类对象序列化为json串，json串反序列化为类对象

1.类对象序列化为json串：

方法一：

class P(object):

def __init__(self,name,age,sex):

self.name=name

self.age=age

self.sex=sex

def obj_json(self,obj_instance):

return{

"name":obj_instance.name,

"age":obj_instance.age,

"sex":obj_instance.sex}

p=P("tom",21,"male")

print json.dumps(p,default=p.obj_json)

方法二：

class P(object):

def __init__(self,name,age,sex):

self.name=name

self.age=age

self.sex=sex

p=P("jim",34,"male")

print p.__dict__

print json.dumps(p,default=lambda p:p.__dict__)

print json.dumps(p,default=lambda P:P.__dict__)

2.json串反序列化为类对象：

class P(object):

def __init__(self,name,age,sex):

self.name=name

self.age=age

self.sex=sex

p=P("lucy",21,"female")

json_str='{"name":"lucy","age":21,"sex":"female"}'

def jsonToClass(p):

return P(p["name"],p["age"],p["sex"])

print json.loads(json_str,object_hook=jsonToClass)

print p.name