scrapy处理post请求的传参和日志等级

处理post请求的参数： 

创建项目：

　　

代码:

import scrapy


class PostSpider(scrapy.Spider):
    name = 'post'
    # allowed_domains = ['www.xxx.com']
    start_urls = ['https://fanyi.baidu.com/sug']

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

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

settings.py

USER_AGENT = 'Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.119 Safari/537.36'
# Obey robots.txt rules
ROBOTSTXT_OBEY = False

查看请求的数据：　

 案例二：

# -*- coding: utf-8 -*-
import scrapy
from moviePro.items import MovieproItem

class MovieSpider(scrapy.Spider):
    name = 'movie'
    # allowed_domains = ['www.xxx.com']
    start_urls = ['https://www.4567tv.tv/frim/index1.html']
    #解析详情页中的数据
    def parse_detail(self,response):
        #response.meta返回接收到的meta字典
        item = response.meta['item']
        actor = response.xpath('/html/body/div[1]/div/div/div/div[2]/p[3]/a/text()').extract_first()
        item['actor'] = actor

        yield item

    def parse(self, response):
        li_list = response.xpath('//li[@class="col-md-6 col-sm-4 col-xs-3"]')
        for li in li_list:
            item = MovieproItem()
            name = li.xpath('./div/a/@title').extract_first()
            detail_url = 'https://www.4567tv.tv'+li.xpath('./div/a/@href').extract_first()
            item['name'] = name
            #meta参数:请求传参.meta字典就会传递给回调函数的response参数
            yield scrapy.Request(url=detail_url,callback=self.parse_detail,meta={'item':item})

settings.py
LOG_LEVEL = "ERROE"
LOG_FILE = './log.txt'    #输出日志

 items.py

# -*- coding: utf-8 -*-

# Define here the models for your scraped items
#
# See documentation in:
# https://doc.scrapy.org/en/latest/topics/items.html

import scrapy


class MoveproItem(scrapy.Item):
    # define the fields for your item here like:
    # name = scrapy.Field()
    name = scrapy.Field()
    actor = scrapy.Field()