如何从谷歌地图api响应中读取城市和邮政编码

本文介绍了如何从谷歌地图api响应中读取城市和邮政编码的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述 限时删除！！<pre lang="xml"><GeocodeResponse><status>OK</status><result><type>subway_station</type><type>train_station</type><type>transit_station</type><type>establishment</type><formatted_address>Golf Course, Captain Shashi Kant Sharma Marg, Noida Golf Course, Sector 37, Noida, Uttar Pradesh 201303, India<formatted_address><address_component><long_name>Golf Course</long_name><short_name>Golf Course</short_name><type>subway_station</type><type>train_station</type><type>transit_station</type><type>establishment</type></address_component><address_component><long_name>Captain Shashi Kant Sharma Marg</long_name><short_name>Captain Shashi Kant Sharma Marg</short_name><type>route</type></address_component><address_component><long_name>Noida Golf Course</long_name><short_name>Noida Golf Course</short_name><type>sublocality_level_2</type><type>sublocality</type><type>political</type></address_component><address_component><long_name>Sector 37</long_name><short_name>Sector 37</short_name><type>sublocality_level_1</type><type>sublocality</type><type>political</type></address_component><address_component><long_name>Noida</long_name><short_name>Noida</short_name><type>locality</type><type>political</type></address_component><address_component><long_name>Gautam Buddh Nagar</long_name><short_name>Gautam Buddh Nagar</short_name><type>administrative_area_level_2</type><type>political</type></address_component><address_component><long_name>Uttar Pradesh</long_name><short_name>UP</short_name><type>administrative_area_level_1</type><type>political</type></address_component><address_component><long_name>India</long_name><short_name>IN</short_name><type>country</type><type>political</type></address_component><address_component><long_name>201303</long_name><short_name>201303</short_name><type>postal_code</type></address_component><geometry><location><lat>28.5671746</lat><lng>77.3459920</lng></location><location_type>APPROXIMATE</location_type><viewport><southwest><lat>28.5658059</lat><lng>77.3445952</lng></southwest><northeast><lat>28.5685039</lat><lng>77.3472931</lng></northeast></viewport><bounds><southwest><lat>28.5665483</lat><lng>77.3451542</lng></southwest><northeast><lat>28.5677615</lat><lng>77.3467341</lng></northeast></bounds></geometry><partial_match>true</partial_match><place_id>ChIJn5CCdrjlDDkR1c3SwjoQ__A</place_id></result></GeocodeResponse></pre>This is the response I am getting from api but problem is the index of city and zip code is always changingmy code is<pre lang="c#">string url = "http://maps.google.com/maps/api/geocode/xml?address=" + completeAdd + "&sensor=false"; 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); DataTable dtCoordinates = new DataTable(); dtCoordinates.Columns.AddRange(new DataColumn[5] { new DataColumn("Id", typeof(int)), new DataColumn("Address", typeof(string)), new DataColumn("Latitude",typeof(string)), new DataColumn("Longitude",typeof(string)), new DataColumn("City",typeof(string)) }); if (dsResult.Tables["result"] != null) foreach (DataRow row in dsResult.Tables["result"].Rows) { var city = ""; if (dsResult.Tables["address_component"].Select()[4].ItemArray[0].ToString() == "political") { city = dsResult.Tables["address_component"].Select("result_id = " + row["result_id"].ToString())[4].ItemArray[0].ToString(); } string geometry_id = dsResult.Tables["geometry"].Select("result_id = " + row["result_id"].ToString())[0]["geometry_id"].ToString(); DataRow location = dsResult.Tables["location"].Select("geometry_id = " + geometry_id)[0]; dtCoordinates.Rows.Add(row["result_id"], row["formatted_address"], location["lat"], location["lng"], city); } return dtCoordinates; } }</pre>推荐答案DataTable dtCoordinates = new DataTable();dtCoordinates.Columns.AddRange(new[] { new DataColumn("Id", typeof(string)), new DataColumn("Address", typeof(string)), new DataColumn("Latitude", typeof(double)), new DataColumn("Longitude", typeof(double)), new DataColumn("City", typeof(string)), new DataColumn("ZipCode", typeof(string))});// Make sure the address parameter is properly encoded:string url = "http://maps.google.com/maps/api/geocode/xml?address=" + Uri.EscapeDataString(completeAdd) + "&sensor=false";// Load the document, and find the "result" node:XDocument document = XDocument.Load(url);XElement result = document.Root == null ? null : document.Root.Element("result");if (result != null){ // TODO: There doesn't seem to be a "result_id" node anywhere in the XML. // Assuming you meant the "place_id", which is a string. string placeId = (string)result.Element("place_id"); string formattedAddress = (string)result.Element("formatted_address"); // TODO: I've assumed that "Noida" is the city in your example. string city = (string)result .Elements("address_component") .Where(ac => ac.Elements("type").Any(t => t.Value == "locality")) .Elements("long_name") .FirstOrDefault() ; string zipCode = (string)result .Elements("address_component") .Where(ac => ac.Elements("type").Any(t => t.Value == "postal_code")) .Elements("long_name") .FirstOrDefault() ; var location = result.Elements("geometry").Elements("location").FirstOrDefault(); double? latitude = location == null ? default(double?) : (double?)location.Element("lat"); double? longitude = location == null ? default(double?) : (double?)location.Element("lng"); dtCoordinates.Rows.Add(placeId, formattedAddress, latitude, longitude, city, zipCode);}return dtCoordinates; 这篇关于如何从谷歌地图api响应中读取城市和邮政编码的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！ 1403页，肝出来的..