Question

写了一个python脚本来收集网站列表的响应头。现在，我有json文件，其中包含response header网站。 1是ID (key)，其余所有values都是针对特定网址解析的响应标头。

 {
    "1": {
        "transfer-encoding": "chunked", 
        "set-cookie": "lng=hi; path=/; expires=Tue, 14-Feb-2017 08:54:15 GMT; domain=.ucoz.net;, uSID=HYv2D8GG3nmptnLPRZbxuxBHi5awMLA8pwrSRf2aE8t0l9%3BEeTKJkgoo; path=/; domain=www.ucoz.net;", 
        "keep-alive": "timeout=15", 
        "server": "nginx/1.8.0", 
        "connection": "keep-alive", 
        "date": "Mon, 15 Feb 2016 08:54:15 GMT", 
        "content-type": "text/html; charset=UTF-8"
    }
}

如何获取密钥1

的服务器值

结果：

1,nginx/1.8.0

Answer 1

使用JSON encoder解析文件中的数据：

import json
from pprint import pprint

with open('json_data.json') as json_data:    
    data = json.load(json_data)

pprint(data)
# now you can traverse your data dict....
print(data['1']['server'])

Answer 2

json.loads：将data（包含JSON的实例）反序列化为Python对象。

>>> import json
>>> data = ''' {
...     "1": {
...         "transfer-encoding": "chunked", 
...         "set-cookie": "lng=hi; path=/; expires=Tue, 14-Feb-2017 08:54:15 GMT; domain=.ucoz.net;, uSID=HYv2D8GG3nmptnLPRZbxuxBHi5awMLA8pwrSRf2aE8t0l9%3BEeTKJkgoo; path=/; domain=www.ucoz.net;", 
...         "keep-alive": "timeout=15", 
...         "server": "nginx/1.8.0", 
...         "connection": "keep-alive", 
...         "date": "Mon, 15 Feb 2016 08:54:15 GMT", 
...         "content-type": "text/html; charset=UTF-8"
...     }
... }'''
>>> d = json.loads(data)
>>> d['1']['server']
u'nginx/1.8.0'

Python：从JSON获取key的值

2 个答案: