Question

Java URL Class performance question

Asked by: eugie17

I have code that reads html page from internet using URL class and steream
the problem is with large pages like yahoo pages it hangs the application for 20 sec in loading

any solution to this problem???

URL url = new URL(surl);
               URLConnection conn = url.openConnection();
               conn.setRequestProperty("User-Agent",
                       "Mozilla/4.0 (compatible; MSIE 7.0b; Windows NT 6.0)");
               BufferedReader in = new BufferedReader(new InputStreamReader(conn.
                       getInputStream()));
 
               String str = "", result = "";
 
               while ((str = in.readLine()) != null) {
                   result += str.replaceAll("</?b>|</?strong>", "");
 
               }

                                  
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Asked On
2008-02-24 at 05:33:55ID23188353
Tags

Java

Topics

jEdit Editor

,

Enterprise Java Beans (EJB)

,

New to Java Programming

Participating Experts
1
Points
500
Comments
4

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Answers

 

by: qasitouchPosted on 2008-02-24 at 10:28:58ID: 20970741

              URL url;
            try {
                  
                  url = new URL("www.abc.com/op.htm");
                       URLConnection urlc = url.openConnection();

                        InputStream in = urlc.getInputStream();
                        int ch;

                        while ((ch = in.read()) != -1) {

                              resposne.append((char) ch);
                        }

                              response.setContentType("text/html");
                               
                              String finalResponse = resposne.toString();
                              /** To print the data on the client html browser */
                              out.println(finalResponse);
                              out.close();
}catch(Exception e)
{
e.printstacktrace();
}
--------------

where "response" is  HttpServletResponse response
hope this code will solve ur prblem.

 

by: qasitouchPosted on 2008-02-24 at 10:31:42ID: 20970748

sory i wrote response mistanly abouve

its a string buffer

i am writing it again
------------------------------------------------------------------
StringBuffer resposne = new StringBuffer("");

URL url;
            try {
                 
                  url = new URL("www.abc.com/op.htm");
                       URLConnection urlc = url.openConnection();

                        InputStream in = urlc.getInputStream();
                        int ch;

                        while ((ch = in.read()) != -1) {

                              resposne.append((char) ch);
                        }

                              response.setContentType("text/html");
                               
                              String finalResponse = resposne.toString();
                              /** To print the data on the client html browser */
                              out.println(finalResponse);
                              out.close();
}catch(Exception e)
{
e.printstacktrace();
}

-------------------------------

 

by: qasitouchPosted on 2008-02-24 at 10:40:14ID: 20970782

i have been using above code for a long time, but never got such problem.

there is no problem with the code.

See, when you get string from a url, it uses internet, means time taken to get the page from internet, slows the process, otherwise it will not take long as for as you code is concern. user more fast internet conection, you'll se time taken in completing the process will decrease.

It has nothing to do with the code/logice, its all about internet speed or you can say time taken by your application to get the page from internet.

regards,
qasitouch.

 

by: eugie17Posted on 2008-02-24 at 11:11:00ID: 20970903

Thank u I really appreiate anyone who will spend time giving me an answer to my question
but I have one las question for u

did u tryed ur code with the yahoo page? mine work fine for normal pages but has problem with yahoo page (due to size i guess)

20120131-EE-VQP-002

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