getwebpagep.java

来自「java3D game engine design of the source 」· Java 代码 · 共 67 行

// GetWebPageP.java
// Andrew Davison, June 2003, [e-mail]

/* Retrieve a Web page using URL and URLConnection objects.

  Sets hardwired proxy and authorization details.
  Uses David W. Croft's Base64Converter class.

  Usage:
      java GetWebPageP <password> <url> 
*/


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

public class GetWebPageP 
{
  private static final String LOGIN = "ad";  // modify this

  public static void main(String args[]) throws IOException 
  {
     if (args.length != 2) {
       System.out.println("usage:  java GetWebPageP <password> <url>");
       System.exit(0);
     }

     // set the properties used for proxy support
     Properties props = System.getProperties();
     props.put("proxySet", "true");
     props.put("proxyHost", "cache.psu.ac.th");
     props.put("proxyPort", "8080");
     System.setProperties(props);

     // create a URL and URLConnection
     URL url  = new URL(args[1]);   // URL string
     URLConnection conn = url.openConnection();

     // encode the "login:password" string
     Base64Converter bc = new Base64Converter();
     String encoding = bc.encode( LOGIN + ":" + args[0] );

     // send the authorization
     conn.setRequestProperty("Proxy-Authorization", "Basic " + encoding);

	 BufferedReader br = new BufferedReader ( 
	          new InputStreamReader ( conn.getInputStream() ));

     // print first ten lines of contents
     int numLine = 0;
     String line;
     while ( ((line = br.readLine()) != null) && (numLine <= 10) ) {
       System.out.println(line);
       numLine++;
     }
     if (line != null)
       System.out.println(". . .");

     br.close();
     System.exit(0);
  } // end of main()

 
} // end GetWebPageP class