down.java

一个网络spider

package all;
import java.net.*;
import java.io.*;
public class Down
    {
        public Down(String urlstring ,String Filename)
        {
            URL url;
            InputStream in;
            OutputStream out;
            try {
                url = new URL(urlstring);
                in = url.openStream();
                out = new FileOutputStream(Filename);
                int c;
                while ((c = in.read()) > -1) {
                    out.write(c);
                    System.out.write(c);
                }
                in.close();
            } catch (IOException e) {}
        }
    }