个WWW浏览器

// HTMLExample.java
//
import javax.swing.*;
import javax.swing.event.*;
import java.io.*;
public class HTMLExample {
public static void main(String[] args) {
JEditorPane pane = null;
try {
pane = new JEditorPane(args[0]);
}
catch (IOException ex) {
ex.printStackTrace(System.err);
System.exit(1);
}
pane.setEditable(false);
// Add a hyperlink listener
final JEditorPane finalPane = pane;
pane.addHyperlinkListener(new HyperlinkListener() {
public void hyperlinkUpdate(HyperlinkEvent ev) {
try {
if (ev.getEventType() == HyperlinkEvent.EventType.ACTIVATED)
finalPane.setPage(ev.getURL());
} catch (IOException ex) { ex.printStackTrace(System.err); }
}
});
JFrame frame = new JFrame();
frame.addWindowListener(new BasicWindowMonitor());
frame.setContentPane(new JScrollPane(pane));
frame.setSize(350,400);
frame.setVisible(true);
}
}
其实做一个浏览器当毕业设计简直是太简单了，我这个例子很简单，但是如果你想做的复杂一点也不难啊，稍微看看书就行。

你去书店看 java how to program 第5版虽然书翻译的不好,但是上面在网络那张就有一个操作url的东西(应该时例子)

