Google Maps HTTP API用于驾车和步行路线 [英] Google Maps HTTP API for driving and walking directions

问题描述

你知道如何通过给出两个特定的坐标来从Google获得步行路线吗？
如何发送简单的HTTP GET请求并将结果存入KML文件？

我不想进行地理编码，但可以获取行车路线该方法返回的KML文件：

http://www.gringod.com/2008/02/26/save-google-maps-driving-directions/

目前还没有文档和批准的方法可通过HTTP请求访问Google Maps Directions API（更新：Google已添加2010年5月，通过网络服务路线指引） p>

尽管如此，返回JSON输出的未公开方法如下：

  http://maps.google.com/maps/nav?q=from:London%20to:Dover 
  

的格式 q 参数应该为：来自：xxx％20to：yyy 。将xxx和yyy分别替换为start和destination。您可以使用纬度和经度，而不是完整的地址。

默认情况下，此请求会返回行车路线。要获取步行路线，您可以将可选参数 dirflg = w 添加到查询字符串中。 （来源）

<请注意，这不仅仅是没有记录的，但它也可能违反了 Google地图API条款。

您可能会在查看以下文章时感兴趣：

• 获取距离通过URL使用GDirections


• 使用PHP计算驾车路线？
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• 通过服务器端HTTP调用从Google地图中检索行车路线并显示结果与WAP的静态地图


• Google Maps and Directions，REST Interface？

Do you know how I can get walking directions from Google by giving two specific coordinates? How can I send simple HTTP GET requests and have the result in a KML file?

I don't want to geocode, but get the driving directions as the KML file returned by this method:

http://www.gringod.com/2008/02/26/save-google-maps-driving-directions/

解决方案

There is no documented and approved method at the moment to access the Google Maps Directions API via an HTTP request (update: Google added walking and driving directions via web services in May, 2010).

Nevertheless, an undocumented method that returns a JSON output is the following:

http://maps.google.com/maps/nav?q=from:London%20to:Dover

The format of the q parameter should be from:xxx%20to:yyy. Replace xxx and yyy with the start and destination respectively. You can use a latitude and a longitude instead of full addresses.

By default this request returns driving directions. To get walking directions you can add the optional parameter dirflg=w to the query-string. (Source)

Note that not only this is undocumented, but it may also violate the restrictions 10.1 and 10.5 of the Google Maps API Terms and Conditions.

You may also be interesting in checking out the following articles:

• Getting distance using GDirections via URL
• Calculate driving directions using PHP?
• Retrieve driving directions from google maps with server-side HTTP calls and show results with static maps for WAP
• Google Maps and Directions, REST Interface?

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