scrapy携带payload发送post请求

url_rl = "https://www.yijiupi.com/v31/Product/ListProduct"
                payload = ‘{"currentPage":1,"data":{"sonCategoryId":"%s","categoryIds":["%s"],"saleModel":-1,"sort":0,"currentPage":1,"pageSize":60},"pageSize":60,"addressId":1745761,"deviceType":3}‘%(cat_id,cat_id)
                # return [scrapy.Request(url=url_rl, body=json.dumps(payload), method="POST", callback=self.get_page_num)]
                #这里的payload之前是字典类型，所以要换成字符串类型json.dumps(payload)，但是之后的payload就是字符串类型了，所以直接写payload就行
                request = scrapy.Request(url=url_rl, body=payload, method="POST", callback=self.get_page_sum)
　　　　　　　　　　#return [scrapy.Request(url=url_rl, body=json.dumps(payload), method="POST", callback=self.get_page_num)]

　　　　　　　　　　yield request