通过url地址抓取网页html代码

通过url地址抓取网页html代码

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.fastunit.com " ));
  }
}