用java做一个简易浏览器

import java.awt.*; 

目前成都创新互联已为上千余家的企业提供了网站建设、域名、网络空间、网站托管、服务器租用、企业网站设计、潞州网站维护等服务，公司将坚持客户导向、应用为本的策略，正道将秉承"和谐、参与、激情"的文化，与客户和合作伙伴齐心协力一起成长，共同发展。

import java.awt.event.*; 

import java.io.IOException; 

import java.net.*; 

import javax.swing.*; 

import javax.swing.event.HyperlinkEvent; 

import javax.swing.event.HyperlinkListener; 

public class HTTPBrowserDemo extends JFrame { 

private JLabel jlAddress,jlInfo; 

private JTextField jtfAddress; 

private JEditorPane jtpShow; 

private JPanel panel; 

private JButton btnGO; 

public static void main(String[] args) { 

HTTPBrowserDemo hbd=new HTTPBrowserDemo(); 

} 

HTTPBrowserDemo(){ 

jlAddress=new JLabel("地址"); 

jlInfo=new JLabel(); 

jtpShow=new JEditorPane(); 

panel=new JPanel(); 

jtfAddress=new JTextField(20); 

btnGO=new JButton("转到"); 

add(panel,BorderLayout.NORTH); 

add(jtpShow,BorderLayout.CENTER); 

add(jlInfo,BorderLayout.SOUTH); 

panel.add(jlAddress); 

panel.add(jtfAddress); 

panel.add(btnGO); 

setVisible(true); 

setSize(350, 280); 

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 

btnGO.addActionListener(new ShowHTMLListener()); 

jtpShow.setEditable(false); 

jtpShow.addHyperlinkListener(new MyHyperlinkListener()); 

} 

class ShowHTMLListener implements ActionListener{ 

public void actionPerformed(ActionEvent e){ 

String str=jtfAddress.getText(); 

try { 

if (!str.startsWith("http://")){ 

str="http://"+str; 

} 

jlInfo.setText("连接中..."); 

URL address=new URL(str); 

jtpShow.setPage(address); 

jlInfo.setText("完成"); 

} catch (MalformedURLException e1) { 

// TODO Auto-generated catch block 

e1.printStackTrace(); 

} catch (IOException e2) { 

// TODO: handle exception 

} 

} 

} 

class MyHyperlinkListener implements HyperlinkListener{ 

public void hyperlinkUpdate(HyperlinkEvent e) { 

if(e.getEventType()==HyperlinkEvent.EventType.ACTIVATED){ 

JEditorPane pane=(JEditorPane)e.getSource(); 

try { 

pane.setPage(e.getURL()); 

} catch (IOException e1) { 

// TODO Auto-generated catch block 

e1.printStackTrace(); 

} 

} 

}         

} 

}

用JAVA编写一个简单的浏览器程序

import javax.swing.*;

import java.awt.*;

import java.awt.event.*;

import java.net.*;

import java.io.*;

import javax.swing.event.*;

@SuppressWarnings("serial")

class Win3 extends JFrame implements ActionListener,Runnable

{

JButton button;

URL url;

JTextField text;

JEditorPane editPane;

byte b[]=new byte[118];

Thread thread;

public Win3()

{

text=new JTextField(20);

editPane=new JEditorPane();

editPane.setEditable(false);

button=new JButton("确定");

button.addActionListener(this);

thread=new Thread(this);

JPanel p=new JPanel();

p.add(new JLabel("输入网址:"));

p.add(text);

p.add(button);

Container con=getContentPane();

con.add(new JScrollPane(editPane),BorderLayout.CENTER);

con.add(p,BorderLayout.NORTH);

setBounds(60,60,400,300);

setVisible(true);

validate();

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

editPane.addHyperlinkListener(new HyperlinkListener()

{

public void hyperlinkUpdate(HyperlinkEvent e)

{

if(e.getEventType()==

HyperlinkEvent.EventType.ACTIVATED)

