如何访问http，并打印出内容，例如：java MyHttp www.sina.com.cn(MyHttp为程序)读取新浪首页的内容。

import java.net.URL;
import java.net.URLConnection;
import java.io.*

public class ConnectionDemo {
    public static void main(String args[]) throws Exception {
        URL url = new URL("http://www.sina.com.cn");
        URLConnection conn = url.openConnection();
        InputStream input = conn.getInputStream();
        BufferedReader it = new BufferedReader(new InputStreamReader(input));
        String str;
        while((str =it.readLine())!= null){
          System.out.println(str);
        }
        it.close();
        input.close();
    }

}

java.net.URL l_url = new java.net.URL(/tech-qa-java/sURL/index.html);
                    java.net.HttpURLConnection l_connection = (java.net.HttpURLConnection) l_url.openConnection();
                    l_connection.connect();
                    l_urlStream = l_connection.getInputStream();
                    java.io.BufferedReader l_reader = new java.io.BufferedReader(new java.io.InputStreamReader(l_urlStream));
                    String sCurrentLine = "";
                    String sTotalString = "";
                    while ((sCurrentLine = l_reader.readLine()) != null)

                    {
                        sTotalString+=sCurrentLine;
                    }

sURL ="www.sina.com.cn"
sTotalString
就是所有返回内容