我正在尝试解析Web服务并检索某些记录，但是我一直收到具有多个对象的响应的KeyError。这些记录是按时间间隔返回的，所以有时我可能会收到一条记录而其他记录可能会收到300条记录。如果我收到一条记录，我的代码逻辑就会起作用，如果有多个项目则代码不起作用。
以下是一个带有一个对象的输出示例。
{
"status": {
"code": 311,
"message": "Service Request Successfully Queried.",
"cause": ""
},
"Response": {
"NumOutputObjects": "1",
"ListOfServiceRequest": {
"ServiceRequest": [
{
"AddressVerified": "Y",
"SRNumber": "1-13967451",
"SRType": "Service Not Complete",
"CreatedDate": "05/08/2015 10:00:38",
"UpdatedDate": "05/08/2015 10:00:49",
"IntegrationId": "05082015100148678",
"Status": "Open",
"CreatedByUserLogin": "PROXYE",
"UpdatedByUserLogin": "PROXYE",
"Anonymous": "N",
"Zipcode": "90032",
"Latitude": "34.0843242531",
"Longitude": "-118.171015007",
"CustomerAccessNumber": "",
"LADWPAccountNo": "",
"NewContactFirstName": "jj",
"NewContactLastName": "rambo",
"NewContactPhone": "",
"NewContactEmail": "",
"ParentSRNumber": "1-10552271",
"Priority": "Normal",
"Language": "",
"ReasonCode": "",
"ServiceDate": "",
"Source": "",
"ClosedDate": "",
"Email": "",
"FirstName": "",
"HomePhone": "",
"LastName": "",
"LoginUser": "",
"ResolutionCode": "",
"SRUnitNumber": "",
"MobilOS": "",
"SRAddress": "5163 E TEMPLETON ST, 90032",
"SRAddressName": "",
"SRAreaPlanningCommission": "East Los Angeles APC",
"SRCommunityPoliceStation": "CENTRAL BUREAU",
"SRCouncilDistrictMember": "Jose Huizar",
"SRCouncilDistrictNo": "14",
"SRDirection": "E",
"SRNeighborhoodCouncilId": "48",
"SRNeighborhoodCouncilName": "LA-32 NC",
"SRStreetName": "TEMPLETON",
"SRSuffix": "ST",
"SRTBColumn": "F",
"SRTBMapGridPage": "595",
"SRTBRow": "6",
"SRXCoordinate": "6509897",
"SRYCoordinate": "1853117",
"AssignTo": "NC",
"Assignee": "NC eWaste Supervisor 01",
"Owner": "BOS",
"ParentSRStatus": "Open",
"ParentSRType": "Electronic Waste",
"ParentSRLinkDate": "05/08/2015 10:00:39",
"ParentSRLinkUser": "PROXYE",
"SRAreaPlanningCommissionId": "5",
"SRCommunityPoliceStationAPREC": "HOLLENBECK",
"SRCommunityPoliceStationPREC": "4",
"SRCrossStreet": "",
"ActionTaken": "",
"SRCity": "",
"RescheduleCounter": "",
"SRHouseNumber": "5163",
"SourceofRequestCouncil": "",
"CCBPremiseType": "",
"ContainerBlackCount": "",
"ContainerBrownCount": "",
"SRIntersectionDirection": "",
"SRApproximateAddress": "N",
"ContainerGreenCount": "",
"OtherBureauName": "",
"AssigneeName": "",
"AssigneeOrganization": "E-Waste, NC",
"AnotherBureauEmailId": "",
"ListOfLa311BarricadeRemoval": {},
"ListOfLa311BulkyItem": {},
"ListOfLa311DeadAnimalRemoval": {},
"ListOfLa311GraffitiRemoval": {},
"ListOfLa311InformationOnly": {},
"ListOfLa311MultipleStreetlightIssue": {},
"ListOfLa311SingleStreetlightIssue": {},
"ListOfLa311SrPhotoId": {
"La311SrPhotoId": []
},
"ListOfLa311BusPadLanding": {},
"ListOfLa311CurbRepair": {},
"ListOfLa311Flooding": {},
