如何使用Django(python)实现android的服务器端

python manage.py startapp Login_sever

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.mysql',
        'NAME': 'androidsevers',
        'USER': 'root',
        'PASSWord': '123456',
        'PORT': 3306,
        'HOST': '',
    }
}

from django.db import models

# Create your models here.
class Login(models.Model):
    ID=models.AutoField(primary_key=True)
    username=models.CharField(max_length=25,verbose_name='用户名')
    password=models.CharField(max_length=25,verbose_name='密码')
    adminname=models.CharField(max_length=25,verbose_name='用户姓名')

python manage.py makemigrations

python manage.py migrate

from django.contrib import admin
from django.urls import path
from Login_sever import views
urlpatterns = [
    path('admin/', admin.site.urls),
    path('login/',views.login_view)
]

from django.core.exceptions import ObjectDoesNotExist
from django.Http import HttpResponse
from django.shortcuts import render
from Login_sever.models import Login
import JSON
def login_view(request):
    if request.method=='POST':
        username=request.POST.get('username')
        password=request.POST.get('password')
        date_error={
            'username': username,
            'adminname': '',
            'code':'错误，用户不存在',
            'Status Code': 404
        }
        try:
            user=Login.objects.get(username=username)
            if user.password==password:
                data={
                    'username':user.username,
                    'adminname':user.adminname,
                    'code': '成功',
                    'Status Code': 200
                }
                return HttpResponse(json.dumps(data), content_type='application/json')
            else:
                date_error = {
                    'username': username,
                    'adminname': '',
                    'code': '密码错误',
                    'Status Code': 404
                }
                return HttpResponse(json.dumps(date_error), content_type='application/json')
        except ObjectDoesNotExist:
            return HttpResponse(json.dumps(date_error),content_type='application/json')
    else:
        return HttpResponse('GET请求无效')

ipconfig

python manage.py runserver 192.168.0.104:8000

public class Login_cs {
    
    private String username;
    private String adminname;
    private String code;
    @SerializedName("Status Code")
    private int _$StatusCode185; // FIXME check this code
    public String getUsername() {
        return username;
    }
    public void setUsername(String username) {
        this.username = username;
    }
    public String getAdminname() {
        return adminname;
    }
    public void setAdminname(String adminname) {
        this.adminname = adminname;
    }
    public String getCode() {
        return code;
    }
    public void setCode(String code) {
        this.code = code;
    }
    public int get_$StatusCode185() {
        return _$StatusCode185;
    }
    public void set_$StatusCode185(int _$StatusCode185) {
        this._$StatusCode185 = _$StatusCode185;
    }
}

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.androidclient">
    <uses-permission android:name="android.permission.INTERNET" />
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".LoginActivity">
            <intent-filter>
                <action android:name="android.intent.action.MaiN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name=".MainActivity"></activity>
    </application>
</manifest>

implementation 'com.squareup.okhttp3:okhttp:3.10.0'
implementation 'com.google.code.gson:gson:2.6.2'

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".LoginActivity">
    <EditText
        android:layout_marginTop="35dp"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="请输入用户名"
        android:gravity="center"
        android:textSize="25dp"
        android:id="@+id/tvUserName"/>
    <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="请输入密码"
        android:textSize="25dp"
        android:gravity="center"
        android:inputType="textPassword"
        android:id="@+id/tvPassword"/>
    <Button
        android:id="@+id/btnLogin"
        android:layout_marginTop="25dp"
        android:layout_width="wrap_content"
        android:layout_gravity="center"
        android:background="#03A9F4"
        android:text="登录"
        android:textColor="#fff"
        android:textSize="25dp"
        android:paddingLeft="35dp"
        android:paddingRight="35dp"
        android:layout_height="wrap_content"/>
</LinearLayout>

package com.example.androidclient;

import android.content.Intent;
import android.os.Bundle;
import android.text.TextUtils;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import androidx.appcompat.app.AppCompatActivity;

import com.google.gson.Gson;

import java.io.IOException;

import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.FORMBody;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;

public class LoginActivity extends AppCompatActivity implements View.OnClickListener {

    private EditText tvUserName;
    private EditText tvPassword;
    private Button btnLogin;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);
        initView();
    }

    private void initView() {
        tvUserName = (EditText) findViewById(R.id.tvUserName);
        tvPassword = (EditText) findViewById(R.id.tvPassword);
        btnLogin = (Button) findViewById(R.id.btnLogin);

        btnLogin.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.btnLogin:
                submit();
                break;
        }
    }

    private void submit() {
        // validate
        String tvUserNameString = tvUserName.getText().toString().trim();
        if (TextUtils.isEmpty(tvUserNameString)) {
            Toast.makeText(this, "请输入用户名", Toast.LENGTH_SHORT).show();
            return;
        }

        String tvPasswordString = tvPassword.getText().toString().trim();
        if (TextUtils.isEmpty(tvPasswordString)) {
            Toast.makeText(this, "请输入密码", Toast.LENGTH_SHORT).show();
            return;
        }

        // TODO validate success, do something
        InternetSever(tvUserNameString,tvPasswordString);
    }
    private void InternetSever(String username,String password) {
        OkHttpClient client = new OkHttpClient();
        FormBody body = new FormBody.Builder()
                .add("username", username)
                .add("password", password)
                .build();
        final Request request = new Request.Builder()
                .url("http://192.168.0.104:8000/login/")
                .post(body)
                .build();
        client.newCall(request).enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                Toast.makeText(LoginActivity.this, "网络异常，请稍后再试！", Toast.LENGTH_SHORT).show();

            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {

                final String date=response.body().string();
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        Gson gson=new Gson();
                        Login_cs login_cs=gson.fromJson(date,Login_cs.class);
                        if (login_cs.get_$StatusCode185()==200){
                            Toast.makeText(LoginActivity.this, "欢迎登录，"+login_cs.getAdminname(), Toast.LENGTH_SHORT).show();
                            startActivity(new Intent(LoginActivity.this,MainActivity.class));
                        }else {
                            Toast.makeText(LoginActivity.this, login_cs.getCode(), Toast.LENGTH_SHORT).show();
                            tvPassword.setText("");
                            tvUserName.setText("");
                        }


                    }
                });

            }
        });


    }
}