[Python知识库]鸿蒙与django前后端交互

一、Django端

1.导入Mysql数据库需要在主程序下的_init_.py

import pymysql

pymysql.install_as_MySQLdb()

2.配置主程序下的urls.py

from django.contrib import admin
from django.urls import path,include
from Person import urls as p_urls
urlpatterns = [
    path('admin/', admin.site.urls),
    path('Person/',include(p_urls))
]

3.配置新建APP下的urls.py

from django.urls import path
from . import views
from Person.views import lei, AppRep1

urlpatterns = [
    path('AppRep1/',AppRep1.as_view(),name='AppRep1')
]

4.新建App下的views.py

from django.http import HttpResponse
from django.shortcuts import render
from django.views import View
from rest_framework.views import APIView
from . import models
from .models import A
class AppRep1(APIView):
    def get(self,request):
        re = models.A.objects.filter(Name='white')
        arg = []
        for i in re:
            content = {'姓名':i.Name,'年龄':i.Age}
            arg.append(content)
        print(arg)
        print(type(arg))
        ID = request.data.get('id')
        # username = request.data.get('Name')
        # password = request.data.get('password')
        print(ID)
        # print(username)
        # print(password)
        return HttpResponse(arg)

5.新建APP下的models.py

from django.db import models

# Create your models here.
class A(models.Model):
    Name=models.CharField(max_length=12)
    Age=models.IntegerField(max_length=12)

二、前端代码

1.js文件

import fetch from '@system.fetch';
import qs from 'querystring';
export default {
    data: {
        winfo:"",
    },
    onClick() {
        fetch.fetch({
            url:'http://127.0.0.1:8000/Person/AppRep1/',
            data:qs.stringify({'id':1}),
            responseType:"json",
            method:"GET",
            success:(resp)=>
            {
                this.winfo = resp.data;
                console.log("返回的数据"+this.winfo)
            },
            fail:(resp)=>
            {
                this.winfo=resp.data;
                console.log("获取数据失败"+this.winfo)
            }
        });
    }
}

2.hml文件

<div class="container">
    <div class="title">
        <text>welcome</text>
    </div>
    <div>
        <button onclick="onClick">请求响应</button>
    </div>
    <div>
        <text>{{winfo}}</text>
    </div>
</div>

三、配置文件

在Config.json中

1.

 "deviceConfig": {
    "default": {
    "process": "com.huawei.hiworld.example",
    "supportBackup": false,
    "network": {
      "cleartextTraffic": true
      }
    }
  },

2.

"module": {
    "reqPermissions": [
      {
        "name": "ohos.permission.GET_NETWORK_INFO"
      },
      {
        "name": "ohos.permission.SET_NETWORK_INFO"
      },
      {
        "name": "ohos.permission.INTERNET"
      }
    ],
.....
}

在控制台输入npm install qs 和 npm install querystring

qs.stringify把一个参数对象格式化为一个字符串,将对象 序列化成 URL 的形式(a=b&c=d)，以&进行拼接

JSON.parse() 方法用来解析JSON字符串,将JSON字符串转换为JSON对象(把key=value连接字符串转成对象,如：name=hehe&ange=10==>{name:'hehe', ange:10}

四、遇到的问题

1.遇到报错：no internet（版本过低，建议使用3.8版本以上）

2.Method Not Allowed（用的是POST，但是获取应用GET）

3.新版本安装js sdk报错(29条消息) DevEco Studio JS sdk下载问题_weixin_40183198的博客-CSDN博客