【发布时间】：2018-11-11 18:24:05
【问题描述】：
我正在编写一个脚本，该脚本将从网站（Cisco Patches 站点）获取数据，并根据收到的数据，将其发布到另一个站点（ServiceNow 事件管理）。 POST 需要是带有特定键的 REST/JSON 才能工作。
我有足够的代码来获取数据，并且我有代码可以 POST 工作。
我很难将我从 GET 获得的数据转换成有效的 JSON 键值对映射到 POST。
我正在使用以下代码从 Cisco 网站获取新补丁列表。我得到了正确的数据，但如果数据不是我可以使用它以 JSON 格式发布到另一个工具的格式（使用不同的键，但返回信息中的值。
这行得通-
def getjson(ciscourl):
response = urllib.request.urlopen(ciscourl)
ciscodata = response.read().decode("utf-8")
return json.loads(ciscodata)
我得到的数据如下所示（这个查询产生了 2 个补丁）：
[{"identifier":"cisco-sa-20180521-cpusidechannel","title":"CPU Side-Channel Information Disclosure Vulnerabilities: May 2018","version":"1.5","firstPublished":"2018-05-22T01:00:00.000+0000","lastPublished":"2018-05-31T20:44:16.123+0000","workflowStatus":null,"id":1,"name":"Cisco Security Advisory","url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180521-cpusidechannel","severity":"Medium","workarounds":"No","cwe":null,"cve":"CVE-2018-3639,CVE-2018-3640","ciscoBugId":"","status":"Updated","summary":"On May 21, 2018, researchers disclosed two vulnerabilities that take advantage of the implementation of speculative execution of instructions on many modern microprocessor architectures to perform side-channel information disclosure attacks. These vulnerabilities could allow an unprivileged, ","totalCount":6,"relatedResource":[]},{"identifier":"cisco-sa-20180516-firepwr-pb","title":"Cisco Firepower Threat Defense Software Policy Bypass Vulnerability","version":"1.0","firstPublished":"2018-05-16T16:00:00.000+0000","lastPublished":"2018-05-16T16:00:00.000+0000","workflowStatus":null,"id":1,"name":"Cisco Security Advisory","url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180516-firepwr-pb","severity":"Medium","workarounds":"No","cwe":"CWE-693","cve":"CVE-2018-0297","ciscoBugId":"CSCvg09316","status":"New","summary":"A vulnerability in the detection engine of Cisco Firepower Threat Defense software could allow an unauthenticated, remote attacker to bypass a configured Secure Sockets Layer (SSL) Access Control (AC) policy to block SSL traffic.The vulnerability is due to the incorrect handling ","totalCount":6,"relatedResource":[]}]
我可以从中提取值，例如print(jarray.get('identifier'))，但我很难使用我定义的键将这些值映射到我自己的 JSON 映射中。因此，我返回的键 identifier 的值需要映射到我的 JSON 映射中名为 "node" 的键。
我试过json.loads、json.load、json.dump、json.dumps。每次错误都是属性类型错误。
这是我感到困惑的代码：
def createJson(l):
#try:
jsonarray = l
o_source = "CiscoUpdatePatchChecker"
o_node = (jsonarray.get('identifier')) #this does not work
o_metric_name = ("Critical")
o_type = ("test")
o_resource = ("test_resource")
o_description = jsonarray #this works
o_event_class = ("test event class")
o_additional_info = jsonarray
print ("-" * 50)
print (o_source, o_node, o_metric_name, o_type, o_resource, o_description, o_event_class, o_additional_info)
print ("-" * 50)
data = {"source": o_source, "node": o_node, "metric_name": o_metric_name, "type": o_type, "resource": o_resource, "event_class": o_event_class, "description": o_description, "additional_info": o_additional_info}
return json.dumps(data)
# except:
#pass
除此之外，其余代码只是将数据发布到正在运行的 ITSM。 -
def postjson(data):
# try:
url = posturl
auth = HTTPBasicAuth(username, password)
head = {'Content-type': 'application/json',
'Accept': 'application/json'}
payld = data
ret = requests.post(url, auth=auth , data=payld, headers=head)
# sys.stdout.write(ret.text)
returned_data = ret.json()
print(returned_data)
所以我的问题是将要返回的数据映射到 JSON 映射中的键：值对，并且我需要循环代码的次数与检索到的补丁数量一样多。我目前正计划在我的 main 函数中循环需要 POST 的 JSON 映射的数量。
现在，我只是获取我获得的所有数据并将我获得的所有数据映射到"description" 和"additional_info" 字段。这行得通，我可以很好地发布数据。
如果有人能指出如何处理我从 GET 请求中获得的数据的示例，这将对我有很大帮助。
【问题讨论】：
标签： python json python-3.x rest