我在open62541库官方指南的第 11 章。html 版本在这里。在尝试任何自定义之前,我只想以最基本的方式尝试此功能,方法是将他们的示例 xml 文件“编译”成 C 代码,然后可以使用 GCC 编译并作为 OPC 服务器运行。(如果您想继续学习,请从主页下载完整的源代码——nodeset 编译器工具就在其中。)
我在基于 Debian 的环境中(仅限 CLI)。我复制了一份 myNS.xml 并将其直接保存在路径~/code/open62541-open62541-6249bb2/tools/nodeset_compiler/中,这也是本示例中我当前的工作目录。我尝试使用与教程中使用的完全相同的命令来使用节点集编译器:python ./nodeset_compiler.py --types-array=UA_TYPES --existing ../../deps/ua-nodeset/Schema/Opc .Ua.NodeSet2.xml --xml myNS.xml myNS
我得到的错误信息是这样的:
Traceback (most recent call last):
File "./nodeset_compiler.py", line 126, in <module>
ns.addNodeSet(xmlfile, True, typesArray=getTypesArray(nsCount))
File "/root/code/open62541-open62541-6249bb2/tools/nodeset_compiler/nodeset.py", line 224, in addNodeSet
nodesets = dom.parseString(fileContent).getElementsByTagName("UANodeSet")
File "/usr/lib/python2.7/xml/dom/minidom.py", line 1928, in parseString
return expatbuilder.parseString(string)
File "/usr/lib/python2.7/xml/dom/expatbuilder.py", line 940, in parseString
return builder.parseString(string)
File "/usr/lib/python2.7/xml/dom/expatbuilder.py", line 223, in parseString
parser.Parse(string, True)
xml.parsers.expat.ExpatError: syntax error: line 1, column 0
知道我可能做错了什么吗?
更新:
好的,我发现我的 Opc.Ua.NodeSet2.xml 文件有问题,我已更正。如果您跟随并想获取我拥有的文件的版本,您可以在此处获取。
但现在我有这个问题:
INFO:__main__:Preprocessing (existing) ../../deps/ua-nodeset/Schema/Opc.Ua.NodeSet2.xml
INFO:__main__:Preprocessing myNS.xml
Traceback (most recent call last):
File "./nodeset_compiler.py", line 178, in <module>
ns.allocateVariables()
File "/root/code/open62541-open62541-6249bb2/tools/nodeset_compiler/nodeset.py", line 322, in allocateVariables
n.allocateValue(self)
File "/root/code/open62541-open62541-6249bb2/tools/nodeset_compiler/nodes.py", line 291, in allocateValue
self.value.parseXMLEncoding(self.xmlValueDef, dataTypeNode, self)
File "/root/code/open62541-open62541-6249bb2/tools/nodeset_compiler/datatypes.py", line 161, in parseXMLEncoding
val = self.__parseXMLSingleValue(el, parentDataTypeNode, parent)
File "/root/code/open62541-open62541-6249bb2/tools/nodeset_compiler/datatypes.py", line 281, in __parseXMLSingleValue
extobj.value.append(extobj.__parseXMLSingleValue(ebodypart, parentDataTypeNode, parent, alias=None, encodingPart=e))
File "/root/code/open62541-open62541-6249bb2/tools/nodeset_compiler/datatypes.py", line 223, in __parseXMLSingleValue
alias=alias, encodingPart=enc[1], valueRank=enc[2] if len(enc)>2 else None)
File "/root/code/open62541-open62541-6249bb2/tools/nodeset_compiler/datatypes.py", line 198, in __parseXMLSingleValue
t.parseXML(xmlvalue)
File "/root/code/open62541-open62541-6249bb2/tools/nodeset_compiler/datatypes.py", line 330, in parseXML
self.value = int(unicode(xmlvalue.firstChild.data))
ValueError: invalid literal for int() with base 10: ''
更新_2:
我尝试在我的 Windows 笔记本电脑上做同样的事情,这是我得到的错误:
INFO:__main__:Preprocessing (existing) ../../deps/ua-nodeset/Schema/Opc.Ua.NodeSet2.xml
INFO:__main__:Preprocessing myNS.xml
Traceback (most recent call last):
File "./nodeset_compiler.py", line 178, in <module>
ns.allocateVariables()
File "C:\Users\ekstraaa\Source\open62541\open62541-open62541-6249bb2\tools\nodeset_compiler\nodeset.py", line 322, in allocateVariables
n.allocateValue(self)
File "C:\Users\ekstraaa\Source\open62541\open62541-open62541-6249bb2\tools\nodeset_compiler\nodes.py", line 291, in allocateValue
self.value.parseXMLEncoding(self.xmlValueDef, dataTypeNode, self)
File "C:\Users\ekstraaa\Source\open62541\open62541-open62541-6249bb2\tools\nodeset_compiler\datatypes.py", line 161, in parseXMLEncoding
val = self.__parseXMLSingleValue(el, parentDataTypeNode, parent)
File "C:\Users\ekstraaa\Source\open62541\open62541-open62541-6249bb2\tools\nodeset_compiler\datatypes.py", line 281, in __parseXMLSingleValue
extobj.value.append(extobj.__parseXMLSingleValue(ebodypart, parentDataTypeNode, parent, alias=None, encodingPart=e))
File "C:\Users\ekstraaa\Source\open62541\open62541-open62541-6249bb2\tools\nodeset_compiler\datatypes.py", line 223, in __parseXMLSingleValue
alias=alias, encodingPart=enc[1], valueRank=enc[2] if len(enc)>2 else None)
File "C:\Users\ekstraaa\Source\open62541\open62541-open62541-6249bb2\tools\nodeset_compiler\datatypes.py", line 198, in __parseXMLSingleValue
t.parseXML(xmlvalue)
File "C:\Users\ekstraaa\Source\open62541\open62541-open62541-6249bb2\tools\nodeset_compiler\datatypes.py", line 330, in parseXML
self.value = int(unicode(xmlvalue.firstChild.data))
ValueError: invalid literal for int() with base 10: '\n '