我已经将NIFI OPC UA [https://github.com/wadesalazar/NIFI-OPCUA]处理器与Apache Nifi 1.3集成在一起。我正在遵循此URL [https://community.hortonworks.com/articles/90355/collect-data-from-opc-ua-protocol.html]来开始使用。我已经从Windows上的prosys opc ua安装了仿真OPC服务器。
我能够从NIFI上的GetNodeIDs处理器中提取消息，并且splitText处理器用于逐行读取消息并发送到GetValue处理器，如示例所示，但是我的GetValue处理器不断抛出错误。
我试图在GetNodeIDs处理器中设置“开始节点”属性，但无法确定应设置什么节点属性，请在下面的模拟服务器示例数据中找到。
从模拟opc服务器收到的样本数据:
nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=61
nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=85
- nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=61
- nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2253
- - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2004
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2007
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2009
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2010
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2011
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2012
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=11489
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=11527
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2006
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2742
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2005
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2008
- - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2256
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2138
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2257
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2258
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2259
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2260
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2992
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2993
- - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2268
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2013
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2996
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2997
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=11192
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=11704
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2271
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2272
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2736
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2269
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2737
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=3704
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=11703
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2735
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=11702
- - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2274
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2020
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2275
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2290
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=3706
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2294
- - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2295
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2033
- - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2296
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2034
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=3709
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=11313
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=11314
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=11312
- - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=11492
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=11493
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=11494
- - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=11715
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=11645
- - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=12637
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=12581
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=12642
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=12672
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=12675
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=12641
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=12710
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=12639
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=12640
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=12711
- - ns=2;s=MyObjectsFolder
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=61
- - - ns=2;s=MyDevice
- - - ns=2;s=MyDevice
- - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2255
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=68
- - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2994
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=68
- - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2254
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=68
- - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=2267
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=68
- ns=2;s=MyObjectsFolder
- - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=61
- - ns=2;s=MyDevice
- - - ns=2;s=MyDeviceType
- - - ns=2;s=MyEnumObject
- - - ns=2;s=MyLevel
- - - ns=2;s=MyLevel
- - - ns=2;s=MyLevel.Alarm
- - - ns=2;s=MyMethod
- - - ns=2;s=MySwitch
- - ns=2;s=MyDevice
- - - ns=2;s=MyDeviceType
- - - ns=2;s=MyEnumObject
- - - ns=2;s=MyLevel
