Question

背景：我需要发一个POST请求来向我的程序添加数据。

我目前正在使用高级REST客户端来模拟将由arduino发送的数据包。它目前正在发送这个POST请求：

{"cellVoltageLow":28,"cellVoltageHigh":415,"cellVoltageAvg":415,
  "cellTempMin":5,"cellTempMax":15,"cellTempAvg":10,"stateOfCharge":50,
    "errorBitmap":0,"batteryVoltageIn":420,"motorAmp":200,"usageAmp":210,
      "auxAmp":10,"rpmMotor":1000,"uiState":0,"chargingStatus":1,
        "motorTemp":15,"inverterTemp":30,"inletTemp":5,"ambientTemp":5,
          "chargingAmp":10,"chargingVoltage":420,"apsVoltage":42,
            "maxAmpsInCharge":10,"bmsErrorValue":0,"energyDriveAH":1000,
              "energyRegenAH":100,"energyChargeAH":10,"energyDischargeAH":10,
                "energyDriveWH":1000,"energyRegenWH":10,"energyChargeWH":2300,
                  "energyDischargeWH":23000,"drivenDistanceCM":100000,
                    "chargedEnergyWH":1000,"returnedEnergyWH":10000,
                      "connectedTimeSec":100,"driveTimeSec":240}

如果我将此帖子发布到此类（禁用csrf）

def Voltage(request):
    global Voltage

    if request.method == 'POST':

        data = json.loads(request.body.decode('utf-8'))
        Voltage.cellVoltageLow = data["cellVoltageLow"]
        Voltage.cellVoltageAvg = data["cellVoltageAvg"]
        Voltage.cellVoltageHigh = data["cellVoltageHigh"]
        Voltage.batteryVoltageIn = data["batteryVoltageIn"]
        Voltage.chargingVoltage = data["chargingVoltage"]
        Voltage.apsVoltage = data["apsVoltage"]


        print("got ur message" + str(request.body))

        return HttpResponse("OK")

    if request.method == 'GET':

        return HttpResponse('{ "cellVoltageLow":' + str(Voltage.cellVoltageLow)
                            + '{ "cellVoltageAvg":' + str(Voltage.cellVoltageAvg)
                            + '{ "cellVoltageHigh":' + str(Voltage.cellVoltageHigh)
                            + '{ "batteryVoltageIn":' + str(Voltage.batteryVoltageIn)
                            + '{ "chargingVoltage":' + str(Voltage.chargingVoltage)
                            + '{ "apsVoltage":' + str(Voltage.apsVoltage)
                            +  ' }' )

    else:

        return HttpResponse ('Not allowed')

class Voltage:
    cellVoltageLow = 0;
    cellVoltageAvg = 0;
    cellVoltageHigh = 0;
    batteryVoltageIn = 0;
    chargingVoltage = 0;
    apsVoltage = 0;

然后我得到了错误。

Traceback (most recent call last):
  File "C:\Users\user\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\core\handlers\exception.py", line 39, in inner
    response = get_response(request)
  File "C:\Users\user\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\core\handlers\base.py", line 187, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "C:\Users\user\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\core\handlers\base.py", line 185, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
TypeError: object() takes no parameters

我是python上的菜鸟，所以请给我一个关于错误的扩展解释。

编辑：我替换了函数和类的冲突名称。我也是创建JSON字符串的错误方法，因为我没有使用正确的代码创建JSON字符串的知识。

我还是得到内部错误500

def voltage(request):
    global voltage

    if request.method == 'POST':

        data = json.loads(request.body.decode('utf-8'))
        Voltage.cellVoltageLow = data["cellVoltageLow"]
        Voltage.cellVoltageAvg = data["cellVoltageAvg"]
        Voltage.cellVoltageHigh = data["cellVoltageHigh"]
        Voltage.batteryVoltageIn = data["batteryVoltageIn"]
        Voltage.chargingVoltage = data["chargingVoltage"]
        Voltage.apsVoltage = data["apsVoltage"]


        print("got ur message" + str(request.body))

        return HttpResponse("OK")

    if request.method == 'GET':

        return HttpResponse('{ "cellVoltageLow":' + str(Voltage.cellVoltageLow)
                            + '{ "cellVoltageAvg":' + str(Voltage.cellVoltageAvg)
                            + '{ "cellVoltageHigh":' + str(Voltage.cellVoltageHigh)
                            + '{ "batteryVoltageIn":' + str(Voltage.batteryVoltageIn)
                            + '{ "chargingVoltage":' + str(Voltage.chargingVoltage)
                            + '{ "apsVoltage":' + str(Voltage.apsVoltage)
                            +  ' }' )

    else:

        return HttpResponse ('Not allowed')

class Voltage:
    cellVoltageLow = 0;
    cellVoltageAvg = 0;
    cellVoltageHigh = 0;
    batteryVoltageIn = 0;
    chargingVoltage = 0;
    apsVoltage = 0;

编辑：我在@MosesKoledoye回复的帮助下修复了它。答案是电压。

我将代码更改为

def voltage(request):
    global voltage
    if request.method == 'POST':

        data = json.loads(request.body.decode('utf-8'))
        Voltage.cellVoltageLow = data["cellVoltageLow"]
        Voltage.cellVoltageAvg = data["cellVoltageAvg"]
        Voltage.cellVoltageHigh = data["cellVoltageHigh"]
        Voltage.batteryVoltageIn = data["batteryVoltageIn"]
        Voltage.chargingVoltage = data["chargingVoltage"]
        Voltage.apsVoltage = data["apsVoltage"]

        print("got ur message" + str(request.body))

        return HttpResponse("OK")

    if request.method == 'GET':

        return HttpResponse('{ "cellVoltageLow":' + str(Voltage.cellVoltageLow)
                            + '{ "cellVoltageAvg":' + str(Voltage.cellVoltageAvg)
                            + '{ "cellVoltageHigh":' + str(Voltage.cellVoltageHigh)
                            + '{ "batteryVoltageIn":' + str(Voltage.batteryVoltageIn)
                            + '{ "chargingVoltage":' + str(Voltage.chargingVoltage)
                            + '{ "apsVoltage":' + str(Voltage.apsVoltage)
                            +  ' }' )

    else:

        return HttpResponse ('Not allowed')

class Voltage:
    cellVoltageLow = 0;
    cellVoltageAvg = 0;
    cellVoltageHigh = 0;
    batteryVoltageIn = 0;
    chargingVoltage = 0;
    apsVoltage = 0;

然后在urls.py中我将电压更改为电压

    url(r'^voltage/', views.Voltage, name='Voltage'),
to
    url(r'^voltage/', views.voltage, name='Voltage'),

谢谢你的帮助，我得到了200 OK，因为它应该是。谢谢你的所有回复。

Answer 1

您不应声明全局变量。这不是在Django中创建对象的正确方法。

相反，只需在数据准备好存储后初始化并声明对象。

if request.method == "POST":
   data = json.loads(request.body.decode('utf-8'))
   new_voltage = Voltage.objects.create()
   new_voltage.cellVoltageLow = data["cellVoltageLow"]
   ... # Store other data too
   new_voltage.save()

请参阅文档：https://docs.djangoproject.com/en/1.10/ref/models/instances/#creating-objects

Django TypeError：object（）不带参数

1 个答案: