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java Web浏览器

chenmin200396

发贴: 1
积分: 0

于 2006-07-30 22:02

package HtmlBrowser;

import java.io.IOException;
import java.net.URL;
import javax.swing.*;
import javax.swing.text.Document;
import javax.swing.text.JTextComponent;
import java.awt.*;
import java.awt.event.*;
import javax.swing.event.*;

public class HtmlBrowser extends JFrame {
  JPanel contentPane;                  // 包含整个框架的容器
  BorderLayout borderLayoutAll = new BorderLayout();
  JLabel jLabelPrompt = new JLabel();          // 状态提示框
  JPanel jPanelMain = new JPanel();          // 包含URL编辑框和JEditorPane的容器
  BorderLayout borderLayoutMain = new BorderLayout();
  JTextField textFieldURL = new JTextField();      // URL输入框
  JEditorPane jEditorPane = new JEditorPane();    // 显示网页内容的容器

  // 构造函数
  public HtmlBrowser() {
  try {
    jbInit(); // 初始化并显示界面
  }
  catch(Exception e) {
    e.printStackTrace();
  }
  }

  // 初始化并显示界面
  private void jbInit() throws Exception {
   contentPane = (JPanel)getContentPane();
  contentPane.setLayout(borderLayoutAll);

   jPanelMain.setLayout(borderLayoutMain);
   jLabelPrompt.setText("请输入完整的URL");

   textFieldURL.setText("");
   textFieldURL.addActionListener(new java.awt.event.ActionListener() {
     public void actionPerformed(ActionEvent e) {
     textFieldURL_actionPerformed Envelope

;
     }
   });

   jEditorPane.setEditable(false);
   jEditorPane.addHyperlinkListener(new javax.swing.event.HyperlinkListener() {
     public void hyperlinkUpdate(HyperlinkEvent e) {
     jEditorPane_hyperlinkUpdate Envelope

;
     }
   });

   JScrollPane scrollPane = new JScrollPane();
   scrollPane.getViewport().add(jEditorPane);

   jPanelMain.add(textFieldURL, "North");
   jPanelMain.add(scrollPane, "Center");
   contentPane.add(jLabelPrompt, "North");
   contentPane.add(jPanelMain, "Center");

   enableEvents(AWTEvent.WINDOW_EVENT_MASK);
   this.setSize(new Dimension(800, 600));
   this.setTitle("网页浏览器");
   this.setVisible(true);
  }

  // 响应回车
  void textFieldURL_actionPerformed(ActionEvent e) {
   try {
      jEditorPane.setPage(textFieldURL.getText()); // 显示所给的URL内容
   }
   catch(IOException ex) {
      JOptionPane msg = new JOptionPane(); // 提示对话框
      JOptionPane.showMessageDialog(this, "不正确的URL地址："+textFieldURL.getText(), "不正确的输入！", 0);
   }
  }

  // 响应打开超级链接的消息
  void jEditorPane_hyperlinkUpdate(HyperlinkEvent e) {
  if(e.getEventType() == javax.swing.event.HyperlinkEvent.EventType.ACTIVATED) {
    try {
    URL url = e.getURL(); // 从消息中得到URL地址
    jEditorPane.setPage(url); // 显示该URL页面的内容
    textFieldURL.setText(url.toString()); // 显示URL地址
    }
    catch(IOException io){
    JOptionPane msg = new JOptionPane();
    JOptionPane.showMessageDialog(this, "无法打开链接！", "输入错误！", 0);
    }
  }
  }

  // 关闭窗口
  protected void processWindowEvent(WindowEvent e) {
  super.processWindowEvent Envelope

;
  if (e.getID() == WindowEvent.WINDOW_CLOSING) {
     System.exit(0);
  }
  }

  // 主函数
  public static void main(String[] args) {
  new HtmlBrowser();
  }
}

作者	Tip for Proxy used [Re:chenmin200396]
铁针发贴: 90 积分: 1	于 2006-08-01 11:11 If a proxy is used for http all requests in your company or local network, please set JVM parameters to use proxy before running this programme. -Dhttp.proxyHost=192.168.161.30 -Dhttp.proxyPort=8080

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