"ListOfLa311GeneralStreetInspection": {},
"ListOfLa311GuardWarningRailMaintenance": {},
"ListOfLa311GutterRepair": {},
"ListOfLa311LandMudSlide": {},
"ListOfLa311Pothole": {},
"ListOfLa311Resurfacing": {},
"ListOfLa311SidewalkRepair": {},
"ListOfLa311StreetSweeping": {},
"ListOfLa311BeesOrBeehive": {},
"ListOfLa311MedianIslandMaintenance": {},
"ListOfLa311OvergrownVegetationPlants": {},
"ListOfLa311PalmFrondsDown": {},
"ListOfLa311StreetTreeInspection": {},
"ListOfLa311StreetTreeViolations": {},
"ListOfLa311TreeEmergency": {},
"ListOfLa311TreeObstruction": {},
"ListOfLa311TreePermits": {},
"ListOfLa311BrushItemsPickup": {},
"ListOfLa311Containers": {},
"ListOfLa311ElectronicWaste": {},
"ListOfLa311IllegalDumpingPickup": {},
"ListOfLa311ManualPickup": {},
"ListOfLa311MetalHouseholdAppliancesPickup": {},
"ListOfLa311MoveInMoveOut": {},
"ListOfLa311HomelessEncampment": {},
"ListOfLa311IllegalAutoRepair": {},
"ListOfLa311IllegalConstruction": {},
"ListOfLa311IllegalConstructionFence": {},
"ListOfLa311IllegalDischargeOfWater": {},
"ListOfLa311IllegalDumpingInProgress": {},
"ListOfLa311IllegalExcavation": {},
"ListOfLa311IllegalSignRemoval": {},
"ListOfLa311IllegalVending": {},
"ListOfLa311LeafBlowerViolation": {},
"ListOfLa311NewsRackViolation": {},
"ListOfLa311Obstructions": {},
"ListOfLa311TablesAndChairsObstructing": {},
"ListOfLa311GisLayer": {
"La311GisLayer": [
{
"A_Call_No": "",
"Area": "0",
"Day": "MONDAY",
"DirectionSuffix": "",
"DistrictAbbr": "",
"DistrictName": "NC",
"DistrictNumber": "",
"DistrictOffice": "",
"Fraction": "",
"R_Call_No": "",
"SectionId": "",
"ShortDay": "",
"StreetFrom": "",
"StreetTo": "",
"StreetLightId": "",
"StreetLightStatus": "",
"Type": "GIS",
"Y_Call_No": "",
"Name": "05082015100148678100",
"CommunityPlanningArea": "",
"LastUpdatedBy": "",
"BOSRadioHolderName": ""
}
]
},
"ListOfLa311ServiceRequestNotes": {
"La311ServiceRequestNotes": [
{
"CreatedDate": "05/08/2015 10:00:39",
"Comment": "Materials have been out in a normal collection area, unsure why driver missed the e-waste items.",
"CreatedByUser": "PROXYE",
"IsSrNoAvailable": "",
"CommentType": "External",
"Notification": "N",
"FeedbackSRType": "",
"IntegrationId": "050820151001486782",
"Date1": "",
"Date2": "",
"Date3": "",
"Text1": "",
"AnotherBureau": "",
"EmailAddress": "",
"ListOfLa311SrNotesAuditTrail": {}
},
{
"CreatedDate": "05/08/2015 10:00:39",
"Comment": "",
"CreatedByUser": "PROXYE",
"IsSrNoAvailable": "",
"CommentType": "Address Comments",
"Notification": "N",
"FeedbackSRType": "",
"IntegrationId": "050820151001486781",
"Date1": "",
"Date2": "",
"Date3": "",
"Text1": "",
"AnotherBureau": "",
"EmailAddress": "",
"ListOfLa311SrNotesAuditTrail": {}
}
]
},
"ListOfLa311SubscribeDuplicateSr": {},
"ListOfChildServiceRequest": {},
