如何从Python脚本向jQuery发送JSON对象?

I've looked through APIs and all sorts of resources, but I can't seem to get the hang of fetching a JSON object from a Python script using AJAX. I'm sure the issue is with how I'm dealing with the JSON object.

我查看了api和各种资源，但似乎无法使用AJAX从Python脚本中获取JSON对象。我确信问题在于如何处理JSON对象。

First, in a python script on my server, I generate and print a JSON array

首先，在服务器上的python脚本中，生成并打印JSON数组

import json
print "Content-type: application/json"
print 
print json.dumps(['Price',{'Cost':'99'}])

Then, in a separate html file, I try something like

然后，在一个单独的html文件中，我尝试类似的东西

<body>
<div id="test">
</div>

<script>
 $(document).ready(function() {
  $.getJSON("http://www.example.com/cgi-bin/makeJSON.py", function(data) {
        $('#test').html("JSON Data: " + data.Price);
    });
});
</script>
</body>

But I don't get anything. I'm sure that data.Price is wrong, but I'm also pretty certain that I should be doing something instead of just printing the results of json.dumps

但我什么都没得到。我相信数据。价格是错误的，但我也很确定我应该做一些事情，而不是仅仅打印json.dump的结果。

Any help is appreciated! Thanks in advance, and sorry if this is an obvious question.

任何帮助都是赞赏!提前谢谢，如果这是一个明显的问题，我很抱歉。

2 个解决方案

#1

In your case you have enclosed the JSON response in an array. To access price you need to access data[0]. You need to structure your JSON data properly.

在您的例子中，您将JSON响应包含在一个数组中。要访问价格，需要访问数据[0]。您需要正确地构造JSON数据。

The following changes in your Python script should allow you to access data.Price. Let me know in case you still face any issues.

Python脚本中的以下更改应该允许您访问data.Price。万一你还有什么问题，请告诉我。

   import json
   print "Content-type: application/json"
   print 
   response={'Price':54,'Cost':'99'}
   print(json.JSONEncoder().encode(response))

#2

Please provide more context to what you're trying to do. Can you just hard-code the JSON object into the HTML? Or, are you trying to do something more dynamic, like AJAX?

请提供更多你想做的事情的背景。可以将JSON对象硬编码到HTML中吗?或者，您是否正在尝试做一些更动态的事情，比如AJAX?

For the former, view the HTML source of the page that Python generates. It must look something like:

对于前者，请查看Python生成的页面的HTML源代码。它应该是这样的:

<script type="text/javascript">
   var MY_GLOBAL_JSON_OBJECT = { ... };
</script>

Or you could just spit out the JSON object inside the function that's actually using it instead of assigning it first to a global variable.

或者你可以在函数中直接输出JSON对象，而不是先分配给全局变量。

#1