JAVA中如何在给定一个URL的情况下，将一个网页文件保存到本地文件中？

Question

谢谢

Answer 1

try {
        // Create a URL for the desired page
            URL url = new URL("http://www.google.com");
            // Read all the text returned by the server
            BufferedReader in = new BufferedReader(new InputStreamReader(url.openStream()));
            String text="";
            String str;
            while ((str = in.readLine()) != null) {
                System.out.println(str);
                text+=str;
                // str is one line of text; readLine() strips the newline character(s)
            }
            in.close();
            File file = new File("out.txt");
            RandomAccessFile waf = new RandomAccessFile(file, "rw");
            waf.writeBytes(text);
            waf.close();
        } catch (MalformedURLException e) {
            System.out.println("MalformedURLException");
        } catch (IOException e) {
            e.printStackTrace();
            System.out.println("IOException");
        }

Answer 2

import java.net.URL;
import java.io.BufferedOutputStream;
import java.io.BufferedInputStream;
import java.io.OutputStream;
import java.io.FileOutputStream;
import java.io.File;/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2005</p>
 * <p>Company: </p>
 * @author not attributable
 * @version 1.0
 */public class PictureThief {
  public PictureThief() {
  }  public static void main(String[] args) {
    try {
      URL url = new URL(
          "http://www.donews.net/redtroy");
      java.io.BufferedInputStream bis = new BufferedInputStream(url.openStream());
      byte[] bytes = new byte[100];
      OutputStream bos = new FileOutputStream(new File("C:\\index_logo.gif"));
      int len;
      while ( (len = bis.read(bytes)) > 0) {
        bos.write(bytes, 0, len);
      }
      bis.close();
      bos.flush();
      bos.close();    }
    catch (Exception e) {
      e.printStackTrace();
    }
  }}

Answer 3

OutputStream bos = new FileOutputStream(new File("C:\\index_logo.gif"));
改成 OutputStream bos = new FileOutputStream(new File("C:\\index.htm"));
或 OutputStream bos = new FileOutputStream(new File("C:\\index.txt"));