java做浏览器源码(Java开源代码)
本文目录一览:
- 1、用JAVA编写一个简单的浏览器程序
- 2、2) 如果需要你用java编程实现一个浏览器软件,你需要精通哪些技术?
- 3、求一个java图片浏览器的源代码,拜托大家了!!!
- 4、用JAVA编写的一个简易浏览器。
- 5、如何用java编写浏览器
- 6、用java做一个简易浏览器
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();
}
}
2) 如果需要你用java编程实现一个浏览器软件,你需要精通哪些技术?
GUI图形 网络编程 多线程 IO流 编码 事件处理等
做一个简单的浏览器不需要“精通”的 java swing组件默认有支持HTML解析 所以说HTML你不用管
如果你想做个没有任何样式和特效的浏览器,只要一会时间就可以完成。
难的地方主要是与CSS解析器和JS解析器的融合 CSS、JS解析的数据处理以及做出相应的显示是最难的
只解析HTML的“浏览器”源码,网上给你K来的:
package web.action;
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import javax.swing.JButton;
import javax.swing.JEditorPane;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.event.HyperlinkEvent;
import javax.swing.event.HyperlinkListener;
@SuppressWarnings("serial")
public class temp extends JFrame {
private JLabel jlAddress, jlInfo;
private JTextField jtfAddress;
private JEditorPane jtpShow;
private JPanel panel;
private JButton btnGO;
private JButton btnBack;
private JButton btnForward;
private JButton btnStop;
private JButton btnRefresh;
private URL address;
private ListString urls = new ArrayListString();
private int nowURL = 0;
public static void main(String[] args) {
new temp();
}
temp() {
jlAddress = new JLabel("地址");
jlInfo = new JLabel();
jtpShow = new JEditorPane();
panel = new JPanel();
jtfAddress = new JTextField(20);
btnGO = new JButton("转到");
this.btnBack = new JButton("后退");
this.btnForward = new JButton("前进");
this.btnRefresh = new JButton("刷新");
this.btnStop = new JButton("停止");
this.btnBack.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
try {
if (nowURL = 1) {
JOptionPane.showMessageDialog(temp.this, "已经到头啦");
} else {
String str = urls.get(nowURL - 2);
address = new URL(str);
jtfAddress.setText(str);
nowURL--;
jtpShow.setPage(address);
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
});
this.btnForward.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
try {
if (nowURL == urls.size() || nowURL == 0) {
JOptionPane.showMessageDialog(temp.this, "已经到头啦");
} else {
String str = urls.get(nowURL);
address = new URL(str);
nowURL++;
jtfAddress.setText(str);
jtpShow.setPage(address);
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
});
this.btnRefresh.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
try {
String str = jtfAddress.getText();
if (str == null || str.equals("")) {
JOptionPane.showMessageDialog(temp.this, "没有什么可刷的");
} else {
if (!str.startsWith("http://")) {
str = "http://" + str;
}
address = new URL(str);
jtpShow.setPage(address);
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
});
add(panel, BorderLayout.NORTH);
add(jtpShow, BorderLayout.CENTER);
add(jlInfo, BorderLayout.SOUTH);
panel.add(this.btnBack);
panel.add(this.btnForward);
panel.add(this.btnStop);
panel.add(this.btnRefresh);
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;
}
urls.add(str);
nowURL++;
jlInfo.setText("连接中...");
address = new URL(str);
jtpShow.setPage(address);
jlInfo.setText("完成");
} catch (MalformedURLException e1) {
e1.printStackTrace();
} catch (IOException e2) {
e2.printStackTrace();
}
}
}
class MyHyperlinkListener implements HyperlinkListener {
public void hyperlinkUpdate(HyperlinkEvent e) {
if (e.getEventType() == HyperlinkEvent.EventType.ACTIVATED) {
JEditorPane pane = (JEditorPane) e.getSource();
try {// 主要是这里..在网页里点击链接也要加到历史记录里面去..
