抓取后的有效载荷，数据为空字典，{}，我该如何发布？

Question

def start_requests(self):
    page=1
    url = f'http://gs.amac.org.cn/amac-infodisc/api/pof/fund?rand=0.03238375864053089&page={page}&size=100'
    payload = {}
    yield scrapy.Request(url,method="POST",body=json.dumps(payload),headers=self.headers,callback=self.parse)

当我发布{}时，http返回status_code400。但是我可以将其与“请求”模块一起发布，但是这样，它给我带来了太多的阻碍。我想知道我该怎么做将{}贴出来，非常感谢！

我想迷恋的网站是：http://gs.amac.org.cn/amac-infodisc/res/pof/fund/index.html 以下代码可用于请求模块：

# -*- coding: utf-8 -*-
import scrapy
import json
from scrapy.spider import CrawlSpider
import requests
from Fund.items import FundItem

class FundSpider(scrapy.Spider):
    name = 'fund'
    allowed_domains = ['gs.amac.org.cn']
    # start_urls = ['http://gs.amac.org.cn/']
    headers = {                                                      # 请求头
        'Accept': 'application/json, text/javascript, */*; q=0.01',
        'Accept-Encoding': 'gzip, deflate',
        'Accept-Language': 'zh-CN,zh;q=0.9',
        'Cache-Control':'max-age=0',
        'Connection': 'keep-alive',
        'Content-Length': '2',
        'Content-Type': 'application/json',
        'Host': 'gs.amac.org.cn',
        'Origin': 'http://gs.amac.org.cn',
        'Referer': 'http://gs.amac.org.cn/amac-infodisc/res/pof/fund/index.html',
        'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36',
        'X-Requested-With': 'XMLHttpRequest'
    }

    def start_requests(self):
        # url = 'http://gs.amac.org.cn/amac-infodisc/api/pof/fund?rand=0.3248183083707361&page=1&size=20'
        base_url2 ='http://gs.amac.org.cn/amac-infodisc/res/pof/fund/'
        for page in range(1):
            url = f'http://gs.amac.org.cn/amac-infodisc/api/pof/fund?rand=0.03238375864053089&page={page}&size=100'
            request = requests.post(url=url,data=json.dumps({}),headers=self.headers)
            for i in range(100):
                url2 = base_url2 + request.json()["content"][i]["url"]
                yield scrapy.Request(url2,callback=self.parse)