Facebook Graph API Request

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Facebook-API

Hi,

By using "https://graph.facebook.com/xyz" we will be able to get information about "xyz" public page in facebook, and by using our access token we can get more information about "xyz" page like feeds,posts etc.

Now my question is :

1. Is there any way to make "access token" permanent? if so how? so that i need not create access token each and every 2hour interval.

2. How to export this pages public content to a xml or excel file?

thanks in advance.