java中根据url抓取html页面内容的方法

siye1982

import java.io.BufferedReader;import java.io.InputStreamReader;import java.net.HttpURLConnection;import java.net.URL;public class URLUtil {  public static String getHtml(String urlString) {    try {      StringBuffer html = new StringBuffer();      URL url = new URL(urlString);      HttpURLConnection conn = (HttpURLConnection) url.openConnection();      InputStreamReader isr = new InputStreamReader(conn.getInputStream());      BufferedReader br = new BufferedReader(isr);      String temp;      while ((temp = br.readLine()) != null) {        html.append(temp).append("\n");      }      br.close();      isr.close();      return html.toString();    } catch (Exception e) {      e.printStackTrace();      return null;    }  }  public static void main(String[] args) {    System.out.println(URLUtil.getHtml("http://www.163.com"));  }}