java获取网站内容

package laa;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;


public class HtmlInfo {

/**
* @author LIANAN
* @param url
* @param encoding
* @return 
* @throws Exception
*/
public static String getHtml(String url,String encoding)throws Exception{

StringBuilder sb=new StringBuilder();

URL u=new URL(url);

HttpURLConnection con = (HttpURLConnection)u.openConnection();

//设置

con.setRequestProperty("User-Agent", "MSIE 7.0");

BufferedReader br=new BufferedReader(new InputStreamReader(con.getInputStream(),encoding));

String s=null;

while((s=br.readLine())!=null){

sb.append(s);

sb.append("\r\n");

}

con.disconnect();

return sb.toString();

}
public static void main(String[] arg0)throws Exception{

System.out.println(getHtml("http://www.baidu.com","gbk"));

}

}