ex03_ParsingHTML.java

package cse3040_22;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.URL;
import java.util.ArrayList;

public class ex03 {
	static ArrayList<String> lines = new ArrayList<String>();
	public static void main(String[] args) {
		URL url = null;
		BufferedReader input = null;
		String addr = "http://www.kyobobook.co.kr/bestSellerNew/bestseller.laf";
		String line = "";
		
		try {
			url = new URL(addr);
			input = new BufferedReader(new InputStreamReader(url.openStream()));
			while((line=input.readLine()) != null) {
				if(line.trim().length() > 0) lines.add(line);
			}
			input.close();
		}catch(Exception e){
			e.printStackTrace();
		}
		
		int rank = 1;
		int status = 0;
		for(int i=0;i<lines.size(); i++) {
			String l = lines.get(i);
			if(status == 0) {
				if(l.contains("div class=\"detail\"")) status = 1;
			} else if (status == 1) {
				if(l.contains("div class=\"title\"")) status = 2;
			} else if (status == 2) {
				if(l.contains("a href")) {
					int begin = l.indexOf("<strong>") + "<strong>".length();
					int end = l.indexOf("</strong>");
					System.out.println(rank + "��: "+ l.substring(begin,end));
					status = 0;
					rank++;
				}
			}
		}
	}
}