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如何在Java代码中使用Google Maps API来获取指定位置的坐标？

[英]How do I use Google Maps API in a Java code to fetch coordinates of specified location?

原文 2012-10-12 05:48:51 3 2 java/ function/ google-maps

In a BI project I'm currently working on, we are in need of geo-coordinates for a list of locations. 在我目前正在从事的BI项目中，我们需要地理位置坐标以获取位置列表。 With the address location (such as "New York, US" ) as input, the output should be the coordinates as a latitude-longitude pair (like {40.71435, -74.00597} ). 使用地址位置（例如"New York, US" ）作为输入，输出应该是经纬度对（例如{40.71435, -74.00597} ）的坐标。 The behaviour is similar to what is seen on this page. 行为类似于在此页面上看到的。

A similar question earlier on SO points to using the Google Maps API in JavaScript to achieve this, but I'm looking for a Java solution -- some function of the form getCoordinates(location) , because this is a small requirement in a larger Java program already in existence. 关于SO的类似问题也指向在JavaScript中使用Google Maps API来实现此目的，但我正在寻找Java解决方案getCoordinates(location)形式的某些功能，因为这在较大的Java中是一个很小的要求程序已经存在。

Any pointers on how I may use the Google Maps API (or any other maps API) in Java to achieve this would be of great help! 任何有关如何在Java中使用Google Maps API（或任何其他maps API）来实现此目标的指示都将大有帮助！

2 个解决方案

You can use the Google Geocoding HTTP API (see here ). 您可以使用Google Geocoding HTTP API（请参阅此处）。 To connect to it and get the responses you can use a Java URLConnection (tutorial is here ) and parse the response using your favourite Json library (I personally use Jackson) 要连接到它并获取响应，您可以使用Java URLConnection（教程在此处），并使用您喜欢的Json库解析响应（我个人使用Jackson）

So you'd like a way to perform Google Maps API Geocoding via Java - here's one that might work for you. 因此，您想要一种通过Java执行Google Maps API地理编码的方法-这可能对您有用。 The response might not be in the exact same format you need but should be pretty workable: 响应的格式可能与您所需的格式不完全相同，但是应该可以使用：

http://code.google.com/p/geocoder-java/ http://code.google.com/p/geocoder-java/

You can see the final format returned in LatLng.java - just trace the code through starting from GeocodeResponse.java and you'll see the final format - the classes are pretty simple. 您可以看到LatLng.java中返回的最终格式-只需从GeocodeResponse.java开始跟踪代码，您将看到最终格式-这些类非常简单。