python - Postman Swift 代码显示与我的正常 url 不同的 url

Question

我创建了一个过滤器 api，其中包含多个参数，用于在我的 iOS 应用程序中传递 url 来过滤产品。该 API 是在 Django Rest 框架中用 Python 编写的。该 API 在 postman 中工作正常，但是当我检查 postman 中的 Swift 代码时，显示了一些复杂的 url 结构，我很困惑如何应用该 url 字符串我的 swift 代码。

我的序列化器类:

class ProductOptionsSerializer(serializers.ModelSerializer):
    optionproductid = ProductSerializer()
    optionattributeid = AttributeSerializer()
    optionsid = serializers.IntegerField()

    class Meta:
        model = Productoptions
        fields = ('optionproductid', 'optionattributeid', 'optionsid')

查看:

class GetProductByMulipleFilter(ListAPIView):
    serializer_class = ProductOptionsSerializer

    def get_queryset(self):
        query_params = self.request.query_params
        somethings = query_params.get('filters', None)

        # create an empty list for parameters to be filters by
        somethingParams = []
        serializer = self.serializer_class()
        # create the list based on the query parameters
        if somethings is not None:
            for something in somethings.split(','):
                somethingParams.append(str(something))

        if somethings is not None:
            queryset_list = Productoptions.objects.all()
            queryset_list = queryset_list.filter(optionattributeid__attributename__in=somethingParams)
            return queryset_list

网址

url(r'^$', GetProductByMulipleFilter.as_view(), name='filters')
http://192.168.1.13:8000/api/?filters=puma,nike

它工作正常并显示出正确的结果。但 swift 中的代码显示的网址如下:

let request = NSMutableURLRequest(url: NSURL(string: "http://192.168.1.13:8000/api/?filters=puma%2Cnike")! as URL

我的问题是为什么 Swift 代码中的 url 不显示仅用“,”分隔的参数。

Answer 1

因为请求在处理时将 ​​, 符号编码为 %2C 。您可以在 Wiki 上找到有关 URL 百分比编码 的更多信息。

When a character from the reserved set (a "reserved character") has special meaning (a "reserved purpose") in a certain context, and a URI scheme says that it is necessary to use that character for some other purpose, then the character must be percent-encoded. Percent-encoding a reserved character involves converting the character to its corresponding byte value in ASCII and then representing that value as a pair of hexadecimal digits. The digits, preceded by a percent sign (%) which is used as an escape character, are then used in the URI in place of the reserved character. (For a non-ASCII character, it is typically converted to its byte sequence in UTF-8, and then each byte value is represented as above.)