{

try{

editPane.setPage(e.getURL());

}

catch(IOException e1)

{

editPane.setText(""+e1);

}

}

}

}

);

}

public void actionPerformed(ActionEvent e)

{

if(!(thread.isAlive()))

thread=new Thread(this);

try{

thread.start();

}

catch(Exception ee)

{

text.setText("我正在读取"+url);

}

}

public void run()

{

try {

int n=-1;

editPane.setText(null);

url=new URL(text.getText().trim());

editPane.setPage(url);

}

catch(MalformedURLException e1)

{

text.setText(""+e1);

return;

}

catch(IOException e1)

{

text.setText(""+e1);

return;

}

}

}

public class Example3

{

public static void main(String args[])

{

new Win3();

}

}

JAVA代码，关于浏览器 求教

html

head

script

function move(){

var x = Math.floor(Math.random()*800);

var y = Math.floor(Math.random()*600);

var r = Math.floor(Math.random()*16).toString(16);

var g = Math.floor(Math.random()*16).toString(16);

var b = Math.floor(Math.random()*16).toString(16);

document.getElementById("prank1").style.marginLeft = x+"px";

document.getElementById("prank1").style.marginTop = y+"px";

x = Math.floor(Math.random()*800);

y = Math.floor(Math.random()*600);

r = Math.floor(Math.random()*16).toString(16);

g = Math.floor(Math.random()*16).toString(16);

b = Math.floor(Math.random()*16).toString(16);

document.getElementById("prank2").style.marginLeft = x+"px";

document.getElementById("prank2").style.marginTop = y+"px";

document.body.style.background ="#"+r+g+b;

}

function win(){

alert("You Win!!!");

}

/script

/head

body

button id="close" onclick="window.close()"close window/button

button id="prank1" onMouseMove="move()" onClick="win()"Click Me/button

button id="prank2" onMouseMove="move()" onClick="win()"Click Me/button

/body

/html

java开发手机浏览器 只要最基本的功能

3.WebBrowser.java

package CH04.源程序;

/*

**网页浏览器主程序

**WebBrowser.java

*/

import java.awt.*;

import javax.swing.*;

import javax.swing.text.*;

import java.awt.event.*;

import javax.swing.event.*;

import javax.swing.border.*;

import javax.swing.filechooser.FileFilter;

import javax.swing.filechooser.FileView;

import java.io.*;

import java.net.*;

import java.util.*;

public class WebBrowser extends JFrame implements HyperlinkListener,ActionListener{

//建立工具栏用来显示地址栏

JToolBar bar=new JToolBar ();

//建立网页显示界面

JTextField jurl = new JTextField (60);

JEditorPane jEditorPane1 = new JEditorPane ();

JScrollPane scrollPane = new JScrollPane (jEditorPane1);

JFileChooser chooser=new JFileChooser ();

JFileChooser chooser1=new JFileChooser ();

String htmlSource;

JWindow window = new JWindow (WebBrowser.this);

JButton button2=new JButton ("窗口还原");

Toolkit toolkit = Toolkit.getDefaultToolkit();

//建立菜单栏

JMenuBar jMenuBar1 = new JMenuBar();

//建立菜单组

JMenu fileMenu = new JMenu ("文件(F)");

//建立菜单项

JMenuItem saveAsItem = new JMenuItem ("另存为(A)...");

JMenuItem exitItem=new JMenuItem ("退出(I)");

JMenu editMenu=new JMenu ("编辑(E)");

JMenuItem backItem=new JMenuItem ("后退");

JMenuItem forwardItem=new JMenuItem ("前进");

JMenu viewMenu=new JMenu ("视图(V)");

JMenuItem fullscreenItem=new JMenuItem ("全屏(U)");

JMenuItem sourceItem=new JMenuItem ("查看源码(C)");

JMenuItem reloadItem=new JMenuItem ("刷新(R)");

//建立工具栏

JToolBar toolBar = new JToolBar();

