// 登录
 wx.login({
  success: res => {
   console.log(res)
   // 发送 res.code 到后台换取 openId, sessionKey, unionId
     wx.request({
      url: api.GET_OPENID, //
      data: {
       js_code: res.code
      },
      success: function (res) {
       var openid = res.data.openid
       var session_key = res.data.session_key
       //获取openid，session_key
       //后台用户表保存
       wx.request({
        url: api.USER,
        method: "POST",
        data: {
         openid : openid，
         session_key : session_kay
        },
        success: function (res) {
         if (res.data.status == 'success') {
          //在缓存中保存用户id和openid备用
          wx.setStorage({
           key: 'userid',
           data: res.data.userid,
          });
          wx.setStorage({
           key: 'openid',
           data: openid,
          })
         } else {
          wx.showModal({
           title: '提示',
           showCancel: false,
           content: '获取openid失败',
          })
         }
        }
       })
      }
     })
  }
 })

from django.contrib.auth.models import AbstractUser

# Create your models here.
class User(AbstractUser):
  """
  用户新增字段
  """
  name = models.CharField(max_length=30, null=True, blank=True, verbose_name="姓名")

REST_FRAMEWORK = {
  'DEFAULT_PERMISSION_CLASSES': (
    'rest_framework.permissions.IsAuthenticated',
  ),
  'DEFAULT_AUTHENTICATION_CLASSES': (
    'rest_framework_jwt.authentication.JSONWebTokenAuthentication', # <-------
    'rest_framework.authentication.SessionAuthentication',
    'rest_framework.authentication.BasicAuthentication',
  ),
}

#JWT设置过期时间，具体配置查看文档
JWT_AUTH = {
  'JWT_VERIFY_EXPIRATION': False
}

#在您urls.py添加以下URL路由以启用通过POST获取令牌包括用户的用户名和密码。

from rest_framework_jwt.views import obtain_jwt_token
#...

urlpatterns = [
  '',
  # ...

  url(r'^api-token-auth/', obtain_jwt_token),
]

        wx.request({
         url: api.api-token-auth,//url配置
         method: 'POST',
         data: {
          'username': openid,     //这里我是用openid当作用户名
          'password': session_key   //用session_key当作密码
         },
         success: function(jwt) {
          //jwt格式：eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJ1c2VyX2lkIjoxLCJ1c2VybmFtZSI6InhpZWhhbyIsImV4cCI6MTUzNTM3ODQ2OCwiZW1haWwiOiIzNDg2OTg1ODhAcXEuY29tIn0.8rXFK_K2q8474LxYrCuuNJT93PkZMzi1JX6fVproXrE
          //前面是base64后面是签名，用.隔开
          //将jwt_token放入缓存备用
          var jwt_token = jwt.data.token
          wx.setStorageSync('jwt_token', jwt_token)
          self.globalData.jwt_token = jwt_token
         }
        })

from rest_framework.permissions import IsAuthenticated
from rest_framework_jwt.authentication import JSONWebTokenAuthentication

# 商品表
class goodsViewSet(viewsets.ModelViewSet):
  queryset = Goods.objects.all()
  serializer_class = goodsSerializers
  filter_class = GoodsFilter
  filter_backends = (DjangoFilterBackend, filters.SearchFilter)
  search_fields = ('name',)
  #认证配置
  permission_classes = (IsAuthenticated,)
  authentication_classes = (JSONWebTokenAuthentication,)

  //从缓存中取出jwt_token,并按文档用法拼接,在header中带入Authorization
  // JWT +jwt_token
  var jwt_token = 'JWT ' + wx.getStorageSync('jwt_token')

  wx.request({
   url: 'http://127.0.0.1:8000/mall/goods/',
   header:{
     'Authorization': jwt_token
   },
   success:function(res){
    //成功请求到商品数据
    console.log(res)
   }
  })