SEOUtil.java

package org.karmaexchange.util;

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.MalformedURLException;
import java.net.URLDecoder;

import javax.servlet.http.HttpServletRequest;

import com.gargoylesoftware.htmlunit.FailingHttpStatusCodeException;
import com.gargoylesoftware.htmlunit.SilentCssErrorHandler;
import com.gargoylesoftware.htmlunit.WebClient;
import com.gargoylesoftware.htmlunit.html.HtmlPage;

public class SEOUtil {
	
    public static String fetchURL(HttpServletRequest request)
    {
        WebClient webClient = new WebClient();
        webClient.setCssErrorHandler(new SilentCssErrorHandler());
        try {
              String hash = URLDecoder.decode(request.getParameter("_escaped_fragment_"),"utf-8");
              HtmlPage page = webClient.getPage(ServletUtil.getBaseUri(request)+"/#!"+hash);
              
              webClient.waitForBackgroundJavaScript(1000);
              return page.asXml();
        } catch (FailingHttpStatusCodeException e) {
          // TODO Auto-generated catch block
              e.printStackTrace();
        } catch (MalformedURLException e) {
          // TODO Auto-generated catch block
              e.printStackTrace();
        } catch (IOException e) {
          // TODO Auto-generated catch block
              e.printStackTrace();
        }
        finally
        {
        	   webClient.closeAllWindows();
        }
        return "Error occured";
    }
    
    public static String fetchFBOGTags(HttpServletRequest request) throws UnsupportedEncodingException
    {
    	StringBuffer output = new StringBuffer();
    	output.append("<meta property=\"og:type\" content=\""+request.getParameter("ogtype")+"\"/>");
    	output.append("<meta property=\"og:url\" content=\""+URLDecoder.decode(request.getParameter("ogurl"),"utf-8")+"\"/>");
    	output.append("<meta property=\"og:title\" content=\""+URLDecoder.decode(request.getParameter("ogtitle"),"utf-8")+"\"/>");
    	output.append("<meta property=\"og:image\" content=\""+URLDecoder.decode(request.getParameter("ogimage"),"utf-8")+"\"/>");
    	output.append("<script> window.location=\""+URLDecoder.decode(request.getParameter("ogurl"),"utf-8")+"\"</script>");
    	return output.toString();
    	
    }
	

}