- - - ns=2;s=MyLevel
- - - ns=2;s=MyLevel.Alarm
- - - ns=2;s=MyMethod
- - - ns=2;s=MySwitch
- ns=3;s=StaticData
- - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=61
- - ns=3;s=AccessLevels
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=61
- - - ns=3;s=AccessLevelCurrentRead
- - - ns=3;s=AccessLevelCurrentReadNotUser
- - - ns=3;s=AccessLevelCurrentReadWrite
- - - ns=3;s=AccessLevelCurrentWrite
- - - ns=3;s=AccessLevelCurrentWriteNotUser
- - ns=3;s=AnalogItemArrays
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=61
- - - ns=3;s=ByteAnalogItemArray
- - - ns=3;s=DoubleAnalogItemArray
- - - ns=3;s=FloatAnalogItemArray
- - - ns=3;s=Int16AnalogItemArray
- - - ns=3;s=Int32AnalogItemArray
- - - ns=3;s=Int64AnalogItemArray
- - - ns=3;s=SByteAnalogItemArray
- - - ns=3;s=UInt16AnalogItemArray
- - - ns=3;s=UInt32AnalogItemArray
- - - ns=3;s=UInt64AnalogItemArray
- - ns=3;s=AnalogItems
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=61
- - - ns=3;s=ByteAnalogItem
- - - ns=3;s=DoubleAnalogItem
- - - ns=3;s=FloatAnalogItem
- - - ns=3;s=Int16AnalogItem
- - - ns=3;s=Int32AnalogItem
- - - ns=3;s=Int64AnalogItem
- - - ns=3;s=SByteAnalogItem
- - - ns=3;s=Sample Instrument Int32AnalogItem
- - - ns=3;s=UInt16AnalogItem
- - - ns=3;s=UInt32AnalogItem
- - - ns=3;s=UInt64AnalogItem
- - ns=3;s=DataItems
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=61
- - - ns=3;s=BooleanDataItem
- - - ns=3;s=ByteDataItem
- - - ns=3;s=ByteStringDataItem
- - - ns=3;s=DateTimeDataItem
- - - ns=3;s=DoubleDataItem
- - - ns=3;s=FloatDataItem
- - - ns=3;s=GUIDDataItem
- - - ns=3;s=Int16DataItem
- - - ns=3;s=Int32DataItem
- - - ns=3;s=Int64DataItem
- - - ns=3;s=SByteDataItem
- - - ns=3;s=StringDataItem
- - - ns=3;s=UInt16DataItem
- - - ns=3;s=UInt32DataItem
- - - ns=3;s=UInt64DataItem
- - - ns=3;s=XmlElementDataItem
- - ns=3;s=DeepFolder
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=61
- - - ns=3;s=DeepObject01
- - ns=3;s=MultiStateItems
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=61
- - - ns=3;s=MultiStateDiscreteItem
- - ns=3;s=StaticArrayVariables
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=61
- - - ns=3;s=BooleanArray
- - - ns=3;s=ByteArray
- - - ns=3;s=ByteStringArray
- - - ns=3;s=DateTimeArray
- - - ns=3;s=DoubleArray
- - - ns=3;s=FloatArray
- - - ns=3;s=GUIDArrayArray
- - - ns=3;s=Int16Array
- - - ns=3;s=Int32Array
- - - ns=3;s=Int64Array
- - - ns=3;s=LocalizedTextArray
- - - ns=3;s=QualifiedNameArray
- - - ns=3;s=SByteArray
- - - ns=3;s=StringArray
- - - ns=3;s=UInt16Array
- - - ns=3;s=UInt32Array
- - - ns=3;s=UInt64Array
- - - ns=3;s=VariantArray
- - - ns=3;s=XmlElementArray
- - ns=3;s=StaticVariables
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=61
- - - ns=3;s=Boolean
- - - ns=3;s=Byte
- - - ns=3;s=ByteString
- - - ns=3;s=DateTime
- - - ns=3;s=Double
- - - ns=3;s=Duration
- - - ns=3;s=Enumeration
- - - ns=3;s=Float
- - - ns=3;s=GUID
- - - ns=3;s=Image
- - - ns=3;s=ImageBMP
- - - ns=3;s=ImageGIF
- - - ns=3;s=ImageJPG
- - - ns=3;s=ImagePNG
- - - ns=3;s=Int16
- - - ns=3;s=Int32
- - - ns=3;s=Int64
- - - ns=3;s=Integer
- - - ns=3;s=LocaleId
- - - ns=3;s=LocalizedText
- - - ns=3;s=NodeId
- - - ns=3;s=Number
- - - ns=3;s=QualifiedName
- - - ns=3;s=SByte
- - - ns=3;s=String
- - - ns=3;s=Time
- - - ns=3;s=UInt16
- - - ns=3;s=UInt32
- - - ns=3;s=UInt64
- - - ns=3;s=UInteger
- - - ns=3;s=UtcTime
- - - ns=3;s=Variant
- - - ns=3;s=XmlElement
- - ns=3;s=TwoStateItems
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=61
- - - ns=3;s=TwoStateDiscreteItem
- ns=4;s=NonUaNodeComplianceTest
- - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=61
- - ns=4;s=ByteString
- - - ns=4;s=NonUaNodeDataItemType
- - ns=4;s=SByte
- - - ns=4;s=NonUaNodeDataItemType
- - ns=4;s=Time
- - - ns=4;s=NonUaNodeDataItemType
- - ns=4;s=String
- - - ns=4;s=NonUaNodeDataItemType
- - ns=4;s=Int16
- - - ns=4;s=NonUaNodeDataItemType
- - ns=4;s=Image
- - - ns=4;s=NonUaNodeDataItemType
- - ns=4;s=DateTime
- - - ns=4;s=NonUaNodeDataItemType
- - ns=4;s=LocalizedText
- - - ns=4;s=NonUaNodeDataItemType
- - ns=4;s=UtcTime
- - - ns=4;s=NonUaNodeDataItemType
- - ns=4;s=LocaleId
- - - ns=4;s=NonUaNodeDataItemType
- - ns=4;s=ImageGIF
- - - ns=4;s=NonUaNodeDataItemType
- - ns=4;s=Number
- - - ns=4;s=NonUaNodeDataItemType
- - ns=4;s=Int32
- - - ns=4;s=NonUaNodeDataItemType
- - ns=4;s=ImageBMP
- - - ns=4;s=NonUaNodeDataItemType
- - ns=4;s=UInteger
- - - ns=4;s=NonUaNodeDataItemType
- - ns=4;s=Boolean
- - - ns=4;s=NonUaNodeDataItemType
- - ns=4;s=UInt64
- - - ns=4;s=NonUaNodeDataItemType
- - ns=4;s=Enumeration
- - - ns=4;s=NonUaNodeDataItemType
- - ns=4;s=QualifiedName
- - - ns=4;s=NonUaNodeDataItemType
- - ns=4;s=GUID
- - - ns=4;s=NonUaNodeDataItemType
- - ns=4;s=Duration
- - - ns=4;s=NonUaNodeDataItemType
- - ns=4;s=Double
- - - ns=4;s=NonUaNodeDataItemType
- - ns=4;s=Variant
- - - ns=4;s=NonUaNodeDataItemType
- - ns=4;s=Integer
- - - ns=4;s=NonUaNodeDataItemType
- - ns=4;s=Float
- - - ns=4;s=NonUaNodeDataItemType
- - ns=4;s=ImagePNG
- - - ns=4;s=NonUaNodeDataItemType
- - ns=4;s=Int64
- - - ns=4;s=NonUaNodeDataItemType
- - ns=4;s=Byte
- - - ns=4;s=NonUaNodeDataItemType
- - ns=4;s=NodeId
- - - ns=4;s=NonUaNodeDataItemType
- - ns=4;s=XmlElement
- - - ns=4;s=NonUaNodeDataItemType
- - ns=4;s=UInt16
- - - ns=4;s=NonUaNodeDataItemType
- - ns=4;s=ImageJPG
- - - ns=4;s=NonUaNodeDataItemType
- - ns=4;s=UInt32
- - - ns=4;s=NonUaNodeDataItemType
