当我想更新表单中的元素时遇到问题。下面是我的代码：

<script setup>
    const updateSupply = async () => {
        console.log("Test");
        errors.value = ""
        try {
            await axios.put("http://127.0.0.1:49146/" + "supply");
        } catch (e) {
            if (e.response.status === 422) {
                for (const key in e.response.data.errors) {
                    errors.value = e.response.data.errors
                }
            }
        }
    };

const { destroySupply, updateSupply, updateClick } = useSupply();

const saveSupply = async () => {
  // console.log("Test");
  await updateSupply();
  // supply_id:this.supply_id,
};
</script>

<template>
<!-- Modal -->
  <CardBoxModal_JTO
    v-model="updateModalActive"
    title="Update supply"
    has-close
  >
    <form @submit.prevent="saveSupply">
      <CardBox>
        <FormField label="Noms & Email">
          <FormControl
            id="supply_name"
            v-model="form.supply_name"
            name="supply_name"
            :icon="mdiAccount"
            placeholder="name supply"
            required
          />
          <FormControl
            id="supply_email"
            v-model="form.supply_email"
            name="supply_email"
            type="email"
            :icon="mdiMail"
            placeholder="Email supply"
            required
          />
        </FormField>

        <!-- Buttons footer -->
        <BaseButtons class="flex justify-center">
          <BaseButton
            class="mr-2"
            type="submit"
            color="jt_orders"
            label="Update"
          />
          <BaseButton
            class="ml-2"
            type="reset"
            color="danger"
            outline
            label="Cancel"
          />
        </BaseButtons>
      </CardBox>
    </form>
  </CardBoxModal_JTO>

</template>

Django代码

# SupplyApi
@csrf_exempt
def supplyApi(request,id=0):
    if request.method=='GET':
        supplies = Supplies.objects.all()
        supplies_serializer = SupplySerializer(supplies,many=True)
        return JsonResponse(supplies_serializer.data,safe=False)
    elif request.method == 'POST':
        supply_data = JSONParser().parse(request)
        supplies_serializer = SupplySerializer(data=supply_data)
        if supplies_serializer.is_valid():
            supplies_serializer.save()
            return JsonResponse("Added Successfully",safe=False)
        return JsonResponse("Failed to Add",safe=False)
    elif request.method =='PUT':
        supply_data = JSONParser().parse(request)
        supply = Supplies.objects.get(supply_id=supply_data['supply_id'])
        supplies_serializer = SupplySerializer(supply,data=supply_data)
        if supplies_serializer.is_valid():
            supplies_serializer.save()
            return JsonResponse("Updated Successfully",safe=False)
        return JsonResponse("Failed to Update")
    elif request.method == 'DELETE':
        supply = Supplies.objects.get(supply_id=id)
        supply.delete()
        return JsonResponse("Deleted Successfully",safe=False)

我得到了这个错误[HTTP/1.1 500 Internal Server Error 527ms]。Django服务器错误：

IInternal Server Error: /supply
Traceback (most recent call last):
  File "C:\Python311\Lib\site-packages\rest_framework\parsers.py", line 64, in parse
    return json.load(decoded_stream, parse_constant=parse_constant)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Python311\Lib\site-packages\rest_framework\utils\json.py", line 31, in load
    return json.load(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Python311\Lib\json\__init__.py", line 293, in load
    return loads(fp.read(),
           ^^^^^^^^^^^^^^^^
  File "C:\Python311\Lib\json\__init__.py", line 359, in loads
    return cls(**kw).decode(s)
           ^^^^^^^^^^^^^^^^^^^
  File "C:\Python311\Lib\json\decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Python311\Lib\json\decoder.py", line 355, in raw_decode
    raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Python311\Lib\site-packages\django\core\handlers\exception.py", line 55, in inner
    response = get_response(request)
               ^^^^^^^^^^^^^^^^^^^^^
  File "C:\Python311\Lib\site-packages\django\core\handlers\base.py", line 197, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Python311\Lib\site-packages\django\views\decorators\csrf.py", line 56, in wrapper_view
    return view_func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\rt-enterprises\OneDrive\RTSOFTT\PROJECTS\Python Projects\JT_ORDER-FILES\jt_orders\jt_orders_app\views.py", line 42, in supplyApi
    supply_data = JSONParser().parse(request)
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Python311\Lib\site-packages\rest_framework\parsers.py", line 66, in parse
    raise ParseError('JSON parse error - %s' % str(exc))
rest_framework.exceptions.ParseError: JSON parse error - Expecting value: line 1 column 1 (char 0)

PS：下面是我的代码为**storeSupply**工作得很好.

<script>
const storeSupply = async (data) => {
        errors.value = ""
        try {
            await axios.post("http://127.0.0.1:49146/" + "supply", data);
        } catch (e) {
            if (e.response.status === 422) {
                for (const key in e.response.data.errors) {
                    errors.value = e.response.data.errors
                }
            }
        }

    }
</script>

我做错了什么？谢谢你的帮助。