你可以看看hotjava,一个很老的java浏览器

hotjava下载下来
解压缩
有源代码可以看的

apache commons httpclient 包里有你要的东西，关于http的大量工具，足够你做十个浏览器。

《java网络编程》中有一个完整的实例

// DummyBrowser.javaimport javax.swing.*;
import javax.swing.event.*;
import java.awt.*;
import java.awt.event.*;
import java.net.*;
import java.io.*;
import java.util.Stack;/**
*
* "DummyBrowser" is a very simple minimalist web browser, written in Java.
* It uses the JEditPane swing component to render HTML pages,
* and to follow links to other pages. Note that JEditPane can only
* render some HTML, so that pages with HTML content it can't
* handle will either not be correctly rendered, or will cause errors.
*
* 
* This program is heavily based on the Java demonstration Browser class,
* written by <a href="http://www.apl.jhu.edu/~hall/java/">Marty Hall
* - www.apl.jhu.edu/~hall/java</a> in 1998.
* It has been modified by Lawrie Brown to add a few more features,
* to suit its use to test web server access in isolated, test
* computer networking and cisco lab classes.
*
* @author Lawrie Brown
* @version 31 Mar 2005
* @see <a href="http://www.unsw.adfa.edu.au/~lpb/">Lawrie Brown's ADFA home</a>
* @see <a href="http://www.apl.jhu.edu/~hall/java/">Marty Hall - demo java Browser</a>
*/ /**
 * Modify:
 * 2005-4-17 by HITXU.
 */public class DummyBrowser extends JFrame implements HyperlinkListener,
 ActionListener { private JButton homeButton, backButton, quitButton;
 private JTextField urlField;
 private JEditorPane htmlPane;
 private String startURL = null;
 private Stack history; /**
 * main program routine which creates a new instance of DummyBrowser,
 * displaying either the default home page describing this program,
 * or the file named on the command-line.
 */
 public static void main(String[] args) {
 if (args.length == 0)
 new DummyBrowser("http://www.csdn.net");
 else
 new DummyBrowser(args[0]);
 } /**
 * construct a new DummyBrowser instance, displaying the local file
 * whose name is supplied to the constructor.
 *
 * @param file the local file to display
 */
 public DummyBrowser(String file) {
 super("Dummy Browser");
 setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); history = new Stack();
 // setup initial file URL and history stack
if(file != null)
{
 startURL = this.getClass().getResource(file).toExternalForm();
 history.push(startURL);
}
 // build the GUI components for DummyBrowser
 JPanel topPanel = new JPanel();
 topPanel.setBackground(Color.lightGray);
 homeButton = new JButton("Home");
 homeButton.addActionListener(this);
 backButton = new JButton("Back");
 backButton.addActionListener(this);
 quitButton = new JButton("Quit");
 quitButton.addActionListener(this);
 JLabel urlLabel = new JLabel("URL:");
 urlField = new JTextField(30);
 urlField.setText(startURL);
 urlField.addActionListener(this);
 topPanel.add(homeButton);
 topPanel.add(urlLabel);
 topPanel.add(urlField);
 topPanel.add(backButton);
 topPanel.add(quitButton);
 getContentPane().add(topPanel, BorderLayout.NORTH); htmlPane = new JEditorPane();
 htmlPane.setEditable(false);
 htmlPane.addHyperlinkListener(this);
 try {
 if(startURL != null)
 htmlPane.setPage(startURL);
 } catch(IOException ioe) {
 warnUser("Error rendering initial HTML page " + startURL + ": " + ioe);
 }
 JScrollPane scrollPane = new JScrollPane(htmlPane);
 getContentPane().add(scrollPane, BorderLayout.CENTER); Dimension screenSize = getToolkit().getScreenSize();
 int width = screenSize.width * 8 / 10;
 int height = screenSize.height * 8 / 10;
 setBounds(width/8, height/8, width, height);
 setVisible(true);
 } public void actionPerformed(ActionEvent event) {
 String url = startURL;
 Object source = event.getSource();
 if (source == urlField) {
 url = urlField.getText();
 } else if (source == backButton) {
 if (!history.empty()) url = (String)history.pop(); // pop current page
 if (!history.empty()) url = (String)history.pop(); // pop previous page
 } else if (source == quitButton) {
 System.exit(0);
 }
 // assume Home button pressed if none of above try {
 htmlPane.setPage(new URL(url));
 urlField.setText(url);
 history.push(url);
 } catch(IOException ioe) {
 warnUser("Can't follow link to " + url + ": " + ioe);
 }
 } public void hyperlinkUpdate(HyperlinkEvent event) {
 if (event.getEventType() == HyperlinkEvent.EventType.ACTIVATED) {
 try {
 htmlPane.setPage(event.getURL());
 urlField.setText(event.getURL().toExternalForm());
 history.push(event.getURL().toExternalForm());
 } catch(IOException ioe) {
 warnUser("Can't follow link to "
 + event.getURL().toExternalForm() + ": " + ioe);
 }
 }
 } private void warnUser(String message) {
 JOptionPane.showMessageDialog(this, message, "Error",
 JOptionPane.ERROR_MESSAGE);
 } public void windowClosing(WindowEvent event) {
 System.exit(0);
 }}

To: 回复人： HitXU(一天不学习，赶不上刘少奇) ( ) 信誉：100 2005-04-17 13:30:00 得分: 0
C:\>java DummyBrowser www.163.com
Exception in thread "main" java.lang.NullPointerException
 at DummyBrowser.<init>(DummyBrowser.java:73)
 at DummyBrowser.main(DummyBrowser.java:56)
C:\>java DummyBrowser
Exception in thread "main" java.lang.NullPointerException
 at DummyBrowser.<init>(DummyBrowser.java:73)
 at DummyBrowser.main(DummyBrowser.java:54)

看一下一个很好的java html控件
比swing的好多了,还支持javascript
http://www.icesoft.com/还有,这个是调用mozilla的
http://jrex.mozdev.org/swt的browser也不错,win下调用ie,linux下调用mozilla,mac下调用safari

还有你要myie的源码吗?要的留个email

MYIE的源码还是现在的MAXTHON？是什么的？C++？还是DELPHI？

myie的,不是maxthon(myie2),C++,3.2版吧据我在maxthon论坛上潜水所知,目前国内几乎所有的tabbed browser,象maxthon,green browser等在开始时都是基于myie的源码!

要是有哪个WWW浏览器的源码,可以发给我,
不过,只要Java的,好像那些WWW浏览器都是用VC做的吧?

