如何对 Google Maps API 进行跨域 AJAX 调用? [英] How to make cross-domain AJAX calls to Google Maps API?

问题描述

我正在尝试对 Google 地图地理编码网络服务，但由于跨域安全问题，这不起作用.

I'm trying to make a jQuery $.getJSON call to the Google Maps Geocoding webservice, but this doesn't work because of cross-domain security issues.

我无法在网上弄明白，但我已经阅读了一些关于 Google Javascript API 或 JSONP 的内容，但到目前为止还没有明确的答案......

I haven't been able to figure it out online, but I've read a bit about Google Javascript API or JSONP, but so far no clear answer...

有人可以启发我吗?

谢谢！

推荐答案

我认为使用 服务器端地理编码网络服务，当 Google 地图提供全功能用于 JavaScript 的客户端地理编码 API.

I can see no advantage in using the Server-side Geocoding Web Service when Google Maps provides a full featured Client-side Geocoding API for JavaScript.

首先，这会自动解决您的同源问题，此外，请求限制将按客户端 IP 地址计算，而不是按服务器 IP 地址计算，这对热门站点来说可能会产生巨大的差异.

First of all, this automatically solves your same-origin problem, and in addition the request limits would be calculated per client IP address instead of of per server IP address, which can make a huge difference for a popular site.

这是一个使用 JavaScript Geocoding API v3 的简单示例:

Here's a very simple example using the JavaScript Geocoding API v3:

<script src="http://maps.google.com/maps/api/js?sensor=false"></script>

<script type="text/javascript">     
   var geocoder = new google.maps.Geocoder();
   var address = 'London, UK';

   if (geocoder) {
      geocoder.geocode({ 'address': address }, function (results, status) {
         if (status == google.maps.GeocoderStatus.OK) {
            console.log(results[0].geometry.location);
         }
         else {
            console.log("Geocoding failed: " + status);
         }
      });
   }    
</script>

如果出于某种原因您仍然想使用服务器端网络服务，您可以设置一个非常简单的反向代理，如果您是，可以使用 mod_proxy使用阿帕奇.这将允许您为 AJAX 请求使用相对路径，而 HTTP 服务器将充当任何远程"位置的代理.

If for some reason you still want to use the server-side web-service, you could set up a very simple reverse proxy, maybe using mod_proxy if you are using Apache. This would allow you to use relative paths for your AJAX requests, while the HTTP server would be acting as a proxy to any "remote" location.

在 mod_proxy 中设置反向代理的基本配置指令是 ProxyPass.您通常会按如下方式使用它:

The fundamental configuration directive to set up a reverse proxy in mod_proxy is the ProxyPass. You would typically use it as follows:

ProxyPass     /geocode/     http://maps.google.com/maps/api/geocode/

在这种情况下，浏览器可以向 /geocode/output?parameters 发出请求，但服务器将通过充当 http://maps.google 的代理来提供服务.com/maps/api/geocode/output?parameters.

In this case, the browser could make a request to /geocode/output?parameters but the server would serve this by acting as a proxy to http://maps.google.com/maps/api/geocode/output?parameters.

这篇关于如何对 Google Maps API 进行跨域 AJAX 调用?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IT屋！