获取网页内容，并保存到一个html文件中。

		URL Baidu;
		try {
			Baidu = new URL("http://www.baidu.com");
			try {
				//把输入流装到缓冲流中
				BufferedReader in = new BufferedReader(new InputStreamReader(Baidu.openStream()));
				//输出到文件中
				BufferedWriter out = new BufferedWriter(new FileWriter("F:\\baidu.html",true));
				String input;
				while((input=in.readLine())!=null) {
					out.write(input);
				}
				out.close();
				in.close();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		} catch (MalformedURLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}