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Calling javascript synchronously by Enver Haase, 7 days ago
Recent Posts
Vaadin Forum3. Vaadin 6, 7, 8

Web crawling????

jose robles
6 years ago Apr 01, 2016 12:33am

Hello , Im having problems undestanding how to use the web crawling on a vaadin aplication, i have already read the documentation on Book of Vaadin (https://vaadin.com/docs/-/part/framework/advanced/advanced-urifu.html) But I dont undestand If I'm using it right, here is what I want to accomplish:

We want that google could locate some products on our app, for example if one entes on this link: http://myapp.com/market#!market-item/12345
This link should open the product description page.

But according to the book of vaadin I need to enable (override) the method service on the vaadinservlet to tell the search engines the links of where to look for info in my application, :

@Override 
protected void service(HttpServletRequest request, 
                                      HttpServletResponse response) throws ServletException, 
                                                                                                      IOException { 
String fragment = request .getParameter("idworkflow"); 
if (fragment != null) { 
Product myProduct = ProductApi.get(fragment);
ArrayList<Product> allProducts = ProductApi.get();
Writer writer = response.getWriter(); writer.append("<html><body>"+ "<p>Here is some information about product: "+myProduct.getName()+"</p>"); 
writer.append("<ul>");
for(Product p : allProducts)
{
writer.append("<li><a href='http://myapp.com/market#!market-item/"+p.getid()+"'>"+p.getName+"</a></li>");
}
writer.append("</ul>");
writer.append("</body>"); 
}else { 
super.service(request, response); 
}
}

 example:
http://myapp.com/market?idproduct=12345

This will write the next: 

<html>
<body>
Here is some information about Product 12345,
<p>Index of all content:</p>
<ul>
<li><a href='http://myapp.com/market#!market-item/12345'>Product 12345</a></li>
<li><a href='http://myapp.com/market#!market-item/12346'>Product 12346</a></li>
<li><a href='http://myapp.com/market#!market-item/12347'>Product 12347</a></li>
....
...
..
<li><a href='http://myapp.com/market#!market-item/n'>Producto n</a></li>
</ul>

</body>
</html>

Is this correct? or I didnt get it at all?

******************UPDATEThis article resolved many opf my questions: https://www.smashingmagazine.com/2011/09/searchable-dynamic-content-with-ajax-crawling/