Python自定义类对象序列化为Json串（代码示例）

之前已经实现了Python: Json串反序列化为自定义类对象，这次来实现了Json的序列化。

测试代码和结果如下：

import Json.JsonTool
class Score:
 math = 0
 chinese = 0
class Book:
 name = ''
 type = ''
class Student:
 id = ''
 name = ''
 score = Score()
 books = [Book()]
student = Student()
json_data = '{"id":"123", "name":"kid", "score":{"math":100, "chinese":98}, ' 
 '"books":[{"name":"math", "type":"study"}, ' 
 '{"name":"The Little Prince", "type":"literature"}]} '
Json.JsonTool.json_deserialize(json_data, student)
print(student.name)
print(student.score.math)
print(student.books[1].name)
student_str = Json.JsonTool.json_serialize(student)
print(student_str)
input("
按回车键退出。")

运行结果：

kid100The Little Prince
{"books": [{"name": "math", "type": "study"}, {"name": "The Little Prince", "type": "literature"}], "id": "123", "name": "kid", "score": {"chinese": 98, "math": 100}}

按回车键退出。

实现代码如下：

def json_serialize(obj):
 obj_dic = class2dic(obj)
 return json.dumps(obj_dic)


def class2dic(obj):
 obj_dic = obj.__dict__
 for key in obj_dic.keys():
 value = obj_dic[key]
 obj_dic[key] = value2py_data(value)
 return obj_dic


def value2py_data(value):
 if str(type(value)).__contains__('__main__'):
 # value 为自定义类
 value = class2dic(value)
 elif str(type(value)) == "<class 'list'>":
 # value 为列表
 for index in range(0, value.__len__()):
 value[index] = value2py_data(value[index])
 return value