如何用Django实现一个回吐请求参数的接口

在views.py文件

from django.shortcuts import render_to_response #返回页面用
from django.http import HttpResponse
import json
import re

#GET接口，返回全部URL参数二
def get_Info(request):
    result = {}
    if request.method == 'GET':
        for k, v in request.GET.items():
            result[k]= v
        result = json.dumps(result)
        return HttpResponse(result)
    else:
        return render_to_response('login.html')

#POST接口，根据header返回表单或body参数
def post_Info(request):
    if request.method == 'POST' and request.META.get('CONTENT_TYPE') == "application/x-www-form-urlencoded":
        params = ""
        username = request.POST.get('username')
        password = request.POST.get('password')
        card_id = request.POST.get('card_id')
        params = "用户名:"+username + "密码:" + password + "身份证:" + card_id
        # params = json.dumps(params)
        return HttpResponse(params)
    elif request.method == 'POST' and request.META.get('CONTENT_TYPE') == "application/json":
        params = ""
        params = json.loads(request.body)
        params = json.dumps(params)
        return HttpResponse(params)
    elif request.method == 'POST' and request.META.get('CONTENT_TYPE') == "application/json" and request.COOKIES['test_Cookie']!=None:
       return excu_Cookie(request.COOKIES['test_Cookie'])
    else:
        return render_to_response('post_data.html')
#优化一下表单post接口
def post_Info(request):
    params=""
    requestheader=reques.META.get('CONTENT_TYPE')
    if request.method == 'POST':
        if requestheader=='application/x-www-form-urlencoded':
           params=reques.POST
        elif requestheader='application/json':
           params=json.loads(params)
        else:
           print('error header')
        return HttpResponse(json.dumps(params))
     else:
          print('error method')
 #整合get,post为一个接口
def service(request):
    params={}
    request_header=request.META.get('CONTENT_TYPE')
    if request.method == "GET":
       for k,v in request.GET.items():
             params[k] = v
    elif request.method == "POST":
       if request_header=='application/x-www-form-urlencoded':
             params = request.POST
       elif request.header=='application/josn':
             params = json.loads(params)
       else:
             return HttpResponse("error headers")
     else:
           return HttpResponse("error methods")
     retrun HttpResponse(json.dumps(params))

 def excu_Cookie(cookies):
    message = "提交订单--Cookies是"
    return HttpResponse(message + cookies)