为什么 post 请求在本地机器上工作但在 EC2 机器上失败？

Question

当我尝试通过下面显示的视图文件在我的远程计算机上执行 post 请求时，我收到了一个 HTTP 400 错误请求，但是，当我使用我的本地计算机执行相同的操作时，它完美运行。

远程机器（在 EC2 机器上使用 docker）

django == 2.2.1
drf == 3.9.4
python == 3.7

serializers.py

from rest_framework import serializers
from .models import irrigation, moisture

class IrrigationSerializer(serializers.ModelSerializer):
    class Meta:
        model = irrigation
        fields = '__all__'

views.py


    from django.shortcuts import render
    from django.http import HttpResponse
    from django.urls import reverse

    from .models import irrigation, moisture
    from .serializers import IrrigationSerializer

    from rest_framework import viewsets
    from rest_framework import status
    from rest_framework.response import Response
    from rest_framework.decorators import api_view, action

    class irrigationValues(viewsets.ModelViewSet):
        queryset = irrigation.objects.all()
        serializer_class = IrrigationSerializer

        def list(self, request):
            serializer = self.serializer_class(self.queryset, many = True)
            return Response(serializer.data)

    def dashboard(request):
        irrigations = irrigation.objects.all()
        return render(request, 'dashboard.html',{'irrigations':irrigations})

    @api_view(['POST'])
def addIrrigation(request):
    addIrrigation = IrrigationSerializer(data=request.data)
    print(request.data)
    if addIrrigation.is_valid():
        addIrrigation.save()
        return Response({"data":"Value added"},status = status.HTTP_201_CREATED)
    else:
        error_details = []
        for key in addIrrigation.errors.keys():
            error_details.append({"field": key, "message": addIrrigation.errors[key][0]})
        data = {
                "Error": {
                    "status": 400,
                    "message": "Your submitted data was not valid - please correct the below errors",
                    "error_details": error_details
                    }
                }
        return Response(data, status=status.HTTP_400_BAD_REQUEST)

我从本地机器得到的结果是：


{
    "data":"Value added"
}

"print(request.data)" 的输出是：

{'hardware_id': '001', 'temperature': 23, 'valve_status': 'Close'}
[02/Jul/2019 11:38:35] "POST /dashboard/addirrigation/ HTTP/1.1" 201 5680

我从远程机器得到的结果是：

{
    "Error": {
        "status": 400,
        "message": "Your submitted data was not valid - please correct the below errors",
        "error_details": [
            {
                "field": "hardware_id",
                "message": "This field is required."
            },
            {
                "field": "temperature",
                "message": "This field is required."
            },
            {
                "field": "valve_status",
                "message": "This field is required."
            }
        ]
    }
}

"print(request.data)" 的输出是：

<QueryDict: {'_content_type': ['application/json'], '_content': ['{\r\n    "hardware_id": "001",\r\n    "temperature": 23,\r\n    "valve_status": "Close"\r\n}']}>Bad Request: /dashboard/addirrigation/

注意：也许这对你来说很明显，但我需要提一下，当我使用 "HTML form" 通过 drf 执行 post 请求时，post 已成功提交，尽管如此，当我使用 "Raw data" 选项来 post 它时它不起作用。

Picture of the result

Answer 1

如问题所附图片所示，当我尝试通过 API 门户添加数据时，我收到了 HTTP 400 响应，但是当我使用邮递员并选择查询的内容类型时"application/json" 数据已成功发布（HTTP 201 响应）。

为什么 post 请求在本地机器上工作但在 EC2 机器上失败？

Why post request is working on local machine but in EC2 machine fails?

django

http-post

django-rest-framework

docker