"ListOfLa311BillingCsscAdjustment": {},
"ListOfLa311BillingEccAdjustment": {},
"ListOfLa311BillingRsscAdjustment": {},
"ListOfLa311BillingRsscExemption": {},
"ListOfLa311SanitationBillingBif": {},
"ListOfLa311SanitationBillingCssc": {},
"ListOfLa311SanitationBillingEcc": {},
"ListOfLa311SanitationBillingLifeline": {},
"ListOfLa311SanitationBillingRssc": {},
"ListOfLa311SanitationBillingSrf": {},
"ListOfLa311DocumentLog": {},
"ListOfAuditTrailItem2": {
"AuditTrailItem2": [
{
"Date": "05/08/2015 10:00:49",
"EmployeeLogin": "SADMIN",
"Field": "Assignee",
"NewValue": "NC eWaste Supervisor 01",
"OldValue": ""
}
]
},
"ListOfLa311GenericBc": {
"La311GenericBc": [
{
"ATTRIB_08": "",
"NAME": "05082015100148678100",
"PAR_ROW_ID": "1-8BDCR",
"ROW_ID": "1-8BOCG",
"TYPE": "GIS",
"ATTRIB_16": "",
"ListOfLa311GenericbcAuditTrail": {}
},
{
"ATTRIB_08": "",
"NAME": "05082015100148678",
"PAR_ROW_ID": "1-8BDCR",
"ROW_ID": "1-8BOCJ",
"TYPE": "Service Not Complete",
"ATTRIB_16": "",
"ListOfLa311GenericbcAuditTrail": {}
}
]
},
"ListOfLa311ServiceNotComplete": {
"La311ServiceNotComplete": [
{
"ContainerLocation": "",
"ContainerType": "",
"DriverFirstName": "",
"DriverLastName": "",
"MissedCollectionService": "Electronic Waste",
"OtherServiceMissedReason": "",
"ServiceDateRendered": "",
"ServiceMissedReason": "I'm not sure",
"TruckNo": "",
"Type": "Service Not Complete",
"WireBasketLocation": "",
"LastUpdatedBy": "",
"Name": "05082015100148678"
}
]
},
"ListOfLa311Other": {},
"ListOfLa311WeedAbatementForPrivateParcels": {},
"ListOfLa311SanitationBillingInquiry": {}
}
]
}
}
}
代码如下;
data2 = jsonpickle.decode((f2.read()))
Start = datetime.datetime.now()
data2 = jsonpickle.encode(data2)
url2 = "myURL"
headers2 = {'Content-type': 'text/plain', 'Accept': '/'}
r2 = requests.post(url2, data=data2, headers=headers2)
decoded2 = json.loads(r2.text)
try:
r2
except requests.exceptions.ConnectTimeout as e:
print "Too slow Mojo!"
items = []
for sr in decoded2['Response']['ListOfServiceRequest']['ServiceRequest']:
SRAddress = sr['SRAddress']
Latitude = sr['Latitude']
Longitude = sr['Longitude']
ReasonCode = sr['ReasonCode']
SRNumber = sr['SRNumber']
FirstName = sr['FirstName']
LastName = sr['LastName']
ResolutionCode = sr['ResolutionCode']
HomePhone = sr['HomePhone']
CreatedDate = sr['CreatedDate']
UpdatedDate = sr['UpdatedDate']
CreatedDate = datetime.datetime.strptime(CreatedDate, "%m/%d/%Y %H:%M:%S")
UpdatedDate = datetime.datetime.strptime(UpdatedDate, "%m/%d/%Y %H:%M:%S")
print SRAddress
print SRNumber
ItemInfo = " "
for ew in sr["ListOfLa311ServiceRequestNotes"][u"La311ServiceRequestNotes"]:
Comment = ew['Comment']
print Comment
输出Materials have been out in a normal collection area, unsure why driver missed the e-waste items.