//建立工具栏中的按钮组件

JButton picSave = new JButton("另存为");

JButton picBack = new JButton("后退");

JButton picForward = new JButton("前进");

JButton picView = new JButton("查看源代码");

JButton picExit = new JButton("退出");

JLabel label=new JLabel ("地址");

JButton button=new JButton ("转向");

Box adress=Box.createHorizontalBox ();

//ArrayList对象，用来存放历史地址

private ArrayList history=new ArrayList();

//整型变量，表示历史地址的访问顺序

private int historyIndex;

/**

**构造函数

**初始化图形用户界面

*/

public WebBrowser(){

setTitle ("网页浏览器");

setResizable(false);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

//为jEditorPane1添加事件侦听

jEditorPane1.addHyperlinkListener (this);

//为组件fileMenu设置热键‘F’

fileMenu.setMnemonic('F');

saveAsItem.setMnemonic ('S');

//为“另存为”组件设置快捷键为ctrl+s

saveAsItem.setAccelerator (KeyStroke.getKeyStroke (KeyEvent.VK_S,InputEvent.CTRL_MASK));

exitItem.setMnemonic('Q');

exitItem.setAccelerator (KeyStroke.getKeyStroke (KeyEvent.VK_E,InputEvent.CTRL_MASK));

//将菜单项saveAsItem加入到菜单组fileMenu中

fileMenu.add (saveAsItem);

//在菜单项中添加隔离

fileMenu.addSeparator ();

fileMenu.add (exitItem);

backItem.setMnemonic ('B');

backItem.setAccelerator (KeyStroke.getKeyStroke (KeyEvent.VK_Z,InputEvent.CTRL_MASK));

forwardItem.setMnemonic('D');

forwardItem.setAccelerator (KeyStroke.getKeyStroke (KeyEvent.VK_P,InputEvent.CTRL_MASK));

editMenu.setMnemonic('E');

editMenu.add (backItem);

editMenu.add (forwardItem);

viewMenu.setMnemonic('V');

fullscreenItem.setMnemonic('U');

fullscreenItem.setAccelerator (KeyStroke.getKeyStroke (KeyEvent.VK_U,InputEvent.CTRL_MASK));

sourceItem.setMnemonic('C');

sourceItem.setAccelerator (KeyStroke.getKeyStroke (KeyEvent.VK_C,InputEvent.CTRL_MASK));

reloadItem.setMnemonic('R');

reloadItem.setAccelerator (KeyStroke.getKeyStroke (KeyEvent.VK_R,InputEvent.CTRL_MASK));

Container contentPane=getContentPane ();

//设置大小

scrollPane.setPreferredSize(new Dimension(100,500));

contentPane.add (scrollPane, BorderLayout.SOUTH);

//在工具栏中添加按钮组件

toolBar.add(picSave);

toolBar.addSeparator();

toolBar.add(picBack);

toolBar.add(picForward);

toolBar.addSeparator();

toolBar.add(picView);

toolBar.addSeparator();

toolBar.add(picExit);

contentPane.add (bar,BorderLayout.CENTER);

contentPane.add(toolBar,BorderLayout.NORTH);

viewMenu.add (fullscreenItem);

viewMenu.add (sourceItem);

viewMenu.addSeparator ();

viewMenu.add (reloadItem);

jMenuBar1.add (fileMenu);

jMenuBar1.add (editMenu);

jMenuBar1.add (viewMenu);

setJMenuBar (jMenuBar1);

adress.add (label);

adress.add (jurl);

adress.add (button);

bar.add (adress);

//为组件添加事件监听

saveAsItem.addActionListener(this);

picSave.addActionListener(this);

exitItem.addActionListener(this);

picExit.addActionListener(this);

backItem.addActionListener(this);

picBack.addActionListener(this);

forwardItem.addActionListener(this);

picForward.addActionListener(this);

fullscreenItem.addActionListener(this);

sourceItem.addActionListener(this);

picView.addActionListener(this);

reloadItem.addActionListener(this);

button.addActionListener(this);

jurl.addActionListener(this);

