使用Pyshark将JSON p中的键和值配对

Question

我正在尝试使用Pyshark解析PCAP文件。有些数据包中有JSON，我正试图用匹配的方法打印出来关键：价值。你知道吗

这就是我目前要测试的内容：

import pyshark

packets = pyshark.FileCapture('cap.pcapng')
pack = packets[1] #get the packet that has JSON

print(pack.json.get_field_value('app')

当这样做时，我得到None打印。你知道吗

如果我打印整个JSON层，我会得到如下数据：

    Object
    Member Key: anonymousId
    String value: f268204c-5719-43ce-9a5e-094d8f3df6b8
    Key: anonymousId
    True value
    Object
    Object
    Object
    Object
    Object
    Object
    Member Key: context
    Member Key: app
    Member Key: app_name
    Member Key: app_platform
    Member Key: app_version
    Member Key: device
    Member Key: adTrackingEnabled
    Member Key: advertisingId
    Member Key: id
    Member Key: manufacturer
    Member Key: model
    Member Key: resolution
    Member Key: type
    Member Key: version
    Member Key: ip
    Member Key: library
    Member Key: name
    Member Key: version
    Member Key: locale
    Member Key: os
    Member Key: name
    Member Key: version
    Member Key: primary_business_unit
    Member Key: secondary_business_unit
    Member Key: traits
    Member Key: entitlements
    Member Key: mvpd
    Member Key: userAgent
    Member Key: event
    Member Key: properties
    Member Key: type
    Member Key: userId
    String value: Fox Now
    String value: foxnow
    String value: roku
    String value: 3.18.0
    String value: 622ac229-c26e-5318-89bd-b281da9bed32
    String value: 1de01830-d4bb-5d12-9d86-f81da8d12698
    String value: Roku
    String value: 3600X
    String value: 1080p
    String value: roku
    String value: 249.10E04111A
    String value: 71.120.154.30
    String value: SegmentAnalyticsService.brs
    String value: 3.18.0 (11624)
    String value: en-US
    String value: Roku
    String value: 9.10 build 4111
    String value: fng
    String value: fox
    String value: btn-btn2go,fbc-fox,FoxBusiness,foxdep,FoxNews,fs1,fs2,fx,fxm,fxx,ngc,ngw
    String value: verizon
    String value: Roku/DVP-9.10 (249.10E04111A)
    String value: Live TV Section Viewed
    String value: track
    String value: MTM0OTA5MDktNWE1MC00YTg4LWJhNWItYzdmMDA1N2UyYjQz
    Key: app
    Key: app_name
    Key: app_platform
    Key: app_version
    Key: adTrackingEnabled
    Key: advertisingId
    Key: id
    Key: manufacturer
    Key: model
    Key: resolution
    Key: type
    Key: version
    Key: device
    Key: ip
    Key: name
    Key: version
    Key: library
    Key: locale
    Key: name
    Key: version
    Key: os
    Key: primary_business_unit
    Key: secondary_business_unit
    Key: entitlements
    Key: mvpd
    Key: traits
    Key: userAgent
    Key: context
    Key: event
    Key: properties
    Key: type
    Key: userId

这就是JSON的样子。。你知道吗

我希望能够遍历JSON中的每个值并打印它所包含的值和键。你知道吗

所以我想打印JSON输出与它匹配的基本情况。你知道吗

我尝试过谷歌搜索，却找不到任何对我有用的例子。你知道吗