django rest framework vue 实现用户登录详解

后端代码就不介绍了，可以参考 django rest framework 实现用户登录认证

这里介绍一下前端代码，和前后端的联调过程

在components下新建login.vue 文件

<template>
  <div class="login">
   <el-form label-width="80px">
    <el-form-item label="用户名">
     <el-input v-model="form.username"></el-input>
    </el-form-item>
    <el-form-item label="密码">
     <el-input v-model="form.password" type="password"></el-input>
    </el-form-item>
    <el-form-item>
     <el-button type="primary" @click="onLogin">登录</el-button>
     <el-button>取消</el-button>
    </el-form-item>
   </el-form>
  </div>
</template>

<script>
import axios from 'axios';
export default {
 name: "login",
 data() {
  return {
   form: {
    username: null,
    password: null
   }
  }
 },
 methods: {
  onLogin() {
   axios.post('http://127.0.0.1:8000/api/v1/auth/',this.form,{withCredentials:true}).then((res)=> {
    console.log(res);
    this.$router.go({path:'/'});
   });
  }
 }
}
</script>

<style scoped>
.login {
 width: 50%;
 margin: 0 auto;
}
</style>

修改rounter下index.js

import Vue from 'vue'
import Router from 'vue-router'
import HelloWorld from '@/components/HelloWorld'
import test from '@/components/test'
import runoob from '@/components/runoob'
import vhtml from '@/components/vhtml'
import Login from '@/components/login'
Vue.use(Router)

var router = new Router({
 routes: [
  {
   path: '/',
   name: 'HelloWorld',
   component: HelloWorld
  },
  {
   path: '/test',
   name: 'test',
   component: test
  }
  ,
  {
   path: '/login',
   name: 'login',
   component: Login
  }
  ,
  {
   path: '/runoob',
   name: 'runoob',
   component: runoob
  },
  {
   path: '/vhtml',
   name: 'vhtml',
   component: vhtml
  },
 ]
})
router.beforeEach((to,from,next)=> {
 if(to.path==='/login') {
  window.hideLogin = false;
 }
 // if(!window.token&&to.path!=='/login') {
 //  router.go('/login');
 // }else {
 //  next();
 // }
 next();
})
export default router;

修改项目 man.js

// The Vue build version to load with the `import` command
// (runtime-only or standalone) has been set in webpack.base.conf with an alias.
import Vue from 'vue'
import App from './App'
import router from './router'
import ElementUI from 'element-ui'
import axios from 'axios'
Vue.prototype.axios = axios

Vue.config.productionTip = false

Vue.use(ElementUI); // 引入elementui

/* eslint-disable no-new */
new Vue({
 el: '#app',
 router,
 components: { App },
 template: '<App/>'
})

启动项目 npm run dev

输入url,访问查看页面

启动服务端

浏览器打开检查功能

数据用户名和密码，点击登录 如下图。

因为还没做登录跳转页。所以 先通过这种方式，检验是否登录成功。

查看后台返回信息

遇到的问题：

1、跨域问题

因为vue 和django项目是两个前后端独立的项目，分别启动后，存在端口不一致的跨域问题。

如这里vue端口是8080，django 是8000,会一直存在找不到服务的问题。

解决方法：修改jango settings.py 文件

首先安装 corsheaders

# 安装

pip install django-cors-headers

# 添加 corsheaders 应用
# Application definition

INSTALLED_APPS = [
  'django.contrib.admin',
  'django.contrib.auth',
  'django.contrib.contenttypes',
  'django.contrib.sessions',
  'django.contrib.messages',
  'django.contrib.staticfiles',
  'rest_framework',
  'api',
  'corsheaders', # 解决跨域问题 修改1
]

# 中间层设置

# 添加如下
MIDDLEWARE = [
  ...
  'corsheaders.middleware.CorsMiddleware',
  'django.middleware.common.CommonMiddleware',
  ...
]

# CORS 设置跨域域名 配置白名单
CORS_ORIGIN_WHITELIST = [
  "https://example.com",
  "https://sub.example.com",
  "http://localhost:8080",
  "http://localhost:8000",
  "http://127.0.0.1:8000"
]

#直接允许所有主机跨域

CORS_ORIGIN_ALLOW_ALL = True 默认为False

CORS_ALLOW_CREDENTIALS = True # 允许携带cookie

# 下面这两个设置 经测试无用 

#
# # 解决跨域问题 修改5
# CORS_ALLOW_METHODS = (
#   'DELETE',
#   'GET',
#   'OPTIONS',
#   'PATCH',
#   'POST',
#   'PUT',
#   'VIEW',
# )

# # 解决跨域问题 修改6
# CORS_ALLOW_HEADERS = (
#   'XMLHttpRequest',
#   'X_FILENAME',
#   'accept-encoding',
#   'authorization',
#   'content-type',
#   'dnt',
#   'origin',
#   'user-agent',
#   'x-csrftoken',
#   'x-requested-with',
#   'Pragma',
# )

settings.py文件

"""
Django settings for logintest project.