}

/**

**实现监听器接口的actionPerformed函数

*/

public void actionPerformed(ActionEvent e) {

String url = "";

//点击转向按钮

if (e.getSource() == button){

//获得地址栏的内容

url=jurl.getText ();

//url不为“”，并且以“http://”开头

if(url.length ()0url.startsWith ("http://")){

try {

//JEditorPane组件显示url的内容链接

jEditorPane1.setPage (url);

//将url的内容添加到ArrayList对象history中

history.add(url);

//historyIndex的数值设为history对象的长度-1

historyIndex=history.size()-1;

//重新布局

jEditorPane1.setEditable(false); //add by copy editor :)

jEditorPane1.revalidate ();

}

catch(Exception ex) {

//如果链接显示失败，则弹出选择对话框“无法打开该搜索页”

JOptionPane.showMessageDialog (WebBrowser.this,"无法打开该搜索页","网页浏览器",JOptionPane.ERROR_MESSAGE);

}

}

//url不为“”，并且不以“http://”开头

else if(url.length ()0!url.startsWith ("http://")) {

//在url前面添加“http://”

url="http://"+url;

try {

jEditorPane1.setPage (url );

history.add(url);

historyIndex=history.size()-1;

jEditorPane1.setEditable(false); //add by copy editor :)

jEditorPane1.revalidate ();

}

catch(Exception ex) {

JOptionPane.showMessageDialog (WebBrowser.this,"无法打开该搜索页","网页浏览器",JOptionPane.ERROR_MESSAGE);

}

}

//没有输入url，即url为空

else if(url.length ()==0){

JOptionPane.showMessageDialog (WebBrowser.this,"请输入链接地址","网页浏览器",JOptionPane.ERROR_MESSAGE);

}

}

//输入地址后点击回车

else if (e.getSource() == jurl){

url=jurl.getText ();

if(url.length ()0url.startsWith ("http://")) {

try {

jEditorPane1.setPage (url);

history.add(url);

historyIndex=history.size()-1;

jEditorPane1.setEditable(false); //add by copy editor :)

jEditorPane1.revalidate ();

jurl.setMaximumSize (jurl.getPreferredSize ());

}

catch(Exception ex) {

JOptionPane.showMessageDialog (WebBrowser.this,"无法打开该搜索页","网页浏览器",JOptionPane.ERROR_MESSAGE);

}

}

else if(url.length ()0!url.startsWith ("http://")) {

url="http://"+url;

try {

jEditorPane1.setPage (url );

history.add(url);

historyIndex=history.size()-1;

jEditorPane1.setEditable(false); //add by copy editor :)

jEditorPane1.revalidate ();

}

catch(Exception ex) {

JOptionPane.showMessageDialog (WebBrowser.this,"无法打开该搜索页","网页浏览器",JOptionPane.ERROR_MESSAGE);

}

}

else if(url.length ()==0){

JOptionPane.showMessageDialog (WebBrowser.this,"请输入链接地址","网页浏览器",JOptionPane.ERROR_MESSAGE);

}

}

//另存为...

else if (e.getSource() == picSave||e.getSource() == saveAsItem){

url = jurl.getText ().toString ().trim();

if(url.length ()0!url.startsWith ("http://")) {

url="http://"+url;

}

if(!url.equals ("")) {

//保存文件

saveFile(url);

}

else {

JOptionPane.showMessageDialog (WebBrowser.this,"请输入链接地址","网页浏览器",JOptionPane.ERROR_MESSAGE);

}

}

//退出

else if (e.getSource() == exitItem ||e.getSource() == picExit){

System.exit(0);

