Question

json数据：

    [
       {
            "DeviceInstanceId": 5,
            "IsResetNeeded": null,
            "ProductType": "12345",
            "Product": {
                "Family": "12345"
            },
            "Device": {
                "DeviceFirmwareUpdate": {
                    "DeviceUpdateStatus": null,
                    "DeviceUpdateInProgress": null,
                    "DeviceUpdateProgress": null,
                    "LastDeviceUpdateId": null
                },
                "ManualAdded": {
                    "Value": false
                },
                "Location":{
                    "Value":"bangalore"
                }
         }
    ]

如何使用python验证上述json数据中是否存在“value”键。如果上面的json数据中没有“value”键，那么我需要验证json数据格式应该如下所示

[
       {
            "DeviceInstanceId": 5,
            "IsResetNeeded": null,
            "ProductType": "12345",
            "Product": {
                "Family": "12345"
            },
            "Device": {
                "DeviceFirmwareUpdate": {
                    "DeviceUpdateStatus": null,
                    "DeviceUpdateInProgress": null,
                    "DeviceUpdateProgress": null,
                    "LastDeviceUpdateId": null
                },
                "ManualAdded": false,

                "Location":"bangalore"

         }
    ]

更新了json数据

[{
    "Id": "12",
    "Type": "DevicePropertyChangedEvent",
    "Payload": [{
        "DeviceType": "producttype",
        "DeviceId": 2,
        "IsFast": false,
        "Payload": {
            "DeviceInstanceId": 2,
            "IsResetNeeded": false,
            "ProductType": "product",
            "Product": {
                "Family": "home"
            },
            "Device": {
                "DeviceFirmwareUpdate": {
                    "DeviceUpdateStatus": null,
                    "DeviceUpdateInProgress": null,
                    "DeviceUpdateProgress": null,
                    "LastDeviceUpdateId": null
                },
                "ManualAdded": false,
                "Name": {
                    "Value": "Jigital60asew",
                    "IsUnique": true
                },
                "State": null,
                "Location": "bangalore",
                "Serial": null,
                "Version": "2.0.1.100"
            }
        }
    }]
}]

更新了json数据，请查看...对于更新的json，应该修改已接受的答案。请帮助

我该如何验证？

Answer 1

以下是要解决的两个问题。

遍历json中的所有元素
如果值包含密钥"Value"

import json
from collections import OrderedDict


# solve first issue    
def walk(node):
    for key, item in node.items():
        if isinstance(item, dict) and 'Value' in item:
            # I don't understand what is your 'verify' mean
            # I just change the value, you should 'verify' it here
            node[key] = change_if_value_exist(item)
        elif isinstance(item, dict):
            walk(item)


# solve second issue   
def change_if_value_exist(d):
    if isinstance(d, dict):
        if 'Value' in d:
            return d['Value']
    return d    

if __name__ == '__main__':
    # json_txt is your input text 
    json_data = json.loads(json_txt, object_pairs_hook=OrderedDict)
    walk(json_data[0])
    new_json = json.dumps(json_data, indent=4)
    print(new_json)

Answer 2

要验证记录是否采用其中一种格式，您可以执行以下操作：

代码：

def validate_record_schema(record):
    device = record.get('Device', {})
    manual_added = device.get('ManualAdded', None)
    location = device.get('Location', None)
    if isinstance(manual_added, dict) and isinstance(location, dict):
        if 'Value' in manual_added and 'Value' in location:
            return True
    return isinstance(manual_added, bool) and isinstance(location, str)

测试代码：

data = [
    {
        "DeviceInstanceId": 5,
        "IsResetNeeded": None,
        "ProductType": "12345",
        "Product": {
            "Family": "12345"
        },
        "Device": {
            "DeviceFirmwareUpdate": {
                "DeviceUpdateStatus": None,
                "DeviceUpdateInProgress": None,
                "DeviceUpdateProgress": None,
                "LastDeviceUpdateId": None
            },
            "ManualAdded": {
                "Value": False
            },
            "Location": {
                "Value": "bangalore"
            }
        }
    },
    {
        "DeviceInstanceId": 5,
        "IsResetNeeded": None,
        "ProductType": "12345",
        "Product": {
            "Family": "12345"
        },
        "Device": {
            "DeviceFirmwareUpdate": {
                "DeviceUpdateStatus": None,
                "DeviceUpdateInProgress": None,
                "DeviceUpdateProgress": None,
                "LastDeviceUpdateId": None
            },
            "ManualAdded": False,
            "Location": "bangalore"
        }
    },
    {
        "DeviceInstanceId": 5,
        "IsResetNeeded": None,
        "ProductType": "12345",
        "Product": {
            "Family": "12345"
        },
        "Device": {
            "DeviceFirmwareUpdate": {
                "DeviceUpdateStatus": None,
                "DeviceUpdateInProgress": None,
                "DeviceUpdateProgress": None,
                "LastDeviceUpdateId": None
            },
            "ManualAdded": {
            },
            "Location": {
                "Value": "bangalore"
            }
        }
    },
    {
        "DeviceInstanceId": 5,
        "IsResetNeeded": None,
        "ProductType": "12345",
        "Product": {
            "Family": "12345"
        },
        "Device": {
            "DeviceFirmwareUpdate": {
                "DeviceUpdateStatus": None,
                "DeviceUpdateInProgress": None,
                "DeviceUpdateProgress": None,
                "LastDeviceUpdateId": None
            },
            "ManualAdded": 0,
            "Location": "bangalore"
        }
    }
]



print([validate_record_schema(r) for r in data])

结果：

[True, True, False, False]

如何使用python验证json数据格式和类型？

2 个答案:

代码：

测试代码：

结果：