urlparser.java

来自「Java网络编程与分布式计算, 主要分析java网络各方面的编程, 提供许多实用」· Java 代码 · 共 40 行

import java.net.*;

// Chapter 9, Listing 1
public class URLParser 
{
	public static void main(String args[])
	{
		int argc = args.length;

		// Check for valid number of parameters
		if (argc != 1)
		{
			System.out.println ("Syntax :");
			System.out.println ("java URLParser url");
			return;
		}

		// Catch any thrown exceptions
		try
		{
			// Create an instance of java.net.URL
			java.net.URL myURL = new URL ( args[0] );

			System.out.println ("Protocol : " + myURL.getProtocol() );
			System.out.println ("Hostname : " + myURL.getHost() );
			System.out.println ("Port     : " + myURL.getPort() );
			System.out.println ("Filename : " + myURL.getFile() );
			System.out.println ("Reference: " + myURL.getRef() );
		}
		// MalformedURLException indicates parsing error
		catch (MalformedURLException mue)
		{
			System.err.println ("Unable to parse URL!");
			return;
		}
	}

}