}

//后退

else if (e.getSource() == backItem ||e.getSource() == picBack){

historyIndex--;

if(historyIndex 0)

historyIndex = 0;

url = jurl.getText();

try{

//获得history对象中本地址之前访问的地址

url = (String)history.get(historyIndex);

jEditorPane1.setPage(url);

jurl.setText(url.toString());

jEditorPane1.setEditable(false); //add by copy editor :)

jEditorPane1.revalidate ();

}

catch(Exception ex){

}

}

//前进

else if (e.getSource() == forwardItem ||e.getSource() == picForward){

historyIndex++;

if(historyIndex = history.size())

historyIndex = history.size()-1;

url = jurl.getText();

try{

//获得history对象中本地址之后访问的地址

url = (String)history.get(historyIndex);

jEditorPane1.setPage(url);

jurl.setText(url.toString());

jEditorPane1.setEditable(false); //add by copy editor :)

jEditorPane1.revalidate ();

}

catch(Exception ex){

}

}

//全屏

else if (e.getSource() == fullscreenItem){

boolean add_button2=true;

//获得屏幕大小

Dimension size = Toolkit.getDefaultToolkit().getScreenSize();

Container content = window.getContentPane();

content.add (bar,"North");

content.add (scrollPane,"Center");

//button2为点击“全屏”后的还原按钮

if(add_button2==true) {

bar.add (button2);

}

//为button2添加事件

button2.addActionListener (new ActionListener () {

public void actionPerformed (ActionEvent evt) {

WebBrowser.this.setEnabled (true);

window.remove (bar);

window.remove (toolBar);

window.remove (scrollPane);

window.setVisible (false);

scrollPane.setPreferredSize (new Dimension (100,500));

getContentPane ().add (scrollPane,BorderLayout.SOUTH);

getContentPane ().add (bar,BorderLayout.CENTER);

getContentPane ().add (toolBar,BorderLayout.NORTH);

bar.remove (button2);

pack();

}

});

window.setSize (size);

window.setVisible (true);

}

//查看源文件

else if (e.getSource() == sourceItem ||e.getSource() == picView){

url = jurl.getText ().toString ().trim ();

if(url.length ()0!url.startsWith ("http://")) {

url="http://"+url;

}

if( !url.equals ("")) {

//根据url，获得源代码

getHtmlSource (url);

//生成显示源代码的框架对象

ViewSourceFrame vsframe = new ViewSourceFrame (htmlSource);

vsframe.setBounds (0,0,800,500);

vsframe.setVisible(true);

}

else {

JOptionPane.showMessageDialog (WebBrowser.this,"请输入链接地址","网页浏览器",JOptionPane.ERROR_MESSAGE);

}

}

//刷新

else if (e.getSource() == reloadItem){

url=jurl.getText ();

if(url.length ()0url.startsWith ("http://")) {

try {

jEditorPane1.setPage (url);

jEditorPane1.setEditable(false); //add by copy editor :)

jEditorPane1.revalidate ();

}

catch(Exception ex) {

}

}

else if(url.length ()0!url.startsWith ("http://")) {

url="http://"+url;

try {

jEditorPane1.setPage (url );

jEditorPane1.setEditable(false); //add by copy editor :)

jEditorPane1.revalidate ();

}

catch(Exception ex) {

}

}

}

}

/*

**保存文件

*/

void saveFile (final String url) {

final String linesep = System.getProperty ("line.separator");

chooser1.setCurrentDirectory (new File ("."));

chooser1.setDialogType (JFileChooser.SAVE_DIALOG);

chooser1.setDialogTitle ("另存为...");

if(chooser1.showSaveDialog (this) != JFileChooser.APPROVE_OPTION)

return;

this.repaint ();

Thread thread = new Thread () {

public void run () {

try {

java.net.URL source = new URL (url);

InputStream in = new BufferedInputStream (source.openStream ());

BufferedReader br=new BufferedReader (new InputStreamReader (in));

File fileName = chooser1.getSelectedFile ();

FileWriter out = new FileWriter (fileName);

BufferedWriter bw = new BufferedWriter (out);

