挖金子---小爬虫

马萨玛索（http://www.masamaso.com/index.shtml）每天10点都会推出一折商品5件，就是秒购。男装质量还不错，所以就经常去抢，感觉手动太慢了，就写了一个小爬虫程序，让自己去爬，如果是金子页面（免费商品）就会自动打开，我就可以抢到了。和大家分享一下。这个应该不算广告吧，之所以给链接和网站名是想着便于各位感兴趣看官测试，如果管理员觉得不妥，请通知哈，我再修改，不要直接封我哈，谢了。

思路：
1. 把所有想要的商品的链接读到程序中。
2. 分别打开每一个链接读取源代码
3. 验证是否是金子商品（源代码中含有free_msg字符串）
4. 如果是金子就把该链接用IE打开

源代码：
读链接文件：

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.LinkedList;
import java.util.List;

/**
 * @author Administrator
 *
 */
public class FileReader {
	private String fileName;

	public FileReader() {
	}

	public FileReader(String fileName) {
		this.fileName = fileName;
	}

	/**
	 * 读取链接，返回一个List
	 * @return
	 */
	public List getLines() {
		BufferedReader reader = null;
		try {
			reader = new BufferedReader(new InputStreamReader(new FileInputStream(this.fileName)));
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		}

		List lines = new LinkedList();
		String line = null;
		try {
			while ( (line = reader.readLine()) != null) {
			    lines.add(line);
			}
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			try {
				reader.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}

		return lines;
	}
}

URL类：

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;

/**
 * @author Administrator
 *
 */
public class Url {
	private String url;

	public Url() {
	}

	public Url(String url) {
		this.url = url;
	}

	public String getUrl() {
		return url;
	}

	public void setUrl(String url) {
		this.url = url;
	}

	/**
	 * 获得链接
	 * @return
	 */
	public URLConnection getConnection() {
		URL httpUrl = null;
		try {
			httpUrl = new URL(url);
		} catch (MalformedURLException e) {
			e.printStackTrace();
		}

		URLConnection conn = null;

		if(httpUrl != null) {
			try {
				conn = httpUrl.openConnection();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}

		return conn;
	}

	/**
	 * 获得链接上的输出流
	 * @return
	 */
	public BufferedReader getReader() {
		URLConnection conn = getConnection();
		BufferedReader br = null;
		if(conn == null) {
			return null;
		}
		conn.setConnectTimeout(9000);
		try {
			conn.connect();
			br = new BufferedReader(new InputStreamReader(conn.getInputStream()));
		} catch (IOException e) {
			e.printStackTrace();
			return null;
		}

		return br;
	}

	/**
	 * 从输出流中一行一行读取文件，查看是否含有str字符串，有就返回真
	 * @param str
	 * @return
	 */
	public boolean isExist(String str) {
		BufferedReader bis = getReader();
		boolean exist = false;

		String line = null;
		try {
			while ( (line = bis.readLine()) != null) {
			    exist = line.contains(str);
			    if(exist) {
			    	break;
			    }
			}
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			try {
				bis.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		return exist;
	}
}

Digger类:

import java.io.IOException;
import java.util.List;

/**
 * @author Administrator
 *
 */
public class Digger extends Thread{
	private Url url;

	public Digger() {
		super();
	}

	public Digger(Url url) {
		this.url = url;
	}

	/**
	 * main方法，把配置信息（链接）读入程序，并为每一个链接开启一个线程
	 * @param args
	 * @throws IOException
	 */
	public static void main(String[] args) throws IOException {
		FileReader reader = new FileReader("F:/myworkspace/workspace/diggold/src/url.txt");
		List urls = reader.getLines();

		for (String string : urls) {
			Url url = new Url(string);
			Digger digger = new Digger(url);
			digger.start();
		}
//		Runtime.getRuntime().exec("C:/Program   Files/Internet   Explorer/iexplore.exe   http://www.masamaso.com/index.shtml");
	}

	/**
	 * 查看该链接是否存在free_msg字段，存在即为金子 用IE打开该链接
	 */
	@Override
	public void run() {
		if(url.isExist("free_msg")) {
			try {
				Runtime.getRuntime().exec("C:/Program   Files/Internet   Explorer/iexplore.exe   " + url.getUrl());
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		System.out.println(url.getUrl() + "END!");
	}
}

url.txt配置文件

http://www.masamaso.com/goods.php?id=3128
http://www.masamaso.com/goods.php?id=3132
http://www.masamaso.com/goods.php?id=3120

写的比较简单，但是挺实用，各位看官莫笑话哈。