重新贴一下，不要初始页面了。// DummyBrowser.javaimport javax.swing.*;
import javax.swing.event.*;
import java.awt.*;
import java.awt.event.*;
import java.net.*;
import java.io.*;
import java.util.Stack;/**
*
* "DummyBrowser" is a very simple minimalist web browser, written in Java.
* It uses the JEditPane swing component to render HTML pages,
* and to follow links to other pages. Note that JEditPane can only
* render some HTML, so that pages with HTML content it can't
* handle will either not be correctly rendered, or will cause errors.
*
* 
* This program is heavily based on the Java demonstration Browser class,
* written by <a href="http://www.apl.jhu.edu/~hall/java/">Marty Hall
* - www.apl.jhu.edu/~hall/java</a> in 1998.
* It has been modified by Lawrie Brown to add a few more features,
* to suit its use to test web server access in isolated, test
* computer networking and cisco lab classes.
*
* @author Lawrie Brown
* @version 31 Mar 2005
* @see <a href="http://www.unsw.adfa.edu.au/~lpb/">Lawrie Brown's ADFA home</a>
* @see <a href="http://www.apl.jhu.edu/~hall/java/">Marty Hall - demo java Browser</a>
*/ /**
 * Modified:
 * 2005-4-18 by HITXU.
 */public class DummyBrowser extends JFrame implements HyperlinkListener,
 ActionListener { private JButton homeButton, backButton, quitButton;
 private JTextField urlField;
 private JEditorPane htmlPane;
 private String startURL = null;
 private Stack history; /**
 * main program routine which creates a new instance of DummyBrowser,
 * displaying either the default home page describing this program,
 * or the file named on the command-line.
 */
 public static void main(String[] args) {
 if (args.length == 0)
 new DummyBrowser(null);
 else
 new DummyBrowser(args[0]);
 } /**
 * construct a new DummyBrowser instance, displaying the local file
 * whose name is supplied to the constructor.
 *
 * @param file the local file to display
 */
 public DummyBrowser(String file) {
 super("Dummy Browser");
 setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); history = new Stack();
 // setup initial file URL and history stack
if(file != null)
{
 startURL = this.getClass().getResource(file).toExternalForm();
 history.push(startURL);
}
 // build the GUI components for DummyBrowser
 JPanel topPanel = new JPanel();
 topPanel.setBackground(Color.lightGray);
 homeButton = new JButton("Home");
 homeButton.addActionListener(this);
 backButton = new JButton("Back");
 backButton.addActionListener(this);
 quitButton = new JButton("Quit");
 quitButton.addActionListener(this);
 JLabel urlLabel = new JLabel("URL:");
 urlField = new JTextField(30);
 urlField.setText(startURL);
 urlField.addActionListener(this);
 topPanel.add(homeButton);
 topPanel.add(urlLabel);
 topPanel.add(urlField);
 topPanel.add(backButton);
 topPanel.add(quitButton);
 getContentPane().add(topPanel, BorderLayout.NORTH); htmlPane = new JEditorPane();
 htmlPane.setEditable(false);
 htmlPane.addHyperlinkListener(this);
 try {
 if(startURL != null)
 htmlPane.setPage(startURL);
 } catch(IOException ioe) {
 warnUser("Error rendering initial HTML page " + startURL + ": " + ioe);
 }
 JScrollPane scrollPane = new JScrollPane(htmlPane);
 getContentPane().add(scrollPane, BorderLayout.CENTER); Dimension screenSize = getToolkit().getScreenSize();
 int width = screenSize.width * 8 / 10;
 int height = screenSize.height * 8 / 10;
 setBounds(width/8, height/8, width, height);
 setVisible(true);
 } public void actionPerformed(ActionEvent event) {
 String url = startURL;
 Object source = event.getSource();
 if (source == urlField) {
 url = urlField.getText();
 } else if (source == backButton) {
 if (!history.empty()) url = (String)history.pop(); // pop current page
 if (!history.empty()) url = (String)history.pop(); // pop previous page
 } else if (source == quitButton) {
 System.exit(0);
 }
 // assume Home button pressed if none of above try {
 htmlPane.setPage(new URL(url));
 urlField.setText(url);
 history.push(url);
 } catch(IOException ioe) {
 warnUser("Can't follow link to " + url + ": " + ioe);
 }
 } public void hyperlinkUpdate(HyperlinkEvent event) {
 if (event.getEventType() == HyperlinkEvent.EventType.ACTIVATED) {
 try {
 htmlPane.setPage(event.getURL());
 urlField.setText(event.getURL().toExternalForm());
 history.push(event.getURL().toExternalForm());
 } catch(IOException ioe) {
 warnUser("Can't follow link to "
 + event.getURL().toExternalForm() + ": " + ioe);
 }
 }
 } private void warnUser(String message) {
 JOptionPane.showMessageDialog(this, message, "Error",
 JOptionPane.ERROR_MESSAGE);
 } public void windowClosing(WindowEvent event) {
 System.exit(0);
 }}

