Question

我花了几个小时，尝试了所有在网上找到的东西，拉了一些留在我头上的头发... 我已将此JSON发送到我正在编写的Flask Web服务中：

{'jsonArray': '[
    {
        "nom":"0012345679",
        "Start":"2018-08-01",
        "Finish":"2018-08-17",
        "Statut":"Validee"
    },
    {
        "nom":"0012345679",
        "Start":"2018-09-01",
        "Finish":"2018-09-10",
        "Statut":"Demande envoyée au manager"
    },
    {
        "nom":"0012345681",
        "Start":"2018-04-01",
        "Finish":"2018-04-08",
        "Statut":"Validee"
    },
    {
        "nom":"0012345681",
        "Start":"2018-07-01",
        "Finish":"2018-07-15",
        "Statut":"Validee"
    }
    ]'}

我只想遍历记录：

app = Flask(__name__)

@app.route('/graph', methods=['POST'])
def webhook():

    if request.method == 'POST':
        req_data = request.get_json()
        print(req_data) #-> shows JSON that seems to be right
        ##print(type(req_data['jsonArray']))
        #j1 = json.dumps(req_data['jsonArray'])
        #j2 = json.loads(req_data['jsonArray'])
        #data = json.loads(j1)
        #for rec in data:
        #    print(rec) #-> This seems to consider rec as one of the characters of the whole JSON string, and prints every character one by one
        #for key in data:
        #     value = data[key]
        #     print("The key and value are ({}) = ({})".format(key, value)) #-> TypeError: string indices must be integers


        for record in req_data['jsonArray']:
            for attribute, value in rec.items(): #-> Gives error 'str' object has no attribute 'items'
                print(attribute, value)

我相信我在JSON对象，python dict对象，字符串之间迷路了，但我不知道自己缺少什么。我确实试图将通过json.dumps和json.loads方法接收的JSON放入，但仍然没有。我想念什么??

我只是想遍历每条记录以创建另一个python对象，将其馈入这样的图表库中：

df = [dict(Task="0012345678", Start='2017-01-01', Finish='2017-02-02', Statut='Complete'),
      dict(Task="0012345678", Start='2017-02-15', Finish='2017-03-15', Statut='Incomplete'),
      dict(Task="0012345679", Start='2017-01-17', Finish='2017-02-17', Statut='Not Started'),
      dict(Task="0012345679", Start='2017-01-17', Finish='2017-02-17', Statut='Complete'),
      dict(Task="0012345680", Start='2017-03-10', Finish='2017-03-20', Statut='Not Started'),
      dict(Task="0012345680", Start='2017-04-01', Finish='2017-04-20', Statut='Not Started'),
      dict(Task="0012345680", Start='2017-05-18', Finish='2017-06-18', Statut='Not Started'),
      dict(Task="0012345681", Start='2017-01-14', Finish='2017-03-14', Statut='Complete')]

Answer 1

整个内容都用单引号引起来，这意味着它是一个字符串，您需要对其进行解析。

for record in json.loads(req_data['jsonArray']):

看看您评论的代码，您这样做：

j1 = json.dumps(req_data['jsonArray'])
data = json.loads(j1)

在字符串上使用json.dumps是错误的主意，而且json.loads(json.dumps(x))与x相同，因此可以将您带回到开始的地方，即{{1} }与data（一个字符串）相同。

这是正确的主意：

req_data['jsonArray']

但您从未使用过j2 = json.loads(req_data['jsonArray'])。

如您所见，遍历字符串会为您提供字符串的每个字符。

另一个Python遍历JSON数组

1 个答案: