printurlpage.java

来自「java 完全探索的随书源码」· Java 代码 · 共 61 行

import java.net.*;
import java.io.*;

public class PrintURLPage
{
  // Default Constructor
  public PrintURLPage()
  {
    super();
  }

  // Read the HTML page
  public void printHTMLPage( String urlStr )
  {
    URL url = null;
    BufferedReader reader = null;
    String data = null;

    try
    {
      // Create the URL object
      url = new URL( urlStr );
      // Decorate the input stream with something easier to use
      reader = new BufferedReader( new InputStreamReader(url.openStream()) );

      // Keep reading lines until there are no more to read
      while( (data = reader.readLine()) != null )
      {
        // Just write out the text to the console
        System.out.println( data );
      }
    }
    catch( MalformedURLException ex )
    {
      ex.printStackTrace();
    }
    catch( IOException ex )
    {
      ex.printStackTrace();
    }
  }

  // Start the example
  public static void main( String args[] )
  {
    if ( args.length == 0 )
    {
      System.out.println( "Usage: java PrintURLPage http://<url>" );
      System.exit( 0 );
    }

    // Get the url passed in on the command line
    String url = args[0];

    PrintURLPage f = new PrintURLPage();

    // Get and print the url passed in
    f.printHTMLPage( url );
  }

}