Java示例下载网页(Java爬虫)

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;

import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

public class NewClass {
   public static void main(String[] args) {
      URL url;
      InputStream is = null;
      BufferedReader br;
      String line;

      try {
         url = new URL("https://www.codingdict.com/javaexamples/net_singleuser.htm");
         is = url.openStream();  // throws an IOException
         br = new BufferedReader(new InputStreamReader(is));

         while ((line = br.readLine()) != null) {
            System.out.println(line);
         }
      } catch (MalformedURLException mue) {
         mue.printStackTrace();
      } catch (IOException ioe) {
         ioe.printStackTrace();
      }

      finally {
         try {
            if (is != null) is.close();
         } catch (IOException ioe) {}
      }
   }
}