scrapy 核心以及请求传参

# -*- coding: utf-8 -*-
import scrapy

class PostReqSpider(scrapy.Spider):
    name = 'post_req'
    # allowed_domains = ['www.bb.com']

    start_urls = ['https://fanyi.baidu.com/sug']

    # 默认这样的get
    # def start_requests(self):
    #     for url in self.start_urls:
    #         yield scrapy.Request(url=url,callback=self.parse)

    def start_requests(self):
        for url in self.start_urls:
            data = {
                'kw':'dog'
            }
            yield scrapy.FormRequest(url=url, callback=self.parse,formdata=data)

    def parse(self, response):
        print(response.text)