Generated by 'django-admin startproject' using Django 2.1.2.

For more information on this file, see
https://docs.djangoproject.com/en/2.1/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/2.1/ref/settings/
"""

import os

# Build paths inside the project like this: os.path.join(BASE_DIR, ...)
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))

# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/2.1/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = 'zj9a#c4al&@_up8^g46ke44a1l%p^_wa1_5xgx60ertwu9$y(%'

# SECURITY WARNING: don't run with debug turned on in production!
# DEBUG = True
DEBUG = False

ALLOWED_HOSTS = ['localhost', '127.0.0.1']

# Application definition

INSTALLED_APPS = [
  'django.contrib.admin',
  'django.contrib.auth',
  'django.contrib.contenttypes',
  'django.contrib.sessions',
  'django.contrib.messages',
  'django.contrib.staticfiles',
  'rest_framework',
  'api',
  'corsheaders', # 解决跨域问题 修改1
]

MIDDLEWARE = [
  'django.middleware.security.SecurityMiddleware',
  'django.contrib.sessions.middleware.SessionMiddleware',
  'django.middleware.common.CommonMiddleware',
  'django.middleware.csrf.CsrfViewMiddleware',
  'django.contrib.auth.middleware.AuthenticationMiddleware',
  'django.contrib.messages.middleware.MessageMiddleware',
  'django.middleware.clickjacking.XFrameOptionsMiddleware',
  'corsheaders.middleware.CorsMiddleware', # 解决跨域问题 修改2
  'django.middleware.common.CommonMiddleware', # 注意顺序 解决跨域问题 修改3
]

ROOT_URLCONF = 'logintest.urls'
#
# #跨域增加忽略 修改4
CORS_ALLOW_CREDENTIALS = True
CORS_ORIGIN_ALLOW_ALL = True
# # CORS_ORIGIN_WHITELIST = (
# #   '*'
# # )
CORS_ORIGIN_WHITELIST = [
  "https://example.com",
  "https://sub.example.com",
  "http://localhost:8080",
  "http://localhost:8000",
  "http://127.0.0.1:8000"
]
#
#
# # 解决跨域问题 修改5
# CORS_ALLOW_METHODS = (
#   'DELETE',
#   'GET',
#   'OPTIONS',
#   'PATCH',
#   'POST',
#   'PUT',
#   'VIEW',
# )

# # 解决跨域问题 修改6
# CORS_ALLOW_HEADERS = (
#   'XMLHttpRequest',
#   'X_FILENAME',
#   'accept-encoding',
#   'authorization',
#   'content-type',
#   'dnt',
#   'origin',
#   'user-agent',
#   'x-csrftoken',
#   'x-requested-with',
#   'Pragma',
# )

TEMPLATES = [
  {
    'BACKEND': 'django.template.backends.django.DjangoTemplates',
    # 'DIRS': [],
    'DIRS': ['vuefront/dist'], # 修改1
    'APP_DIRS': True,
    'OPTIONS': {
      'context_processors': [
        'django.template.context_processors.debug',
        'django.template.context_processors.request',
        'django.contrib.auth.context_processors.auth',
        'django.contrib.messages.context_processors.messages',
      ],
    },
  },
]

# 新增2
# Add for vue.js
STATICFILES_DIRS = [
  os.path.join(BASE_DIR, "vuefront/dist/static"),
]

WSGI_APPLICATION = 'logintest.wsgi.application'

# Database
# https://docs.djangoproject.com/en/2.1/ref/settings/#databases

# DATABASES = {
#   'default': {
#     'ENGINE': 'django.db.backends.sqlite3',
#     'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
#   }
# }

# MySQL adil  密码：helloyyj
DATABASES = {
  'default':{
   'ENGINE':'django.db.backends.mysql',
   'HOST':'127.0.0.1',
   'PORT':'3306',
   'NAME':'pyweb', # 数据库名
   'USER':'adil',
   'PASSWORD':'helloyyj',
   'OPTIONS':{
     'sql_mode': 'traditional'
   },
  }
}

# Password validation
# https://docs.djangoproject.com/en/2.1/ref/settings/#auth-password-validators

AUTH_PASSWORD_VALIDATORS = [
  {
    'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
  },
  {
    'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
  },
  {
    'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
  },
  {
    'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
  },
]

# Internationalization
# https://docs.djangoproject.com/en/2.1/topics/i18n/

# LANGUAGE_CODE = 'en-us'
#
# TIME_ZONE = 'UTC'

LANGUAGE_CODE = 'zh-Hans'

TIME_ZONE = 'Asia/Shanghai'

USE_I18N = True

USE_L10N = True

USE_TZ = True

# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/2.1/howto/static-files/

STATIC_URL = '/static/'

更多设置可以参考  https://github.com/ottoyiu/django-cors-headers/

2、ESlint代码检测，启动vue时系统报错错误警告

解决方式

1、如果对自己信不过。最好的办法就是创建项目的时候不要ESlint 直接N

2、注释掉ESlint

在自己的项目目录下build.js——webpack.base.conf.js文件里面有段代码注释掉就行

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