2
更新：找到Google distancematrix并试图相应地修改我的代码。我在这里得到一个无效的参数错误：用C＃中的Google maps API和SSIS包获取驾车距离
return new GeoLocation(dstnc, uri.ToString());
}
catch
{
return new GeoLocation(0.0, "https://");
}
基本上，我需要从两个纬度/多头知道得到的行驶距离。我正在使用SSIS包，我在网上发现了一个非常棒的教程，它非常接近我需要的结果。
教程：http://www.sqlmusings.com/2011/03/25/geocode-locations-using-google-maps-v3-api-and-ssis/
他们的所作所为是通过已知的街道地址，以谷歌，并从返回的XML读经/纬。
我需要做的不同是传递两个已知纬度/经度并读取返回的距离。
他们使用C＃对此我不够好，与知道如何做出修改。我在花刺反正这里是我想出了：
using System;
using System.Collections.Generic;
using System.Text;
//added these
using System.Data;
using System.Net;
using System.Web;
using System.Xml;
// THIS CODE AND INFORMATION ARE PROVIDED "AS IS" WITHOUT WARRANTY OF
// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED
// TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
// PARTICULAR PURPOSE.
namespace sqlmusings
{
public interface IGeoLocation
{
string geocodeurl { get; set; }
float distance { get; set; }
}
public struct GeoLocation : IGeoLocation
{
private string _geocodeurl;
private Double _distance;
public GeoLocation(string geocodeurl, Double distance)
{
_geocodeurl = geocodeurl;
_distance = distance;
}
public string geocodeurl
{
get { return _geocodeurl; }
set { _geocodeurl = value; }
}
public Double distance
{
get { return _distance; }
set { _distance = value; }
}
}
public class GeoCode
{
const string _googleUri = "https://maps.googleapis.com/maps/api/distancematrix/xml?origins=";
//sample
//https://maps.googleapis.com/maps/api/distancematrix/xml?origins=32.1576780,-82.9070920&destinations=27.6536997,-81.5158944&mode=driving&units=imperial&sensor=false
private static Uri GetGeoCodeURI(string origins)
{
origins = HttpUtility.UrlEncode(origins);
string uri = String.Format("{0}{1}&sensor=false", _googleUri, origins);
return new Uri(uri);
public static GeoLocation GetCoordinates(string origins)
{
WebClient wc = new WebClient();
Uri uri = GetGeoCodeURI(origins);
try
{
string geoCodeInfo = wc.DownloadString(uri);
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.LoadXml(geoCodeInfo);
string status = xmlDoc.DocumentElement.SelectSingleNode("status").InnerText;
double dstnc = 0.0;
XmlNodeList nodeCol = xmlDoc.DocumentElement.SelectNodes("result");
foreach (XmlNode node in nodeCol)
{
dstnc = Convert.ToDouble(node.SelectSingleNode("distance/text").InnerText, System.Globalization.CultureInfo.InvariantCulture);
}
return new GeoLocation(dstnc, uri.ToString());
}
catch
{
return new GeoLocation(0.0, "https://");
}
}
}
}
我增加了距离和_distance的代码，但林不知道顶部在哪里进行更改，以添加一个字段为我第二个拉特/长。
以防万一，这里是Main.cs（我没有修改它在所有）：
/* Microsoft SQL Server Integration Services Script Component
* Write scripts using Microsoft Visual C# 2008.
* ScriptMain is the entry point class of the script.*/
using System;
using System.Data;
using Microsoft.SqlServer.Dts.Pipeline.Wrapper;
using Microsoft.SqlServer.Dts.Runtime.Wrapper;
using SC_65a998228f6546ed965116b9f8b76953.csproj;
// THIS CODE AND INFORMATION ARE PROVIDED "AS IS" WITHOUT WARRANTY OF
// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED
// TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
// PARTICULAR PURPOSE.
[Microsoft.SqlServer.Dts.Pipeline.SSISScriptComponentEntryPointAttribute]
public class ScriptMain : UserComponent
{
public override void PreExecute()
{
base.PreExecute();
/*
Add your code here for preprocessing or remove if not needed
*/
}
public override void PostExecute()
{
base.PostExecute();
/*
Add your code here for postprocessing or remove if not needed
You can set read/write variables here, for example:
Variables.MyIntVar = 100
*/
}
public override void Input0_ProcessInputRow(Input0Buffer Row)
{
/*
Add your code here
*/
sqlmusings.GeoLocation geolocation = sqlmusings.GeoCode.GetCoordinates(Row.AddressLine1 + "," + Row.City + "," + Row.State + "," + Row.Country);
Row.Latitude = Convert.ToDecimal(geolocation.latitude);
Row.Longitude = Convert.ToDecimal(geolocation.longitude);
Row.GeoCodeURL = geolocation.geocodeurl;
}
}
在正确的方向就在推的是所有的即时通讯要求。