URL url = e.getURL();
String str = url.toString();
urls.add(str);
jtfAddress.setText(str);
nowURL++;
pane.setPage(url);
} catch (IOException e1) {
e1.printStackTrace();
}
}
}
}
}
求一个java图片浏览器的源代码,拜托大家了!!!
给你代码,看一下注释,为是防止左右移动时鼠标是水平的移动,所以加了一个范轩,
在二十个象素内,认为是水平的。
你看一下吧
还好你这个是鼠标按住移动,如果只是鼠移动就麻烦了
----------------------------------------
import java.awt.Graphics;
import java.awt.MouseInfo;
import java.awt.Point;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.io.File;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.filechooser.FileNameExtensionFilter;
public class App extends JFrame implements MouseListener, ActionListener {
int x = 0;
int y = 0;
File[] selectedFiles = null;
int fileIndex = 0;
int width = 200;
int height = 200;
public App() {
setDefaultCloseOperation(EXIT_ON_CLOSE);
setLocationRelativeTo(null);
setSize(400, 300);
setResizable(false);
getContentPane().setLayout(null);
JPanel panel = new ImagePanel();
panel.setBounds(12, 40, 370, 218);
getContentPane().add(panel);
addMouseListener(this);
JButton btnBrowse = new JButton("Browse");
btnBrowse.addActionListener(this);
btnBrowse.setBounds(12, 9, 91, 21);
getContentPane().add(btnBrowse);
setVisible(true);
}
public static void main(String[] args) {
new App();
}
public void actionPerformed(ActionEvent e) {
JFileChooser chooser = new JFileChooser();
chooser.setMultiSelectionEnabled(true);
FileNameExtensionFilter filter = new FileNameExtensionFilter(
"JPG GIF Images", "jpg", "gif");
// 设置文件类型
chooser.setFileFilter(filter);
// 打开选择器面板
int returnVal = chooser.showOpenDialog(this);
if (returnVal == JFileChooser.APPROVE_OPTION) {
selectedFiles = chooser.getSelectedFiles();
repaint();
}
}
public void mouseClicked(MouseEvent e) {
}
public void mouseEntered(MouseEvent e) {
}
public void mouseExited(MouseEvent e) {
}
public void mousePressed(MouseEvent e) {
Point point = MouseInfo.getPointerInfo().getLocation();
x = point.x;
y = point.y;
}
public void mouseReleased(MouseEvent e) {
Point point = MouseInfo.getPointerInfo().getLocation();
int thisX = point.x;
int thisY = point.y;
System.out.println("thisX=" + thisX + " " + "thisY=" + thisY);
if ((y - thisY 20 y - thisY 0)
|| (y - thisY 0 y - thisY -20)) {
// Y 在20范围内移动认为是水平移动
if (x thisX) {
// right
if (selectedFiles != null
fileIndex selectedFiles.length - 1) {
fileIndex++;
}
} else {
// left
if (selectedFiles != null fileIndex 0) {
fileIndex--;
}
}
} else {
if (x thisX) {
// 右下
width += 20;
height += 20;
} else {
// 左上
width -= 20;
height -= 20;
}
}
repaint();
}
class ImagePanel extends JPanel {
public void paint(Graphics g) {
super.paint(g);
if (selectedFiles != null) {
ImageIcon icon = new ImageIcon(selectedFiles[fileIndex]
.getPath());
g.drawImage(icon.getImage(), 0, 0, width, height, this);
}
}
}
}
用JAVA编写的一个简易浏览器。
import java.awt.*;
import java.awt.event.*;
import java.net.*;
import java.io.*;
import javax.swing.*;
import javax.swing.text.DefaultStyledDocument;
//HTTP连接与浏览
public class HTTPBrowser extends JFrame{
JTextField jtfAddress; //输入html文件地址或网址
JTextPane jtpShow; //显示页面
JTextArea jtaSource; //显示HTML源文件
public HTTPBrowser(){
