rssparser.java

一个JAVA做的FTP软件,带源码的,可以很好的进行二次开发,,并带有详细说明文件的

/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.

 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
package net.sf.jftp.tools;

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

public class RSSParser
{

URL file;
Vector titles = new Vector();
Vector descs = new Vector();
Vector links = new Vector();
Vector content = new Vector();

public RSSParser(URL f)
{
	file = f;
	parse();
}

private void parse()
{
	try
	{
	 DataInputStream in = new DataInputStream(
				new BufferedInputStream(file.openStream()));
	
	 String tmp, data = "";
				
	 while((tmp = in.readLine()) != null)
	 {
		data += tmp;
	 }
	
	add(data, content, "<title>", "</title>", "<description>", "</description>");
	add(data, titles, "<title>", "</title>", null, null);
	add(data, descs, "<description>", "</description>", null, null);
	add(data, links, "<link>", "</link>", null, null);
	
	}
	catch(Exception ex)
	{	
		ex.printStackTrace();
		return;
	}
}

private void add(String tmp, Vector target, String start, String end, String s2, String e2)
{
	if(s2 == null) 
	{	
		s2 = start;
		e2 = end;
	}
	
	int x = tmp.indexOf(start);
	int x2 = tmp.indexOf(s2);
	if(x < 0 && x2 < 0 || x < 0 && start.equals(s2)) return;
	
	if(x2 >= 0 && (x2 < x || x < 0)) 
	{
		x = x2;
		
		String t = start;
		start = s2;
		s2 = t;
		
		t = end;
		end = e2;
		e2 = t;
	}
	
	//System.out.println(tmp+":::"+x+":::"+x2);
	
	String value = tmp.substring(x+start.length(), tmp.indexOf(end));
	//System.out.println(value);
	
	target.add(value);
	
	tmp = tmp.substring(tmp.indexOf(end)+end.length());
	
	add(tmp, target, start, end, s2, e2);
}

}