我的班级结构如下 –
class HelloWorld (object):
def __init__(self, name, i, id):
self.name = name
self.i = i
self.id = id
我在创造一个物体
p = HelloWorld('pj', 3456, '1234')
并将此对象传递给定义,其中我使用jsonpickle.encode和jsonpickle.decode如下
>>>print(type(p))
<class 'HelloWorld'>
>>>x = jsonpickle.encode(p)
>>>print(x)
{"i": 3456, "name": "pj", "py/object": "__builtin__.HelloWorld", "id": "1234"}
>>>y = jsonpickle.decode(x)
>>>print(type(y))
<class 'dict'>
我不明白为什么我无法将它解码回原始对象,即使区别py /对象也存在.
任何人都可以建议我做错了什么?
添加生成上述用例的动态类的代码.
def _create_pojo(self, pojo_class_name, param_schema):
#extracting the properties from the parameter 'schema'
pojo_properties = param_schema['properties']
#creating a list of property keys
pojo_property_list = []
for key in pojo_properties:
pojo_property_list.append(key)
source = \
"class %s (object):\n" % ( pojo_class_name )
source += " def __init__(self, %s" % ', '.join(pojo_property_list) +"):\n" #defining __init__ for the class
for prop in pojo_property_list: #creating a variable in the __init__ method for each property in the property list
source += " self.%s = %s\n" % (prop, prop)
#generating the class code
class_code = compile( source, "<generated class>", "exec" )
fakeglobals = {}
eval( class_code, {"object" : object}, fakeglobals )
result = fakeglobals[ pojo_class_name ]
result ._source = source
pprint.pprint(source)
self._object_types[ pojo_class_name ] = result
return result
最佳答案 这里的主要问题是,类在解码时不可用,因此无法将其解码为python对象.
根据JsonPickle文档(http://jsonpickle.github.io/#module-jsonpickle),对象必须可以通过模块全局访问,并且必须从对象继承(AKA新式类).
因此遵循以下配方,http://code.activestate.com/recipes/82234-importing-a-dynamically-generated-module/.使用此方法,您可以生成动态模块并动态加载类.通过这种方式解码类将是可访问的,因此您可以将其解码回python对象.