Google Geolocation API – 使用经度和纬度在文本框中获取地址？

我注意到有很多关于如何根据IP地址使用Google地理定位查看位置的信息。 但我想知道是否以及如何使用此服务输入位置（经度和纬度）并返回当前地址，或至少是一个城市，州。

我想在C＃中这样做，但我会使用任何语言。

任何建议？

Answer 1

您描述的内容称为反向地理编码 。 Google提供了一种地理编码Web服务API ，您可以从服务器端应用程序（使用任何语言）调用它来执行反向地理编码 。

例如，以下请求：

http://maps.google.com/maps/api/geocode/xml?latlng=40.714224,-73.961452&sensor=false

…将返回如下所示的响应（截断）：

 OK  street_address 277 Bedford Ave, Brooklyn, NY 11211, USA  277 277 street_number   Bedford Ave Bedford Ave route   Brooklyn Brooklyn sublocality political   New York New York locality political   Kings Kings administrative_area_level_2 political   New York NY administrative_area_level_1 political   United States US country political   11211 11211 postal_code    40.7142330 -73.9612910  ROOFTOP   40.7110854 -73.9644386   40.7173806 -73.9581434      

但请注意， Google Maps API使用条款似乎禁止存储结果 ，除非该商店充当Google地图中将使用的数据的缓存。 您可能希望与Google取得联系并在Google Maps API Premier上查询，以便为您的地理编码要求提供更灵活的使用条款。

Answer 2

这是ac＃implementation。 请注意，我不是c＃程序员 – 因此代码可能很难看。 但它的确有效。 它不仅仅为您提供地址。 这是一个控制台应用程序，您应该能够轻松地将其用于webforms或winforms。

 using System; using System.Threading; using System.Collections.Generic; using System.Linq; using System.Text; using System.Web; using System.Xml; using System.Xml.XPath; namespace ReverseGeoLookup { // http://code.google.com/apis/maps/documentation/geocoding/#ReverseGeocoding public static string ReverseGeoLoc(string longitude, string latitude, out string Address_ShortName, out string Address_country, out string Address_administrative_area_level_1, out string Address_administrative_area_level_2, out string Address_administrative_area_level_3, out string Address_colloquial_area, out string Address_locality, out string Address_sublocality, out string Address_neighborhood) { Address_ShortName = ""; Address_country = ""; Address_administrative_area_level_1 = ""; Address_administrative_area_level_2 = ""; Address_administrative_area_level_3 = ""; Address_colloquial_area = ""; Address_locality = ""; Address_sublocality = ""; Address_neighborhood = ""; XmlDocument doc = new XmlDocument(); try { doc.Load("http://maps.googleapis.com/maps/api/geocode/xml?latlng=" + latitude + "," + longitude + "&sensor=false"); XmlNode element = doc.SelectSingleNode("//GeocodeResponse/status"); if (element.InnerText == "ZERO_RESULTS") { return ("No data available for the specified location"); } else { element = doc.SelectSingleNode("//GeocodeResponse/result/formatted_address"); string longname=""; string shortname=""; string typename =""; bool fHit=false; XmlNodeList xnList = doc.SelectNodes("//GeocodeResponse/result/address_component"); foreach (XmlNode xn in xnList) { try { longname = xn["long_name"].InnerText; shortname = xn["short_name"].InnerText; typename = xn["type"].InnerText; fHit = true; switch (typename) { //Add whatever you are looking for below case "country": { Address_country = longname; Address_ShortName = shortname; break; } case "locality": { Address_locality = longname; //Address_locality = shortname; //Om Longname visar sig innehålla konstigheter kan man använda shortname istället break; } case "sublocality": { Address_sublocality = longname; break; } case "neighborhood": { Address_neighborhood = longname; break; } case "colloquial_area": { Address_colloquial_area = longname; break; } case "administrative_area_level_1": { Address_administrative_area_level_1 = longname; break; } case "administrative_area_level_2": { Address_administrative_area_level_2 = longname; break; } case "administrative_area_level_3": { Address_administrative_area_level_3 = longname; break; } default: fHit = false; break; } if (fHit) { Console.Write(typename); Console.ForegroundColor = ConsoleColor.Green; Console.Write("\tL: " + longname + "\tS:" + shortname + "\r\n"); Console.ForegroundColor = ConsoleColor.Gray; } } catch (Exception e) { //Node missing either, longname, shortname or typename fHit = false; Console.Write(" Invalid data: "); Console.ForegroundColor = ConsoleColor.Red; Console.Write("\tX: " + xn.InnerXml + "\r\n"); Console.ForegroundColor = ConsoleColor.Gray; } } //Console.ReadKey(); return (element.InnerText); } } catch (Exception ex) { return ("(Address lookup failed: ) " + ex.Message); } } } 

Answer 3

您要做的是反向地理编码（请参阅Daniel的回答）。

PHP中的示例实现：

 /** * reverse geocoding via google maps api * convert lat/lon into a name */ function reverse_geocode($lat, $lon) { $url = "http://maps.google.com/maps/api/geocode/json?latlng=$lat,$lon&sensor=false"; $data = json_decode(file_get_contents($url)); if (!isset($data->results[0]->formatted_address)){ return "unknown Place"; } return $data->results[0]->formatted_address; } 

Answer 4

谷歌的Maps API遍布http，所以用get然后解析请求发送请求……应该可以用任何语言进行。

例如，在PHP中：

 $ret = file_get_contents("http://maps.google.com/maps/api/geocode/xml?address=" . urlencode($address) . "&sensor=false" . "&key=" . $this->key ); $xml = new SimpleXMLElement($ret); $error = $xml->status; 

所有API都适用。

Answer 5

 protected void Button1_Click(object sender, EventArgs e) { this.calcularRota(txtOrigem.Text.Trim(), txtDestino.Text.Trim()); } public void calcularRota(string latitude, string longitude) { //URL do distancematrix - adicionando endereco de origem e destino string url = string.Format("http://maps.googleapis.com/maps/api/geocode/xml?latlng={0},{1}&sensor=false", latitude, longitude); XElement xml = XElement.Load(url); // verifica se o status é ok if (xml.Element("status").Value == "OK") { //Formatar a resposta Label3.Text = string.Format("Origem: {0}", //Pegar endereço de origem xml.Element("result").Element("formatted_address").Value); //Pegar endereço de destino } else { Label3.Text = String.Concat("Ocorreu o seguinte erro: ", xml.Element("status").Value); } } } 

Answer 6

获取地址的简单方法是通过谷歌的API。

例如。

 using System.Xml; //Console.WriteLine("enter coordinate:"); string coordinate = "32.797821,-96.781720"; //Console.ReadLine(); XmlDocument xDoc = new XmlDocument(); xDoc.Load("https://maps.googleapis.com/maps/api/geocode/xml?latlng=" + coordinate); XmlNodeList xNodelst = xDoc.GetElementsByTagName("result"); XmlNode xNode = xNodelst.Item(0); string FullAddress = xNode.SelectSingleNode("formatted_address").InnerText; string Number = xNode.SelectSingleNode("address_component[1]/long_name").InnerText; string Street = xNode.SelectSingleNode("address_component[2]/long_name").InnerText; string Village = xNode.SelectSingleNode("address_component[3]/long_name").InnerText; string Area = xNode.SelectSingleNode("address_component[4]/long_name").InnerText; string County = xNode.SelectSingleNode("address_component[5]/long_name").InnerText; string State = xNode.SelectSingleNode("address_component[6]/long_name").InnerText; string Zip = xNode.SelectSingleNode("address_component[8]/long_name").InnerText; string Country = xNode.SelectSingleNode("address_component[7]/long_name").InnerText; Console.WriteLine("Full Address: " + FullAddress); Console.WriteLine("Number: " + Number); Console.WriteLine("Street: " + Street); Console.WriteLine("Village: " + Village); Console.WriteLine("Area: " + Area); Console.WriteLine("County: " + County); Console.WriteLine("State: " + State); Console.WriteLine("Zip: " + Zip); Console.WriteLine("Country: " + Country); Console.ReadLine(); 

PS请注意不同组件的不同地址。

Answer 7

 private string getLocationByGeoLocation(string longitude, string latitude) { string locationName = string.Empty; try { if (string.IsNullOrEmpty(longitude) || string.IsNullOrEmpty(latitude)) return ""; string url = string.Format("https://maps.googleapis.com/maps/api/geocode/xml?latlng={0},{1}&sensor=false", latitude, longitude); WebRequest request = WebRequest.Create(url); using (WebResponse response = (HttpWebResponse)request.GetResponse()) { using (StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8)) { DataSet dsResult = new DataSet(); dsResult.ReadXml(reader); try { foreach (DataRow row in dsResult.Tables["result"].Rows) { string fullAddress = row["formatted_address"].ToString(); } } catch (Exception) { } } } } catch (Exception ex) { lblError.Text = ex.Message; } return locationName; } 

Answer 8

反向地理编码：使用谷歌地图在asp.net中对地理编码api从纬度和经度获取地址

 protected void Page_Load(object sender, EventArgs e) { GetAddress("53.2734", "-7.77832031"); } private string GetAddress(string latitude, string longitude) { string locationName = ""; string url = string.Format("http://maps.googleapis.com/maps/api/geocode/xml?latlng={0},{1}&sensor=false", latitude, longitude); XElement xml = XElement.Load(url); if (xml.Element("status").Value == "OK") { locationName = string.Format("{0}", xml.Element("result").Element("formatted_address").Value); Label1.Text = locationName; } return locationName; }