super("HTTP连接与浏览"); //调用父类构造函数
jtfAddress=new JTextField(30); //实例化地址输入框
jtpShow=new JTextPane(); //实例化显示内容框
jtaSource=new JTextArea();
JPanel p1=new JPanel(); //实例化面板
JSplitPane spane=new JSplitPane(JSplitPane.VERTICAL_SPLIT); //实例化分隔面板
p1.add(new JLabel("地址")); //增加组件到面板上
p1.add(jtfAddress);
spane.add(new JScrollPane(jtpShow),JSplitPane.TOP);
spane.add(new JScrollPane(jtaSource),JSplitPane.BOTTOM);
spane.setDividerLocation(130); //设置分隔位置
spane.setDividerSize(2); //设置分隔栏尺寸
Container container=getContentPane(); //得到容器
container.add(p1,BorderLayout.NORTH); //增加组件到容器上
container.add(spane,BorderLayout.CENTER);
jtfAddress.addActionListener(new ShowHTMLListener()); //输入地址文本域事件处理
setSize(380,300); //设置窗口尺寸
setVisible(true); //设置窗口可视
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //关闭窗口时退出程序
}
class ShowHTMLListener implements ActionListener {
public void actionPerformed(ActionEvent event) {
try{
URL address=new URL(jtfAddress.getText()); //得到HTML页面的URL地址
jtpShow.setContentType("text/html"); //设置内容格式
jtpShow.setPage(address); //设置显示页面
BufferedReader in= new BufferedReader(new InputStreamReader(address.openStream())); //获取输入流
String line;
StringBuffer content = new StringBuffer(); //文件内容
while ((line = in.readLine()) != null) { //读取文件
content.append(line+"\n");
}
jtaSource.setText(new String(content)); //设置显示文本
in.close(); //关闭输入流
}
catch (Exception ex){
ex.printStackTrace(); //输出出错信息
}
}
}
public static void main(String[] args){
new HTTPBrowser();
}
}
这还有一个
import java.awt.*;
import java.awt.event.*;
import java.net.URL;
import javax.swing.*;
//html浏览器
public class HTTPBrowserDemo extends JFrame{
JTextField jtfAddress; //输入html文件地址或网址
JButton jbGo; //转到文件按钮
JTextPane jtpShow; //显示文件
JLabel jlInfo; //提示信息
public HTTPBrowserDemo(){
super("html浏览器"); //调用父类构造函数
jtfAddress=new JTextField(20); //实例化地址输入框
jbGo=new JButton("转到"); //实例化转向按钮
jtpShow=new JTextPane(); //实例化显示内容框
jlInfo=new JLabel(); //实例化信息提示标签
JPanel panel=new JPanel(); //实例化面板
panel.add(new JLabel("地址")); //增加组件到面板上
panel.add(jtfAddress);
panel.add(jbGo);
JScrollPane jsp=new JScrollPane(jtpShow); //实例化滚动窗体
Container container=getContentPane(); //得到容器
container.add(panel,BorderLayout.NORTH); //增加组件到容器上
container.add(jsp,BorderLayout.CENTER);
container.add(jlInfo,BorderLayout.SOUTH);
jbGo.addActionListener(new ShowHTMLListener()); //事件处理,发生按钮点击时显示页面内容
jtfAddress.addActionListener(new ShowHTMLListener());
setSize(350,280); //设置窗口尺寸
setVisible(true); //设置窗口可视
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //关闭窗口时退出程序
}
class ShowHTMLListener implements ActionListener { //显示页面内容事件处理
public void actionPerformed(ActionEvent event) {
try{
jlInfo.setText("正在连接..."); //显示提示信息
URL address=new URL(jtfAddress.getText()); //得到HTML页面的URL地址
jtpShow.setPage(address); //设置显示页面
jlInfo.setText("完成");
}
catch (Exception ex){
jlInfo.setText("连接出错");
ex.printStackTrace(); //输出出错信息
}
}
}
public static void main(String[] args){
new HTTPBrowserDemo();
}
}
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
用java做一个简易浏览器
import java.awt.*;
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();
}
}
}
}
}