java - 如何在没有 JEditor 的情况下制作 Java Web 浏览器？

Question

我对 Java 还很陌生，对于我的类(class)，我们必须制作一个没有 JEditor 的 Web 浏览器。我只需要弄清楚当用户在 JTextField 中键入内容时如何使用套接字，然后使其访问该网站。另外，如果有影响的话，我只能使用 http://而不是 https://。任何事情都有帮助!谢谢!

    import javax.swing.*;
import java.awt.*;
import javax.swing.JButton;
import java.awt.GridLayout;
import java.awt.event.*;
import java.net.InetAddress;
import java.net.Socket;
import java.io.*;
public class WebPanel extends JPanel{
PrintWriter pw;
JTextField text = new JTextField("http://www.");

public WebPanel(){

 //trying to connect to the website 
    try {
     Socket s = new Socket(text, 80); //<<<---where the error is thrown
     OutputStream os = s.getOutputStream();
     pw = new PrintWriter(os, true);
     pw.flush();
  } catch (Exception e) {
    e.printStackTrace();
  }
    //set layout
    setLayout(null);

    ButtonHandler bh = new ButtonHandler();

   text.addActionListener(bh);
   text.setBounds(185, 10, 315, 25);
   add(text);

    //buttons 
    JButton goButton = new JButton("GO");
    goButton.addActionListener(bh);
    add(goButton);
    goButton.setBounds(500, 10, 75, 25);

    JButton backButton = new JButton("BACK");
    backButton.addActionListener(bh);
    add(backButton);
    backButton.setBounds(2, 10, 75, 25);
    JButton forwardButton = new JButton("FORWARD");
    forwardButton.addActionListener(bh);
    add(forwardButton);
    forwardButton.setBounds(80, 10, 100, 25);
    }
     public class ButtonHandler implements ActionListener{
        public void actionPerformed(ActionEvent e){
     //buttons for later
        if(e.getActionCommand().equals("GO")){
            String input = text.getText();
            System.out.println("You searched for: " + input);
            pw.flush();
        }else if(e.getActionCommand().equals("BACK")){
            System.out.println("you pressed the back button");
            pw.flush();
        } else if(e.getActionCommand().equals("FORWARD")){
            System.out.println("You pressed the forward button");
            pw.flush();
        }
    }

    }
    }
    }

Answer 1

对于简单的情况，您不需要使用套接字。您可以像这样使用 URL 类:

import java.io.InputStream;
import java.net.URL;
import org.apache.commons.io.IOUtils;

public class URLReadTest {
    public static void main(String[] args) throws Exception {
        InputStream is =  new URL("http://stackoverflow.com/").openStream();
        String html = IOUtils.toString(is);
        is.close();
        System.out.println(html);  // Parse HTML here
    }
}

然后您必须自己解析返回的 HTML，然后才能将其可视化。