http://www.ojava.net/read.php?tid=24&fpage=1
浏览器源码.Java的

哪有那么简单？你们怎么会想象得那么简单呢？该不会是把IE的库拿来调用吧？浏览器要实现的功能很多啊，比如EXCEL、WORD的操作，动态图象，JAVASCRIPT的支持，这些哪个不需要你干上半年！我说得对不对？

现在我们所作只有调用别的browser控件,java的可以直接调用swing的JEditorPane,或我说的第三方html显示控件比swing的好多了,还支持javascript
http://www.icesoft.com/还有,这个是调用mozilla的
http://jrex.mozdev.org/swt的browser也不错,win下调用ie,linux下调用mozilla,mac下调用safari难道这里有牛人准备自己写一个html显示控件,不但要渲染页面,还要控制JAVASCRIPT?半年哪够?要是只要半年,mozilla还要那么多人,写那些年?

Mark 好贴,好资源,HOHOPS:如果什么都从头开始搞,从低层做起,那中国的计算机算是完了.

自己做支持javascript的浏览器？那可就真的不简单了，我很期待搂主的作品！
swing的EditPane很差的，很多东西都不支持。

To wandanle(给命运点阳光它就灿烂，它一灿烂我就完蛋): 呵呵，任何一个东西想做专业了都很困难，我说的简单是指应付毕业设计，也刚从大学走出来没几天，很了解目前大学的情况，做一个应付毕业设计的浏览器还是很轻松的。如果多下点功夫做的好一点，说不定还能评个优秀呢。。^_^

回复人： parol2910(树上的青蛙) ( ) 信誉：100 2005-04-19 08:49:00 得分: 0
http://www.ojava.net/read.php?tid=24&fpage=1
浏览器源码.Java的这个网页打不开啊???

还有,我是用JB做的,
这与JDK有点不同的!

还有,我是用JB做的,
这与JDK有点不同的!
??????

foxty(火狐) ( ) 信誉：100  2005-04-19 14:04:00  得分: 0

   Mark 好贴,好资源,HOHOPS:如果什么都从头开始搞,从低层做起,那中国的计算机算是完了.
=================================================================哈哈，恰恰相反，如果什么都用别人的，那中国的计算机才真正完了。你说说，现在中国的计算机业还剩下什么了？

to wandanle(给命运点阳光它就灿烂，它一灿烂我就完蛋) :我们现在说的是楼主的毕设问题,不要什么都上升到国家高度,楼主一个人(好吧,就算是一个班),在一两个月内能从底层做起?

dyhml(VirusCamp):这我知道，我只是针对你的那句话－－如果什么都从头开始搞,从低层做起,那中国的计算机算是完了－－说的，毕竟是你先上升到国家的高度。

我现在做的这个简单的WWW浏览器,不能浏览图片和FLASH,高手能指点吗?

