The request object parses the request body and request header parameters

1. Request body parameter resolution ：

        1.1 GET request

                1.1.1 request url in /?xxx&xxx The format is query string parameter , adopt request.GET Get request parameters

                1.1.2 request url in /xxx/2/xxx The format is path parameter , adopt request.GET obtain

                1.1.3 url in xx/?name=aa&age=19&name=bb, adopt request.GET obtain , If you want to get all name Parameters , adopt getlist('key1') Get the same key Multiple values of , return list type         

        1.2 POS request

                1.2.1 json Format requester parameters

                json Format parameters will be stored in body in , It's usually bytes Byte type , Use json.loads(request.body) Extract parameters after processing

                 1.2.2 www-form-urlencoded Format parameters

                Generally, the parameters entered through the form in the front end are www-form-urlencoded type  , adopt request.POST obtain

                1.2.3 file File type parameters

                        1.2.3.1 adopt form-data Medium file Type parameter

                                content_type The type is multipart/form-data, Parameter from request.body In order to get

                        1.2.3.2 adopt binary Medium file Type parameter

                                Pure file , Use both request.body obtain

2. Request header parameter parsing ：

        2.1 request.headers['key'] perhaps request.headers.get('key') obtain

        2.2 request.META['HTTP_AUTHORIZATION'] obtain

                The request header parameter will be converted to ：HTTP_ Parameter names are capitalized , If there is ‘-’ Symbol , Will automatically convert to ‘_'