JSP "Grasping" the Code of the Web page program

js| Program | Web page JSP "grasping" the Code of the Web page is as follows:

<%@ page contenttype= "text/html;charset=gb2312"%>
<%
String Scurrentline;
String stotalstring;
Scurrentline= "";
Stotalstring= "";
Java.io.InputStream L_urlstream;
Java.net.URL L_url = new Java.net.URL ("http://www.163.net/");
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));
while ((Scurrentline = L_reader.readline ())!= null)
{
Stotalstring+=scurrentline;
}
Out.println (stotalstring);
%>
Postscript

Although the code is relatively simple, however, I think that according to this, you can achieve the "web crawler" function, such as from the page to find an HREF connection, and then get the connection, and then "catch", do not stop (of course, can limit the number of layers), so that the "web search" function can be achieved.