参考JAVA编程艺术第7章import java.awt.*;
import java.awt.event.*;
import java.net.*;
import java.util.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.html.*;// The Mini Web Browser.
public class MiniBrowser extends JFrame
 implements HyperlinkListener
{
 // These are the buttons for iterating through the page list.
 private JButton backButton, forwardButton; // Page location text field.
 private JTextField locationTextField; // Editor pane for displaying pages.
 private JEditorPane displayEditorPane; // Browser's list of pages that have been visited.
 private ArrayList pageList = new ArrayList(); // Constructor for Mini Web Browser.
 public MiniBrowser()
 {
 // Set application title.
 super("Mini Browser"); // Set window size.
 setSize(640, 480); // Handle closing events.
 addWindowListener(new WindowAdapter() {
 public void windowClosing(WindowEvent e) {
 actionExit();
 }
 }); // Set up file menu.
 JMenuBar menuBar = new JMenuBar();
 JMenu fileMenu = new JMenu("File");
 fileMenu.setMnemonic(KeyEvent.VK_F);
 JMenuItem fileExitMenuItem = new JMenuItem("Exit",
 KeyEvent.VK_X);
 fileExitMenuItem.addActionListener(new ActionListener() {
 public void actionPerformed(ActionEvent e) {
 actionExit();
 }
 });
 fileMenu.add(fileExitMenuItem);
 menuBar.add(fileMenu);
 setJMenuBar(menuBar); // Set up button panel.
 JPanel buttonPanel = new JPanel();
 backButton = new JButton("< Back");
 backButton.addActionListener(new ActionListener() {
 public void actionPerformed(ActionEvent e) {
 actionBack();
 }
 });
 backButton.setEnabled(false);
 buttonPanel.add(backButton);
 forwardButton = new JButton("Forward >");
 forwardButton.addActionListener(new ActionListener() {
 public void actionPerformed(ActionEvent e) {
 actionForward();
 }
 });
 forwardButton.setEnabled(false);
 buttonPanel.add(forwardButton);
 locationTextField = new JTextField(35);
 locationTextField.addKeyListener(new KeyAdapter() {
 public void keyReleased(KeyEvent e) {
 if (e.getKeyCode() == KeyEvent.VK_ENTER) {
 actionGo();
 }
 }
 });
 buttonPanel.add(locationTextField);
 JButton goButton = new JButton("GO");
 goButton.addActionListener(new ActionListener() {
 public void actionPerformed(ActionEvent e) {
 actionGo();
 }
 });
 buttonPanel.add(goButton); // Set up page display.
 displayEditorPane = new JEditorPane();
 displayEditorPane.setContentType("text/html");
 displayEditorPane.setEditable(false);
 displayEditorPane.addHyperlinkListener(this); getContentPane().setLayout(new BorderLayout());
 getContentPane().add(buttonPanel, BorderLayout.NORTH);
 getContentPane().add(new JScrollPane(displayEditorPane),
 BorderLayout.CENTER);
 } // Exit this program.
 private void actionExit() {
 System.exit(0);
 } // Go back to the page viewed before the current page.
 private void actionBack() {
 URL currentUrl = displayEditorPane.getPage();
 int pageIndex = pageList.indexOf(currentUrl.toString());
 try {
 showPage(
 new URL((String) pageList.get(pageIndex - 1)), false);
 }
 catch (Exception e) {}
 } // Go forward to the page viewed after the current page.
 private void actionForward() {
 URL currentUrl = displayEditorPane.getPage();
 int pageIndex = pageList.indexOf(currentUrl.toString());
 try {
 showPage(
 new URL((String) pageList.get(pageIndex + 1)), false);
 }
 catch (Exception e) {}
