python - 从 Python 中的响应中读取特定的 JSON 对象

Question

这个问题已经有答案了:

Accessing elements of Python dictionary by index (11 个回答)

已关闭 7 年前。

当您的 JSON 响应包含多个 JSON 对象时，如何使用 Python 提取 JSON 中的特定对象？

例如，对于以下 JSON 响应，其中包含三个对象。

{
"_links": {
    "base": "REDACTED", 
    "context": "", 
    "self": "REDACTED"
}, 
"limit": 20, 
"results": [
    {
        "_expandable": {
            "ancestors": "", 
            "body": "", 
            "children": "", 
            "container": "", 
            "descendants": "", 
            "extensions": "", 
            "history": "/rest/api/content/198121503/history", 
            "metadata": "", 
            "operations": "", 
            "space": "/rest/api/space/ReleaseNotes", 
            "version": ""
        }, 
        "_links": {
            "self": "REDACTED", 
            "tinyui": "/x/HxjPCw", 
            "webui": "UNIQUE_URL_HERE"
        }, 
        "id": "198121503", 
        "status": "current", 
        "title": "Unique Title of Content", 
        "type": "page"
    }, 
    {
        "_expandable": {
            "ancestors": "", 
            "body": "", 
            "children": "", 
            "container": "", 
            "descendants": "", 
            "extensions": "", 
            "history": "/rest/api/content/197195923/history", 
            "metadata": "", 
            "operations": "", 
            "space": "/rest/api/space/ReleaseNotes", 
            "version": ""
        }, 
        "_links": {
            "self": "REDACTED", 
            "tinyui": "/x/k-jACw", 
            "webui": "UNIQUE_URL_HERE"
        }, 
        "id": "197195923", 
        "status": "current", 
        "title": "Unique Title of Content", 
        "type": "page"
    }, 
    {
        "_expandable": {
            "ancestors": "", 
            "body": "", 
            "children": "", 
            "container": "", 
            "descendants": "", 
            "extensions": "", 
            "history": "/rest/api/content/198121203/history", 
            "metadata": "", 
            "operations": "", 
            "space": "/rest/api/space/ReleaseNotes", 
            "version": ""
        }, 
        "_links": {
            "self": "REDACTED", 
            "tinyui": "/x/8xbPCw", 
            "webui": "UNIQUE_URL_HERE"
        }, 
        "id": "198121203", 
        "status": "current", 
        "title": "Unique Title of Content", 
        "type": "page"
    } 
], 
"size": 3, 
"start": 0

}

如何检索响应中特定对象的 ID 和 TITLE？

我在其他线程中读到，当您使用 json.loads(your_json) 时，它就变成了一本字典。如果是这样的话，如果这些数据存储为字典，我该如何提取这些数据？

更新

让我澄清一下，因为也许我没有清楚地看到或解释这一点。

这是循环遍历所有内容的唯一选择吗？没有一个选项可以让我获取第二个 JSON 对象并返回 ID 和标题吗？如果是这样，为什么我不应该创建一个自定义对象，将每个 JSON 对象中我想要的项目存储到数组中，然后我就可以访问数组中的每个对象？

Answer 1

将响应转换为 json 后，您可以只使用关键属性。

for result in data['results']:
    print("id: {}, title: {}".format(result['id'], result['title']))

正如您所提到的，您可以使用 json.load 将字符串转换为字典。但如果您使用 requests库，只需使用response.json即可获取所需格式的数据。