Java 通过URL获取网站Html源代码

package com.wsw.j2se.url;import java.io.ByteArrayOutputStream;import java.io.InputStream;import java.net.HttpURLConnection;import java.net.URL;/** * 通过网站域名URL获取该网站的源码 * @author Administrator * */public class HtmlRequest {    /** *//**    * @param args    * @throws MalformedURLException     */    public static void main(String[] args) throws Exception    {        URL url = new URL("http://www.ifeng.com");         String urlsource = getURLSource(url);        System.out.println(urlsource);    }        /** *//**     * 通过网站域名URL获取该网站的源码     * @param url     * @return String     * @throws Exception     */    public static String getURLSource(URL url) throws Exception    {        HttpURLConnection conn = (HttpURLConnection)url.openConnection();        conn.setRequestMethod("GET");        conn.setConnectTimeout(5 * 1000);        InputStream inStream =  conn.getInputStream();  //通过输入流获取html二进制数据        byte[] data = readInputStream(inStream);        //把二进制数据转化为byte字节数据        String htmlSource = new String(data);        return htmlSource;    }        /** *//**     * 把二进制流转化为byte字节数组     * @param instream     * @return byte[]     * @throws Exception     */    public static byte[] readInputStream(InputStream instream) throws Exception {        ByteArrayOutputStream outStream = new ByteArrayOutputStream();        byte[]  buffer = new byte[1204];        int len = 0;        while ((len = instream.read(buffer)) != -1){            outStream.write(buffer,0,len);        }        instream.close();        return outStream.toByteArray();             }}