 } // Load and show the page specified in the location text field.
 private void actionGo() {
 URL verifiedUrl = verifyUrl(locationTextField.getText());
 if (verifiedUrl != null) {
 showPage(verifiedUrl, true);
 } else {
 showError("Invalid URL");
 }
 } // Show dialog box with error message.
 private void showError(String errorMessage) {
 JOptionPane.showMessageDialog(this, errorMessage,
 "Error", JOptionPane.ERROR_MESSAGE);
 } // Verify URL format.
 private URL verifyUrl(String url) {
 // Only allow HTTP URLs.
 if (!url.toLowerCase().startsWith("http://"))
 return null; // Verify format of URL.
 URL verifiedUrl = null;
 try {
 verifiedUrl = new URL(url);
 } catch (Exception e) {
 return null;
 } return verifiedUrl;
 } /* Show the specified page and add it to
 the page list if specified. */
 private void showPage(URL pageUrl, boolean addToList)
 {
 // Show hour glass cursor while crawling is under way.
 setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR)); try {
 // Get URL of page currently being displayed.
 URL currentUrl = displayEditorPane.getPage(); // Load and display specified page.
 displayEditorPane.setPage(pageUrl); // Get URL of new page being displayed.
 URL newUrl = displayEditorPane.getPage(); // Add page to list if specified.
 if (addToList) {
 int listSize = pageList.size();
 if (listSize > 0) {
 int pageIndex =
 pageList.indexOf(currentUrl.toString());
 if (pageIndex < listSize - 1) {
 for (int i = listSize - 1; i > pageIndex; i--) {
 pageList.remove(i);
 }
 }
 }
 pageList.add(newUrl.toString());
 } // Update location text field with URL of current page.
 locationTextField.setText(newUrl.toString()); // Update buttons based on the page being displayed.
 updateButtons();
 }
 catch (Exception e)
 {
 // Show error messsage.
 showError("Unable to load page");
 }
 finally
 {
 // Return to default cursor.
 setCursor(Cursor.getDefaultCursor());
 }
 } /* Update back and forward buttons based on
 the page being displayed. */
 private void updateButtons() {
 if (pageList.size() < 2) {
 backButton.setEnabled(false);
 forwardButton.setEnabled(false);
 } else {
 URL currentUrl = displayEditorPane.getPage();
 int pageIndex = pageList.indexOf(currentUrl.toString());
 backButton.setEnabled(pageIndex > 0);
 forwardButton.setEnabled(
 pageIndex < (pageList.size() - 1));
 }
 } // Handle hyperlink's being clicked.
 public void hyperlinkUpdate(HyperlinkEvent event) {
 HyperlinkEvent.EventType eventType = event.getEventType();
 if (eventType == HyperlinkEvent.EventType.ACTIVATED) {
 if (event instanceof HTMLFrameHyperlinkEvent) {
 HTMLFrameHyperlinkEvent linkEvent =
 (HTMLFrameHyperlinkEvent) event;
 HTMLDocument document =
 (HTMLDocument) displayEditorPane.getDocument();
 document.processHTMLFrameHyperlinkEvent(linkEvent);
 } else {
 showPage(event.getURL(), true);
 }
 }
 } // Run the Mini Browser.
 public static void main(String[] args) {
 MiniBrowser browser = new MiniBrowser();
 browser.show();
 }
}

回复人： like_java(爱Java同C++) ( ) 信誉：100 :我现在做的这个简单的WWW浏览器,不能浏览图片和FLASH,高手能指点吗?
---------------------------我的分割线盗版必究-----------------------------swing的JEditPane功能很弱的,不会支持FLASH,但图片是支持的.要不就用第三方的控件,要不就自己写?还是都算了吧,就这样了.

为什么做出一个与MYIE2差不多都这么难呢,现在浏览网页质量好差啊,

《java编程艺术》书上好像有一个这样的例子，不过还有好多的功能要自己添加就是了！

swing的JEditPane功能很弱的,浏览网页质量就是差

hotjava　浏览器可以支持很多格式，是不是程序代码没到位呢？

调试易

用Java做一个WWW浏览器

解决方案 »