Re: fetch content from google results

From:
Lew <noone@lewscanon.com>
Newsgroups:
comp.lang.java.programmer
Date:
Tue, 30 Sep 2008 08:15:56 -0400
Message-ID:
<fq-dnW3rguTghX_VnZ2dnUVZ_gKdnZ2d@comcast.com>
prabesh shrestha wrote:

... code ...
  /** Fetch the HTML content of the page as simple text. */
  public String getPageContent() {
    String result = null;
    URLConnection connection = null;


This is minor, but 'URLConnection' should be declared in the 'try' block, and
not initialized to 'null' but to the 'openConnection()' call.

    try {
      connection = fURL.openConnection();
      Scanner scanner = new Scanner(connection.getInputStream());
      scanner.useDelimiter(END_OF_INPUT);
      result = scanner.next();
    }
    catch ( IOException ex ) {
      log("Cannot open connection to " + fURL.toString());
    }
    return result;
  }
... code ...
here is my code .I could get all the content if i [sic] set url as wikipedia
but i [sic] could not get the snipplet from google.I don't understant what
is happening.Maybe someone has the solution.


Did you read Roland de Ruiter's answer? I don't see anything to account for
it in your code sample. Allow me to quote:

When connecting to Google (or any other server), Java's implementation of
HttpURLConnection identifies itself by default with "Java/1.6.0_07" as
User-Agent request header (or similar, depending on which version of Java is
installed).

Google checks for the User-Agent request header and rejects requests issued by
unsupported browsers/user-agents, including "Java/1.6.0_07".

However, if you set the User-Agent request header of the HttpURLConnection to
a value used by a modern browser (e.g. Internet Explorer, Firefox or Safari),
you should be able to obtain the results of the Google search.


--
Lew

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