String line;

while((line = br.readLine ()) != null) {

bw.write (line);

bw.newLine ();

}

bw.flush ();

bw.close ();

out.close ();

String dMessage = url + " 已经被保存至"+ linesep +fileName.getAbsolutePath ();

String dTitle = "另存为";

int dType = JOptionPane.INFORMATION_MESSAGE;

JOptionPane.showMessageDialog ((Component) null,dMessage,dTitle,dType);

}

catch(java.net.MalformedURLException muex) {

JOptionPane.showMessageDialog ((Component)null,muex.toString (),"网页浏览器",JOptionPane.ERROR_MESSAGE);

}

catch(Exception ex) {

JOptionPane.showMessageDialog ((Component) null,ex.toString (),"网页浏览器",JOptionPane.ERROR_MESSAGE);

}

}

};

thread.start ();

}

/*

**获得源代码

*/

void getHtmlSource (String url) {

String linesep,htmlLine;

linesep = System.getProperty ("line.separator");

htmlSource ="";

try {

java.net.URL source = new URL (url);

InputStream in = new BufferedInputStream (source.openStream ());

BufferedReader br = new BufferedReader ( new InputStreamReader (in));

while((htmlLine = br.readLine ())!=null) {

htmlSource = htmlSource +htmlLine+linesep;

}

}

catch(java.net.MalformedURLException muex) {

JOptionPane.showMessageDialog (WebBrowser.this,muex.toString (),"网页浏览器",JOptionPane.ERROR_MESSAGE);

}

catch(Exception e) {

JOptionPane.showMessageDialog (WebBrowser.this,e.toString (),"网页浏览器",JOptionPane.ERROR_MESSAGE);

}

}

/**

**实现监听器接口的hyperlinkUpdate函数

*/

public void hyperlinkUpdate (HyperlinkEvent e) {

/* if(e.getEventType () == HyperlinkEvent.EventType.ACTIVATED) {

String url = jurl.getText();

if(url.length ()0url.startsWith ("http://")) {

try {

jEditorPane1.setPage (url);

jEditorPane1.revalidate ();

}

catch(Exception ex) {

}

}

else if(url.length ()0!url.startsWith ("http://")) {

url="http://"+url;

try {

jEditorPane1.setPage (url );

jEditorPane1.revalidate ();

}

catch(Exception ex) {

}

}

}

*/

// Revised by copy editor :) Now with new code to help hyperlink

try {

if (e.getEventType() == HyperlinkEvent.EventType.ACTIVATED)

jEditorPane1.setPage(e.getURL());

} catch (Exception ex) {

ex.printStackTrace(System.err);

}

}

/*生成一个IE对象*/

public static void main (String [] args){

try{

UIManager.setLookAndFeel(

UIManager.getCrossPlatformLookAndFeelClassName()

);

}

catch(Exception e){

}

WebBrowser webBrowser = new WebBrowser ();

webBrowser.pack();

webBrowser.setVisible(true);

}

}

用Java编写个浏览器，输入字符串以及需要查到的字符

Scanner input = new Scanner(System.in);

System.out.print("请输入一段字符：");

String s = input.next();

System.out.println("请输入要查询的字符串:");

String a = input.next();

int index = s.indexOf(a);

List ls = new ArrayList();

while (index = 0)

{

ls.add(index);

index = s.indexOf(a, index + 1);

}

for(Object i : ls)

{

System.out.print(i + " ");

}

如何用java编写浏览器

正好我前几天做了一个浏览器实例，挺容易的其实。就用到了：

1.awtswing编界面和响应。

2.网页显示区域是用JEditPane来显示的。通过在上方设置一个JTextField输入url以后，这里获得url，然后直接setPage到url就行了。也不是太难。

其他没啥如果楼主要代码的话留下邮箱。

楼主编浏览器大概需要以下知识：

1.javase基础

2.http协议大致传输过程

3.基础的awtswing，以及窗口响应布局等

4.浅显的多线程知识

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