前后端联调，生成微博回调接口(上)

1.微博回调接口

1.1 oauth/urls.py 中添加路由

urlpatterns = [ 
      path('weibo/callback/', views.OauthWeiboCallback.as_view()), # /oauth/weibo/callback/ 
]

1.2 oauth/views.py 中添加试图函数

http://192.168.56.100:8888/oauth/weibo/callback/

from apps.oauth.models import OauthUser
from rest_framework_jwt.serializers import jwt_payload_handler,jwt_encode_handler
from user.utils import jwt_response_payload_handler


# 通过vue前端传入的code，微博身份验证
class OauthWeiboCallback(APIView):
    # 自定义权限类
    permission_classes = (AllowAny,)

    def post(self, request):
        # 接收vue端传过来的code（微博的用户code） 
        # 1.使用微博用户code+微博开发者账号信息换取微博的认证access_token
        code = request.data.get('code')
        data = {
            'client_id': '自己微博的 APP key',
            'client_secret': '自己微博的 secret',
            'grant_type': 'authorization_code',
            'code': code,
            'redirect_uri': 'http://127.0.0.1:8888/oauth/callback/',
        }
        url = 'https://api.weibo.com/oauth2/access_token'
        data = requests.post(url=url,data=data).json()   # 拿取请求的返回结果
        access_token = data.get('uid')  # 获取到的微博token
        weibo_uid = data.get('access_token')  # 获取到少码用户的id

        # 2. 根据uid 查询绑定情况
        try:
            oauth_user = OauthUser.objects.get(uid=weibo_uid, oauth_type='1')
        except Exception as e:
            oauth_user = None
        # 返回动作, 登录成功/需要绑定用户 type 0 登录成功, 1, 授权成功, 需要绑定
        if oauth_user:
            # 4. 如果绑定了, 返回token, 登录成功
            user = oauth_user.user
            payload = jwt_payload_handler(user)  # 获取用户信息载荷部分
            token = jwt_encode_handler(payload)   # 将获取的用户信息加密成ｊｗｔ
            # jwt_response_payload_handler为user模块定义的jwt返回的信息
            data = jwt_response_payload_handler(token, user)
            data['type'] = '0'  # 指定为登录成功
            return Response({'code': 0, 'msg': '登录成功', 'data': data})
        else:
            # 5. 如果没绑定, 返回标志, 让前端跳转到绑定页面
            return Response({'code': 0, 'msg': '授权成功', 'data': {'type': '1', 'uid': weibo_uid}})

1.3 oauth/models.py 中添加用户绑定模型

# 把三方的用户信息，和本地的用户信息进行绑定
class OauthUser(models.Model):
    OAUTHTYPE = (
        ('1','weibo'),
        ('2','weixin'),
    )
    uid = models.CharField('三方用户id',max_length=64)    # 第三方用户ｉｄ
    user = models.ForeignKey('user.User', on_delete=models.CASCADE)  # 本地用户外键，关联User表
    oauth_type = models.CharField('认证类型',max_length=10, choices=OAUTHTYPE)

1.4 迁移数据库

python manager.py makemigrations 
python manager.py migrate

2.vue微博回调空页面

• 注：微博回调空页面为：

http://127.0.0.1:8888/oauth/callback/

2.1 页面路径 componentsoauth.vue

<template>
  <div>
    <div v-show='visiable'>
      绑定用户
      用户名: <input
      type="text"
      v-model="username"
      @blur="check_username"
    >
      <span>{{username_message}}</span>
      密码: <input
      type="password"
      v-model="password"
    >
      <button @click="bindUser">绑定</button>
    </div>
  </div>
</template>
<script>
  import { oauth_callback_post, oauth_binduser_post, user_count } from './axios_api/api'
  export default {
    data() {
      return {
        visiable: false, // 绑定用户窗口
        uid: '', // weibo_uid
        username: '',
        password: '',
        username_message: '',
        username_error: false
      }
    },
    mounted() {
      this.getCode()
    },
    methods: {
      // 判断用户名
      check_username() {
        console.log('判断用户名')
        console.log(this.username == '')
        var reg = new RegExp(/^[a-zA-Z0-9_-]{4,16}$/); //字符串正则表达式 4到14位（字母，数字，下划线，减号）
        if (this.username == '') {
          this.username_message = '用户名不能为空'
          this.username_error = true
          return false
        }
        if (!reg.test(this.username)) {
          this.username_message = '用户名格式不正确'
          this.username_error = true
          return false
        } else {
          // 去后端检查用户名使用数量
          user_count({ type: 'username', data: this.username }).then((res) => {
            console.log(res)
            if (res.data.count > 0) {
              this.username_message = '用户名已存在, 请输入密码'
              this.username_error = false
            } else {
              this.username_message = '用户名可用, 将创建新用户,请输入密码'
              this.username_error = false
            }
          })
        }
      },
      // 扫码判断绑定没有
      // 获取微博传过来的code，发送给django后端进行验证
      getCode() {
        // 获取url中的code 信息
        // 当前url 是  http://mysyl.com:8080/oauth/callback/?code=fe6cbe07708aecf4a2b3d942ed692c4c
        let code = this.$route.query.code
        console.log(this.$route.query)
        // 给后端发送code
        let params = { code: code }
        oauth_callback_post(params).then((resp) => {
          console.log(resp)
          // code: 0
          // msg: "授权成功"
          // data: {type: "1", uid: "7410919278"}
          if (resp.data.type == '0') {
            // code: 0
            // msg: "登录成功"
            // data: {
            // authenticated: "true"
            // email: ""
            // id: 1
            // name: "admin"
            // role: null
            // token: "eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJ1c2VyX2lkIjoxLCJ1c2VybmFtZSI6ImFkbWluIiwiZXhwIjoxNTk3OTAwNTcyLCJlbWFpbCI6IiIsIm9yaWdfaWF0IjoxNTk3ODE0MTcyfQ.aQT7GSR_xQBPMlB4_k8-zTHnx0ow3OC2KHa3C8MgilY"
            // type: "0"
            // username: "admin"}
            // 发送  用户名, 密码, weibo_uid 到后端接口, 进行绑定
            let res = resp.data
            localStorage.setItem('username', res.username)
            // localStorage.setItem('img', res.img)
            localStorage.setItem('token', res.token)
            localStorage.setItem('uid', res.id)
            this.login_username = res.username
            this.opened = false
            // alert(res.message)
            this.$router.push('/')

          }
          if (resp.data.type == '1') {
            this.visiable = true
            this.uid = resp.data.uid
          }
        })
      },
      // 点击绑定以后判断用户存在不存在
      bindUser() {
        if(this.username_error){
          return
        }
        // 发送  用户名, 密码, weibo_uid 到后端接口, 进行绑定
        let params = { username: this.username, password: this.password, weibo_uid: this.uid }
        oauth_binduser_post(params).then((resp) => {
          console.log(resp)
          if (resp.code == 0){
            // 获取用户是否存在
            let res = resp.data
            localStorage.setItem('username', res.username)
            // localStorage.setItem('img', res.img)
            localStorage.setItem('token', res.token)
            localStorage.setItem('uid', res.id)
            this.login_username = res.username
            this.opened = false
            // alert(res.message)
            this.$router.push('/')
          }else {
            alert('密码错误')
          }
        })
      }
    }
  }
</script>