public static String getHtmlByUrl(String url) throws IOException {

 URL htmlUrl = new URL(url);
 BufferedReader reader = new BufferedReader(new InputStreamReader(htmlUrl.openStream()));
 String temp = "";
 StringBuffer sb = new StringBuffer();
 while((temp = reader.readLine())!= null) {
 sb.append(temp);
 }
 return sb.toString();
}

简单实现下， 抓取还得用框架