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I have created a login application in jsp/servlet in my web project and I want to know about the geographic locations of different users those access my login page. How can I know that a person is accessing my login page from where? For example: If a person is accessing a page from Canada then a record will be inserted into my database such as : IP: 20.4.9.134 and location: Canada.
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You can use the DB of MaxMind (the free version): http://www.maxmind.com/app/geolitecity
But have in mind that geolocating by IP is never too accurate and might give huge errors especially when using GPRS/EDGE/3G mobile internet.
try a geo ip database, like maxmind
this question lists a few possibilities: Reputable geo-ip location Services
I use this:
http://freegeoip.net/xml/122.169.8.137
Or
http://www.geoplugin.net/xml.gp?ip=xx.xx.xx.xx
Easy call and it throws you an xml with everything you need to know
Edit: New location for geoip