1.Json是什么?
2.Json支持什么类型?
答案显而易见
Json就是嵌套对象
Json在python中支持列表,字典(当然也支持int,string…..,不过说这个也没多大必要)
很好,等等,列表,字典?我们在python中学过列表,字典,字典列表,列表字典,字典字典,那,我们可不可以把类对象转化为这些呢?
我可以很确定的告诉你,可以,并且,嵌套类都可以!!!
下面就来实战:
from flask import Flask import json app = Flask(__name__) class City(): def __init__(self,country,provider): self.country = country self.provider = provider class School(): def __init__(self,country,provider,name,nums): self.city = City(country,provider) self.name = name self.nums = nums @app.route(\'/method0\') def method0(): school = School(\'china\',\'shanxi\',\'wutaizhongxue\',\'2000\') s_temp0 = [school.city.country,school.city.provider,school.name,school.nums] return json.dumps(s_temp0) @app.route(\'/method1\') def method1(): school = School(\'china\',\'shanxi\',\'wutaizhongxue\',\'2000\') s_temp1 = {\'country\':school.city.country,\'provider\':school.city.provider,\'name\':school.name,\'nums\':school.nums} return json.dumps(s_temp1) @app.route(\'/method2\') def method2(): school = School(\'china\',\'shanxi\',\'wutaizhongxue\',\'2000\') s_temp2 = [{\'country\':school.city.country,\'provider\':school.city.provider},school.name,school.nums] return json.dumps(s_temp2) @app.route(\'/method3\') def method3(): school = School(\'china\',\'shanxi\',\'wutaizhongxue\',\'2000\') s_temp3 = {\'city\':[school.city.country,school.city.provider],\'name\':school.name,\'nums\':school.nums} return json.dumps(s_temp3) @app.route(\'/method4\') def method4(): school = School(\'china\',\'shanxi\',\'wutaizhongxue\',\'2000\') s_temp4 = {\'city\':{\'country\':school.city.country,\'provider\':school.city.provider},\'name\':school.name,\'nums\':school.nums} return json.dumps(s_temp4) if __name__ == \'__main__\': app.run(debug=True)
执行效果:
很多人会说,第五种才是我想要的,前面四种不是标准的json数据,刚开始确实是这样认为的,但是。。。
1.如果你处理的两个嵌套类是数据库的呢?假比如一对多的关系型数据库,method3不是一个很好的选择么?
2.如果你处理的两个嵌套类是包含关系呢?method2不是一个很好的选择么?
以上这篇Python 之 Json序列化嵌套类方式就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持自学编程网。