- ns=5;s=85/0:Simulation
- - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=61
- - ns=5;s=Counter1
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=63
- - ns=5;s=Expression1
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=63
- - ns=5;s=Random1
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=63
- - ns=5;s=Sawtooth1
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=63
- - ns=5;s=SimulationServerNode11
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=63
- - ns=5;s=Sinusoid1
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=63
- - ns=5;s=Square1
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=63
- - ns=5;s=Triangle1
- - - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=63
- ns=6;s=MyBigNodeManager
- - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=61
- - ns=6;s=DataItem_0000
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0001
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0002
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0003
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0004
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0005
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0006
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0007
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0008
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0009
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0010
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0011
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0012
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0013
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0014
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0015
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0016
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0017
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0018
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0019
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0020
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0021
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0022
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0023
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0024
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0025
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0026
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0027
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0028
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0029
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0030
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0031
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0032
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0033
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0034
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0035
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0036
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0037
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0038
- - - ns=6;s=DataItemType
- - ns=6;s=DataItem_0039
- - - ns=6;s=DataItemType
异常(exception):
2017-07-25 18:03:10,189 ERROR [Timer-Driven Process Thread-8] c.k.nifi.nifi_opcua_bundle.GetValue GetValue[id=55c6ac28-015d-1000-076b-844ca709cc40] GetValue[id=55c6ac28-015d-1000-076b-844ca709cc40] failed to process due to java.lang.IllegalArgumentException: Invalid string representation of a nodeId: - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=63; rolling back session: {}
java.lang.IllegalArgumentException: Invalid string representation of a nodeId: - nsu=http%3A%2F%2Fopcfoundation.org%2FUA%2F;i=63
at org.opcfoundation.ua.builtintypes.NodeId.parseNodeId(NodeId.java:383)
at com.kentender.nifi.nifi_opcua_services.StandardOPCUAService.getValue(StandardOPCUAService.java:346)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.apache.nifi.controller.service.StandardControllerServiceInvocationHandler.invoke(StandardControllerServiceInvocationHandler.java:89)
at com.sun.proxy.$Proxy78.getValue(Unknown Source)
at com.kentender.nifi.nifi_opcua_bundle.GetValue$2.process(GetValue.java:160)
at org.apache.nifi.controller.repository.StandardProcessSession.write(StandardProcessSession.java:2529)
at com.kentender.nifi.nifi_opcua_bundle.GetValue.onTrigger(GetValue.java:156)
at org.apache.nifi.processor.AbstractProcessor.onTrigger(AbstractProcessor.java:27)
at org.apache.nifi.controller.StandardProcessorNode.onTrigger(StandardProcessorNode.java:1120)
at org.apache.nifi.controller.tasks.ContinuallyRunProcessorTask.call(ContinuallyRunProcessorTask.java:147)
at org.apache.nifi.controller.tasks.ContinuallyRunProcessorTask.call(ContinuallyRunProcessorTask.java:47)
at org.apache.nifi.controller.scheduling.TimerDrivenSchedulingAgent$1.run(TimerDrivenSchedulingAgent.java:132)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
最佳答案
'nsu = http％3A％2F％2Fopcfoundation.org％2FUA％2F; i = 63'表示ExpandedNodeId，因此Nifi代码应使用ExpandedNodeId.parseExpandedNodeId()代替NodeId.parseNodeId()。
或者，您需要先将ExpandedNodeId转换为NodeId，然后再将其传递给GetValue()。不幸的是，我对Nifi并不熟悉，因此我不确定这是正确的方法。
问题是由OPC UA“双重主义”引起的-某些服务(例如，浏览)提供了ExpandedNodeId引用，而其他服务(例如，读取)则希望获取NodeId实例。
ExpandedNodeId可以将 namespace 定义为URI(字符串中的“nsu”)或索引(字符串中的“ns”)，而NodeId可以仅将 namespace 定义为索引。
关于hadoop - Apache Nifi和OPC集成问题(GetValue处理器)，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/45306741/