如何针对 Google Apps Script ContentService 发出 XHR/ajax 请求? [英] How do I make XHR/ajax requests against Google Apps Script ContentService work?
问题描述
我有一个简单的 Google Apps Script ContentService，它发出一个字符串，如Hello world Sat Jul 14 2012 14:17:21 GMT+1000 (EST)"，网址是 https://script.google.com/macros/s/AKfycbxbFFG95mi8X3PWcxpXanyc7p7p3OWbclXch_bbWczQ/exec 和 open随意打它.代码是:
I have a simple Google Apps Script ContentService that emits a string like "Hello world Sat Jul 14 2012 14:17:21 GMT+1000 (EST)" The url is https://script.google.com/macros/s/AKfycbxbFFG95mi8PWVNCE8366XaxnXQrt6p7p3OWbclXch_bbWczQ/exec and it's open to anonymous. Feel free to hit it. The code is:
function doGet() {
var output = ContentService.createTextOutput()
.setMimeType(ContentService.MimeType.TEXT)
.setContent("Hello world " + new Date());
Logger.log(output.getContent());
return output;
}
当我在浏览器中访问 URL 时，它会按预期返回字符串 (pass.png).当我在 XHR(ajax 调用)中使用相同的 URL 时，它失败并显示空错误.在 Chrome 的开发人员工具中，重定向是 "(canceled)" (fail.png) .这是重现失败的代码:
When I visit the URL in a browser it returns the string as expected (pass.png). When I use the same URL in an XHR (ajax call) it fails with an empty error. In the developer tools in Chrome the redirect is "(canceled)" (fail.png) . Here is the code to reproduce the fail:
<!DOCTYPE html>
<html>
<head>
<script>
function loadXMLDoc() {
xhr=new XMLHttpRequest();
xhr.onreadystatechange=function() {
if (xhr.readyState==4 && xhr.status==200) {
document.getElementById("myDiv").innerHTML=xhr.responseText;
}
};
xhr.open("GET","https://script.google.com/macros/s/AKfycbxbFFG95mi8PWVNCE8366XaxnXQrt6p7p3OWbclXch_bbWczQ/exec",true);
xhr.send();
}
</script>
</head>
<body>
<h2>Using the XMLHttpRequest object</h2>
<div id="myDiv"></div>
<button type="button" onclick="loadXMLDoc()">Get Content via XHR</button>
</body>
</html>
直接请求:XHR 请求:我的问题(希望足够具体):如何从 example.com 上的普通旧网页进行 XHR 调用，以从匿名 Google Apps Script ContentService 脚本中获取内容?
Direct request: XHR request: My question (hopefully specific enough): How do I make XHR calls from a plain old web page on example.com to GET content from anonymous Google Apps Script ContentService scripts?
推荐答案
我不确定目前是否可行.我们考虑了 JSONP 方法(它确实有效；我已经测试过了)，但我认为没有测试过针对 ContentService 制作 XHR 的情况.我们可能需要为此设置 CORS 标头.请在问题跟踪器上提交功能请求，我们会看看是否可以完成.
I am not sure this is currently possible. We considered the JSONP method (which does work; I've tested it) but I don't think making an XHR against ContentService was ever tested. We'd probably need to set up CORS headers for this. Please file a feature request on the issue tracker and we'll see if it can be done.
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