如果我将上面的逻辑用于返回多个对象的响应，则会收到KeyError值，并且无法访问我要解析的数组。
返回多个对象的代码示例;
我使用时的输出;如果我尝试按照CommodityType = sr['ListOfLa311ElectronicWaste']['ElectronicWasteType']下面的
for sr in decoded2['Response']['ListOfServiceRequest']['ServiceRequest']:
CommodityType = sr['ListOfLa311ElectronicWaste']
# ItemType = sr['ElectronicWestType']
# DriverFirstName = sr ['DriverFirstName']
# DriverLastName = sr ['DriverLastName']
# ItemCount = sr['ItemCount']
# ItemInfo += '{0}, {1}, '.format(ItemType, ItemCount)
# ParentNumber = sr['Name']
#
print CommodityType
{u'La311ElectronicWaste': [{u'IllegallyDumped': u'N', u'OtherElectronicWestType': u'hash', u'ItemCount': u'5', u'Name': u'6a31f058-ece1-4e7d-b682-7d9052a512f4', u'MobileHomeSpace': u'', u'DriverLastName': u'', u'ActiveStatus': u'Y', u'DriverFirstName': u'', u'LastUpdatedBy': u'', u'GatedCommunityMultifamilyDwelling': u'Outside the main gate', u'IllegalDumpCollectionLoc': u'', u'ElectronicWestType': u'Other', u'CollectionLocation': u'Gated Community', u'Type': u'Electronic Waste', u'ServiceDateRendered': u'', u'TruckNo': u''}]}
{u'La311ElectronicWaste': [{u'IllegallyDumped': u'Y', u'OtherElectronicWestType': u'', u'ItemCount': u'5', u'Name': u'3f4d9d20-a712-4be3-822f-e6a45219c1cf', u'MobileHomeSpace': u'', u'DriverLastName': u'', u'ActiveStatus': u'Y', u'DriverFirstName': u'', u'LastUpdatedBy': u'', u'GatedCommunityMultifamilyDwelling': u'', u'IllegalDumpCollectionLoc': u'Cul De Sac', u'ElectronicWestType': u'Electronic Equipment', u'CollectionLocation': u'Alley', u'Type': u'Electronic Waste', u'ServiceDateRendered': u'', u'TruckNo': u''}]}
如何以与处理单个输出相同的方式处理多个输出？
答案 0 :(得分：0)
你还没有提供一个完全运行的程序，但我猜你正在获取一个对象列表，你需要遍历列表，然后按照你对单个项目的方式索引每个对象。如果我将您粘贴的对象的两个副本放在一个列表中并将其存储在文件ìnput.json中，我需要读取每个对象，如下所示：
import json
with open("input.json") as f:
data = json.load(f)
for obj in data:
for service_request in obj["Response"]['ListOfServiceRequest']['ServiceRequest']:
print service_request # obviously do something useful instead
答案 1 :(得分：0)
我认为嵌套循环可以满足您的需求。 sr是外循环。 ew应该是嵌套在sr中的内部循环 你要做的就是确定第二个循环。
data2 = jsonpickle.decode((f2.read()))
Start = datetime.datetime.now()
data2 = jsonpickle.encode(data2)
url2 = "myURL"
headers2 = {'Content-type': 'text/plain', 'Accept': '/'}
r2 = requests.post(url2, data=data2, headers=headers2)
decoded2 = json.loads(r2.text)
try:
r2
except requests.exceptions.ConnectTimeout as e:
print "Too slow Mojo!"
items = []
for sr in decoded2['Response']['ListOfServiceRequest']['ServiceRequest']:
SRAddress = sr['SRAddress']
Latitude = sr['Latitude']
Longitude = sr['Longitude']
ReasonCode = sr['ReasonCode']
SRNumber = sr['SRNumber']
FirstName = sr['FirstName']
LastName = sr['LastName']
ResolutionCode = sr['ResolutionCode']
HomePhone = sr['HomePhone']
CreatedDate = sr['CreatedDate']
UpdatedDate = sr['UpdatedDate']
CreatedDate = datetime.datetime.strptime(CreatedDate, "%m/%d/%Y %H:%M:%S")
UpdatedDate = datetime.datetime.strptime(UpdatedDate, "%m/%d/%Y %H:%M:%S")
print SRAddress
print SRNumber
ItemInfo = " "
for ew in sr["ListOfLa311ServiceRequestNotes"][u"La311ServiceRequestNotes"]:
Comment = ew['Comment']
print Comment
for ew in sr["ListOfLa311ElectronicWaste"][u"La311ElectronicWaste"]:
IllegallyDumped = ew['IllegallyDumped']
print IllegallyDumped
我认为问题是ListOfLa311ElectronicWaste是另一个列表 - 所以你需要遍历这个以访问它的元素
答案 2 :(得分：0)
我解决了这个问题，这个帖子是一个很大的参考 Decoding nested JSON with multiple 'for' loops
for sr in ElectronicType:
for illegaldump in ElectronicType['La311ElectronicWaste']:
illegalewaste = illegaldump['IllegallyDumped']
Y
N
N
N
N
N
Y
Y
N
Y