retrieve any website using java

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how to retrieve a complete web site using java in that i can use the web site in offline mode but without using any tool. Only using java program.

Posted 15-May-13 16:04pm

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Sergey Alexandrovich Kryukov · Answer 1 · 2013-05-15T17:22:00

You need to develop the techniques of Web scraping: http://en.wikipedia.org/wiki/Web_scraping[^].

You can use the class HttpURLConnection:
http://docs.oracle.com/javase/7/docs/api/java/net/HttpURLConnection.html[^].

There is a Google option, the class com.google.appengine.api.urlfetch.HTTPRequest:
https://developers.google.com/appengine/docs/java/javadoc/com/google/appengine/api/urlfetch/HTTPRequest[^].

After you get the content, you will most likely need to collect some or all links on a page and use them to do further scraping. You would need to utilize some appropriate HTML parser. You can find one by yourself.

Just a couple of options you can consider:
http://htmlcleaner.sourceforge.net/[^],
http://htmlparser.sourceforge.net/[^].

—SA