Rails 如何实现通过登录IP确定城市功能

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对于Rails而言，主流方式应该是使用google库的插件geoip
github地址如下

Ruby代码

require 'geoip'
GeoIP.new('GeoLiteCity.dat').country('www.atlantis.sk')
=> ["www.atlantis.sk", "217.67.18.26", "SK", "SVK", "Slovakia", "EU", "02", "Bratislava", "", 48.15, 17.1167, nil, nil, "Europe/Bratislava"]
Returned values are the requested hostname, the IP address as a dotted quad,
Maxmind's country code, the ISO3166-1 country code, the ISO3166-2 country code,
the ISO3166 country name, and the continent code.
GeoIP.new('GeoCity.dat').city('github.com')
=> ["github.com", "207.97.227.239", "US", "USA", "United States", "NA", "CA", "San Francisco", "94110", 37.7484, -122.4156, 807, 415, "America/Los_Angeles"]
Returned values are the country values followed by region or state name,
city name, postal_code/zipcode, latitude, longitude, USA DMA code, USA area code,
timezone name. Sorry it's not a Hash... historical.
GeoIP.new('GeoIPASNum.dat').asn("www.fsb.ru")
=> ["AS8342", "RTComm.RU Autonomous System"]

另外一个 geo_ip

使用如下：

Ruby代码

GeoIp.geolocation(ip_address)

Ruby代码

# 209.85.227.104 = google.be (US)
GeoIp.geolocation('209.85.227.104')
#returns:
{
:status =>"OK",
:ip =>"209.85.227.104"
:country_code =>"US",
:country_name =>"United States",
:region_code =>"06",
:region_name =>"California",
:city =>"Mountain View",
:zip_postal_code =>"94043",
:latitude =>"37.4192",
:longitude =>"-122.057"
}

geokit是一个关于地理的工具，比如根据经纬度确定城市和距离之类

Ruby代码

#Find near latitude and longitude:
Store.find(:all, :origin =>[37.792,-122.393], :within=>10)
#Find near an address:
Store.find(:all, :origin=>'100 Spear st, San Francisco, CA', :within=>10)
#Order by distance from the center of a zipcode:
Store.find(:all, :origin=>'94117', :within=>10,
:order=>'distance asc')
#Combine distance conditions with regular conditions
Store.find(:all, :origin=>'94117', :within=>10,
:conditions=>{:store_type=>'CAFE'})

一个是通过网络的IP查询API，这个办法IP库更新比较快。通用的库有几个比如google。
xml处理页面完全可以通过nokogiri等专门处理工具代替

提供IP地址查询的API很多比如网易
http://www.youdao.com/smartresult-xml/search.s?type=ip&q=IP地址

Ruby代码

require 'net/http'
require 'rexml/document'
include REXML
class MapsController < ApplicationController
def index
@location = locateIp()
end
def locateIp
#ip = "123.123.123.123";
ip = request.remote_ip
ips = ip.to_s
url = "http://ipinfodb.com/ip_query.php?ip="+ips+"&timezone=false"
xml_data = Net::HTTP.get_response(URI.parse(url)).body
xmldoc = REXML::Document.new(xml_data)
# Now get the root element
root = xmldoc.root
city = ""
regionName = ""
countryName = ""
# This will take country name...
xmldoc.elements.each("Response/CountryName") {
|e| countryName << e.text
}
# Now get city name...
xmldoc.elements.each("Response/City") {
|e| city << e.text
}
# This will take regionName...
xmldoc.elements.each("Response/RegionName") {
|e| regionName << e.text
}
ipLocation = city +", "+regionName+", "+countryName
return ipLocation
end #end of method locateIp
end

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2 楼 fireflyman 2010-11-04

1 楼 qichunren 2010-08-25

支持！

posted on 2011-08-19 22:55 lexus 阅读(...) 评论(...) 编辑收藏

转载于:https://www.cnblogs.com/lexus/archive/2011/08/19/2146342.html